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International Space Flight (ESA, Russia, China and others) => Japanese Launchers => Topic started by: bolun on 04/10/2012 04:43 pm

Title: LIVE: H-IIA - Hitomi (ASTRO-H) - February 17, 2016 (08:45 UTC)
Post by: bolun on 04/10/2012 04:43 pm
The ASTRO-H is the sixth Japanese X-ray observation satellite that will explore the extreme universe that is abundant with high energy phenomena around black holes and supernova explosions, and observe a cluster of galaxies filled with high-temperature plasma.

Objectives:

The purpose of ASTRO-H is to explore the structure and evolution of Universe with the following observational capabilities:

1.- The first imaging and spectroscopic observations with the hard X-ray telescope.

2.- The first spectroscopic observations with an extremely high energy resolution of the micro-calorimeter.

3.- The most sensitive wideband observation over an energy range from 0.3 to 600 keV.


http://www.isas.jaxa.jp/e/enterp/missions/astro-h/index.shtml (http://www.isas.jaxa.jp/e/enterp/missions/astro-h/index.shtml)

http://astro-h.isas.jaxa.jp/index.html.en (http://astro-h.isas.jaxa.jp/index.html.en)

http://www.jaxa.jp/projects/sat/astro_h/index_e.html (http://www.jaxa.jp/projects/sat/astro_h/index_e.html)
Title: Re: JAXA/ESA - ASTRO H - updates
Post by: bolun on 04/10/2012 04:45 pm
Astro-H agreement signed with JAXA
 
10 April 2012

An agreement was signed by ESA and the Japanese Aerospace Exploration Agency (JAXA) for cooperation on Astro-H, an important mission that will provide a unique opportunity for probing extreme phenomena in the Universe.
 
Astro-H will study astrophysical objects including black holes and neutron stars, explore the non-thermal Universe, and investigate the large-scale structure of the Universe and its evolution.

The agreement was signed on 16 March by Prof. Alvaro Giménez Cañete, ESA Director of Science and Robotic Exploration, and Dr Junjiro Onoda, Director General of the Japanese Institute of Space and Astronautical Science (ISAS).

http://www.esa.int/esaSC/SEM61VEWF0H_index_0.html
Title: Re: JAXA/ESA - ASTRO H - updates
Post by: zubenelgenubi on 11/02/2015 07:59 pm
Will this be the last HII-A launch of 2015, or the first HII-A launch of 2016?
Title: Re: JAXA/ESA - ASTRO H - updates
Post by: russianhalo117 on 11/05/2015 03:44 am
Will this be the last HII-A launch of 2015, or the first HII-A launch of 2016?
current big picture window of 20 December to 20 March
Title: Re: JAXA/ESA - ASTRO H - updates
Post by: Fuji on 11/30/2015 02:44 am
Will this be the last HII-A launch of 2015, or the first HII-A launch of 2016?

The  first launch of 2016.
Title: Re: JAXA/ESA - ASTRO H - updates
Post by: Fuji on 12/01/2015 01:44 pm
ASTORO-H media event was held at JAXA TKSC on Nov.28.
https://www.flickr.com/photos/nvslive/sets/72157661710347836/
(C)nvs-live.com
Title: Re: JAXA/ESA - ASTRO H - updates
Post by: Salo on 12/02/2015 09:43 pm
The ASTRO-H satellite will be transported to JAXA's Tanegashima Space Center in Kagoshima Prefecture, southwestern Japan, to be launched by the end of March 2016.

https://english.kyodonews.jp/photos/2015/12/386748.html
Title: Re: JAXA - ASTRO H - updates
Post by: yoichi on 12/11/2015 04:14 am
http://global.jaxa.jp/press/2015/12/20151211_h2af30.html

Launch of X-ray Astronomy Satellite "ASTRO-H" by H-IIA Launch Vehicle No. 30

Mitsubishi Heavy Industries, Ltd. and the Japan Aerospace Exploration Agency (JAXA) decided to launch the H-IIA Launch Vehicle No. 30 (H-IIA F30) with the X-ray Astronomy Satellite “ASTRO-H" onboard in the following schedule.
 To capitalize on the excess launch capability of the H-IIA F30, we will also provide launch and orbit injection opportunities for small secondary payloads (piggyback payloads).

Scheduled date of Launch : February 12 (Friday), 2015 (Japan Standard Time)
Launch time                    : 5:45 thru 6:30 p.m. (Japan Standard Time) (*)
Launch window                : From Feb. 13 (Sat.) thru 29 (Mon.), 2015 (JST)
Launch site                     : Yoshinobu Launch Complex at the Tanegashima Space Center

* Launch time will be set for each launch day if the launch is delayed.
Title: Re: JAXA - ASTRO H - updates
Post by: Steven Pietrobon on 01/07/2016 02:41 am
From the image at

http://astro-h.isas.jaxa.jp/wp-content/uploads/2013/08/schedule3_e1.jpg

it looks like a H-IIA202 is going to be used.
Title: Re: JAXA - ASTRO H - updates
Post by: bolun on 01/17/2016 08:09 pm
ASTRO-H satellite ready for launch

14 January 2016

On 12 January 2016, the Japan Aerospace Exploration Agency (JAXA) presented their ASTRO-H satellite to the media at the Tanegashima Space Center, situated on a small island in the south of Japan. The satellite, developed with institutions in Japan, the US, Canada and Europe, is now ready to be mounted on an H-IIA rocket for launch on 12 February.

http://sci.esa.int/astrophysics/57208-astro-h-ready-for-launch/

Image credit: JAXA
Title: Re: H-IIA - ASTRO H - February 12, 2016
Post by: Fuji on 01/21/2016 12:43 pm
ASTRO-H presskit.
http://fanfun.jaxa.jp/countdown/astro_h/files/astro_h_presskit.pdf
Title: Re: H-IIA - ASTRO H - February 12, 2016
Post by: yoichi on 01/25/2016 08:34 am
ASTRO-H to be launched on Feb. 12, 2016 (with English subtitles)
https://www.youtube.com/watch?v=pv1mXwPh904
Title: Re: H-IIA - ASTRO H - February 12, 2016
Post by: catdlr on 02/03/2016 09:02 pm
X-ray astronomy satellite ASTRO-H - watch in the hot universe - / The X-ray astronomy satellite - Insight into the Hot Universe

Published on Feb 3, 2016
The universe ... quiet, cold space. Does it really would be so? The appearance of the hot universe full of upheaval in the back of the night sky, in order to unlock the X-ray, ASTRO- H is take off. The Universe ... Appears to BE a vast, cold, quiet expanse of space. But IS it? X-ray Astronomy Sattelte ASTRO-H Will Take Flight to UNRAVEL the hot, violent Universe hidden deep in the Night sky.

https://youtu.be/0rdwza32trU

Title: Re: H-IIA - ASTRO H - February 12, 2016
Post by: catdlr on 02/03/2016 09:03 pm
X-ray astronomy satellite ASTRO-H news published [SD360]

Published on Feb 3, 2016
On February 12 2016 will be launched from Tanegashima, Kagoshima Prefecture,
is the video of the news publication of X-ray astronomy satellite ASTRO-H. ASTRO-H are three types, with four telescopes and four to six of the sensor and observe the X-ray that can not be observed is blocked by the atmosphere on the ground.

https://youtu.be/Rz_e1HO1nnc
Title: Re: H-IIA - ASTRO H - February 12, 2016
Post by: jacqmans on 02/04/2016 02:04 pm
Japanese Telescope Will Give Canadians  A New Eye on the Most Cataclysmic Events in the Universe

Longueuil, Quebec, February 4, 2016 – ASTRO-H, Japan’s flagship astronomy mission, is slated for launch on Friday, February 12, 2016, at 3:45 a.m. (EST) / 12:45 a.m. (PST) from the Tanegashima Space Center in Japan. 

The space observatory will be fitted with a unique laser measurement system, the Canadian ASTRO-H Metrology System (CAMS), provided by the Canadian Space Agency. In return for CAMS, Canadians will be part of the mission’s science team and have privileged access to the space observatory to study black holes, supernova explosions, neutron stars, and how galaxies like our own Milky Way were formed. This precision optics technology was built by Neptec Design Group Ltd.

Astronaut and astrophysicist David Saint-Jacques; Professor Luigi Gallo, Canada’s lead scientist from Saint Mary’s University; and space industry experts from Neptec are available for interviews. Please contact the Canadian Space Agency to schedule interviews.

Contact information:

Canadian Space Agency
Media Relations Office
Telephone: 450-926-4370
E-mail: [email protected]
Website: www.asc-csa.gc.ca
Title: Re: H-IIA - ASTRO H - February 12, 2016
Post by: robertross on 02/06/2016 07:55 pm
Halifax scientist off to Japan for Astro-H satellite launch

Saint Mary's University astronomer Luigi Gallo leads the Canadian portion of the space telescope

http://www.cbc.ca/news/canada/nova-scotia/astronomer-luigi-gallo-saint-marys-astro-h-1.3436849
Title: Re: H-IIA - ASTRO H - February 12, 2016
Post by: Star One on 02/07/2016 06:19 pm
ASTRO-H satellite poised to enhance views of X-ray sky

http://astronomynow.com/2016/02/07/astro-h-satellite-poised-to-enhance-views-of-x-ray-sky/
Title: Re: H-IIA - ASTRO H - February 12, 2016
Post by: catdlr on 02/08/2016 03:42 am
H-IIA rocket No. 30 launch before Y-1 briefing

Scheduled for Feb 10, 2016
(Google Translated)
Is a briefing of reporters who take place in about one day before the launch.
Other launch content of the current H-IIA, development status, is transmitted information such as weather judgment.

https://youtu.be/UIf4wKE8rEE
Title: Re: H-IIA - ASTRO H - February 12, 2016
Post by: Fuji on 02/08/2016 01:32 pm
Weekly weather forecast.
2月12日 will be poor condition. After that wind is strong.
http://space.jaxa.jp/tnsc/tn-weather/data/weekly.gif
Title: Re: H-IIA - ASTRO H - February 12, 2016
Post by: Skyrocket on 02/09/2016 07:17 am
Has anyone info on the eight CubeSats to be on this launch?
Title: Re: H-IIA - ASTRO H - February 12, 2016
Post by: jcm on 02/10/2016 04:54 am
Has anyone info on the eight CubeSats to be on this launch?

Only that it's manifested by Spaceflight Industries for a US remote sensing constellation.
Maybe another PlanetLabs batch?
Title: Re: H-IIA - ASTRO H - February 12, 2016
Post by: yoichi on 02/10/2016 05:01 am
http://global.jaxa.jp/press/2016/02/20160210_h2af30.html

Launch Time and Window of X-ray Astronomy Satellite (ASTRO-H) aboard H-IIA Launch Vehicle No. 30

February 10, 2016 (JST)
Mitsubishi Heavy Industries, Ltd.
National Research and Development Agency
Japan Aerospace Exploration Agency (JAXA)

Mitsubishi Heavy Industries, Ltd. (MHI) and the Japan Aerospace Exploration Agency (JAXA) are pleased to announce the launch time and launch window for the X-ray Astronomy Satellite (ASTRO-H) by H-IIA Launch Vehicle No. 30 (H-IIA F30).

Scheduled date of launch : February 12 (Fri.), 2016 (Japan Standard Time, JST)
Launch time                    : 5:45 p.m. (JST)
Launch window                : 5:45 thru 6:30 p.m. (JST)
Reserved launch period    : February 13 (Sat.) thru February 29 (Mon.), 2016



X線天文衛星「ASTRO-H」 / H-IIAロケット30号機 打ち上げライブ中継|Launch of ASTRO-H/H-IIA F30 Live Broadcast
https://www.youtube.com/watch?v=kH-wJ1E00wA
Title: Re: H-IIA - ASTRO H - February 12, 2016
Post by: Galactic Penguin SST on 02/10/2016 05:17 am
Has anyone info on the eight CubeSats to be on this launch?

Only that it's manifested by Spaceflight Industries for a US remote sensing constellation.
Maybe another PlanetLabs batch?

I think I have seen sources that report that they will not fly on this flight, although the launch plan (attached in this post) still list them.

It looks like weather forecasts will be tricky for the launch time, but so far the status is go.
Title: Re: H-IIA - ASTRO H - February 12, 2016
Post by: jcm on 02/10/2016 05:49 am
I visited Sagamihara a few years ago to meet with the ASTRO-H team and share with their data analysis team lessons learned from the Chandra program.

ASTRO-H is an exciting mission. Its cornerstone instrument is the SXS, a microcalorimeter at the focus of the SXT soft X-ray telescope.
We hope this will be the first working microcalorimeter in orbit. Compared to the CCDs on Chandra and XMM and Suzaku, the pixels
of the SXS have far higher energy resolution - like going from 8-bit color to 32-bit color, I guess. Their resolution is better in some
energy ranges than the gratings on Chandra, which have the disdavantage that their light gets spread out over the detector, so
you only get a measurement of one source (star) instead of a whole picture - with a microcalorimeter you get a measurement (high resolution spectrum) in every pixel of the image.

Now to be fair, the SXS has only 36 pixels and the SXT is a fairly poor imaging telescope so you'll only really get one source at a time
with ASTRO-H too. But this is a critical test of technology that will supplant CCDs for X-ray imagers, for example on the proposed X-ray Surveyor mission now being planned (plotted?) by the US community.

It's been a long road. The technology - from NASA/Goddard and JAXA among others - was originally going to be on AXAF.
AXAF was in about 1991 split into AXAF-I and AXAF-S to save money, with AXAF-I  for imaging and AXAF-S for a calorimeter spectroscopy mission. THen about a year later AXAF-S was cancelled. AXAF-I survived to become Chandra (launched 1999).
In the wake of S's cancellation the US team paired with the Japanese to get their instrument on ASTRO-E, which launched in 2000.
But, it fell in the ocean and was destroyed. So they tried again five years later with ASTRO-E-II (Suzaku). ASTRO-E-II got into orbit
ok and the calorimeter got nice measurements of the on-board calibration source but then due to a design error the thermal
system failed and warmed up all the cryogen, making the calorimeter useless. Suzaku's done great science with its remaining
instruments, but still no opportunity to do astronomy with the calorimeter.  (There have been six calorimeter sounding rocket flights
between 1995 and 2013 in NASA's XQC program, so there's been a little test data).

11 years after the Suzaku fiasco and a quarter century after serious efforts to fly the instrument began, we're hoping ASTRO-H's SXS
will finally do serious astronomy with this technology. Fingers FIRMLY crossed.



Title: Re: H-IIA - ASTRO H - February 12, 2016
Post by: jcm on 02/10/2016 05:54 am
https://heasarc.gsfc.nasa.gov/docs/astroh/whatnew/

Feb 8, 2016 - The SXS dewar has been sucessfully topped-off with liquid helium.


https://heasarc.gsfc.nasa.gov/docs/astroh/
SXS is now at 50 mK
7 Feb 2016

- yes you read that right, the temperature of the instrument is 50 MILLIKELVIN.
That is 0.050 degrees above absolute zero.
or, in layperson's terms, BLOODY COLD.
The calorimeter works like this: an X-ray photon comes from space, bounces of the mirrors and
lands in a calorimeter pixel. The energy of the photon - A SINGLE PHOTON - raises the temperature
of the pixel and you measure that, deducing the photon's energy.

As someone said about being an astronaut on top of a rocket, if you're not freaked out by this, then you don't
understand what's going on.
Title: Re: H-IIA - ASTRO H - February 12, 2016
Post by: jcm on 02/10/2016 05:57 am
Technical article for background on the satellite as a whole
http://arxiv.org/abs/1412.1356
Title: Re: H-IIA - ASTRO H - February 12, 2016
Post by: catdlr on 02/10/2016 08:08 am
H-IIA rocket No. 30 launch before Y-1 briefing

Is a briefing of reporters who take place in about one day before the launch.
Other launch content of the current H-IIA, development status, is transmitted information such as weather judgment.

https://youtu.be/UIf4wKE8rEE
Title: Re: H-IIA - ASTRO H - February 12, 2016
Post by: Fuji on 02/10/2016 12:00 pm
Has anyone info on the eight CubeSats to be on this launch?

Only that it's manifested by Spaceflight Industries for a US remote sensing constellation.
Maybe another PlanetLabs batch?

I think I have seen sources that report that they will not fly on this flight, although the launch plan (attached in this post) still list them.

US CubeSats were demanifested on this flight due to scheduling issue (JAXA announced Jan. 20th)
Souce is on this Japanese article.
http://sorae.jp/030201/2016_01_20_h-iia.html
Title: Re: H-IIA - ASTRO H - February 12, 2016
Post by: northenarc on 02/11/2016 12:08 pm
 Link for rollout.    https://www.youtube.com/watch?v=9lcFovZqPLE
             
Title: Re: H-IIA - ASTRO H - February 12, 2016
Post by: Mammutti on 02/11/2016 12:23 pm
Quote
ASTRO-H / H-IIA F30 launch was postponed because bad weather is expected.The new launch day will be announced as soon as it is determined.

https://twitter.com/JAXA_en/status/697760629176823809
Title: Re: H-IIA - ASTRO H - NET February 13, 2016
Post by: input~2 on 02/11/2016 07:38 pm
Obsolete navigational warning for archives

WESTERN NORTH PACIFIC.
PHILIPPINE SEA.
ROCKETS.
DNC 12.
1. HAZARDOUS OPERATIONS 120845Z TO 121004Z FEB
IN AREAS BOUND BY:
A. 29-35-00N 132-33-00E, 29-49-48N 132-39-09E,
29-56-38N 132-48-53E, 29-40-00N 133-30-00E,
29-16-00N 133-20-00E.
B. 28-51-00N 137-47-00E, 29-44-00N 137-56-00E,
29-21-00N 140-17-00E, 28-28-00N 140-08-00E.
C. 26-25-00N 159-55-00E, 28-17-00N 160-21-00E,
27-03-00N 165-40-00E, 25-10-00N 165-14-00E.
2. CANCEL THIS MSG 121104Z FEB 16.//

Authority: NAVAREA XI 80/16 071135Z FEB 16.

