Author Topic: Zhongxing-9A (Chinasat-9A), CZ-3B/G2 - XSLC - June 18, 2017 (16:11 UTC)  (Read 16597 times)

Offline beidou

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A short description (in Chinese) on this satellite:
"中星9A卫星(鑫诺4号)采用我国自主研发的东方红四号卫星平台,将提供18个36MHz带宽和4个54MHz带宽BSS规划频段转发器直播服务。中星9A卫星计划与中星9号直播卫星一起满足中国广播电视、数字电影、数字宽带多媒体系统及各种信息广播和娱乐广播的需求。"
« Last Edit: 06/29/2017 05:35 PM by Satori »

Offline Adonis1

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Re: Zhongxing-9A (Chinasat-9A), CZ-3B/E - XSLC, 2013(?)
« Reply #1 on: 11/14/2012 03:01 PM »
ChinaSat 9A
ChinaSat 9A (SinoSat-4) is based on the DFH-4 satellite platform and will provide direct broadcast services with eighteen 36MHz and four 54MHz BSS Ku band transponders. Together with ChinaSat-9 direct broadcast satellite, ChinaSat-9A is designed to serve the radio and TV transmission, digital film and digital broadband multi-media system as well as information and entertainment broadcasting market.

http://www.chinasatcom.com/en/News_Info.aspx?m=20110329113845577061&n=20110329133944310204

Offline beidou

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Re: Zhongxing-9A (Chinasat-9A), CZ-3B/E - XSLC, 2018(?)
« Reply #2 on: 07/04/2016 08:10 PM »
1) ChinaSat 9A

ChinaSat 9A (SinoSat-4) is based on the DFH-4 satellite platform and will provide direct broadcast services with eighteen 36MHz and four 54MHz BSS Ku band transponders. Together with ChinaSat-9 direct broadcast satellite, ChinaSat-9A is designed to serve the radio and TV transmission, digital film and digital broadband multi-media system as well as information and entertainment broadcasting market.

http://english.csat.spacechina.com/n931903/c931925/content.html

Offline zubenelgenubi

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Re: Zhongxing-9A (Chinasat-9A), CZ-3B/G2 - XSLC, 2017(?)
« Reply #3 on: 05/31/2017 07:22 PM »
Cross-posting from the Chinese launch schedule thread:
According to a post on the 9ifly Chinese space forum, there are informations about a commercial launch on June 13/17 (possibly ZX-9A Zhongxing-9A) and a Beidou-3 launch on July 13/17.
« Last Edit: 05/31/2017 07:25 PM by zubenelgenubi »
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Online Galactic Penguin SST

I wonder if this still used the old bus for SinoSat-4/ChinaSat-9A or if the Chinese built a new one? There were reports on the Chinese web some years ago that parts of it were removed for use on other satellites.

Of course, there are other comsats in other parts of the world that got stored even longer before eventual use so.....
Chinese spaceflight is a cosmic riddle wrapped in a galactic mystery inside an orbital enigma... - (not) Winston Churchill

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Chinese spaceflight is a cosmic riddle wrapped in a galactic mystery inside an orbital enigma... - (not) Winston Churchill

Offline input~2

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A recent post on 9ifly makes reference to a launch on June 18 at 10pm (BST) /14:00 UTC

Online russianhalo117

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Stacking is completed, was not informed of the pad.

Offline input~2

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Launch planned around 16:08 UTC

A1423/17
-  A TEMPORARY RESTRICTED AREA ESTABLISHED WITHIN A CIRCLE CENTERED AT N2815E10201 WITH RADIUS OF 20KM, VERTICAL LIMITS: GND-UNL. GND - UNL, 18 JUN 16:01 2017 UNTIL 18 JUN 16:36 2017. CREATED: 14 JUN 11:05 2017
A1424/17 -  A TEMPORARY RESTRICTED AREA ESTABLISHED BOUNDED BY:N272200E1083650-N273125E1074313-N271528E1073946-N270603E1083315 BACK TO START.VERTICAL LIMITS:GND-UNL. GND - UNL, 18 JUN 16:04 2017 UNTIL 18 JUN 16:40 2017. CREATED: 14 JUN 11:09 2017

