Author Topic: H-2A (F-19) - IGS (Optical-4) - September 23, 2011  (Read 37718 times)

Offline Chris Bergin

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Offline Chris Bergin

Re: H-2A (F-19) - IGS (Optical-4) - September 23, 2011
« Reply #41 on: 09/23/2011 05:42 am »
Thanks to our friends on twitter, we're told @kimi_lica was the person with the camera filming this, so I'm posting to provide additional accreditation :)
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Offline Salo

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Re: H-2A (F-19) - IGS (Optical-4) - September 23, 2011
« Reply #43 on: 09/23/2011 05:47 am »

Offline Salo

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Offline Salo

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Offline input~2

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Re: H-2A (F-19) - IGS (Optical-4) - September 23, 2011
« Reply #46 on: 09/23/2011 06:44 am »
JAXA press release (in Japanese) announcing launch success for Optical-4 satellite at 13:36 JST.
http://www.jaxa.jp/press/2011/09/20110923_h2af19_j.html

Offline input~2

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Re: H-2A (F-19) - IGS (Optical-4) - September 23, 2011
« Reply #47 on: 09/23/2011 06:52 am »
Short article:
http://www.nasaspaceflight.com/2011/09/japanese-h-2a-launches-new-igs-military-satellite/
Quote
No specific details were released on this latest IGS satellite, known  only as Optical-4, although unconfirmed reports claim it was  successfully separated after its ride uphill on the H-2A.
The JAXA release confirms separation of the IGS satellite.

Offline input~2

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Re: H-2A (F-19) - IGS (Optical-4) - September 23, 2011
« Reply #48 on: 09/23/2011 07:04 am »

Offline input~2

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Re: H-2A (F-19) - IGS (Optical-4) - September 23, 2011
« Reply #49 on: 09/23/2011 07:51 am »
Short article:
http://www.nasaspaceflight.com/2011/09/japanese-h-2a-launches-new-igs-military-satellite/
Quote
A third optical satellite IGS 4A and a second radar satellite IGS  4B were then launched on 24 February 2007. IGS 4A is classed as a  advanced and experimental optical satellite, based on the Synthetic  Aperture Radar (SAR) technology.
AFAIU, a SAR antenna is used on Radar satellites not on optical satellites, which typically use telescopes.

Also, according to the Japanese Wikipedia page on IGS (different from the English version ;D !):
IGS-4A was "Radar-2" not an optical satellite while IGS-4B was Optical-3-Demo, not a radar satellite.
IGS-5A launched on Nov 28, 2009 was Optical-3.
AFAIU, the "Optical-4" launched this morning would correspond to "IGS-6A"
« Last Edit: 09/23/2011 08:01 am by input~2 »

Offline input~2

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Re: H-2A (F-19) - IGS (Optical-4) - September 23, 2011
« Reply #50 on: 09/23/2011 08:16 am »
Two objects have now been catalogued by Stratcom, 11050A/37813 & 11050B/37814, albeit without public orbital elements

Offline input~2

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Re: H-2A (F-19) - IGS (Optical-4) - September 23, 2011
« Reply #51 on: 09/23/2011 12:43 pm »
Yomiuri online quotes "about 60 cm" for the maximum resolution of "Optical-4", the same as Optical-3.
According to the article a radar satellite is scheduled to be launched this year, and another one next year
http://www.yomiuri.co.jp/science/news/20110923-OYT1T00346.htm


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Re: H-2A (F-19) - IGS (Optical-4) - September 23, 2011
« Reply #53 on: 09/23/2011 03:07 pm »
Thanks Rui & Fuji for the launch coverage (since I was sleeping  :) )
And for the updates from our other friends. :)

Congrats to the teams for a successful launch & deploy!

Offline input~2

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Re: H-2A (F-19) - IGS (Optical-4) - September 23, 2011
« Reply #54 on: 09/24/2011 05:16 pm »
According to Stratcom,Object A (presumably Optical-4) is in the following orbit:
589km x 590km x 97.69 Period 96.47 minutes
Object B (which could be the H-2A second stage) is in the following orbit:
564km x 591km x 97.65 Period 96.23 minutes

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Offline yg1968

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Re: H-2A (F-19) - IGS (Optical-4) - September 23, 2011
« Reply #56 on: 09/26/2011 11:47 pm »
See also here:

Offline yoichi

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Re: H-2A (F-19) - IGS (Optical-4) - September 23, 2011
« Reply #57 on: 09/27/2011 12:59 am »

Offline input~2

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Re: H-2A (F-19) - IGS (Optical-4) - September 23, 2011
« Reply #58 on: 12/10/2011 05:01 pm »
According to Stratcom,Object A (presumably Optical-4) is in the following orbit:
589km x 590km x 97.69 Period 96.47 minutes
Object B (which could be the H-2A second stage) is in the following orbit:
564km x 591km x 97.65 Period 96.23 minutes
Now:
  • Object A is IGS-6A (no orbital data)
  • Object B is H-2A 2nd stage in 563 x 589 km x 97.65 Period 96.18 minutes
  • Object C & Object D are indicated as H-2A debris (Radar Cross Sections of 0.003)

  • Offline pargoo

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    Re: H-2A (F-19) - IGS (Optical-4) - September 23, 2011
    « Reply #59 on: 12/10/2011 09:47 pm »
         Do we have a better launch pic than the one above?  I'm not talking hi-res - fat chance! - just...better.  The JAXA site has nothing about F19, as far as I can tell.

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