Date: 071207Z FEB 16
Cancel: 12110400 Feb 16
Title: Re: H-IIA - ASTRO H - NET February 13, 2016
Post by: input~2 on 02/11/2016 07:43 pm
Obsolete NOTAM for archives
A0650/16 -  THE JAPAN AEROSPACE EXPLORATION AGENCY (JAXA) HAS PLANNED A ROCKET LAUNCH. DEBRIS FROM THIS LAUNCH WILL FALL WITHIN AN AREA BOUNDED BY 2817N16021E 2703N16540E 2510N16514E 2625N15955E BACK TO THE POINT OF ORIGIN.  IN THE INTEREST OF SAFETY ALL NON-PARTICIPATING AIR TRAFFIC ARE ADVISED TO AVOID THE NOTAMED AREA. IFR AIRCRAFT UNDER ATC JURISDICTION SHOULD ANTICIPATE CLEARANCE AROUND THE NOTAMED AREA. SFC - UNL, 12 FEB 08:30 2016 UNTIL 12 FEB 10:30 2016. CREATED: 09 FEB 21:49 2016
Title: Re: H-IIA - ASTRO H - NET February 13, 2016
Post by: jacqmans on 02/12/2016 06:51 am
February 11, 2016 (JST)

Launch Postponement of H-IIA Launch Vehicle No. 30 with X-ray Astronomy Satellite (ASTRO-H) Onboard

Mitsubishi Heavy Industries, Ltd. and the Japan Aerospace Exploration Agency (JAXA) decided to postpone the launch of the H-IIA Launch Vehicle No. 30 with the X-ray Astronomy Satellite (ASTRO-H) onboard from the Tanegashima Space Center, which was originally scheduled for February 12 (Fri.), 2016 (Japan Standard Time), as clouds including a freezing layer (please refer to the following figure) that exceed the restrictions for suitable weather are forecast to be generated at around the scheduled launch time. In addition, strong winds are also forecast and they are expected to hinder launch preparations.

The new launch day will be announced as soon as it is determined.


URL:
http://global.jaxa.jp/press/2016/02/20160211_h2af30.html

Figure:Weather Restriction (Clouds including a freezing layer)
http://global.jaxa.jp/press/2016/02/20160211_h2af30.html#at


Reference:
 X-ray Astronomy Satellite "ASTRO-H"
http://global.jaxa.jp/projects/sat/astro_h/
Title: Re: H-IIA - ASTRO H - NET February 13, 2016
Post by: zubenelgenubi on 02/12/2016 06:43 pm
Does the current forecast rule out a launch during the February 13 launch window?
How about the 14th?  The 15th?
http://space.jaxa.jp/tnsc/tn-weather/data/weekly.gif (http://space.jaxa.jp/tnsc/tn-weather/data/weekly.gif)
Title: Re: H-IIA - ASTRO H - NET February 13, 2016
Post by: Steven Pietrobon on 02/13/2016 05:41 am
Still no word from JAXA on a new launch date. If it was launching today, that would be in about two hours time. The countdown clock at the link below is stopped, so I think its a good bet that ASTRO-H won't be leaving today.

http://global.jaxa.jp/projects/sat/astro_h/

Attached is an English version of the press kit.
Title: Re: H-IIA - ASTRO H - NET February 14, 2016
Post by: zubenelgenubi on 02/13/2016 05:56 pm
I guess we are still waiting for favorable satellite-launching weather.
http://space.jaxa.jp/tnsc/tn-weather/data/weekly.gif (http://space.jaxa.jp/tnsc/tn-weather/data/weekly.gif)
Title: Re: H-IIA - ASTRO H - NET February 14, 2016
Post by: William Graham on 02/13/2016 09:45 pm
Would have expected rollout by now if they were going for the 14th; no sign of the rocket as of 22:25 UTC so assuming this is now NET 15 February.

JAXA webcam at Tanegashima: http://space.jaxa.jp/tnsc/webcam/index_e.shtml
Title: Re: H-IIA - ASTRO H - NET February 14, 2016
Post by: astropl on 02/14/2016 04:37 am
Mitsubishi Heavy Industries, Ltd. and the Japan Aerospace Exploration Agency (JAXA) decided to conduct the launch of the H-IIA Launch Vehicle No.30 with the X-ray Astronomy Satellite (ASTRO-H) onboard from the Tanegashima Space Center as follows.

Scheduled date of launch: February 17 (Wed.), 2016 (Japan Standard Time, JST)
Launch time: 5:45 p.m. (JST)
Launch window: 5:45 thru 6:30 p.m. (JST)

http://global.jaxa.jp/press/2016/02/20160214_h2af30.html (http://global.jaxa.jp/press/2016/02/20160214_h2af30.html)
Title: Re: H-IIA - ASTRO H - February 17, 2016 (08:45 UTC)
Post by: input~2 on 02/14/2016 05:23 am
J0804/16 -  REF AIP SUP 004/16 ITEM 1,2,3 ROCKET H-2A-F30 WILL BE LAUNCHED LAUNCHING DATE/TIME : BTN 0845 AND 0930 ON 17 FEB 2016. SFC - UNL, 14 FEB 05:04 2016 UNTIL 17 FEB 09:19 2016 ESTIMATED. CREATED: 14 FEB 05:05 2016

Title: Re: H-IIA - ASTRO H - February 17, 2016 (08:45 UTC)
Post by: zubenelgenubi on 02/14/2016 07:46 pm
Here's the weather forecast  :)
http://space.jaxa.jp/tnsc/tn-weather/data/weekly.gif (http://space.jaxa.jp/tnsc/tn-weather/data/weekly.gif)
Title: Re: H-IIA - ASTRO H - February 17, 2016 (08:45 UTC)
Post by: Prober on 02/14/2016 09:32 pm
looks like a very overcast day.
Title: Re: LIVE: H-IIA - ASTRO H - February 17, 2016 (08:45 UTC)
Post by: Galactic Penguin SST on 02/16/2016 05:26 pm
Moved for live coverage.
Title: Re: LIVE: H-IIA - ASTRO H - February 17, 2016 (08:45 UTC)
Post by: Galactic Penguin SST on 02/16/2016 06:14 pm
While the newest ESA spacecraft is climbing to space, the next one for JAXA is about to roll out to the pad right now.

https://twitter.com/nvslive/status/699669073177612288 (https://twitter.com/nvslive/status/699669073177612288)
Title: Re: LIVE: H-IIA - ASTRO H - February 17, 2016 (08:45 UTC)
Post by: bolun on 02/16/2016 06:49 pm
From https://twitter.com/JAXA_en

ASTRO-H/H-IIA F30 Launch Live will start from 5:25 p.m. on Feb. 17(Wed. JST). Do not miss it. YouTube:

https://www.youtube.com/watch?v=kH-wJ1E00wA
Title: Re: LIVE: H-IIA - ASTRO H - February 17, 2016 (08:45 UTC)
Post by: William Graham on 02/16/2016 07:05 pm
Assembly building doors are open
Title: Re: LIVE: H-IIA - ASTRO H - February 17, 2016 (08:45 UTC)
Post by: northenarc on 02/16/2016 07:10 pm
 Can't get the rollout link to work.
Title: Re: LIVE: H-IIA - ASTRO H - February 17, 2016 (08:45 UTC)
Post by: Prober on 02/16/2016 07:27 pm
webcam snap
http://space.jaxa.jp/tnsc/webcam/index_e.shtml
Title: Re: LIVE: H-IIA - ASTRO H - February 17, 2016 (08:45 UTC)
Post by: William Graham on 02/16/2016 07:36 pm
Vehicle appears to be in motion
Title: Re: LIVE: H-IIA - ASTRO H - February 17, 2016 (08:45 UTC)
Post by: William Graham on 02/16/2016 07:41 pm
Approaching the pad
Title: Re: LIVE: H-IIA - ASTRO H - February 17, 2016 (08:45 UTC)
Post by: yoichi on 02/16/2016 11:06 pm
recorded live and some pictures
https://www.youtube.com/watch?v=Wb1vD2DArlg
Title: Re: LIVE: H-IIA - ASTRO H - February 17, 2016 (08:45 UTC)
Post by: yoichi on 02/16/2016 11:38 pm
http://h2a.mhi.co.jp/en/mission/countdown/h2a_f30.html

Second Go/No Go Decision -'Go'
February 17, 2016 09:15 JST
Final checks have been made for operational conditions of the launch vehicle, satellites, launch facilities, and tracking and control systems, as well as weather conditions. We now have gotten a go-ahead for loading the propellant, such as liquid oxygen and liquid hydrogen, into the launch vehicle. Propellant loading preparations are going to start.

Terminal countdown operation to start
February 17, 2016 09:20 JST
Terminal countdown operation has started. Access will now be restricted within a radius of 400 meters from the launch pad.
Title: Re: LIVE: H-IIA - ASTRO H - February 17, 2016 (08:45 UTC)
Post by: Chris Bergin on 02/17/2016 01:27 am
Super feature article for the mission by William Graham:
http://www.nasaspaceflight.com/2016/02/japanese-h-11a-astro-h-mission/

UTC folk have this much sleep time remaining! ;)
Title: Re: LIVE: H-IIA - ASTRO H - February 17, 2016 (08:45 UTC)
Post by: kaa on 02/17/2016 03:29 am
Courtesy of a colleague at the launch site.
Title: Re: LIVE: H-IIA - ASTRO H - February 17, 2016 (08:45 UTC)
Post by: Steven Pietrobon on 02/17/2016 06:52 am
54 minutes to launch.
Title: Re: LIVE: H-IIA - ASTRO H - February 17, 2016 (08:45 UTC)
Post by: yoichi on 02/17/2016 06:57 am
X-60 minutes
February 17, 2016 16:45 JST
It is 60 minutes before launch. The final countdown operation has started.

https://www.youtube.com/watch?v=sAVFkQw5K8Q
Title: Re: LIVE: H-IIA - ASTRO H - February 17, 2016 (08:45 UTC)
Post by: Steven Pietrobon on 02/17/2016 07:05 am
What's Japanese for "zoom"? :-)
Title: Re: LIVE: H-IIA - ASTRO H - February 17, 2016 (08:45 UTC)
Post by: Steven Pietrobon on 02/17/2016 07:06 am
He heard me!
Title: Re: LIVE: H-IIA - ASTRO H - February 17, 2016 (08:45 UTC)
Post by: Steven Pietrobon on 02/17/2016 07:07 am
Our launch vehicle.
Title: Re: LIVE: H-IIA - ASTRO H - February 17, 2016 (08:45 UTC)
Post by: Steven Pietrobon on 02/17/2016 07:08 am
The payload.
Title: Re: LIVE: H-IIA - ASTRO H - February 17, 2016 (08:45 UTC)
Post by: Steven Pietrobon on 02/17/2016 07:11 am
T-35 minutes.
Title: Re: LIVE: H-IIA - ASTRO H - February 17, 2016 (08:45 UTC)
Post by: Steven Pietrobon on 02/17/2016 07:15 am
T-30 minutes.
Title: Re: LIVE: H-IIA - ASTRO H - February 17, 2016 (08:45 UTC)
Post by: chewi on 02/17/2016 07:18 am
Mission logo
Title: Re: LIVE: H-IIA - ASTRO H - February 17, 2016 (08:45 UTC)
Post by: Steven Pietrobon on 02/17/2016 07:21 am
T-25 minutes. Event times.
Title: Re: LIVE: H-IIA - ASTRO H - February 17, 2016 (08:45 UTC)
Post by: Steven Pietrobon on 02/17/2016 07:23 am
Live picture.
Title: Re: LIVE: H-IIA - ASTRO H - February 17, 2016 (08:45 UTC)
Post by: Steven Pietrobon on 02/17/2016 07:25 am
T-20 minutes. JAXA coverage should be starting soon.
Title: Re: LIVE: H-IIA - ASTRO H - February 17, 2016 (08:45 UTC)
Post by: Steven Pietrobon on 02/17/2016 07:26 am
Start of JAXA coverage.
Title: Re: LIVE: H-IIA - ASTRO H - February 17, 2016 (08:45 UTC)
Post by: Steven Pietrobon on 02/17/2016 07:28 am
Nice promo.
Title: Re: LIVE: H-IIA - ASTRO H - February 17, 2016 (08:45 UTC)
Post by: Steven Pietrobon on 02/17/2016 07:31 am
T-15 minutes.
Title: Re: LIVE: H-IIA - ASTRO H - February 17, 2016 (08:45 UTC)
Post by: Chris Bergin on 02/17/2016 07:34 am
JAXA out of promos...
Title: Re: LIVE: H-IIA - ASTRO H - February 17, 2016 (08:45 UTC)
Post by: Chris Bergin on 02/17/2016 07:35 am
I do hope we get some "Fan Fun"! :)
Title: Re: LIVE: H-IIA - ASTRO H - February 17, 2016 (08:45 UTC)
Post by: Steven Pietrobon on 02/17/2016 07:35 am
T-11 minutes.
Title: Re: LIVE: H-IIA - ASTRO H - February 17, 2016 (08:45 UTC)
Post by: Chris Bergin on 02/17/2016 07:35 am
Title: Re: LIVE: H-IIA - ASTRO H - February 17, 2016 (08:45 UTC)
Post by: Steven Pietrobon on 02/17/2016 07:35 am
T-10 minutes.
Title: Re: LIVE: H-IIA - ASTRO H - February 17, 2016 (08:45 UTC)
Post by: Steven Pietrobon on 02/17/2016 07:36 am
T-9 minutes.
Title: Re: LIVE: H-IIA - ASTRO H - February 17, 2016 (08:45 UTC)
Post by: Steven Pietrobon on 02/17/2016 07:38 am
T-8 minutes. Terminal count has started.
Title: Re: LIVE: H-IIA - ASTRO H - February 17, 2016 (08:45 UTC)
Post by: Steven Pietrobon on 02/17/2016 07:39 am
T-7 minutes. The range system is ready.
Title: Re: LIVE: H-IIA - ASTRO H - February 17, 2016 (08:45 UTC)
Post by: Chris Bergin on 02/17/2016 07:39 am
Range is green.
Title: Re: LIVE: H-IIA - ASTRO H - February 17, 2016 (08:45 UTC)
Post by: Chris Bergin on 02/17/2016 07:40 am
Long range view.
Title: Re: LIVE: H-IIA - ASTRO H - February 17, 2016 (08:45 UTC)
Post by: Steven Pietrobon on 02/17/2016 07:40 am
T-6 minutes. Weather is fine. 11.7 C. 5m/s from NE.
Title: Re: LIVE: H-IIA - ASTRO H - February 17, 2016 (08:45 UTC)
Post by: Steven Pietrobon on 02/17/2016 07:41 am
T-5 minutes. The payloads are ready.
Title: Re: LIVE: H-IIA - ASTRO H - February 17, 2016 (08:45 UTC)
Post by: Chris Bergin on 02/17/2016 07:41 am
Auto sequence.
Title: Re: LIVE: H-IIA - ASTRO H - February 17, 2016 (08:45 UTC)
Post by: Steven Pietrobon on 02/17/2016 07:42 am
T-4 minutes.
Title: Re: LIVE: H-IIA - ASTRO H - February 17, 2016 (08:45 UTC)
Post by: Steven Pietrobon on 02/17/2016 07:43 am
T-3 minutes.
Title: Re: LIVE: H-IIA - ASTRO H - February 17, 2016 (08:45 UTC)
Post by: Chris Bergin on 02/17/2016 07:43 am
Internal power. Into Press.
Title: Re: LIVE: H-IIA - ASTRO H - February 17, 2016 (08:45 UTC)
Post by: Steven Pietrobon on 02/17/2016 07:44 am
T-2 minutes. Second stage oxygen and hydrogen systems are ready.
Title: Re: LIVE: H-IIA - ASTRO H - February 17, 2016 (08:45 UTC)
Post by: Chris Bergin on 02/17/2016 07:44 am
T-60 seconds.
Title: Re: LIVE: H-IIA - ASTRO H - February 17, 2016 (08:45 UTC)
Post by: Steven Pietrobon on 02/17/2016 07:45 am
T-1 minute.
Title: Re: LIVE: H-IIA - ASTRO H - February 17, 2016 (08:45 UTC)
Post by: Steven Pietrobon on 02/17/2016 07:46 am
Liftoff!
Title: Re: LIVE: H-IIA - ASTRO H - February 17, 2016 (08:45 UTC)
Post by: Chris Bergin on 02/17/2016 07:47 am
LAUNCH!!