Online Galactic Penguin SST

Launch planned around 16:08 UTC

A1423/17
-  A TEMPORARY RESTRICTED AREA ESTABLISHED WITHIN A CIRCLE CENTERED AT N2815E10201 WITH RADIUS OF 20KM, VERTICAL LIMITS: GND-UNL. GND - UNL, 18 JUN 16:01 2017 UNTIL 18 JUN 16:36 2017. CREATED: 14 JUN 11:05 2017
A1424/17 -  A TEMPORARY RESTRICTED AREA ESTABLISHED BOUNDED BY:N272200E1083650-N273125E1074313-N271528E1073946-N270603E1083315 BACK TO START.VERTICAL LIMITS:GND-UNL. GND - UNL, 18 JUN 16:04 2017 UNTIL 18 JUN 16:40 2017. CREATED: 14 JUN 11:09 2017

Dunno what the source is but 9ifly has it at 16:12 UTC.  ;)
Chinese spaceflight is a cosmic riddle wrapped in a galactic mystery inside an orbital enigma... - (not) Winston Churchill

Offline input~2

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A1436/17 -  A TEMPORARY RESTRICTED AREA ESTABLISHED BOUNDED BY: N260808E1142921-N261444E1140013-N255858E1135553-N255223E1142456 BACK TO START.VERTICAL LIMITS:GND-UNL. GND - UNL, 18 JUN 16:05 2017 UNTIL 18 JUN 16:51 2017. CREATED: 14 JUN 23:37 2017

2 NOTAMed areas for resp. boosters and fairing debris indicated in the figure below:
« Last Edit: 06/15/2017 04:34 PM by input~2 »

Online Galactic Penguin SST

2 recent photos that shows that this launch is very much still on:  ;)

Sources: [1] [2]
Chinese spaceflight is a cosmic riddle wrapped in a galactic mystery inside an orbital enigma... - (not) Winston Churchill

Offline Chris Bergin

2 recent photos that shows that this launch is very much still on:  ;)

Sources: [1] [2]
LC-3?

LC-2 apparently, but a lot of people, waiting for a launch post, just got a notification for that, so some restraint would be advised until after launch.

Online Galactic Penguin SST

2 recent photos that shows that this launch is very much still on:  ;)

Sources: [1] [2]
LC-3?

That's LC-2.

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

Liftoff confirmed!
Chinese spaceflight is a cosmic riddle wrapped in a galactic mystery inside an orbital enigma... - (not) Winston Churchill


Offline input~2

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yes, references to "earthquake" on Weibo

Online Galactic Penguin SST

Dunno what's going on but there's no news since T-0 and that Chinese "insider" who has been very helpful with launch alerts tweeted "Cough". Uh, I'm not sure that's a good or bad sign.....  :-X

It's 2 am here so I'm off for now...  ???
Chinese spaceflight is a cosmic riddle wrapped in a galactic mystery inside an orbital enigma... - (not) Winston Churchill

Online russianhalo117

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China Spaceflight saying all media and officials silent. looking at tv sites they are no longer mentioning the launch in news tickers. also tracking sites not yet found anything on the orbit.

Latest Status update: https://twitter.com/cnspaceflight
« Last Edit: 06/18/2017 06:18 PM by russianhalo117 »

Offline Skyrocket

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China Spaceflight saying all media and officials silent. looking at tv sites they are no longer mentioning the launch in news tickers. also tracking sites not yet found anything on the orbit.

Latest Status update: https://twitter.com/cnspaceflight

Not a good sign...

Offline Alter Sachse

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China Spaceflight saying all media and officials silent. looking at tv sites they are no longer mentioning the launch in news tickers. also tracking sites not yet found anything on the orbit.

Latest Status update: https://twitter.com/cnspaceflight

Not a good sign...
It reminds me of the Gaofen 10 launch...

Offline input~2

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About launch mission codenames:
- This one was 07-79
- Last launch from Xichang was 07-77 (SJ-13) in April
- A poster on 9ifly speculates that 07-78 "should be the postponed launch of CZ-2C from Xichang"

Online Galactic Penguin SST

China Spaceflight saying all media and officials silent. looking at tv sites they are no longer mentioning the launch in news tickers. also tracking sites not yet found anything on the orbit.

Latest Status update: https://twitter.com/cnspaceflight

Not a good sign...
It reminds me of the Gaofen 10 launch...

Maybe the orbit is low. Anything on NORAD yet?
Chinese spaceflight is a cosmic riddle wrapped in a galactic mystery inside an orbital enigma... - (not) Winston Churchill

Online Galactic Penguin SST

Chinese spaceflight is a cosmic riddle wrapped in a galactic mystery inside an orbital enigma... - (not) Winston Churchill

Online russianhalo117

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China Spaceflight saying all media and officials silent. looking at tv sites they are no longer mentioning the launch in news tickers. also tracking sites not yet found anything on the orbit.

Latest Status update: https://twitter.com/cnspaceflight

Not a good sign...
It reminds me of the Gaofen 10 launch...

Maybe the orbit is low. Anything on NORAD yet?
Not sure how credible but here's a rumor of lower orbit than planned but the satellite's healthy.
Civil Tracking sites still have found nothing in the planned target injection orbit. Havent seen anything from NORAD or USSTRATCOM so far.
https://nssdc.gsfc.nasa.gov/nmc/SpacecraftQuery.jsp also doesnt find anything on orbit.
« Last Edit: 06/18/2017 11:49 PM by russianhalo117 »

Offline jcm

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China Spaceflight saying all media and officials silent. looking at tv sites they are no longer mentioning the launch in news tickers. also tracking sites not yet found anything on the orbit.

Latest Status update: https://twitter.com/cnspaceflight

Not a good sign...
It reminds me of the Gaofen 10 launch...

Maybe the orbit is low. Anything on NORAD yet?
Not sure how credible but here's a rumor of lower orbit than planned but the satellite's healthy.
Civil Tracking sites still have found nothing in the planned target injection orbit. Havent seen anything from NORAD or USSTRATCOM so far.
https://nssdc.gsfc.nasa.gov/nmc/SpacecraftQuery.jsp also doesnt find anything on orbit.

Yes, but NORAD/USSTRATCOM release of data to e.g. space-track.org has been running about a day late
for the past few months. So I don't expect anything till tomorrow.
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Online russianhalo117

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China Spaceflight saying all media and officials silent. looking at tv sites they are no longer mentioning the launch in news tickers. also tracking sites not yet found anything on the orbit.

Latest Status update: https://twitter.com/cnspaceflight

Not a good sign...
It reminds me of the Gaofen 10 launch...

Maybe the orbit is low. Anything on NORAD yet?
Not sure how credible but here's a rumor of lower orbit than planned but the satellite's healthy.
Civil Tracking sites still have found nothing in the planned target injection orbit. Havent seen anything from NORAD or USSTRATCOM so far.
https://nssdc.gsfc.nasa.gov/nmc/SpacecraftQuery.jsp also doesnt find anything on orbit.

Yes, but NORAD/USSTRATCOM release of data to e.g. space-track.org has been running about a day late
for the past few months. So I don't expect anything till tomorrow.

correct. just responding to GP's post. I should have put in a it takes a while to receive disclaimer in like you did in my post.
« Last Edit: 06/19/2017 12:12 AM by russianhalo117 »

Online Galactic Penguin SST

Not sure how credible but here's a rumor of lower orbit than planned but the satellite's healthy.

More rumors, this time from the "coughing guy" who was apparently on site:

- seems like the rocket 3rd stage might have some  attitude control problems of unknown source, based on telemetry he saw at the LCC
- satellite propellant usage for making up the shortfall "might be huge"
« Last Edit: 06/19/2017 03:47 AM by Galactic Penguin SST »
Chinese spaceflight is a cosmic riddle wrapped in a galactic mystery inside an orbital enigma... - (not) Winston Churchill

Offline Alter Sachse

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A half day away and only the "Sound of silence" :(

Online Galactic Penguin SST

Finally a terse official statement has come from CASC confirming that a problem on the rocket 3rd stage has put the satellite in a wrong orbit. It also confirms that the solar arrays and antennas on the satellite have been deployed.
http://m.spacechina.com/n1105979/c1670019/content.html
Chinese spaceflight is a cosmic riddle wrapped in a galactic mystery inside an orbital enigma... - (not) Winston Churchill

Offline Phillip Clark

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I wonder what the "effective measures" are that are being taken ..........