Title: Re: LIVE: H-IIA - ASTRO H - February 17, 2016 (08:45 UTC)
Post by: Steven Pietrobon on 02/17/2016 07:47 am
T+1 minute.
Title: Re: LIVE: H-IIA - ASTRO H - February 17, 2016 (08:45 UTC)
Post by: Chris Bergin on 02/17/2016 07:47 am
Title: Re: LIVE: H-IIA - ASTRO H - February 17, 2016 (08:45 UTC)
Post by: Chris Bergin on 02/17/2016 07:47 am
Title: Re: LIVE: H-IIA - ASTRO H - February 17, 2016 (08:45 UTC)
Post by: Chris Bergin on 02/17/2016 07:47 am
There go the boosters.
Title: Re: LIVE: H-IIA - ASTRO H - February 17, 2016 (08:45 UTC)
Post by: Steven Pietrobon on 02/17/2016 07:48 am
SRB burnout and jettison.
Title: Re: LIVE: H-IIA - ASTRO H - February 17, 2016 (08:45 UTC)
Post by: Steven Pietrobon on 02/17/2016 07:49 am
T+3 minutes. Flight trajectory is normal.
Title: Re: LIVE: H-IIA - ASTRO H - February 17, 2016 (08:45 UTC)
Post by: Chris Bergin on 02/17/2016 07:50 am
Still in view. Nominal performance.
Title: Re: LIVE: H-IIA - ASTRO H - February 17, 2016 (08:45 UTC)
Post by: Steven Pietrobon on 02/17/2016 07:50 am
T+4 minutes.

Fairing jettison.
Title: Re: LIVE: H-IIA - ASTRO H - February 17, 2016 (08:45 UTC)
Post by: Chris Bergin on 02/17/2016 07:50 am
Title: Re: LIVE: H-IIA - ASTRO H - February 17, 2016 (08:45 UTC)
Post by: fs10inator on 02/17/2016 07:50 am
This view alone reminds me of the first H-IIA launch...   ;D
Title: Re: LIVE: H-IIA - ASTRO H - February 17, 2016 (08:45 UTC)
Post by: Steven Pietrobon on 02/17/2016 07:50 am
T+5 minutes. You can see the fairings!
Title: Re: LIVE: H-IIA - ASTRO H - February 17, 2016 (08:45 UTC)
Post by: Steven Pietrobon on 02/17/2016 07:52 am
X+6 minutes.
Title: Re: LIVE: H-IIA - ASTRO H - February 17, 2016 (08:45 UTC)
Post by: Chris Bergin on 02/17/2016 07:52 am
Staging.
Title: Re: LIVE: H-IIA - ASTRO H - February 17, 2016 (08:45 UTC)
Post by: Steven Pietrobon on 02/17/2016 07:53 am
First stage cutoff.

Second stage ignition.
Title: Re: LIVE: H-IIA - ASTRO H - February 17, 2016 (08:45 UTC)
Post by: Steven Pietrobon on 02/17/2016 07:54 am
X+8 minutes. Flight trajectory normal.
Title: Re: LIVE: H-IIA - ASTRO H - February 17, 2016 (08:45 UTC)
Post by: Steven Pietrobon on 02/17/2016 07:55 am
X+9 minutes.
Title: Re: LIVE: H-IIA - ASTRO H - February 17, 2016 (08:45 UTC)
Post by: Steven Pietrobon on 02/17/2016 07:56 am
X+10 minutes. Flight progressing smoothly.
Title: Re: LIVE: H-IIA - ASTRO H - February 17, 2016 (08:45 UTC)
Post by: Steven Pietrobon on 02/17/2016 07:57 am
X+11 minutes.
Title: Re: LIVE: H-IIA - ASTRO H - February 17, 2016 (08:45 UTC)
Post by: Chris Bergin on 02/17/2016 07:57 am
Nearing the end of the one and only burn.
Title: Re: LIVE: H-IIA - ASTRO H - February 17, 2016 (08:45 UTC)
Post by: Steven Pietrobon on 02/17/2016 07:58 am
X+12 minutes. All normal.
Title: Re: LIVE: H-IIA - ASTRO H - February 17, 2016 (08:45 UTC)
Post by: Steven Pietrobon on 02/17/2016 08:00 am
S+13 minutes. The flight is progressing very well.

Second stage cutoff.

Separation!
Title: Re: LIVE: H-IIA - ASTRO H - February 17, 2016 (08:45 UTC)
Post by: Chris Bergin on 02/17/2016 08:00 am
Primary payload S/C Sep!
Title: Re: LIVE: H-IIA - ASTRO H - February 17, 2016 (08:45 UTC)
Post by: Steven Pietrobon on 02/17/2016 08:01 am
Launch results will be presented at the press conference.
Title: Re: LIVE: H-IIA - ASTRO H - February 17, 2016 (08:45 UTC)
Post by: ZachS09 on 02/17/2016 08:03 am
Congrats to the ASTRO H team for a successful launch! I'm impressed!  :)
Title: Re: LIVE: H-IIA - ASTRO H - February 17, 2016 (08:45 UTC)
Post by: Steven Pietrobon on 02/17/2016 08:03 am
Launch replay.
Title: Re: LIVE: H-IIA - ASTRO H - February 17, 2016 (08:45 UTC)
Post by: Chris Bergin on 02/17/2016 08:04 am
I'd love to visit there....
Title: Re: LIVE: H-IIA - ASTRO H - February 17, 2016 (08:45 UTC)
Post by: Chris Bergin on 02/17/2016 08:04 am
Replays.
Title: Re: LIVE: H-IIA - ASTRO H - February 17, 2016 (08:45 UTC)
Post by: Chris Bergin on 02/17/2016 08:05 am
I've got to go to work. So thanks again to Steven.

William's article updated:
http://www.nasaspaceflight.com/2016/02/japanese-h-11a-astro-h-mission/
Title: Re: LIVE: H-IIA - ASTRO H - February 17, 2016 (08:45 UTC)
Post by: Steven Pietrobon on 02/17/2016 08:08 am
Another view.
Title: Re: LIVE: H-IIA - ASTRO H - February 17, 2016 (08:45 UTC)
Post by: Steven Pietrobon on 02/17/2016 08:12 am
More replays.
Title: Re: LIVE: H-IIA - ASTRO H - February 17, 2016 (08:45 UTC)
Post by: yoichi on 02/17/2016 08:13 am
Title: Re: LIVE: H-IIA - ASTRO H - February 17, 2016 (08:45 UTC)
Post by: Steven Pietrobon on 02/17/2016 08:14 am
End of webcast.

Still waiting on confirmation of separation of secondary payloads. The last separation should be in a couple minutes time.
Title: Re: LIVE: H-IIA - ASTRO H - February 17, 2016 (08:45 UTC)
Post by: yoichi on 02/17/2016 09:40 am
http://global.jaxa.jp/press/2016/02/20160217_h2af30.html

Launch Success of H-IIA Launch Vehicle No. 30 with X-ray Astronomy Satellite (ASTRO-H) Onboard

February 17, 2016 (JST)
Mitsubishi Heavy Industries, Ltd.
National Research and Development Agency
Japan Aerospace Exploration Agency (JAXA)

Mitsubishi Heavy Industries, Ltd. and the Japan Aerospace Exploration Agency (JAXA) successfully launched the H-IIA Launch Vehicle No. 30 (H-IIA F30) with the X-ray Astronomy Satellite (ASTRO-H) onboard at 5:45 p.m. on February 17, 2016 (Japan Standard Time, JST) from the Tanegashima Space Center. The launch vehicle flew as planned, and at approximately 14 minutes and 15 seconds after liftoff, the separation of ASTRO-H was confirmed.

 The success marked the 30th milestone launch of the H-IIA, and the launch success rate reached almost 97%. In addition, the last 10 launches lifted off on time (except for some launch delays due to weather factors), and that has proved the high reliability and quality of the H-IIA Launch Vehicle. We can and will respond to demands of launch service users with confidence and high reliability.

 We would like to express our profound appreciation for the cooperation and support of all related personnel and organizations that helped contribute to the successful launch of the H-IIA F30.
Title: Re: LIVE: H-IIA - ASTRO H - February 17, 2016 (08:45 UTC)
Post by: input~2 on 02/17/2016 10:11 am
A first object has been cataloged by USSTRATCOM

2016-012A/41337 in 551 x 579 km x 31.01°
Title: Re: LIVE: H-IIA - ASTRO H - February 17, 2016 (08:45 UTC)
Post by: yoichi on 02/17/2016 10:25 am
http://global.jaxa.jp/press/2016/02/20160217_hitomi.html

X-ray Astronomy Satellite (ASTRO-H) Solar Array Paddles Deployment and Name Decided

February 17, 2016 (JST)
National Research and Development Agency
Japan Aerospace Exploration Agency (JAXA)

The Japan Aerospace Exploration Agency (JAXA) confirmed that the X-ray Astronomy Satellite (ASTRO-H) has deployed its solar array paddles (SAPs) normally through data transmitted from the satellite and received at the Uchinoura Ground Station at 5:45 p.m. on February 17, 2016. ASTRO-H was launched by the H-IIA Launch Vehicle No. 30 from the Tahegashima Space Center at 5:45 p.m. on the same day.

 The satellite is currently in good health.

 ASTRO-H is the eye to study the hot and energetic universe. Therefore we name ASTRO-H, “Hitomi”. The word Hitomi generally means “eye”, and specifically the pupil, or entrance window of the eye – the aperture!
 There is also an ancient legend that inspires the name Hitomi.
 "One day, many years ago, a painter was drawing four white dragons on a street. He finished drawing the dragons, but without “Hitomi”. People who looked at the painting said “why don’t you paint Hitomi, it is not complete! The painter hesitated, but people pressured him. The painter then drew Hitomi on two of the four dragons. Immediately, these dragons came to life and flew up into the sky. The two dragons without Hitomi remained still. (Put Hitomi of Dragon in the drawing).”
The inspiration of this story is that Hitomi is regarded as the “One last, but most important part”, and so we wish ASTRO-H to be the essential mission to solve mysteries of the universe in X-rays. Hitomi refers to the aperture of the eye, the part where incoming light is absorbed. From this, Hitomi reminds us of a black hole. We will observe Hitomi in the Universe using the Hitomi satellite!

 For your information, a nano-satellite “PRISM”, which was developed by Profs Nakasuka and Funase laboratory, at the University of Tokyo, and is currently in operation, shares the same name of Hitomi as its nickname. The laboratory kindly accepted our request to use the same name for ASTRO-H, and we would like to express our sincere appreciation for their cooperation.

(Next press release)
We will inform you of the completion of the orbit calculation result of Hitomi (ASTRO-H) in the next press release on Feb. 18 or later.
Title: Re: LIVE: H-IIA - ASTRO H - February 17, 2016 (08:45 UTC)
Post by: Mapperuo on 02/17/2016 11:00 am
https://www.youtube.com/watch?v=dyDzayX4_uw
Title: Re: LIVE: H-IIA - ASTRO H - February 17, 2016 (08:45 UTC)
Post by: WBY1984 on 02/17/2016 11:29 am
Beautiful launch, I'm sorry I missed it. Congrats to JAXA/National Research and Development Agency!
Title: Re: LIVE: H-IIA - ASTRO H - February 17, 2016 (08:45 UTC)
Post by: Star One on 02/17/2016 12:07 pm
Congratulations to all concerned in the launch of this important astronomical payload.
Title: Re: LIVE: H-IIA - ASTRO H - February 17, 2016 (08:45 UTC)
Post by: kaa on 02/17/2016 12:50 pm
Launch photos from Scott Porter of the SXS team.
Title: Re: LIVE: H-IIA - ASTRO H - February 17, 2016 (08:45 UTC)
Post by: kaa on 02/17/2016 12:51 pm
Title: Re: LIVE: H-IIA - ASTRO H - February 17, 2016 (08:45 UTC)
Post by: jacqmans on 02/17/2016 03:31 pm
Launch of ASTRO-H, New X-ray Eyes on the Universe

Japan’s next-generation telescope will give Canadian astronomers a new eye on the most cataclysmic events in the universe.

Longueuil, Quebec, February 17, 2016 – ASTRO-H, Japan’s flagship space observatory, lifted off from the Tanegashima Space Center today at 3:45 a.m. EST (12:45 a.m. PST) on a mission toexplore mysterious phenomena in the universe in unprecedented detail. Itis equipped with a Canadian laser measurement system,the Canadian ASTRO-H Metrology System (CAMS), provided by the Canadian Space Agency (CSA).

In return for CAMS, three Canadians will be part of the mission’s science team and have privileged access to the space observatory to study black holes, supernovas, and galaxy clusters. They will also investigate how galaxies like our own Milky Way were formed and how matter behaves under extreme conditions.

Professor Luigi Gallo of Saint Mary’s University leads Canada’s science team, which includes Professor Brian McNamara of the University of Waterloo and Professor Samar Safi‑Harb of the University of Manitoba, as well as their respective teams of researchers and students.

Quick facts


·          Built by Neptec Design Group Ltd., CAMS is a precision optics technology that will calibrate measurements taken with the observatory’s Hard X-ray Telescope, significantly enhancing the quality of its images. Neptec designed, manufactured, assembled and tested CAMS in just four years.

·          CAMS consists of a laser and detector attached to one end of the spacecraft and a cube mirror located at the opposite end on an extendable mast, 12 metres away. The mast tends to bend and twist due to the extreme temperature variations in space. CAMS will precisely measure the mast’s distortions to a level of accuracy equivalent to the width of two human hairs.

·          The Canadian science team will have access to the proprietary data during the first year of the observatory’s operations, after which the entire Canadian astronomy community will have opportunities to propose ideas for further space-based investigations.

·          The Canadian Space Agency’s total investment in ASTRO-H is estimated at $10 million (including taxes) over seven years (including industry contracts and support for the science team). 

Quotes

“I am delighted that the Japan Aerospace Exploration Agency has successfully launched ASTRO-H—yet another fruitful scientific collaboration between our two countries. Like many Canadians, I look forward to the amazing discoveries from this space-based observatory, and am very much interested to see how Canadian scientists will help advance humankind’s knowledge of the universe.”

The Honourable Navdeep Bains, Minister of Innovation, Science and Economic Development

“CAMS is a perfect example where a strategic investment by the Canadian Space Agency in Canadian technology has led directly to export sales and value-added job creation opportunities for Canada. This project keeps Canada on the leading edge of optical sensor space applications.”

Paul Nephin, CEO, Neptec Design Group Ltd.
Title: Re: LIVE: H-IIA - ASTRO H (Hitomi) - February 17, 2016 (08:45 UTC)
Post by: bolun on 02/17/2016 06:56 pm
Liftoff for ASTRO-H now in orbit as Hitomi

17 February 2016

JAXA's ASTRO-H satellite was launched earlier today on an H-IIA rocket from the Tanegashima Space Center, situated on a small island in the south of Japan. This space-borne observatory, developed in collaboration with institutions in Japan, the US, Canada and Europe, will probe the sky in the X-ray and soft gamma ray portions of the electromagnetic spectrum.

The rocket lifted off at 08:45 GMT (09:45 CET) on 17 February and, approximately 14 minutes and 15 seconds after liftoff, separation of the satellite was confirmed. JAXA confirmed that the satellite has deployed its solar array paddles normally through data transmitted from the satellite and received at the Uchinoura Ground Station.

 Traditionally, Japan's astronomy satellites receive a provisional name during the implementation phase, and are then renamed after launch.

The now in-orbit ASTRO-H satellite received its new designation today: Hitomi, a Japanese word used to describe the 'eye', and more specifically the pupil, or entrance window of the eye. The name Hitomi, which is also linked to an ancient legend about a painter drawing dragons, is a fitting description for this satellite that will be a new eye to study the hot and energetic Universe.

A high-energy observatory, Hitomi is designed to study some of the most powerful phenomena in the cosmos, ranging from supernova explosions at the end of a star's life to supermassive black holes devouring matter at the centre of distant galaxies, and the hot gas permeating galaxy clusters, the largest bound structures in the Universe.

ESA contributed to the mission by partly funding various elements of the four science instruments, by providing three European scientists to serve as science advisors and by contributing one scientist to the operations team in Japan. In return for ESA's contribution, European scientists will be able to compete for about 8% of the observational time.

http://sci.esa.int/hitomi/57421-liftoff-for-astro-h-now-in-orbit-as-hitomi/

Image credit: JAXA
Title: Re: LIVE: H-IIA - ASTRO-H (Hitomi) - February 17, 2016 (08:45 UTC)
Post by: Rocket Science on 02/17/2016 11:27 pm
Two for two today! Congrats to all for a job well done and for the great coverage from "Team NSF"! ;)

Excellent article William, thank you! :)
Title: Re: LIVE: H-IIA - ASTRO-H (Hitomi) - February 17, 2016 (08:45 UTC)
Post by: yoichi on 02/17/2016 11:31 pm
http://global.jaxa.jp/press/2016/02/20160218_hitomi.html

X-ray Astronomy Satellite “Hitomi” (ASTRO-H) Orbit Calculation Result

February 18, 2016 (JST)
National Research and Development Agency
Japan Aerospace Exploration Agency (JAXA)

The Japan Aerospace Exploration Agency (JAXA) confirmed that the X-ray Astronomy Satellite “Hitomi” (ASTRO-H) was injected into the planned orbit as follows after its orbit calculation.

Orbit Calculation Result
                                    Actual value     Planned value
Apogee altitude                576.5 km           575.0 km
Perigee altitude                574.4 km           574.0 km
Inclination                         31.0 deg            31.0 deg
Period                               96.2 min            96.2 min

Hitomi is now in a stable condition.

(Next press release)
We will inform you of the completion of the Hitomi’s critical operation phase (*) in the next press release, which is schedule to be released on Feb. 28 (Sun.) The release date is subject to change.

* Critical operation phase
 The critical operation phase is a period from the separation from the launch vehicle till the establishment of the stable operation in space including the deployment of the solar array paddles and verification of the attitude control system and tracking and control facility functions.
Title: Re: LIVE: H-IIA - ASTRO-H (Hitomi) - February 17, 2016 (08:45 UTC)
Post by: Steven Pietrobon on 02/18/2016 02:36 am
Anybody have confirmation that the secondary payloads were released?
Title: Re: LIVE: H-IIA - ASTRO-H (Hitomi) - February 17, 2016 (08:45 UTC)
Post by: Fuji on 02/18/2016 04:39 am
Yes, all paylods were confirmed. JAXA Digital  Archives released separation videos just now.
Title: Re: LIVE: H-IIA - ASTRO-H (Hitomi) - February 17, 2016 (08:45 UTC)
Post by: yoichi on 02/18/2016 07:28 am
Yes, all paylods were confirmed. JAXA Digital  Archives released separation videos just now.

http://jda.jaxa.jp/category_v.php?lang=e&page=&category1=1&category2=5&category3=609&page_pics=50
Title: Re: LIVE: H-IIA - Hitomi (ASTRO-H) - February 17, 2016 (08:45 UTC)
Post by: input~2 on 02/18/2016 08:15 pm
A first object has been cataloged by USSTRATCOM

2016-012A/41337 in 551 x 579 km x 31.01°
from latest TLEs, 5 objects now:

2016-012A/41337 in 565 x 581 km x 31.00° (Hitomi)
2016-012B/41338 in 559 x 579 km x 31.00°
2016-012C/41339 in 559 x 578 km x 31.01°
2016-012D/41340 in 558 x 578 km x 31.01°
2016-012E/41341 in 543 x 569 km x 30.62° (H-2A 2nd stage)
Title: Re: LIVE: H-IIA - Hitomi (ASTRO-H) - February 17, 2016 (08:45 UTC)
Post by: Steven Pietrobon on 02/19/2016 09:17 am
Here are captures of the separation events.

Congratulations to JAXA and ISAS for the successful launch!
Title: Re: LIVE: H-IIA - Hitomi (ASTRO-H) - February 17, 2016 (08:45 UTC)
Post by: yoichi on 02/26/2016 01:47 pm
X線天文衛星「ひとみ」打ち上げクイックレビュー
 Launch of X-ray Astronomy Satellite "Hitomi" Quick reviewed movie.

https://www.youtube.com/watch?v=rHNGDQrEh2Y
Title: Re: LIVE: H-IIA - Hitomi (ASTRO-H) - February 17, 2016 (08:45 UTC)
Post by: Fuji on 02/29/2016 01:39 pm
Astro-H's critical phase is finished.
Extensible Optical Bench (EOB) deployment is finished.

Japanese press release.
http://www.jaxa.jp/press/2016/02/20160229_hitomi_j.html
Title: Re: LIVE: H-IIA - Hitomi (ASTRO-H) - February 17, 2016 (08:45 UTC)
Post by: yoichi on 03/01/2016 02:39 am
http://global.jaxa.jp/press/2016/02/20160229_hitomi.html

X-ray Astronomy Satellite “Hitomi” (ASTRO-H) Completion of Critical Operation Phase

February 29, 2016 (JST)
National Research and Development Agency
Japan Aerospace Exploration Agency (JAXA)

The Japan Aerospace Exploration Agency (JAXA) confirmed the completion of a sequence of important operations of the X-ray Astronomy Satellite “Hitomi” (ASTRO-H), including turning the cooling system on, test operation of the Soft X-ray Spectrometer (SXS), and extending the Extensible Optical Bench (EOB). With this confirmation, the critical operation phase(*1) of Hitomi was completed.

Hitomi is now in a stable condition.

We turned on the SXS cooling system for test operations after the launch on February 17, then confirmed that it reached the absolute temperature 50 millidegrees (minus 273.1 degrees Celsius) at around on February 22.

 JAXA will perform the initial functional verification of the onboard instruments for about one and half months, then we will conduct calibration observations(*2) for another one and half months.

 We would like to express our sincere appreciation to all parties and personnel concerned for their support and cooperation with Hitomi’s launch and tracking control operations.

*1 Critical operation phase
 The critical operation phase is a period from the separation from the launch vehicle till the establishment of the stable operation in space including the deployment of the solar array paddles, completing the establishment of the attitude control system, turning on the cooling system, EOB extension, and the functional verification of the ground tracking and control facility.
*2 Calibration observation
 By observing a well-known celestial body, we can understand the unique features of the onboard instruments to improve observation precision.

Title: Re: LIVE: H-IIA - Hitomi (ASTRO-H) - February 17, 2016 (08:45 UTC)
Post by: jacqmans on 03/27/2016 11:29 am
March 27, 2016 (JST)

Communication failure of X-ray Astronomy Satellite "Hitomi" (ASTRO-H)

The Japan Aerospace Exploration Agency (JAXA) found that communication with the X-ray Astronomy Satellite "Hitomi" (ASTRO-H), launched on February 17, 2016 (JST),  failed from the start of its operation originally scheduled
at 16:40, Saturday March 26 (JST).  Up to now, JAXA has not been able to figure out the state of health of the satellite.

While the cause of communication failure is under investigation, JAXA received short signal from the satellite, and is working for recovery.

Under this circumstance, JAXA set up emergency headquarters, headed by the President, for recovery and investigation.  The headquarters held its first meeting today, and has been working for recovery and the investigation of
the cause.  Updates will be announced as available, at the JAXA website.


URL:
http://global.jaxa.jp/press/2016/03/20160327_hitomi.html
Title: Re: LIVE: H-IIA - Hitomi (ASTRO-H) - February 17, 2016 (08:45 UTC)
Post by: Liss on 03/27/2016 02:30 pm
Orbit of object 41337 has changed from 564.6x580.5 to 561.0x580.1 km just before the failed comm pass. Seems to be a real problem :-(
Title: Re: LIVE: H-IIA - Hitomi (ASTRO-H) - February 17, 2016 (08:45 UTC)
Post by: Galactic Penguin SST on 03/27/2016 03:21 pm
March 27, 2016 (JST)

Communication failure of X-ray Astronomy Satellite "Hitomi" (ASTRO-H)

The Japan Aerospace Exploration Agency (JAXA) found that communication with the X-ray Astronomy Satellite "Hitomi" (ASTRO-H), launched on February 17, 2016 (JST),  failed from the start of its operation originally scheduled
at 16:40, Saturday March 26 (JST).  Up to now, JAXA has not been able to figure out the state of health of the satellite.

While the cause of communication failure is under investigation, JAXA received short signal from the satellite, and is working for recovery.

Under this circumstance, JAXA set up emergency headquarters, headed by the President, for recovery and investigation.  The headquarters held its first meeting today, and has been working for recovery and the investigation of
the cause.  Updates will be announced as available, at the JAXA website.


URL:
http://global.jaxa.jp/press/2016/03/20160327_hitomi.html

Doesn't sound too good if JSpOC found 5 pieces of things separating from the satellite about 40 minutes after the contact lost time, even if the debris can be very very small....  :-X

JSpOC ‏@JointSpaceOps
JSpOC ID’d 2 breakups: SL-12 R/B(33472) @~0145z, 27Mar–21 pieces. ASTRO H(41337) @~0820z, 26Mar–5 pieces. Events not related. @SpaceTrackOrg
Title: Re: LIVE: H-IIA - Hitomi (ASTRO-H) - February 17, 2016 (08:45 UTC)
Post by: Star One on 03/27/2016 06:19 pm
Must be considering of a strike by space debris?
Title: Re: LIVE: H-IIA - Hitomi (ASTRO-H) - February 17, 2016 (08:45 UTC)
Post by: ugordan on 03/27/2016 07:32 pm
Must be considering of a strike by space debris?

A RUD on the satellite itself seems more likely, IMHO.
Title: Re: LIVE: H-IIA - Hitomi (ASTRO-H) - February 17, 2016 (08:45 UTC)
Post by: zubenelgenubi on 03/27/2016 07:44 pm
Has anyone (who can share their images with the public) imaged Astro-H from their ground-based observatory?  (Like the people who image ISS--and I know Astro-H is much smaller than ISS)

If so, could before and after-incident images reveal information?

Another thought: if the satellite's optical magnitude is observed to be varying regularly by satellite observers during satellite passes, then the satellite could be deduced to be tumbling.

I don't expect an answer to these questions, but I'll ask it to put it out there...
Will "national technical means" be used to investigate?  If not American assets, could the Japanese use their IGS optical reconnaissance satellites to perform "sat-squared" imagery?

Background material in a TSR article by Dwayne Day: Those magnificent spooks and their spying machine: The spies help rescue Skylab (http://www.thespacereview.com/article/2299/1)
Title: Re: LIVE: H-IIA - Hitomi (ASTRO-H) - February 17, 2016 (08:45 UTC)
Post by: zubenelgenubi on 03/27/2016 07:48 pm
Must be considering of a strike by space debris?

A RUD on the satellite itself seems more likely, IMHO.
What could RUD on Hitomi?  Propellant tanks?  Cryogen plumbing for cooling detectors?  Etc.?
Title: Re: LIVE: H-IIA - Hitomi (ASTRO-H) - February 17, 2016 (08:45 UTC)
Post by: Skyrocket on 03/27/2016 09:04 pm
Must be considering of a strike by space debris?

A RUD on the satellite itself seems more likely, IMHO.
What could RUD on Hitomi?  Propellant tanks?  Cryogen plumbing for cooling detectors?  Etc.?

Yes, cryogen plumbing is a prime suspect, as the problem was coincident with beginning of operations. Battery malfunction could also be a cause of RUD.
Title: Re: LIVE: H-IIA - Hitomi (ASTRO-H) - February 17, 2016 (08:45 UTC)
Post by: eric z on 03/27/2016 10:24 pm
Here is a story about the situation on NHK-TV now.
http://www3.nhk.or.jp/nhkworld/en/news/20160328_02/  (http://www3.nhk.or.jp/nhkworld/en/news/20160328_02/)
Title: Re: LIVE: H-IIA - Hitomi (ASTRO-H) - February 17, 2016 (08:45 UTC)
Post by: cyth on 03/27/2016 11:30 pm
best science experiment of the decade has gone   :'(
Title: Re: LIVE: H-IIA - Hitomi (ASTRO-H) - February 17, 2016 (08:45 UTC)
Post by: Jim on 03/28/2016 12:13 am
best science experiment of the decade has gone   :'(

Based on what criteria?
Title: Re: LIVE: H-IIA - Hitomi (ASTRO-H) - February 17, 2016 (08:45 UTC)
Post by: gwiz on 03/28/2016 09:32 am
Reports of tumbling from amateur trackers:
http://www.satobs.org/seesat/Mar-2016/0176.html
Title: Re: LIVE: H-IIA - Hitomi (ASTRO-H) - February 17, 2016 (08:45 UTC)
Post by: Svetoslav on 03/28/2016 03:39 pm
Should we use this thread for discussion, or the other one?
Title: Re: LIVE: H-IIA - Hitomi (ASTRO-H) - February 17, 2016 (08:45 UTC)
Post by: mtakala24 on 03/28/2016 04:03 pm
Lets use this thread. There is no need for a separate thread for this unfortunate event.
Title: Re: LIVE: H-IIA - Hitomi (ASTRO-H) - February 17, 2016 (08:45 UTC)
Post by: Chris Bergin on 03/28/2016 04:48 pm
We should stay on this thread.

Sadly, the spacecraft is no more:
JSpOC ‏@JointSpaceOps  11m11 minutes ago
Update: Analysis shows ASTRO H breakup occurred 26Mar @ 0142z
+/- 11mins. JSpOC confirmed breakup @ 0820z. @JAXA_en @SpaceTrackOrg
Title: Re: LIVE: H-IIA - Hitomi (ASTRO-H) - February 17, 2016 (08:45 UTC)
Post by: Galactic Penguin SST on 03/28/2016 04:53 pm
We should stay on this thread.

Sadly, the spacecraft is no more:
JSpOC ‏@JointSpaceOps  11m11 minutes ago
Update: Analysis shows ASTRO H breakup occurred 26Mar @ 0142z
+/- 11mins. JSpOC confirmed breakup @ 0820z. @JAXA_en @SpaceTrackOrg

I am not sure this actually means that the satellite has completely broke up. As Jonathan McDowell wrote earlier:

Jonathan McDowell ‏@planet4589
"Debris" doesn't mean Hitomi's in little pieces. It means little pieces
have come off it. Satellite might be basically intact,we don't know

JAXA also reported that they have brief contacts with it after the original "breakup" time, and certain did have contact after the revised "breakup" time since they lost contact at 07:45 UTC.
Title: Re: LIVE: H-IIA - Hitomi (ASTRO-H) - February 17, 2016 (08:45 UTC)
Post by: belegor on 03/28/2016 04:59 pm
https://twitter.com/planet4589/status/714462322761338880 (https://twitter.com/planet4589/status/714462322761338880)
Quote
PSA: When @JointSpaceOps says "breakup", don't mean what you or I would. If saw dandruff falling from your head they'd say you'd broken up.
Title: Re: LIVE: H-IIA - Hitomi (ASTRO-H) - February 17, 2016 (08:45 UTC)
Post by: JimO on 03/28/2016 08:12 pm
Update: Analysis shows ASTRO H breakup occurred 26Mar @ 0142z +/- 11mins.

WHERE did it occur lat/long? Anywhere in range of North Korea?
Title: Re: LIVE: H-IIA - Hitomi (ASTRO-H) - February 17, 2016 (08:45 UTC)
Post by: russianhalo117 on 03/28/2016 09:02 pm
This might be of use.

Japanese Presser:
LNK: http://www.jaxa.jp/press/2016/03/20160327_hitomi_j.html

X線天文衛星「ひとみ」(ASTRO-H)の通信異常について

平成28年3月27日
国立研究開発法人宇宙航空研究開発機構

 平成28(2016)年2月17日に打ち上げられたX線天文衛星「ひとみ」(ASTRO-H)は、3月26日(土)の運用開始時(午後4時40分頃)に衛星からの電波を正常に受信できず、その後も衛星の状態を確認できない状況が続いています。現時点で、通信不良の原因は不明ですが、短時間ではあるものの衛星からの電波を受信できたことから、引き続き衛星の復旧に努めております。
 この衛星状態を受け、復旧及び原因調査に万全を期すため、本日、国立研究開発法人宇宙航空研究開発機構内に理事長を長とする対策本部を設置し、第1回会合を開催いたしました。ひとみの通信の復旧及び原因調査について全社的に取り組んでおります。対応状況、調査結果については随時お知らせいたします。

-----------------------

English Presser:
LINK: http://global.jaxa.jp/press/2016/03/20160327_hitomi.html

Communication anomaly of X-ray Astronomy Satellite “Hitomi” (ASTRO-H)

March 27, 2016 (JST)

National Research and Development Agency
Japan Aerospace Exploration Agency (JAXA)

The Japan Aerospace Exploration Agency (JAXA) found that communication with the X-ray Astronomy Satellite “Hitomi” (ASTRO-H), launched on February 17, 2016 (JST), failed from the start of its operation originally scheduled at 16:40, Saturday March 26 (JST). Up to now, JAXA has not been able to figure out the state of health of the satellite.

While the cause of communication anomaly is under investigation, JAXA received short signal from the satellite, and is working for recovery.

Under this circumstance, JAXA set up emergency headquarters, headed by the President, for recovery and investigation. The headquarters held its first meeting today, and has been working for recovery and the investigation of the cause. Updates will be announced as available, at the JAXA website.
Title: Re: LIVE: H-IIA - Hitomi (ASTRO-H) - February 17, 2016 (08:45 UTC)
Post by: russianhalo117 on 03/28/2016 09:08 pm
Update: Analysis shows ASTRO H breakup occurred 26Mar @ 0142z +/- 11mins.