Offline chewi

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New broadcasting satellite fails to enter preset orbit
http://news.xinhuanet.com/english/2017-06/19/c_136377564.htm

XICHANG, Sichuan, June 19 (Xinhua) -- A broadcasting satellite, which was launched aboard the Long March-3B carrier rocket from southwest China's Xichang Satellite Launch Center at 12:11 a.m. Monday, failed to enter the preset orbit.

The exact reason for the failure of the radio and television broadcasting satellite is under investigation.

Offline GELORD

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Start Time 00:10:28 Beijing
与战士站岗、炊事员做饭一样,航天员是一种职业,工作就是飞行。

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Start Time 00:10:28 Beijing

It is not the official time
Launch Land Relaunch

Online Galactic Penguin SST

Orbit data now in:

42763/2017-035A: 193 x 16357 km x 25.68 deg.
42764/2017-035B: 192 x 16358 km x 25.68 deg.

I'm not even sure that's salvageable.... :-\
Chinese spaceflight is a cosmic riddle wrapped in a galactic mystery inside an orbital enigma... - (not) Winston Churchill

Offline input~2

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42764/2017-035B: 192 x 16358 km x 25.68 deg.
small edit for Object B: 192 x 16354 km x 25.68

Offline Phillip Clark

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Orbit data now in:
42763/2017-035A: 193 x 16357 km x 25.68 deg.
42764/2017-035B: 192 x 16358 km x 25.68 deg.
I'm not even sure that's salvageable.... :-\

I am sure that the altitude is too low for the satellite to get into GEO - and of course changing the inclination is the real killer.

Offline chewi

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1st LD: New broadcasting satellite fails to enter preset orbit
http://news.xinhuanet.com/english/2017-06/19/c_136377715.htm

XICHANG, Sichuan, June 19 (Xinhua) -- Communications satellite Zhongxing-9A, which was launched aboard the Long March-3B carrier rocket from southwest China's Xichang Satellite Launch Center at 12:11 a.m. Monday, has failed to enter the preset orbit.

Abnormal performance was identified during the third phase of the rocket launch, said the China Aerospace Science and Technology Corporation (CASC) Monday.

The exact reason for the failure is under investigation and related parties are taking measures to address the problem and send the satellite into the correct orbit.

The solar panels and communication antennae, however, have been deployed and the satellite system is operating under normal conditions, according to the CASC.

Offline eeergo

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Orbit data now in:

42763/2017-035A: 193 x 16357 km x 25.68 deg.
42764/2017-035B: 192 x 16358 km x 25.68 deg.

I'm not even sure that's salvageable.... :-\

That would make a dV to GEO of ~2100 m/s. Assuming a standard GTO with dV~1700 m/s, there is a ~400 m/s shortfall. This is about the dV budget for 8-10 years of GEO orbit- and station-keeping. Unless they can come up with creative ways of salvaging the orbit at the expense of less lifetime/fuel ( la Asiasat 3), it looks like a major loss. Of course, this bird may not be insured being a Government payload, so maybe they'll try to squeeze as much life out of it as they can, rather than ditch it to claim the insurance money.
-DaviD-

Offline input~2

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2017-035A    42763    CHINASAT 9A    294.22min    25.67    16361km    190km
2017-035B    42764    CZ-3B R/B         294.15min    25.68    16353km    193km

Offline input~2

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Rare pictures of the launch courtesy of Swiss watch Tag Heuer's cooperation with CASC
source

Offline jcm

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Orbit data now in:

42763/2017-035A: 193 x 16357 km x 25.68 deg.
42764/2017-035B: 192 x 16358 km x 25.68 deg.

I'm not even sure that's salvageable.... :-\

That would make a dV to GEO of ~2100 m/s. Assuming a standard GTO with dV~1700 m/s, there is a ~400 m/s shortfall. This is about the dV budget for 8-10 years of GEO orbit- and station-keeping. Unless they can come up with creative ways of salvaging the orbit at the expense of less lifetime/fuel ( la Asiasat 3), it looks like a major loss. Of course, this bird may not be insured being a Government payload, so maybe they'll try to squeeze as much life out of it as they can, rather than ditch it to claim the insurance money.

I calculate that you'd need 545 m/s to change this orbit into one with a standard GTO apogee of 35870 km,
a rather bigger shortfall that your calculation.
It would require a further 175 m/s to reach the 49600 km supersync apogee used by this mission's elder sibling, ZX-9.