WHERE did it occur lat/long? Anywhere in range of North Korea?
IDK but place this time on the orbit when JAXA reported a Comm Anomaly:
16:40, Saturday March 26 (JST)

The previous comm pass before that time was successful.
Title: Re: LIVE: H-IIA - Hitomi (ASTRO-H) - February 17, 2016 (08:45 UTC)
Post by: Thomas Dorman on 03/28/2016 09:38 pm
Does anyone know the SPC# for the Astro H Hitmoi  pieces of 5 debris. Just can't get them to come up. Help please.
Title: Re: LIVE: H-IIA - Hitomi (ASTRO-H) - February 17, 2016 (08:45 UTC)
Post by: LouScheffer on 03/28/2016 09:44 pm
Here is a  video and article (http://phenomena.nationalgeographic.com/2016/03/28/video-shows-troubled-japanese-spacecraft-tumbling-in-orbit/) that shows Hitomi tumbling.
Title: Re: LIVE: H-IIA - Hitomi (ASTRO-H) - February 17, 2016 (08:45 UTC)
Post by: Chris Bergin on 03/28/2016 10:05 pm
Can they recover a satellite's that's tumbling. I'm just not sure how this hasn't been declared a mission failure. Tumbling, Debris, etc.
Title: Re: LIVE: H-IIA - Hitomi (ASTRO-H) - February 17, 2016 (08:45 UTC)
Post by: russianhalo117 on 03/28/2016 10:23 pm
Can they recover a satellite's that's tumbling. I'm just not sure how this hasn't been declared a mission failure. Tumbling, Debris, etc.
From Official JAXA English Twitter is following:

JAXA Web ‏@JAXA_en  12h12 hours ago
JAXA Web Retweeted JSpOC
Correctly, JSpOC reported in the twitter that Hitomi separated into
multiple pieces BEFORE March 26 0820 (UT).
RT

and

JAXAウェブ ‏@JAXA_jp  16h16 hours ago
[ファン!ファン!JAXA!] X線天文衛星「ひとみ」(ASTRO-H)の状況について(3月28日版) http://dlvr.it/KvVkfW

and

translated via google: http://fanfun.jaxa.jp/topics/detail/7243.html?utm_source=dlvr.it&utm_medium=twitter
X-ray astronomy satellite "pupil" (ASTRO-H) status for the (March 28 edition)
2016 March 28 (Monday)

X-ray astronomy satellite "pupil" (ASTRO-H), the operation at the start of March 26 (Saturday) can not normally receive the radio waves from the satellite to the (afternoon around 4 pm 40 minutes), and then also of the satellite state I can not verify the situation has continued.
March 27 (Sunday) 6:00 pm 15 minutes, JAXA has issued a press release about this situation.
X-ray astronomy satellite "pupil" (ASTRO-H) communication error about the (March 27 (Sunday) 6:15 pm press release)
Even later, but we try to continuously communicate with the domestic and international ground station, can not receive the radio waves from the satellite up to the time of pm March 28, 11 am, not be able to check the status of the satellite situation we followed.
At the time of at March 28, 11 am, but the cause of the communication failure is unknown, we are working on a company-wide basis for the continued recovery and investigation of satellite communication.
In addition, the United States JSpOC (Department of Defense strategic military integration Space Operations Center: Joint Space Operations Center) from, the satellite will have been published information that there is a possibility that is divided into a plurality of objects, check the plurality of objects radio waves from it was able to receive from the and is is a satellite of what it is a short period of time after time, is being confirmed for a causal relationship between satellite communication abnormality in the mechanism.
If you can check back for the new information, we will inform you as soon as possible.
Title: Re: LIVE: H-IIA - Hitomi (ASTRO-H) - February 17, 2016 (08:45 UTC)
Post by: russianhalo117 on 03/28/2016 10:52 pm
Does anyone know the SPC# for the Astro H Hitmoi  pieces of 5 debris. Just can't get them to come up. Help please.
For starters: Astro H's JSpOC ID number is SCC# 41337
Title: Re: LIVE: H-IIA - Hitomi (ASTRO-H) - February 17, 2016 (08:45 UTC)
Post by: russianhalo117 on 03/28/2016 11:05 pm
Can they recover a satellite's that's tumbling. I'm just not sure how this hasn't been declared a mission failure. Tumbling, Debris, etc.
I dont know, but I quess if its possible the team could wait like the GEO Zombie Sat we had a few years ago until it has drifted enough that the spacecraft resets its self and regains control by its self. Then again the GEO Zombie Sat I'm thinking of wasn't spinning wildly through space.
Title: Re: LIVE: H-IIA - Hitomi (ASTRO-H) - February 17, 2016 (08:45 UTC)
Post by: alk3997 on 03/28/2016 11:14 pm
Can they recover a satellite's that's tumbling. I'm just not sure how this hasn't been declared a mission failure. Tumbling, Debris, etc.

Chris, yes but it will depend upon how much control authority they have as well as if whatever caused the tumbling is still acting and if they don't run out of power first because their solar arrays are not pointing at the Sun.  For 3-axis stabilized spacecraft, I can think of Solar Max, Salyut 7 (unmanned at the time), Soho and Gemini 8 as vehicles that were tumbling or spinning and were recovered.

Assuming Hitomi is still alive, the most likely method is for safe mode programming to kick in due to a timer and arrest the tumble automatically.  Not knowing if Hitomi has reaction wheels or reaction jets makes it more difficult to determine the odds.  If they are using prop to stop the spin then you have to hope they don't run out first and still have enough for a useful mission.  If it's reaction wheels, then, assuming no additional forces, you have to have enough electricity stored to run the reaction wheels enough to slow the tumble.  That requires the solar arrays to point towards the Sun or the batteries, assuming they didn't explode, to have enough power in reserve.

So there are still possibilities if the satellite is still alive and safe mode programming kicks in. 

Andy
Title: Re: LIVE: H-IIA - Hitomi (ASTRO-H) - February 17, 2016 (08:45 UTC)
Post by: Chris Bergin on 03/28/2016 11:45 pm
Good work guys. Taken William's spacecraft overview and summarized the status noted on this thread for an article:
https://www.nasaspaceflight.com/2016/03/concerns-astro-h-x-ray-astronomy/ - which we'll update when we know more. But it will also point people to this thread, which is clearly very useful information and context!

Heck, when I first saw the breakup tweet, I was all set to class the satellite as dead!
Title: Re: LIVE: H-IIA - Hitomi (ASTRO-H) - February 17, 2016 (08:45 UTC)
Post by: Sam Ho on 03/29/2016 12:15 am
The SOHO team published several detailed reports on the loss of control and subsequent recovery.

http://soho.nascom.nasa.gov/about/Recovery/

An uncontrolled tumble will eventually settle into a flat spin, which is likely to drain the batteries.  At that point, you can wait for the Earth's orbit around the Sun to put light on the solar panels, and then try to regain control.  That's more or less the SOHO recovery sequence.

In Hitomi's case, we don't have enough information yet to know whether the spacecraft has physical damage or what the debris is.  Tracking data should at least reveal the ballistic coefficient of the debris pretty soon.

If the satellite is lost, or even if the cryogen boils off before the satellite is recovered, it would be a blow to the X-ray spectroscopy community, given that the last two microcalorimeters were lost as well (ASTRO-E launch failure and Suzaku cryogen loss).
Title: Re: LIVE: H-IIA - Hitomi (ASTRO-H) - February 17, 2016 (08:45 UTC)
Post by: russianhalo117 on 03/29/2016 12:27 am
Good work guys. Taken William's spacecraft overview and summarized the status noted on this thread for an article:
https://www.nasaspaceflight.com/2016/03/concerns-astro-h-x-ray-astronomy/ - which we'll update when we know more. But it will also point people to this thread, which is clearly very useful information and context!

Heck, when I first saw the breakup tweet, I was all set to class the satellite as dead!
Can they recover a satellite's that's tumbling. I'm just not sure how this hasn't been declared a mission failure. Tumbling, Debris, etc.

Chris, yes but it will depend upon how much control authority they have as well as if whatever caused the tumbling is still acting and if they don't run out of power first because their solar arrays are not pointing at the Sun.  For 3-axis stabilized spacecraft, I can think of Solar Max, Salyut 7 (unmanned at the time), Soho and Gemini 8 as vehicles that were tumbling or spinning and were recovered.

Assuming Hitomi is still alive, the most likely method is for safe mode programming to kick in due to a timer and arrest the tumble automatically.  Not knowing if Hitomi has reaction wheels or reaction jets makes it more difficult to determine the odds.  If they are using prop to stop the spin then you have to hope they don't run out first and still have enough for a useful mission.  If it's reaction wheels, then, assuming no additional forces, you have to have enough electricity stored to run the reaction wheels enough to slow the tumble.  That requires the solar arrays to point towards the Sun or the batteries, assuming they didn't explode, to have enough power in reserve.

So there are still possibilities if the satellite is still alive and safe mode programming kicks in. 

Andy
Here are the spacecraft Schematics and Specs as publish by ESA

https://directory.eoportal.org/web/eoportal/satellite-missions/a/astro-h
Quote
The lightweight design of the EOB renders it vulnerable to distortions from thermal fluctuations in LEO (Low Earth Orbit) and spacecraft attitude maneuvers. Over the long exposures associated with X-ray observing, such fluctuations might impair HXI image quality unless a compensation technique is employed. To provide the required corrections, the Canadian contribution to the the ASTRO-H project is a laser metrology system CAMS (Canadian ASTRO-H Metrology System) that will measure displacement in the alignment of the HXT optical path. The CAMS consist of a laser and detector module (CAMS-LD) located on the top plate of the FOB, and a passive target module (CAMS-T) consisting of a retroreflector (corner cube mirror) mounted on the EOB detector plate (HXI plate).

The spacecraft attitude is stabilized by four sets of reaction wheels with one redundancy, while the attitude is measured by two star trackers and its change rate by two gyroscopes. There are two more gyroscopes mounted in skew directions, which provide redundancy. The accumulated angular momentum is unloaded by magnetic torquers that interact with the Earth's magnetic field. The required accuracy of the spacecraft attitude solution is approximately 0.33 arcmin with a stability of better than 0.12 arcmin per 4s (a nominal exposure time for the CCDs). The pointing direction of the telescope is limited by the power constraint of the solar panels. The area of the sky accessible at any time is a belt within which the Sun angle is between 60º and 120º. Any part of the sky is accessible at least twice a year. It is expected to take ~72 minutes for a 180º maneuver.

--------------

From another site: http://spaceflight101.com/h-iia-astro-h/astro-h/
ACS and other propulsion systems can bee seen in graphic 7 of thew article. I will now delve through ISAS documents to find the document the graphic came from

Quote
Attitude control and actuation is accomplished by a suite of attitude sensors and a combination of thrusters, reaction wheels and magnetic torquers.
Quote
Attitude actuation is provided by a propulsive attitude control system featuring a series of 3-Newton Hydrazine monopropellant thrusters as well as a Reaction Wheel Assembly and magnetic torquers that are used in spacecraft safe mode and during RWA momentum dumps. For the operation of the telescope payloads, Astro-H has to be capable of holding a very stable attitude over the course of the instrument integration times.

Four reaction wheels, controlled from redundant Attitude Control Interface Modules are the primary actuators used by the spacecraft for pointing and attitude control. With four wheels, one could fail without impacting the controlability of the spacecraft.

Three magnetic torque rods, controlled by two redundant interface systems can be used for attitude control in spacecraft safe mode and to support regular momentum dumps from the reaction wheels that need to be de-spun periodically.

The propulsion system of the Astro-H spacecraft consists of eight three-Newton thrusters that can be used for orbit maintenance and adjustments as well as attitude control. The system consists of two banks of four thrusters, each bank isolated by its own latch valve.

The attitude determination and control system has two fully cross-strapped controllers that process the data delivered by the sensors and actuate the wheels, torquers and thrusters based on the current attitude profile.
Title: Re: LIVE: H-IIA - Hitomi (ASTRO-H) - February 17, 2016 (08:45 UTC)
Post by: Ilikeboosterrockets on 03/29/2016 01:16 am
How hard is it for ground radar to determine the size of the debris that came off? Are we maybe not hearing about this because it could reveal the capabilities of the tracking radar?
Title: Re: LIVE: H-IIA - Hitomi (ASTRO-H) - February 17, 2016 (08:45 UTC)
Post by: Targeteer on 03/29/2016 02:08 am
http://phenomena.nationalgeographic.com/2016/03/28/video-shows-troubled-japanese-spacecraft-tumbling-in-orbit/
Title: Re: LIVE: H-IIA - Hitomi (ASTRO-H) - February 17, 2016 (08:45 UTC)
Post by: Sam Ho on 03/29/2016 02:16 am
How hard is it for ground radar to determine the size of the debris that came off? Are we maybe not hearing about this because it could reveal the capabilities of the tracking radar?
Ground radar will show the radar cross section of the objects. With some educated guesses on the shape and composition, you can get an idea of the size.

There's no reason to hide the capabilities of the radar. Objects over 10cm are considered trackable.

Quote
@JointSpaceOps would only say you'd broken up if the dandruff flakes were bigger than 10cm each.
Title: Re: LIVE: H-IIA - Hitomi (ASTRO-H) - February 17, 2016 (08:45 UTC)
Post by: jcm on 03/29/2016 05:30 am
The 5 debris objects have not yet been cataloged by JSPOC. They are presumably in the 80000 series 'analyst object'
element sets that aren't released to the public because they haven't finished sorting them out definitively

My guess is that the debris objects are small - maybe only 10 cm - and may have just been insulation that
came loose and reentered too quickly to get definitive orbits for.

Maley's video shows the satellite is tumbling quickly. Andy/alk3997 described well the challenges of recovering
attitude control even if they regain contact. It's even possible that in the hours following the event all the thruster
gas was used up trying to recover from the tumble. The reaction wheels may be able to save the day, but
it is a race against time before batteries deplete unless they're really lucky with the average orientation of the solar panels relative to the Sun.

I believe that as of Saturday night the sat was still alive but tumbling... whatever event caused it (maybe internal cryo overpressure, or stuck thruster, or less likely some orbital debris hit). Whether it still has power is another question. We're all in shock in the world X-ray astronomy community today. I really hope JAXA get lucky and pull this off - but each passing day
it's a longer shot.

Title: Re: LIVE: H-IIA - Hitomi (ASTRO-H) - February 17, 2016 (08:45 UTC)
Post by: Thomas Dorman on 03/29/2016 07:26 am
Was able to get a pass video of the Astro H Hitomi satellite. Astro H is clearly in a multi-axis tumble. We got about three degrees of the pass for this satellite. Was fighting  wind which caused a little vibration in the video.
In addition trying to stabilize Paul Maley's video which so far had not a lot of luck with. The shake, rattle, roll is bad. Maybe try to take it apart and take out the worst parts. Our regards to Paul in letting us have a copy to play with.
We do have more passes in the coming days but looks like tomorrow will be a no go because of high winds.
Would like to get a longer track. To be real honest the satellite looks like it is in the tumble of death sure hope we are wrong and do wish for a speedy recovery of the satellite.
Here is a link to our  video.
https://vimeo.com/160704101
Regards
Title: Re: LIVE: H-IIA - Hitomi (ASTRO-H) - February 17, 2016 (08:45 UTC)
Post by: as58 on 03/29/2016 09:11 am
Calling Hitomi the best science experiment of the decade is quite a stretch, but it is probably true if we only consider x-ray astrophysics missions launched in that period. Unfortunately it looks like it'll take a miracle to rescue the mission. Even if they get Hitomi under control, it may not be able to do science (for example, it may have lost cryo).

Frankly, JAXA's track record on science missions is not very good. Hitomi's predecessor Suzaku lost one instrument very soon after launch (and its predecessor was lost in a launch failure),  Nozomi was lost, Akatsuki and Hayabusa had problems (though both were/will be able to do at least part of their missions), and Akari had problems which reduced the mission lifetime (though I think it still met or at least came close to meeting the original goal).
Title: Re: LIVE: H-IIA - Hitomi (ASTRO-H) - February 17, 2016 (08:45 UTC)
Post by: Chris Bergin on 03/29/2016 01:08 pm
JAXA:

Mar. 29, 2016 Updated
Current Status of Communication Anomaly of X-ray Astronomy Satellite “Hitomi” (ASTRO-H) (Mar. 29)
The Japan Aerospace Exploration Agency (JAXA) has been trying to communicate with the X-ray Astronomy Satellite “Hitomi” (ASTRO-H), using ground stations both in Japan and overseas.
By utilizing two opportunities of communicating with Hitomi, JAXA received signals from the satellite: the first time was at about 10:00 p.m. on 28 at the Uchinoura Ground Station, and the second one was at around 0:30 a.m. on 29 at the Santiago Tracking Station in Chile. JAXA has not been able to figure out the state of its health, as the time frames for receiving the signals were very short.

According to the U.S. Joint Space Operations Center (JSpOC), it is estimated that Hitomi separated to five pieces at about 10:42 a.m. In order to investigate the situation, JAXA is observing the objects, using a radar located at the Kamisaibara Space Guard Center (KSGC) and telescopes at the Bisei Space Guard Center (BSGC) owned by the Japan Space Forum. Up to now, the telescopes at BSGC detected two objects around the satellite’s original orbit, while the radar at KSGC identified one of them. It is confirmed that the signal received at the Santiago Tracking Station came from the orbital direction of the object identified at KSGC.
JAXA continues to investigate the relationship between the information announced by JSpOC and the communication anomaly.

JAXA will continue to do its best to recover communications with Hitomi and investigate the cause of the anomaly.
Title: Re: LIVE: H-IIA - Hitomi (ASTRO-H) - February 17, 2016 (08:45 UTC)
Post by: cyth on 03/29/2016 06:49 pm
Calling Hitomi the best science experiment of the decade is quite a stretch, but it is probably true if we only consider x-ray astrophysics missions launched in that period. Unfortunately it looks like it'll take a miracle to rescue the mission. Even if they get Hitomi under control, it may not be able to do science (for example, it may have lost cryo).

hitomi was gonna see what have not been seen before. In this aspect it was possible that hitomi was going to reveal something new.  Who knows maybe it would explain black holes or nebulas?
Title: Re: LIVE: H-IIA - Hitomi (ASTRO-H) - February 17, 2016 (08:45 UTC)
Post by: Thomas Dorman on 03/29/2016 10:16 pm
 We have been analyzing our negative view video of the pass of Astro H we recorded last night. We sent it to a friend to have a look because of something we keep seeing. We zoom in on the track. we believe that we see an object flying along with Astro H between the 6 to 8 O'clock position. Sadly it is something that is right at the point of resolution of our system. The reason we sent it to a friend is he has a little better software and equipment. He sees the same thing. Also our better half can see it when we go slow frame by frame at best it shows up between two to three tens of a second or every two to three frames at best. Best guess the object is around the + 9 magnitude at brightest and is also tumbling. Was hoping for a break in the weather but it is looking like we are clouded in and it will not left before midnight. We are changing from a zoom lens to a telescope on the next chance at imaging the Astro H.
Regards
Title: Re: LIVE: H-IIA - Hitomi (ASTRO-H) - February 17, 2016 (08:45 UTC)
Post by: Sam Ho on 03/29/2016 10:26 pm
SpaceNews quotes USAF as saying Hitomi was not hit by orbital debris:

http://spacenews.com/air-force-malfunctioning-japanese-satellite-was-not-hit-by-debris/

Jeff Foust also quotes Masaki Fujimoto, JAXA: (this is extracted from a series of tweets, so I'm not sure if they are verbatim quotes)
Quote
During initial operation, Hitomi working perfectly, up until we lost communications a few days ago.  We have only heard beacon signals from Hitomi in recent days. Hard to assume it’s broken up.  Spacecraft suffered a loss of attitude control, leading to power and comms problems. Working on recovery, but will take months.

At this time, no plans to change long-term JAXA space science plans while working to recover Hitomi. We have ceiling in missions we can lead based on budget, rockets; Hitomi, despite its problems, a model for future cooperation.
Title: Re: LIVE: H-IIA - Hitomi (ASTRO-H) - February 17, 2016 (08:45 UTC)
Post by: Sam Ho on 03/30/2016 08:01 pm
Jeff Foust writes an article based on the information he tweeted out earlier.

http://spacenews.com/jaxa-believes-still-possible-to-recover-hitomi/
Title: Re: LIVE: H-IIA - Hitomi (ASTRO-H) - February 17, 2016 (08:45 UTC)
Post by: iamlucky13 on 03/31/2016 08:18 pm
SpaceNews quotes USAF as saying Hitomi was not hit by orbital debris:

http://spacenews.com/air-force-malfunctioning-japanese-satellite-was-not-hit-by-debris/

The article says the USAF have found no evidence that it was hit by orbital debris. Unless they clarify further, I don't read that as necessarily saying they have evidence it was not orbital debris.

I would imagine they have very little evidence to examine for possible links to the incident aside from their tracking catalogue, which as we all know, is limited in the size objects it can detect.

I suppose it might be possible, however, that there is no overlap between the set of objects too small too track and the set of objects with enough energy to impart the step change observed in Hitomi's perigee. That would be pretty compelling evidence, I would think.
Title: Re: LIVE: H-IIA - Hitomi (ASTRO-H) - February 17, 2016 (08:45 UTC)
Post by: as58 on 03/31/2016 10:07 pm
Apparently Hitomi has/had about 5 kg of liquid helium for its SXS instrument. It looks like even venting all of that wouldn't be enough to give delta-v of ~4 m/s (see this discussion: https://twitter.com/planet4589/status/714581317640433664). I guess that means that the hydrazine propellant must have vented somehow?
Title: Re: LIVE: H-IIA - Hitomi (ASTRO-H) - February 17, 2016 (08:45 UTC)
Post by: jcm on 03/31/2016 10:25 pm
Apparently Hitomi has/had about 5 kg of liquid helium for its SXS instrument. It looks like even venting all of that wouldn't be enough to give delta-v of ~4 m/s (see this discussion: https://twitter.com/planet4589/status/714581317640433664). I guess that means that the hydrazine propellant must have vented somehow?

I'm leaning towards a stuck thruster.
Title: Re: LIVE: H-IIA - Hitomi (ASTRO-H) - February 17, 2016 (08:45 UTC)
Post by: as58 on 03/31/2016 10:58 pm
Apparently Hitomi has/had about 5 kg of liquid helium for its SXS instrument. It looks like even venting all of that wouldn't be enough to give delta-v of ~4 m/s (see this discussion: https://twitter.com/planet4589/status/714581317640433664). I guess that means that the hydrazine propellant must have vented somehow?

I'm leaning towards a stuck thruster.

But would "only" a stuck thruster cause (small?) pieces to come off? Or is the spin rate so high that the structure can't take it? I think they've already extended the optics...
Title: Re: LIVE: H-IIA - Hitomi (ASTRO-H) - February 17, 2016 (08:45 UTC)
Post by: meekGee on 04/01/2016 01:39 am
Apparently Hitomi has/had about 5 kg of liquid helium for its SXS instrument. It looks like even venting all of that wouldn't be enough to give delta-v of ~4 m/s (see this discussion: https://twitter.com/planet4589/status/714581317640433664). I guess that means that the hydrazine propellant must have vented somehow?

I'm leaning towards a stuck thruster.

But would "only" a stuck thruster cause (small?) pieces to come off? Or is the spin rate so high that the structure can't take it? I think they've already extended the optics...

Also, with a stuck thruster, wouldn't they know what happened?  I was under the impression they lost contact and are pretty much in the dark.

I really hope they beat the odds here.
Title: Re: LIVE: H-IIA - Hitomi (ASTRO-H) - February 17, 2016 (08:45 UTC)
Post by: Ohsin on 04/01/2016 03:49 pm
Quote
10 pieces from Astro-H break-up is posted on @SpaceTrackOrg. 41337 was amended to match the largest piece. The former 41337 is now 41442.

https://twitter.com/JointSpaceOps/status/715925669494923266

Previous number was 5.
Title: Re: LIVE: H-IIA - Hitomi (ASTRO-H) - February 17, 2016 (08:45 UTC)
Post by: gwiz on 04/01/2016 04:23 pm
This implies a much smaller velocity change at the time of the explosion.
Title: Re: LIVE: H-IIA - Hitomi (ASTRO-H) - February 17, 2016 (08:45 UTC)
Post by: as58 on 04/01/2016 05:10 pm
As Jonathan McDowell points out on Twitter, the fact that it wasn't clear for a few days which one of the pieces is the main object means that it's not only small parts that have broken off. This, and the fact that the delta-v of the main object is much smaller than initially thought seems to point (IMO) towards some kind of explosion rather than a stuck thruster. Not good news, in fact it's amazing that the satellite isn't completely dead.
Title: Re: LIVE: H-IIA - Hitomi (ASTRO-H) - February 17, 2016 (08:45 UTC)
Post by: leetdan on 04/01/2016 08:28 pm
Sourced from http://www.satobs.org/seesat/Apr-2016/0009.html, it seems the breakup may have occurred in view of Eglin AFB's Space Surveillance assets.
Title: Re: LIVE: H-IIA - Hitomi (ASTRO-H) - February 17, 2016 (08:45 UTC)
Post by: jcm on 04/02/2016 04:16 am
Paul Maley just observed objects A and L. L remains flashing as before. A showed 7 flashes in 9 seconds, so even worse.
In his email to me he didn't comment on the relative brightness of A and L.
Title: Re: LIVE: H-IIA - Hitomi (ASTRO-H) - February 17, 2016 (08:45 UTC)
Post by: as58 on 04/02/2016 06:34 am
Paul Maley just observed objects A and L. L remains flashing as before. A showed 7 flashes in 9 seconds, so even worse.
In his email to me he didn't comment on the relative brightness of A and L.

If A is indeed the main body of the satellite, that kind of spin rate could definitely be too much for the structure.
Title: Re: LIVE: H-IIA - Hitomi (ASTRO-H) - February 17, 2016 (08:45 UTC)
Post by: Thomas Dorman on 04/03/2016 08:21 pm
 Here is our  down and dirty video Astro H Debris K 41441. Still working on a magnitude estimation but best guess at this time it is at the +8 magnitude at best. Believe this is the first public images of this K fragment of Astro H.

https://vimeo.com/161390859

Still working on this one and other fragments from passes from last night.

Regards
Title: Re: LIVE: H-IIA - Hitomi (ASTRO-H) - February 17, 2016 (08:45 UTC)
Post by: Wolfram66 on 04/03/2016 09:22 pm
My WAG is a battery failure & explosion. Object A is Solar Array and object L is main body of spacecraft.
Title: Re: LIVE: H-IIA - Hitomi (ASTRO-H) - February 17, 2016 (08:45 UTC)
Post by: Thomas Dorman on 04/04/2016 12:37 am
Wolfram66
The solar panels are two panels  independently mounted from each other. So if A is a solar panel where is the other panel? If the other panels is still attached to the main spacecraft bus then shouldn't L be brighter then A? Since I we now have imaged all the bight debris seems  A is the main spacecraft bus in our opinion from the peanut gallery.
We are starting to believe k is part of the deployable boom bench.
We have been analyzing K and "seems" there maybe at least one close object with in three to four minutes of the K debris and what looks to us like a very defused cloud traveling with it around forty to fifty minute away.These objects are right at the limit of are camera system but right now we are still working on the video of K and this may take some time to see if we can fish more details out from the noise. If any one has access to more advanced video imaging software feel free to download our last video and see if you can bring out more data from the video of debris K. The objects we speak of are in the 2 to 4 O,clock position.
Regards
Title: Re: LIVE: H-IIA - Hitomi (ASTRO-H) - February 17, 2016 (08:45 UTC)
Post by: kevin-rf on 04/04/2016 01:17 am
My WAG is a battery failure & explosion. Object A is Solar Array and object L is main body of spacecraft.
Then how do you explain the signals received on March 28th?
Title: Re: LIVE: H-IIA - Hitomi (ASTRO-H) - February 17, 2016 (08:45 UTC)
Post by: russianhalo117 on 04/04/2016 07:59 pm
Sourced from http://www.satobs.org/seesat/Apr-2016/0009.html, it seems the breakup may have occurred in view of Eglin AFB's Space Surveillance assets.
The initial Breakup Event's direct Observation has since been confirmed by Base Officials at Eglin AFB in an updated email from satobs regarding incident: http://www.satobs.org/seesat/Apr-2016/0009.html. Eglin AFB has handed over the requested data to JAXA after recieving the necessary approvals. The data consists of the entire viewing pass and the previous pass. Other Space Surveillance assets at other locations are also being reviewed to see if the event started in the previous tracking area before reaching Eglin's assets.
Title: Re: LIVE: H-IIA - Hitomi (ASTRO-H) - February 17, 2016 (08:45 UTC)
Post by: Star One on 04/04/2016 10:13 pm
Damaged Japanese Spacecraft likely 'Beyond Saving'

http://phenomena.nationalgeographic.com/2016/04/04/in-pieces-japans-hitomi-spacecraft-is-likely-beyond-saving/
Title: Re: LIVE: H-IIA - Hitomi (ASTRO-H) - February 17, 2016 (08:45 UTC)
Post by: jcm on 04/08/2016 06:29 am
New JAXA press conference about to start. Hoping our Nipponophone friends will tell us what they say...
Title: Re: LIVE: H-IIA - Hitomi (ASTRO-H) - February 17, 2016 (08:45 UTC)
Post by: jcm on 04/08/2016 07:56 am
JAXA summary in Japanese at   http://fanfun.jaxa.jp/jaxatv/files/20160408_hitomi.pdf

Based on tweets by @namelessnanashi interpreting the press conference:
 - no new contact since Mar 29.  Think the solar panels are not getting enough light to power the comms equipment
 - possible either the EOB (truss with the HXI cameras) or parts of the solar array broken off
 - still don't know why it spun up
 - observations from Subaru show object A is of order 10 m in size, consistent wth main spacecraft
 - still hoping that internal dissipation will reduce rotation rate, allow more sun on solar panels,
   and allow JAXA to resume contact.
Hitomi has 6 panels, can lose 3 and still observe.
They didn't see any thruster fire near the time of the trouble
They don't think the reacion wheels were at fault.
Observed rotation period 5.2 seconds.
3 s period could be harmful to Hitomi but they don't think it ever got that fast.
Largest fragment other than main body about 1 m in size




Title: Re: LIVE: H-IIA - Hitomi (ASTRO-H) - February 17, 2016 (08:45 UTC)
Post by: Thomas Dorman on 04/08/2016 06:35 pm
We recorded a pass of Astro H A SPC# 41337 on April 2,2016. There seems to be a problem about what is being claimed about the rotation or tumble rate of the Astro H A SPC #41337. The people on satobs posted tumble rates of more than a 11 seconds, last post here 5.2 seconds. Just to throw some gasoline on the fire. Here is a 3D plot from our video covering 8.3 seconds. You can down load this video and do the flash rates yourself some where some one is way off on tumble rates. You be the judge. Also with minor peaks are we seeing a tumble of the spacecraft in more the one axis?
Video frames were averaged for synotic and scintillation effects.
Here is the link.

https://vimeo.com/162108453

Regards
Title: Re: LIVE: H-IIA - Hitomi (ASTRO-H) - February 17, 2016 (08:45 UTC)
Post by: Galactic Penguin SST on 04/15/2016 12:45 pm
JAXA has made another press conference today. My Japanese is non-exist, but from what I read it seems that they have developed a theory as to the lost of satellite's attitude control, and the chain of events started with reaction wheels saturation which caused the ACS to fire wrongly. Someone here might be able to translate the attached document and the press conference....  :P

https://www.youtube.com/watch?v=BgLS00PseAA
Title: Re: LIVE: H-IIA - Hitomi (ASTRO-H) - February 17, 2016 (08:45 UTC)
Post by: Chris Bergin on 04/15/2016 12:47 pm
I'd be very interested in a translation...especially on what the status is per the potential to save the spacecraft?
Title: Re: LIVE: H-IIA - Hitomi (ASTRO-H) - February 17, 2016 (08:45 UTC)
Post by: eeergo on 04/15/2016 01:27 pm
Translating the pdf with Google and trying to interpret it, here are my conclusions (please have some Japanese speaker check and build upon them please :) ):

- AGN observation was normal on March 26th and finished at 0322 JST.

- Hitomi's Inertial Measurement Unit (IRU) observed a non-existent anomalous rotation (21.7º/h roll around Z), and tried to counteract it with its reaction wheels, leading to an anomalous real rotation on the other direction. There is a temporary, expected increase in error in the IRU rate determination caused by time integration that is, by design, expected to be superseded by star tracker data, and decreases over time. It is noted that, in this occasion, the star trackers data was NOT used to check this, thus forcing Hitomi to rely solely on the IRU data with large errors. Furthermore, the large error determination value was anomalously kept constant instead of allowing it to converge to a low value. This event happened around 0410 JST, outside of ground station visibility, and reaches a slow 20º/h real rotation in the other direction.

- Magnetic torquers tried to dump momentum (thus reducing the wheels angular velocity) but this didn't work, since the attitude and rates were not the expected ones, so wheels accumulated an anomalous momentum, nearly saturating them (112 N·m·s vs 120 N·m·s limit). This situation continues from 0549 to 1004 JST.

- Safe mode kicks in because of the large IRU errors in rates and the wheels saturating at 120 N·m·s, therefore operating the thrusters to stabilize the situation by finding the Sun, but this was not handled well because of incorrect thruster settings which actually increased the anomalous rotation. A note specifies that, after the deployment of the Optical Bench on February 28th, there was a problem in the acquisition of the Sun by the Sun Sensors, because of the changed satellite geometry.

- Detachment of pieces at 1037 JST, which are expected to be either a portion of the solar panels or the extendable optical bench, or both.

- No communications (presumably because of battery drainage) have been possible since March 28th. Rotation has increased since the event.

- Re-entry predictions for two objects: 41443: April 29, 2016 and 41438: May 10, 2016.


So, I gather that there might have been 3 errors:


1) Star tracker failure to lock or transmit data to the ACS, thus relying only on IRU (high error) data during the attitude change.
2) IRU stall at a large rate determination error, that kept it constant at an abnormally high value, instead of having it refreshed (since the error caused by the time integration during the attitude change would exponentially shed away).
3) Wrong thrusters settings (which may have been improperly set by human error -in investigation- after the Extendable Optical Bench deployment) impedes the Sun Sensor to acquire the Sun angle and thus counteract the rotation with the RCS. Instead, it accelerates the roll.
Title: Re: LIVE: H-IIA - Hitomi (ASTRO-H) - February 17, 2016 (08:45 UTC)
Post by: ugordan on 04/15/2016 01:34 pm
That sounds like multiple failures in a row. How extensively was the s/c tested on the ground?
Title: Re: LIVE: H-IIA - Hitomi (ASTRO-H) - February 17, 2016 (08:45 UTC)
Post by: zeke01 on 04/15/2016 05:00 pm
Cannot find this information on JAXA website, so from NHK:

Quote
JAXA: Harmful rotation damaged satellite

Japan's space agency says its troubled astronomy satellite may have damaged itself by spinning when it should not have. This was caused by a malfunction in the posture control system.

The Japan Aerospace Exploration Agency, or JAXA, launched the satellite, Hitomi, into Earth orbit in February. It was expected to become a new tool for scientists to observe the far-reaching universe through X-rays.

But in late March it stopped sending signals to ground control, and telescope images found the probe spinning, with some parts apparently breaking off.

JAXA analyzed data obtained before communications were lost. It found a glitch in the satellite's posture control system.

JAXA engineers say the satellite's system mis-analyzed the situation and thought that it was spinning when in fact it was almost completely stopped. Thus the satellite applied force to stop the supposed spinning, as programed.

The engineers say that that force caused harmful rotation of the satellite.

They say other errors in the preset data in the posture control system added to the problem, leading to a faster rotation of the satellite and breakup of the solar panels as well as other equipment.

http://www3.nhk.or.jp/nhkworld/en/news/20160415_45/
Title: LIVE: H-IIA - Hitomi (ASTRO-H) - February 17, 2016 (08:45 UTC)
Post by: Star One on 04/19/2016 04:30 pm
Sounds like there is plenty of blame to go round on the failure of this mission.

Quote
Japan’s Hitomi X-ray observatory was beset by a series of attitude control problems March 26 that caused the satellite to spin out of control and shed sizable chunks of its power-generating solar panels or deployable telescope, according to engineers analyzing fragments of telemetry data sent to Earth by the dying spacecraft.