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Offline saliva_sweet

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I calculate that you'd need 545 m/s to change this orbit into one with a standard GTO apogee of 35870 km,
a rather bigger shortfall that your calculation.
It would require a further 175 m/s to reach the 49600 km supersync apogee used by this mission's elder sibling, ZX-9.

Sounds like a LOM to me  :'(

Offline Alter Sachse

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Offline Lewis007

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Short launch video


Offline Steven Pietrobon

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Orbit data now in:

42763/2017-035A: 193 x 16357 km x 25.68 deg.
42764/2017-035B: 192 x 16358 km x 25.68 deg.

I calculate that you'd need 545 m/s to change this orbit into one with a standard GTO apogee of 35870 km,
a rather bigger shortfall that your calculation.

I seem to confirm that, assuming no change in inclination for the perigee burn. Perhaps Galactic Penguin calculations assumed a small change in inclination at perigee to optimise overall total delta-V.

Vp = sqrt(2/(Rp(Rp/Ra+1)))
Va = sqrt(2/(Ra(Ra/Rp+1)))
Vo = sqrt(/Ro)
Rp = R+Hp
Ra = R+Ha
Ro = R+Ho
R = 6378165 m
= 3.986005x10^14 m/s

Hp1 = 193 km
Ha1 = 16357 km
Vp1 = 9701.3 m/s

Hp2 = 193 km
Ha2 = 35870 km
Vp2 = 10246.4 m/s
Va2 = 1593.7 m/s

Δv1 = Vp2-Vp1 = 545.1 m/s

Ho = 35870 km
Vo = 3071.6 m/s
θ = 25.68

Δv2 = sqrt(Vo + Va2 - 2 Vo Va2 cos(θ)) = 1775.2 m/s

Δv = Δv1 + Δv2 = 2320.3 m/s
« Last Edit: 06/20/2017 08:26 AM by Steven Pietrobon »
Akin's Laws of Spacecraft Design #1:  Engineering is done with numbers.  Analysis without numbers is only an opinion.

Offline Steven Pietrobon

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OK, I've written a small program to see what savings an inclination change on the first burn would give. Its not much. Total delta-V is reduced from 2320.2 m/s to 2316.3 m/s, a saving of only 3.9 m/s. Excess delta-V is reduced to 2316.3-1775.2 = 541.1 m/s.

Enter initial perigee (km): 193
Enter initial apogee (km): 16357
Enter initial inclination (deg): 25.68

theta1 =  0.00 deg, dv1 =  545.1 m/s
theta2 = 25.68 deg, dv2 = 1775.2 m/s
dv = 2320.2 m/s

theta1 =  0.37 deg, dv1 =  548.9 m/s
theta2 = 25.31 deg, dv2 = 1767.5 m/s
dv = 2316.3 m/s
« Last Edit: 06/20/2017 09:59 AM by Steven Pietrobon »
Akin's Laws of Spacecraft Design #1:  Engineering is done with numbers.  Analysis without numbers is only an opinion.

Offline Alter Sachse

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if I understand correctly:
ZX-9A the latest orbital parameters: 251 x 17090 km; 26.8
(Thank you, Google-translator !) :)

https://twitter.com/cnspaceflight/status/877370968498241536
« Last Edit: 06/21/2017 05:38 AM by Alter Sachse »

Offline input~2

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if I understand correctly:
ZX-9A the latest orbital parameters: 251 x 17090 km; 26.8
(Thank you, Google-translator !) :)

https://twitter.com/cnspaceflight/status/877370968498241536

Yes corresponding to latest TLE at epoch June 19, 07:18 UTC for 2017-035A/42763

Online SmallKing

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Not sure how credible but here's a rumor of lower orbit than planned but the satellite's healthy.

More rumors, this time from the "coughing guy" who was apparently on site:

- seems like the rocket 3rd stage might have some  attitude control problems of unknown source, based on telemetry he saw at the LCC
- satellite propellant usage for making up the shortfall "might be huge"

And Long Lehao comfirmed this rumor
It was just a GNC malfunction
-The Stage was in a negative rolling, and it should be given a positive rolling instruction before second ignition of third stage. unfortunately, an opposite instruction was given

Full article: https://mp.weixin.qq.com/s/xmhpqx6XsXnFwBx0P47n3w
Launch Land Relaunch

Offline input~2

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Full article: https://mp.weixin.qq.com/s/xmhpqx6XsXnFwBx0P47n3w
According to the same interview, reaching final orbit will take 20 days and satellite lifetime could be 5 years down from 15 years

Full article: https://mp.weixin.qq.com/s/xmhpqx6XsXnFwBx0P47n3w
According to the same interview, reaching final orbit will take 20 days and satellite lifetime could be 5 years down from 15 years

Unless the translation I have is poor, the satellite's lifespan has been reduced to 5 years, meaning it lost 10 years of its total lifespan.

Offline input~2

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Full article: https://mp.weixin.qq.com/s/xmhpqx6XsXnFwBx0P47n3w
According to the same interview, reaching final orbit will take 20 days and satellite lifetime could be 5 years down from 15 years

Unless the translation I have is poor, the satellite's lifespan has been reduced to 5 years, meaning it lost 10 years of its total lifespan.
Yes that's what I meant

Offline Phillip Clark

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Has Zhongxing 9A been de-orbited?   The following orbit is derived from the latest element set issued for the catalogue number/international designator of the satellite:

Jun 19.304    26.82 deg      306.20 min      251 - 17,090 km    185 deg (AoP)

My guess is that all of the data for the 25.68 deg, ~192 - ~ 16,360 km orbits relate to the CZ-3B/E third stage.   With no data for the satellite for ten days, the possibility that the satellite is no longer in orbit must be considered.

Offline BabaORileyUSA

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Has Zhongxing 9A been de-orbited?   The following orbit is derived from the latest element set issued for the catalogue number/international designator of the satellite:

Jun 19.304    26.82 deg      306.20 min      251 - 17,090 km    185 deg (AoP)

My guess is that all of the data for the 25.68 deg, ~192 - ~ 16,360 km orbits relate to the CZ-3B/E third stage.   With no data for the satellite for ten days, the possibility that the satellite is no longer in orbit must be considered.

No, it wasn't likely to have been de-orbited.  For some time, JSpOC/18SPCS, lacking input from satellite owner/operators, has delayed the publication of an element set until the payload reaches its final orbit.

Offline Phillip Clark

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Has Zhongxing 9A been de-orbited?   The following orbit is derived from the latest element set issued for the catalogue number/international designator of the satellite:
Jun 19.304    26.82 deg      306.20 min      251 - 17,090 km    185 deg (AoP)
My guess is that all of the data for the 25.68 deg, ~192 - ~ 16,360 km orbits relate to the CZ-3B/E third stage.   With no data for the satellite for ten days, the possibility that the satellite is no longer in orbit must be considered.
No, it wasn't likely to have been de-orbited.  For some time, JSpOC/18SPCS, lacking input from satellite owner/operators, has delayed the publication of an element set until the payload reaches its final orbit.

Routinely for Chinese missions we don't get the intermediate orbits catalogued between GTO and GEO, but a ten days gap is rather unusual.

Offline BabaORileyUSA

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Has Zhongxing 9A been de-orbited?   The following orbit is derived from the latest element set issued for the catalogue number/international designator of the satellite:
Jun 19.304    26.82 deg      306.20 min      251 - 17,090 km    185 deg (AoP)
My guess is that all of the data for the 25.68 deg, ~192 - ~ 16,360 km orbits relate to the CZ-3B/E third stage.   With no data for the satellite for ten days, the possibility that the satellite is no longer in orbit must be considered.
No, it wasn't likely to have been de-orbited.  For some time, JSpOC/18SPCS, lacking input from satellite owner/operators, has delayed the publication of an element set until the payload reaches its final orbit.

Routinely for Chinese missions we don't get the intermediate orbits catalogued between GTO and GEO, but a ten days gap is rather unusual.

Usually, a bird takes less than that amount of time to reach GEO.  This wounded duck, however, will probably require a bit more time to reach GEO from where it was dropped off....

Offline Alter Sachse

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Has Zhongxing 9A been de-orbited?   The following orbit is derived from the latest element set issued for the catalogue number/international designator of the satellite:
Jun 19.304    26.82 deg      306.20 min      251 - 17,090 km    185 deg (AoP)
My guess is that all of the data for the 25.68 deg, ~192 - ~ 16,360 km orbits relate to the CZ-3B/E third stage.   With no data for the satellite for ten days, the possibility that the satellite is no longer in orbit must be considered.
No, it wasn't likely to have been de-orbited.  For some time, JSpOC/18SPCS, lacking input from satellite owner/operators, has delayed the publication of an element set until the payload reaches its final orbit.