Hitomi, also known as Astro-H, first showed signs of trouble March 26, and mission control last heard from the satellite March 28, less than six weeks after its Feb. 17 blastoff on a planned three-year mission.

The problem started when the satellite’s inertial reference unit detected Hitomi was rotating around its Z-axis at 21.7 degrees per hour. The spacecraft was actually stable at the time, mission managers from the Japan Aerospace Exploration Agency said Friday.

The satellite’s attitude control system commanded Hitomi’s reaction wheels, rapidly-spinning devices which control the pointing of the spacecraft with momentum, to counteract the spin. The action caused the satellite to rotate in the opposite direction as the faulty inertial reference unit indicated, officials said.

Momentum accumulated inside the reaction wheel system, and magnetic torquers aboard the satellite were unable to unload the building momentum, which neared the reaction wheels’ design limit.

Hitomi’s computers recognized the dangerous situation and put the satellite into safe hold a few hours later. The satellite tried to stabilize using the craft’s hydrazine-fueled rocket thrusters to aim its solar panels toward the sun.

But the trouble was not over, and the spacecraft’s solar sensor was unable to find the sun. Struggling to correct the growing spin rate, small rocket firings inadvertently caused Hitomi to rotate faster due to a bad setting in the thruster system, JAXA officials said.

Ground controllers updated Hitomi’s thruster control parameters Feb. 28 to adjust for the spacecraft’s new mass properties after deployment of the observatory’s extendable optical bench, a 6-meter (20-foot) structure that holds imagers to detect high-energy X-rays emitted by super-heated matter being sucked into black holes.

The new control parameters uplinked to Hitomi Feb. 28 were inadequate and did not properly account for the deployed telescope structure, JAXA said.

http://spaceflightnow.com/2016/04/18/spinning-japanese-astronomy-satellite-may-be-beyond-saving/
Title: Re: LIVE: H-IIA - Hitomi (ASTRO-H) - February 17, 2016 (08:45 UTC)
Post by: MattMason on 04/19/2016 05:15 pm
Sounds like there is plenty of blame to go round on the failure of this mission.

Quote
Japan’s Hitomi X-ray observatory was beset by a series of attitude control problems March 26 that caused the satellite to spin out of control and shed sizable chunks of its power-generating solar panels or deployable telescope, according to engineers analyzing fragments of telemetry data sent to Earth by the dying spacecraft.

Hitomi, also known as Astro-H, first showed signs of trouble March 26, and mission control last heard from the satellite March 28, less than six weeks after its Feb. 17 blastoff on a planned three-year mission.

The problem started when the satellite’s inertial reference unit detected Hitomi was rotating around its Z-axis at 21.7 degrees per hour. The spacecraft was actually stable at the time, mission managers from the Japan Aerospace Exploration Agency said Friday.

The satellite’s attitude control system commanded Hitomi’s reaction wheels, rapidly-spinning devices which control the pointing of the spacecraft with momentum, to counteract the spin. The action caused the satellite to rotate in the opposite direction as the faulty inertial reference unit indicated, officials said.

Momentum accumulated inside the reaction wheel system, and magnetic torquers aboard the satellite were unable to unload the building momentum, which neared the reaction wheels’ design limit.

Hitomi’s computers recognized the dangerous situation and put the satellite into safe hold a few hours later. The satellite tried to stabilize using the craft’s hydrazine-fueled rocket thrusters to aim its solar panels toward the sun.

But the trouble was not over, and the spacecraft’s solar sensor was unable to find the sun. Struggling to correct the growing spin rate, small rocket firings inadvertently caused Hitomi to rotate faster due to a bad setting in the thruster system, JAXA officials said.

Ground controllers updated Hitomi’s thruster control parameters Feb. 28 to adjust for the spacecraft’s new mass properties after deployment of the observatory’s extendable optical bench, a 6-meter (20-foot) structure that holds imagers to detect high-energy X-rays emitted by super-heated matter being sucked into black holes.

The new control parameters uplinked to Hitomi Feb. 28 were inadequate and did not properly account for the deployed telescope structure, JAXA said.

http://spaceflightnow.com/2016/04/18/spinning-japanese-astronomy-satellite-may-be-beyond-saving/

So, no fault of the launch vehicle's final stages, then. The spacecraft that thought it was a ballerina, and spun itself to death. If there were a "sad" button, I'd press it. It's almost as if the Japanese share satellite karma with the Russians.
Title: Re: LIVE: H-IIA - Hitomi (ASTRO-H) - February 17, 2016 (08:45 UTC)
Post by: Targeteer on 04/21/2016 02:13 am
From the JAXA Facebook page

Presumed Mechanism 1:From “Normal Status” to “Attitude Anomaly”

ASTRO-H controls its own attitude using 2 instruments, Inertial Reference Unit (IRU) and Star Tracker (STT), at normal time.

After the attitude maneuver operation was completed, ASTRO-H started using STT output data. At that time IRU bias rate estimation* becomes larger than actual one. After that by the correction using STT data, the value converges within normal one.

There is a possibility that after the end of the attitude maneuver operation on March 26, STT output data had not been uploaded to ASTRO-H for some reason, IRU bias rate estimation remains larger and continued showing anomalous value.

In this case ACS of ASTRO-H did not use STT output data, and determined the attitude only using IRU. So it is estimated that the attitude was controlled based on the false determination value of attitude.

ACS of ASTRO-H is designed so that the attitude will controlled only by IRU without loaded STT output data, if the difference between IRU estimated attitude and STT estimated value is larger than 1[deg].

From the fact that IRU bias rate estimation mainly around Z axis continuously showed 21.7[deg/h], it is estimated that attitude control system controlled the attitude to counteract the estimated value with the rotate motion about 21.7[deg/h] around Z axis, then ASTRO-H started rotating.

By the further analysis of the telemetry received at MSP and MGN, JAXA confirmed that ASTRO-H was rotating around Z axis about 20 [deg/h]
Title: Re: LIVE: H-IIA - Hitomi (ASTRO-H) - February 17, 2016 (08:45 UTC)
Post by: russianhalo117 on 04/21/2016 05:04 am
From the JAXA Facebook page

Presumed Mechanism 1:From “Normal Status” to “Attitude Anomaly”

ASTRO-H controls its own attitude using 2 instruments, Inertial Reference Unit (IRU) and Star Tracker (STT), at normal time.

After the attitude maneuver operation was completed, ASTRO-H started using STT output data. At that time IRU bias rate estimation* becomes larger than actual one. After that by the correction using STT data, the value converges within normal one.

There is a possibility that after the end of the attitude maneuver operation on March 26, STT output data had not been uploaded to ASTRO-H for some reason, IRU bias rate estimation remains larger and continued showing anomalous value.

In this case ACS of ASTRO-H did not use STT output data, and determined the attitude only using IRU. So it is estimated that the attitude was controlled based on the false determination value of attitude.

ACS of ASTRO-H is designed so that the attitude will controlled only by IRU without loaded STT output data, if the difference between IRU estimated attitude and STT estimated value is larger than 1[deg].

From the fact that IRU bias rate estimation mainly around Z axis continuously showed 21.7[deg/h], it is estimated that attitude control system controlled the attitude to counteract the estimated value with the rotate motion about 21.7[deg/h] around Z axis, then ASTRO-H started rotating.

By the further analysis of the telemetry received at MSP and MGN, JAXA confirmed that ASTRO-H was rotating around Z axis about 20 [deg/h]
There is a confirmation via ESA's EO portal that Astro-H did not have redundant command and control computers for both the A and B side of the spacecraft and had only a single active IRU on the A side of the spacecraft. B-Side electronics were still in engineering mode at the time of the incident so the A-Side could not interact with B-Side Hardware and Software.
Title: Re: LIVE: H-IIA - Hitomi (ASTRO-H) - February 17, 2016 (08:45 UTC)
Post by: Star One on 04/21/2016 08:22 am
From the JAXA Facebook page

Presumed Mechanism 1:From “Normal Status” to “Attitude Anomaly”

ASTRO-H controls its own attitude using 2 instruments, Inertial Reference Unit (IRU) and Star Tracker (STT), at normal time.

After the attitude maneuver operation was completed, ASTRO-H started using STT output data. At that time IRU bias rate estimation* becomes larger than actual one. After that by the correction using STT data, the value converges within normal one.

There is a possibility that after the end of the attitude maneuver operation on March 26, STT output data had not been uploaded to ASTRO-H for some reason, IRU bias rate estimation remains larger and continued showing anomalous value.

In this case ACS of ASTRO-H did not use STT output data, and determined the attitude only using IRU. So it is estimated that the attitude was controlled based on the false determination value of attitude.

ACS of ASTRO-H is designed so that the attitude will controlled only by IRU without loaded STT output data, if the difference between IRU estimated attitude and STT estimated value is larger than 1[deg].

From the fact that IRU bias rate estimation mainly around Z axis continuously showed 21.7[deg/h], it is estimated that attitude control system controlled the attitude to counteract the estimated value with the rotate motion about 21.7[deg/h] around Z axis, then ASTRO-H started rotating.

By the further analysis of the telemetry received at MSP and MGN, JAXA confirmed that ASTRO-H was rotating around Z axis about 20 [deg/h]
There is a confirmation via ESA's EO portal that Astro-H did not have redundant command and control computers for both the A and B side of the spacecraft and had only a single active IRU on the A side of the spacecraft. B-Side electronics were still in engineering mode at the time of the incident so the A-Side could not interact with B-Side Hardware and Software.

That seems like something of a fundamental design oversight for such an important mission.
Title: Re: LIVE: H-IIA - Hitomi (ASTRO-H) - February 17, 2016 (08:45 UTC)
Post by: Thomas Dorman on 04/21/2016 03:16 pm
Embry-Riddle Students Track, Observe Damaged Hitomi X-ray Satellite and Its Debris with Optical Telescope - See more at:
http://news.erau.edu/top-news/embry-riddle-students-track-and-observe-damaged-hitomi-x-ray-satellite-and-its-debris-with-optical-telescope#sthash.ndkiSkkM.dpuf

Now a tumble rates 2.6 seconds. Look back at our graphic output at frame rates of 1/30th of a second.

Regards
Title: Re: LIVE: H-IIA - Hitomi (ASTRO-H) - February 17, 2016 (08:45 UTC)
Post by: Thomas Dorman on 04/28/2016 02:36 am
 We stacked our video and did a profile gray scale surface plot graphic representation of our 4-2-2016 video of the Astro H , A debris.
(http://i284.photobucket.com/albums/ll34/skyflash_14700/Astro%20H%20A%20debris%20stacked%20image_zpskzeitqr9.jpg) (http://s284.photobucket.com/user/skyflash_14700/media/Astro%20H%20A%20debris%20stacked%20image_zpskzeitqr9.jpg.html)
Then using Image J we generated the profile gray scale brightness surface plot. We add second marker.
(http://i284.photobucket.com/albums/ll34/skyflash_14700/Plot%20of%20Astro%20H%20A%20debris%20profile%20plot_zpsaefnydfx.jpg) (http://s284.photobucket.com/user/skyflash_14700/media/Plot%20of%20Astro%20H%20A%20debris%20profile%20plot_zpsaefnydfx.jpg.html)

We then asked help from members of the AstroIMageJ forum for help to give a better understanding of flash rates for Astro H, A debris from our video from 4-2-2016. A member Christopher help generate additional plots. Below is his charts and comments. Our thanks to Christopher on the AstroImageJ forum.
...
Thomas,

Here are the results I get using AIJ to extract photometric data, and then Period04 to extract a possible  period in the data - if any.

As the found period are not matching the results you posted here previously, this is to be taken with some caution. Nevertheless, this may be convincing at first sight.

To extract photometry, I compared the satellite brightness to the bright star visible in the lower left corner of the image.
(http://i284.photobucket.com/albums/ll34/skyflash_14700/Chris%20Plot%201_zpsjcnvnppc.png) (http://s284.photobucket.com/user/skyflash_14700/media/Chris%20Plot%201_zpsjcnvnppc.png.html)
The brightness is in relative flux to the star flux, which is 1, by convention.

Please note that : the satellite brightness sometimes droped to a level very near 0, so the bottom of the light curve is somewhat noisy. And : some of the brightest images of the satellite are partially saturated, so the satellite brightness could be sometimes more elevated that it appears here.
Also, the last 20 images of the avi were not usable because the satellite was near the edge ; there remains only 242 images to be measured.

At first sight, a period near 1 second seems visible from the raw curve.

Using Period04, two periods seems to emerge at a level of confidence :

(Below F1 and F2 are frequencies ; first col = freq , sec col = amplitude , third col = phase ; residual are in amplitude = most of the scintillation noise, presumably at first sight)

F1 0.769059429465814    0.541805937197838        0.104171144385021
F2 1.54564613145243    0.442123765492428        0.96015439054003
Residuals = 0.481029316

Here are the graph showing the two imbricated periods :
(http://i284.photobucket.com/albums/ll34/skyflash_14700/Chris%20Plot%202_zps7nwwtssx.png) (http://s284.photobucket.com/user/skyflash_14700/media/Chris%20Plot%202_zps7nwwtssx.png.html)
Period04 is not always as good as needed to derive amplitudes, so be cautious with this.

Now : here are the Fourier graphs showing the used peaks in the analyze , and the phase plot.
As you can see, the plot is not totally convincing, as the residuals are somewhat dispersed. Going further is this analyze seems not to be feasible as there is not enough data, I think. Well, maybe not  ;-)
(http://i284.photobucket.com/albums/ll34/skyflash_14700/Chris%20Plot%203%20a_zpswxnxvm9h.png) (http://s284.photobucket.com/user/skyflash_14700/media/Chris%20Plot%203%20a_zpswxnxvm9h.png.html)
(http://i284.photobucket.com/albums/ll34/skyflash_14700/Chris%20plot%203%20b_zpsd8awmtei.png) (http://s284.photobucket.com/user/skyflash_14700/media/Chris%20plot%203%20b_zpsd8awmtei.png.html)

(http://i284.photobucket.com/albums/ll34/skyflash_14700/Chris%20Plot%204_zpsoz9a1ujo.png) (http://s284.photobucket.com/user/skyflash_14700/media/Chris%20Plot%204_zpsoz9a1ujo.png.html)
About the scintillation : as anyone can see from your video, the main period (the one that brings the satellite from dark to brightness) is evidently not due to the atmopheric scintillation.
To evaluate the real impact of the atmospheric scintillation we need to know more detail about the video :

specially what was the altitude of the satellite when the images were taken. What was the estimated magnitude of the satellite, and what was the used gear (telescope/camera).

Now, really, I do not think scintillation is a real issue here, as the scintillation is probably no more than a few percent of the variation (this can be derived from the comparison star, if needed). More : some noise seems to be due to the file format (compression).

Two more thinking : As there was only 8 seconds of data to analyze, the result is very partial. It could be greatly improved by adding more images, if you have some.
The period as shown here is probably only a part of the reality : should the satellite be impacted by something, the satellite is possibly spinning around 3 axes, with more than 2 periods ...

Now, the freq 2 is almost double as freq 1, so it may be that there is only one rotation period, with two flashes during one rotation.

Well, I hope this will help ; and you get the result before the monsoon ;-)

If needed, I can send you the original extracted data ; in this case : please let me know your email adress here and I will contact you privately.

If you have news, I may be pleased to reader further on this case, so post here, please!


Christophe

...
 We also wrote Dr. Barjatya head of the Embray-Riddel. Below is Dr. Barjatya reply to us. Our thanks to Dr. Barjatya for his reply and link too his students work.
Hi Thomas,

Thanks for reaching out to us for clarification.

We would like to be very clear: we do not say that the 'tumble rate' is
2.6 second. That requires a detailed physical knowledge of the space
object to characterize the flash pattern.
Instead we simply say 'consistent flash pattern of 2.6 seconds'.
Please see our news release at:
https://news.erau.edu/top-news/embry-riddle-students-track-and-observe-damaged-hitomi-x-ray-satellite-and-its-debris-with-optical-telescope

Now... you can look at more detailed data on sail.erau.edu/Hitomi.html
We do aperture photometry with corrections for atmospheric extinction
and range. We do not do scintillation correction but as is self evident
in the data, we don't need to. We have significant signal to noise ratio.

As you look at the photometry output
(http://sail.erau.edu/images/hitomi_top.png) one could even argue that
that the flash pattern is as quick as 1.3 second. But we were looking at
the repeatability, which in this data-set happens at 2.6 seconds. Now
note that 1.3, 2.6, 5.2 and 11 are all multiples. Thus, it is in the eye
of the beholder to see where the flash pattern repeats itself.
But to convert that into 'tumble rate' one would need to know the piece
surface geometry, which I believe only the folks at JAXA know the best.

We will slowly release some more research results at the above webpage.
A full detailed analysis will be presented at the American Astronomical
Society meeting in June in San Diego. And will post all those results on
the website after the conference.

Cheers,
Aroh
...........

Disclaimer: For the record we are no more than a backyard  sky watcher/satellite observer with zero expertise.

Regards
Thomas
Title: Re: LIVE: H-IIA - Hitomi (ASTRO-H) - February 17, 2016 (08:45 UTC)
Post by: jacqmans on 04/28/2016 11:05 am
April 28, 2016 (JST)

Operation Plan of X-ray Astronomy Satellite ASTRO-H (Hitomi)

The Japan Aerospace Exploration Agency (JAXA) established the emergency headquarters led by President Okumura and has been doing its utmost to understand the anomaly of the X-ray Astronomy Satellite ASTRO-H ("Hitomi"). We have made every effort to
confirm the status of ASTRO-H and to regain its functions. Unfortunately, based on our rigorous technical investigation, we had to conclude as follows.