Routinely for Chinese missions we don't get the intermediate orbits catalogued between GTO and GEO, but a ten days gap is rather unusual.

Usually, a bird takes less than that amount of time to reach GEO.  This wounded duck, however, will probably require a bit more time to reach GEO from where it was dropped off....
http://forum.nasaspaceflight.com/index.php?topic=30336.msg1692336#msg1692336
at least 20 days

Online Galactic Penguin SST

ChinaSat 9A has arrived in geostationary orbit on July 5 according to Chinese reports.
Chinese spaceflight is a cosmic riddle wrapped in a galactic mystery inside an orbital enigma... - (not) Winston Churchill

Online SmallKing

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Investigation shown RCS thruster malfunction led to this failure
http://www.spacechina.com/n25/n144/n206/n214/c1679151/content.html
Launch Land Relaunch

Offline Phillip Clark

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Congratulations on reaching GEO but what will the operational lifetime of the satellite be now with so much propellant unexpectedly required to get on-station?

Offline chewi

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Chinese satellite Zhongxing-9A enters preset orbit
http://news.xinhuanet.com/english/2017-07/06/c_136422178.htm

BEIJING, July 6 (Xinhua) -- The communications satellite Zhongxing-9A has entered its preset orbit over two weeks after its launch on June 19.

Abnormal performance was identified during the third phase of the Long March-3B launch, which failed to deliver the satellite as planned.

The satellite conducted 10 orbit adjustments with its onboard thrusters and Wednesday reached its preset orbit at 101.4 degrees east longitude over the equator, according to China Aerospace Science and Technology Corporation (CASC) Thursday.

Currently, the satellite's systems are operational and the transponders are on, said the CASC, adding that a series of tests will be carried out.

Zhongxing-9A is the first Chinese-made satellite for live radio and television broadcasts.

An anomaly was found on the carrier rocket's rolling control thruster, part of the attitude control engine, during the third gliding phase, according to an investigation.

The rocket team has also completed a thorough technology analysis and expanded examinations.

Online Galactic Penguin SST

Investigation shown RCS thruster malfunction led to this failure
http://www.spacechina.com/n25/n144/n206/n214/c1679151/content.html

To elaborate, the official statement points to "a failure of the roll-control RCS thrusters of the third stage during the coast phase" as to the cause.

This was actually first reported back on June 21 in an interview with ex-Long March 3 development program manager/chief designer Long Lehao (*) - he said that "......the rocket stage was in a negative roll rate during coasting, which should have been corrected through negative feedback with a positive roll rate command, but it went wrong during actual operations......".

I take that means it's more of a GNC/sensor failure than actual hardware failing, but that's just me.  :-X

Back to the satellite, it turns out that I was right in that it was really the ex-SinoSat-4 that was stored for 6 years (2010-2016) due to lack of satellite DBS demands.  ::) The satellite eventually reached 101.4 deg. East on July 5 at around 13:00 UTC.

One last thing - the s/n for the LM-3B is Y28.

(*) Despite long retired and well into the 90s, he is still one of the "default spokesperson" for reporters asking about Chinese rockets. He apparently still follows around rocket launches in the LCC, including the ill-fated LM-5 flight last week!
« Last Edit: 07/06/2017 12:03 PM by Galactic Penguin SST »
Chinese spaceflight is a cosmic riddle wrapped in a galactic mystery inside an orbital enigma... - (not) Winston Churchill

Offline input~2

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No new TLE from Spacetrack since June 19

Offline Phillip Clark

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Galactic Penguin ...... which CZ-3B please?

I always wonder why the Chinese translate the launch vehicle names from Changzheng to "Long March" when discussing them, but the satellite/spacecraft names are not similarly translated, other than just in passing occasionally.

Offline Liss

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At last found at 101.4 E.
This message reflects my personal opinion based on open sources of information.

Offline linxiaoyi

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New TLE:
edit: satellite is confirmed at 101.4E from new TLE
« Last Edit: 07/09/2017 08:12 AM by input~2 »
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