(1) Most of our analyses including simulations on the mechanisms of object separation, it is highly likely that both solar array paddles had broken off at their bases where they are vulnerable to rotation.

(2) Originally, we had some hopes to restore communication with ASTRO-H since we thought we  received signals from ASTRO-H three times after object separation. However, we had to conclude that the received signals were not from ASTRO-H due to the differences
in frequencies as a consequence of technological study.

JAXA has also received information from several overseas organizations that indicated the separation of the two solar array paddles from ASTRO-H. Considering this information, we have determined that we cannot restore the ASTRO-H's functions.

Accordingly, JAXA will cease the efforts to restore ASTRO-H and will focus on the investigation of anomaly causes. We will carefully review all phases from design, manufacturing, verification, and operations to identify the causes that may have led
to this anomaly including background factors.

JAXA  expresses the deepest regret for the fact that we had to discontinue the operations of ASTRO-H  and extends our most sincere apologies to everyone who has supported ASTRO-H believing in the excellent results ASTRO-H would bring, to all overseas
and domestic partners including NASA, and to all foreign and Japanese astrophysicists who were planning to use the observational results from ASTRO-H for their studies.

JAXA also would like to take this opportunity to send our profound appreciation to all overseas and domestic organizations for all of their help in confirming the status of ASTRO-H through ground-based observations  and other means.
Title: Re: LIVE: H-IIA - Hitomi (ASTRO-H) - February 17, 2016 (08:45 UTC)
Post by: yoichi on 04/28/2016 11:59 pm
http://www.nature.com/news/software-error-doomed-japanese-hitomi-spacecraft-1.19835
Software error doomed Japanese Hitomi spacecraft
Space agency declares the astronomy satellite a loss.

The satellite managed to make one crucial astronomical observation before the accident, capturing gas motions in a galaxy cluster in the constellation Perseus. The instrument that made the observation, a high-resolution spectrometer, had been in the works for three decades. Two earlier versions of it were lost in previous spacecraft failures.

Hitomi’s troubles began in the weeks after launch, with its 'star tracker' system, which is one of several systems on board that are designed to keep the satellite oriented in space. The star tracker experienced glitches whenever it passed over the eastern coast of South America, through a region known as the South Atlantic Anomaly. Here, the belts of radiation that envelop Earth dip relatively low in the atmosphere, exposing satellites to extra doses of energetic particles.
Title: Re: LIVE: H-IIA - Hitomi (ASTRO-H) - February 17, 2016 (08:45 UTC)
Post by: robertross on 04/29/2016 11:01 pm
I'm gutted. I had such high hopes for this spacecraft (including its Canadian connection).

As noted above, three decades to build the spectrometer. I wonder if there are thoughts on manifesting it for another spacecraft?
Title: Re: LIVE: H-IIA - Hitomi (ASTRO-H) - February 17, 2016 (08:45 UTC)
Post by: russianhalo117 on 04/29/2016 11:37 pm
I'm gutted. I had such high hopes for this spacecraft (including its Canadian connection).

As noted above, three decades to build the spectrometer. I wonder if there are thoughts on manifesting it for another spacecraft?
They have had such problems over and over with the unlucky and poorly built.engineered Astro series. If they are going to re-fly it they should be forced to switch to more reliable bus from say the United States or European Union. I'm just getting sick and tired of every Japanese SC failure that has occurred in the last two plus decades and some change of my life.
Title: Re: LIVE: H-IIA - Hitomi (ASTRO-H) - February 17, 2016 (08:45 UTC)
Post by: GClark on 04/30/2016 06:40 am
I must respectfully disagree.  Asuka and Suzaku worked for 7 and 10 years respectively before they failed.  Akari operated successfully for 5 1/2 years.  Only Hitomi has been a total failure.

1 out of 7 ain't bad odds, given the Japanese dedication to holding costs down on their science missions.
Title: Re: LIVE: H-IIA - Hitomi (ASTRO-H) - February 17, 2016 (08:45 UTC)
Post by: Star One on 04/30/2016 07:24 am
I must respectfully disagree.  Asuka and Suzaku worked for 7 and 10 years respectively before they failed.  Akari operated successfully for 5 1/2 years.  Only Hitomi has been a total failure.

1 out of 7 ain't bad odds, given the Japanese dedication to holding costs down on their science missions.
Well maybe they should re-examine the idea of always holding down costs if it's going to cause major failures such as this. Better to spend a bit more money if it means avoiding this kind of loss.
Title: Re: LIVE: H-IIA - Hitomi (ASTRO-H) - February 17, 2016 (08:45 UTC)
Post by: yoichi on 05/27/2016 12:58 pm
http://global.jaxa.jp/projects/sat/astro_h/files/topics_20160524.pdf
Hitomi Experience Report: Investigation of Anomalies Affecting the X-ray Astronomy Satellite “Hitomi” (ASTRO-H)
May 24, 2016
JAXA
Title: Re: LIVE: H-IIA - Hitomi (ASTRO-H) - February 17, 2016 (08:45 UTC)
Post by: gospacex on 05/27/2016 02:27 pm
I must respectfully disagree.  Asuka and Suzaku worked for 7 and 10 years respectively before they failed.  Akari operated successfully for 5 1/2 years.  Only Hitomi has been a total failure.

1 out of 7 ain't bad odds, given the Japanese dedication to holding costs down on their science missions.
Well maybe they should re-examine the idea of always holding down costs if it's going to cause major failures such as this. Better to spend a bit more money if it means avoiding this kind of loss.

It's easy to say post-factum.
Spending more and more money and adding layers and layers of testing can give you a very reliable system... which then ends up being too costly and noncompetitive. Ask ULA.

Finding a good balance between reliability and cost is nowhere near easy.
Title: Re: LIVE: H-IIA - Hitomi (ASTRO-H) - February 17, 2016 (08:45 UTC)
Post by: Sam Ho on 05/27/2016 08:35 pm
http://global.jaxa.jp/projects/sat/astro_h/files/topics_20160524.pdf
Hitomi Experience Report: Investigation of Anomalies Affecting the X-ray Astronomy Satellite “Hitomi” (ASTRO-H)
May 24, 2016
JAXA
That's quite a mishap report.  As with most mishaps, there's a chain of events leading up to the loss of spacecraft.

1. February 28, 2016: Operator fails to remove minus signs in copying data from one tool to another.  Verification of the dataset is missed twice.  Root cause is lack of documentation.  Result is that Thruster Safe Hold mode is rendered unsafe and will instead spin spacecraft up until catastrophic structural failure occurs.  (Mechanism 3)

2. Design decision: Interaction of Star Tracker and Inertial Reference Unit logic in attitude control system.  Star tracker mode switch causes glitch in IRU bias estimate, which the Star tracker corrects over time, but if the Star tracker suffers a glitch as well, the IRU can end up far enough off that the AOCS rejects the Star tracker's correction when the Star tracker comes back on line.  This happens March 26.  (Mechanism 1)

3. Design decision: Reaction Wheel Safe Hold is triggered by Attitude Control System, not by Sun Sensors.  The failure above means that the AOCS has the wrong state, so it never triggers RW Safe Hold.  Reason for this decision is that Sun Sensor field of view is smaller than the off-pointing in normal operation.  (Mechanism 2)

4. Catastrophic structural failure.  Solar arrays break off.  (Mechanism 4)
Title: Re: LIVE: H-IIA - Hitomi (ASTRO-H) - February 17, 2016 (08:45 UTC)
Post by: Star One on 05/27/2016 08:55 pm
I must respectfully disagree.  Asuka and Suzaku worked for 7 and 10 years respectively before they failed.  Akari operated successfully for 5 1/2 years.  Only Hitomi has been a total failure.

1 out of 7 ain't bad odds, given the Japanese dedication to holding costs down on their science missions.
Well maybe they should re-examine the idea of always holding down costs if it's going to cause major failures such as this. Better to spend a bit more money if it means avoiding this kind of loss.

It's easy to say post-factum.
Spending more and more money and adding layers and layers of testing can give you a very reliable system... which then ends up being too costly and noncompetitive. Ask ULA.

Finding a good balance between reliability and cost is nowhere near easy.

What is being competitive got to do with a mission like this so I don't see how the comparison to ULA is at all valid. This is a bespoke science mission not a launcher supplier.
Title: Re: LIVE: H-IIA - Hitomi (ASTRO-H) - February 17, 2016 (08:45 UTC)
Post by: gospacex on 05/28/2016 07:05 pm
I must respectfully disagree.  Asuka and Suzaku worked for 7 and 10 years respectively before they failed.  Akari operated successfully for 5 1/2 years.  Only Hitomi has been a total failure.

1 out of 7 ain't bad odds, given the Japanese dedication to holding costs down on their science missions.
Well maybe they should re-examine the idea of always holding down costs if it's going to cause major failures such as this. Better to spend a bit more money if it means avoiding this kind of loss.

It's easy to say post-factum.
Spending more and more money and adding layers and layers of testing can give you a very reliable system... which then ends up being too costly and noncompetitive. Ask ULA.

Finding a good balance between reliability and cost is nowhere near easy.

What is being competitive got to do with a mission like this so I don't see how the comparison to ULA is at all valid. This is a bespoke science mission not a launcher supplier.

Science missions cost money too. You need to convince government to give you that money. The more you ask for, the lesser are chances the answer will be positive.

Therefore for science missions you still need to play the same balancing act between lowering costs and ensuring high reliability.
Title: Re: LIVE: H-IIA - Hitomi (ASTRO-H) - February 17, 2016 (08:45 UTC)
Post by: Star One on 06/13/2016 05:14 pm
NASA and JAXA begin discussions on aftermath of Hitomi failure

http://spacenews.com/nasa-and-jaxa-begin-discussions-on-aftermath-of-hitomi-failure/

Certainly doesn't look there will be any full fledged like for like replacement mission anytime soon.
Title: Re: LIVE: H-IIA - Hitomi (ASTRO-H) - February 17, 2016 (08:45 UTC)
Post by: jacqmans on 06/15/2016 09:24 am
June 15, 2016 (JST)

JAXA Executives Take Pay Cut Due to ASTRO-H (Hitomi) Anomaly

Due to the anomaly experienced with X-Ray Astronomy Satellite ASTRO-H (Hitomi), three of the Japan Aerospace Exploration Agency's executive employees have decided to take a 10% pay cut to their monthly salary for four months, to be effective July 2016.

The affected employees are as follows:
President: Naoki Okumura
Senior Vice President: Mamoru Endo
Vice President/Director General, Institute of Space and Astronautical Science: Saku Tsuneta


URL:
http://global.jaxa.jp/press/2016/06/20160615_hitomi.html


National Research and Development Agency Japan Aerospace Exploration Agency (JAXA)
Title: Re: LIVE: H-IIA - Hitomi (ASTRO-H) - February 17, 2016 (08:45 UTC)
Post by: Scylla on 07/07/2016 04:19 pm
The final image sent by doomed Japanese Hitomi satellite
http://www.bbc.com/news/world-asia-36732336

Image of the Perseus cluster taken by Nasa's Chandra X-ray satellite, overlaid with data taken by Hitomi, outlined by an orange box, showing X-rays emitted by iron and nickel in hot gas between the galaxies
Title: Re: LIVE: H-IIA - Hitomi (ASTRO-H) - February 17, 2016 (08:45 UTC)
Post by: Star One on 07/08/2016 05:48 pm
Japan’s Hitomi observatory made cosmic discovery before failing

http://spaceflightnow.com/2016/07/07/japans-hitomi-observatory-made-cosmic-discovery-before-failing/
Title: Re: LIVE: H-IIA - Hitomi (ASTRO-H) - February 17, 2016 (08:45 UTC)
Post by: yoichi on 07/14/2016 01:54 pm
http://www.jaxa.jp/press/2016/07/20160714_hitomi_j.html
For consideration of the successor to the X-ray astronomy satellite ASTRO-H

http://www.jaxa.jp/press/2016/07/files/20160714_hitomi_01_j.pdf
(1.1MB/Japanese)
Title: Re: LIVE: H-IIA - Hitomi (ASTRO-H) - February 17, 2016 (08:45 UTC)
Post by: as58 on 07/20/2016 08:19 pm
So it looks like a reflight in 2020. Hitomi is really following in Suzaku's footsteps
Title: LIVE: H-IIA - Hitomi (ASTRO-H) - February 17, 2016 (08:45 UTC)
Post by: Star One on 07/20/2016 08:26 pm
Jeff Foust –  ‏@jeff_foust

Hertz: JAXA is asking permission to reprogram funding in its current fiscal year to start ASTRO-H2 this calendar year; launch 2020.

NASA’s Paul Hertz: NASA doesn’t want to get into a partnership unless we’re confident it will result in a successful mission.

Back at the astrophysics subcommittee meeting, some members seem concerned about working with JAXA because of Hitomi and previous failures

Title: Re: LIVE: H-IIA - Hitomi (ASTRO-H) - February 17, 2016 (08:45 UTC)
Post by: Star One on 07/21/2016 06:39 pm
Article that fleshes out the above Twitter posts.

http://spacenews.com/nasa-may-build-replacement-instrument-for-japanese-astronomy-mission/
Title: LIVE: H-IIA - Hitomi (ASTRO-H) - February 17, 2016 (08:45 UTC)
Post by: Star One on 09/22/2016 07:33 pm
Quote
Jeff Foust –  ‏@jeff_foust

Okumura: expect Diet to approve budget bill, and thus decide on funding for ASTRO-H replacement, by the end of December.

https://mobile.twitter.com/jeff_foust/status/779004111886876673
Title: Re: LIVE: H-IIA - Hitomi (ASTRO-H) - February 17, 2016 (08:45 UTC)
Post by: Sam Ho on 09/24/2016 07:36 pm
Quote
Jeff Foust –  ‏@jeff_foust

Okumura: expect Diet to approve budget bill, and thus decide on funding for ASTRO-H replacement, by the end of December.

https://mobile.twitter.com/jeff_foust/status/779004111886876673
Jeff Foust's article on the above:

http://spacenews.com/japan-to-decide-on-hitomi-replacement-by-years-end/
Title: Re: LIVE: H-IIA - Hitomi (ASTRO-H) - February 17, 2016 (08:45 UTC)
Post by: zubenelgenubi on 06/14/2017 12:50 am
Cross-posting from X-Ray Astronomy Recovery Mission (XARM) thread (http://forum.nasaspaceflight.com/index.php?topic=42662.0):

Some good news as this mission will replace the recently lost Hitomi.

Quote
WASHINGTON — NASA and the Japanese space agency JAXA will start work this spring on an orbiting X-ray astronomy telescope to replace one lost shortly after launch last year.

In a presentation to the Committee on Astronomy and Astrophysics of the National Academies March 28, Paul Hertz, director of NASA’s astrophysics division, said a formal start of the project known as the X-Ray Astronomy Recovery Mission (XARM) will take place shortly after the start of the new Japanese fiscal year April 1.

“We are moving forward with the X-Ray Astronomy Recovery Mission,” Hertz said. The mission, he said, was included in the Japanese government’s budget for the new fiscal year, pending approval by the country’s parliament, the Diet.

- See more at: http://spacenews.com/nasa-and-jaxa-to-develop-replacement-x-ray-astronomy-telescope/#sthash.tVHs7M9C.dpuf
Title: Re: LIVE: H-IIA - Hitomi (ASTRO-H) - February 17, 2016 (08:45 UTC)
Post by: Asteroza on 09/07/2017 08:28 am
There appears to be additional fallout from the Hitomi incident now.

https://www.nikkei.com/article/DGXLZO20437460X20C17A8TJM000/ (https://www.nikkei.com/article/DGXLZO20437460X20C17A8TJM000/)
One of the Epislon 2019 launches appears to have been canceled, possibly to assist funding a Hitomi replacement.

http://www3.nhk.or.jp/shutoken-news/20170905/3669001.html (http://www3.nhk.or.jp/shutoken-news/20170905/3669001.html)
NEC is paying a 500 million yen "fine" for the incident as a settlement to JAXA
Title: Re: LIVE: H-IIA - Hitomi (ASTRO-H) - February 17, 2016 (08:45 UTC)
Post by: Star One on 11/15/2017 07:10 pm
Hitomi mission glimpses cosmic recipe for the nearby Universe

Quote
Thanks to an in-depth look into the composition of gas in the Perseus galaxy cluster, Japan’s Hitomi mission has given scientists new insights into the stellar explosions that formed its chemical elements.

Before its brief mission ended unexpectedly in March 2016, Japan’s Hitomi X-ray observatory captured exceptional information about the motions of hot gas in the Perseus galaxy cluster. Now, thanks to unprecedented detail provided by an instrument developed jointly by NASA and the Japan Aerospace Exploration Agency (JAXA), scientists have been able to analyze more deeply the chemical make-up of this gas, providing new insights into the stellar explosions that formed most of these elements and cast them into space.

https://astronomynow.com/2017/11/14/hitomi-mission-glimpses-cosmic-recipe-for-the-nearby-universe/
Title: Re: LIVE: H-IIA - Hitomi (ASTRO-H) - February 17, 2016 (08:45 UTC)
Post by: eeergo on 02/11/2021 08:16 am
https://twitter.com/planet4589/status/1359645966169686023