Author Topic: Shijian 12 - CZ-2D launch June 15, 2010  (Read 32646 times)

Offline Liss

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Re: Shijian 12 - CZ-2D launch June 14/15, 2010
« Reply #15 on: 06/16/2010 08:39 AM »
How is the orbit relativ to Shijian 7?
Different planes. SJ-7 passes descending node at 05:05 or so while SJ-12 passes at 07:58.
« Last Edit: 06/16/2010 02:47 PM by Liss »

Offline limen4

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Re: Shijian 12 - CZ-2D launch June 15, 2010
« Reply #16 on: 06/16/2010 11:50 AM »
Thank you Liss. At the moment we only know that SJ-12 was built by the Shanghai Academy (SAST), i.e. the same manufacturer as for SJ-7, whereas SY-1 was built by Harbin Insitute of Technology. Both SJ-7 and SY-1 seems to have been used for observation and tracking of the Asat test in January 2007.  There are rumors at 9ifly that SJ-12 could have IR-sensors on board.

Offline Liss

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Re: Shijian 12 - CZ-2D launch June 15, 2010
« Reply #17 on: 06/16/2010 02:49 PM »
Yes, if we speak about platform/payload builders SJ-12 looks much more like SJ-7 than SY-1.

Offline Liss

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Re: Shijian 12 - CZ-2D launch June 15, 2010
« Reply #18 on: 08/15/2010 02:17 PM »
On August 13, after intentional maneuvering, SJ-12 passed close to SJ-6F (2008-053B).

Offline Liss

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Re: Shijian 12 - CZ-2D launch June 15, 2010
« Reply #19 on: 08/16/2010 01:21 PM »
By Aug 13, SJ-12 set to precede SJ-6F by 160 km.
By Aug 15, it took a closer position at 27 km or so.
It is possible that today or tomorrow we'll see final approach.

Offline Satori

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Re: Shijian 12 - CZ-2D launch June 15, 2010
« Reply #20 on: 08/16/2010 04:33 PM »
These maneuvers are very interesting. What is your interpretation of this? Testing docking sensors? Preparing for new mission? Surveying other vehicle in orbit?

Offline Liss

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Re: Shijian 12 - CZ-2D launch June 15, 2010
« Reply #21 on: 08/16/2010 07:46 PM »
My guess is -- an inspection test.

Offline Stephan

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Re: Shijian 12 - CZ-2D launch June 15, 2010
« Reply #22 on: 08/19/2010 07:01 PM »
With current elements, we have 300 meters at closest (assuming no other maneuvers).

Target satellite: #33409
Name: SJ-6F
Perigee:   582.26 km   Apogee:   603.96 km
Velocity at perigee:  7.5734 km/sec
Satellites in range:    1

   Date     UTC Time   Norad  Name        Range/OrbSep  NdAng EphAge

 8/19/2010 14:56:50.98 36596 SJ-12          1.4/   0.2   90.6  +0.01
 8/19/2010 16:33:23.30 36596 SJ-12          0.9/   0.2   91.0  +0.08
 8/19/2010 18:09:55.44 36596 SJ-12          0.3/   0.2   92.9  +0.15
 8/19/2010 21:06:17.11 36596 SJ-12          0.6/   0.5  164.3  +0.27
 8/19/2010 21:41:31.43 36596 SJ-12          0.6/   0.5   14.4  +0.29
 8/19/2010 22:34:19.99 36596 SJ-12          0.7/   0.7  173.8  +0.33
 8/19/2010 23:27:52.67 36596 SJ-12          0.6/   0.5   11.3  +0.37
 8/20/2010  0:02:12.98 36596 SJ-12          0.7/   0.4  159.7  +0.39
 8/20/2010  1:17:35.00 36596 SJ-12          0.3/   0.2   56.5  +0.44
 8/20/2010  2:58:17.35 36596 SJ-12          0.3/   0.2   89.1  +0.51
 8/20/2010  4:35:04.68 36596 SJ-12          0.9/   0.2   90.3  +0.58
Best regards, Stephan

Offline input~2

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Re: Shijian 12 - CZ-2D launch June 15, 2010
« Reply #23 on: 08/20/2010 07:00 AM »
Igor's conjectures are now quoted in Chinese media:
http://mil.huanqiu.com/Observation/2010-08/1030731.html

Offline Stan Black

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Re: Shijian 12 - CZ-2D launch June 15, 2010
« Reply #24 on: 08/21/2010 08:53 AM »
SAST are also involved with Shenzhou docking system?

Offline input~2

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Re: Shijian 12 - CZ-2D launch June 15, 2010
« Reply #25 on: 08/22/2010 08:39 AM »
Igor's conjectures are now quoted in Chinese media:
http://mil.huanqiu.com/Observation/2010-08/1030731.html
An updated version was published to-day mentionning a few hundred meters distance between SJ-12 and SJ-6-03A
http://mil.news.sina.com.cn/s/2010-08-22/1435607269.html

Offline Liss

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Re: Shijian 12 - CZ-2D launch June 15, 2010
« Reply #26 on: 08/22/2010 12:19 PM »
Yes, also by Xinhua and Renmin Ribao -- http://news.xinhuanet.com/world/2010-08/22/c_12471182.htm and http://military.people.com.cn/GB/172467/12507837.html . The latter is still alive but the former seems to be deleted.

In fact, today we can assume that on August 19 the vehicles made physical contact and/or some exchange in energies.

« Last Edit: 08/22/2010 12:24 PM by Liss »

Offline Stephan

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Re: Shijian 12 - CZ-2D launch June 15, 2010
« Reply #27 on: 08/22/2010 03:35 PM »
Nice graph Liss, thanks.
Best regards, Stephan

Online Blackstar

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Re: Shijian 12 - CZ-2D launch June 15, 2010
« Reply #28 on: 08/23/2010 04:11 AM »
This story has not yet shown up anywhere in the western press--at least not that I can find.  If what they have done is automated rendezvous, and it is _not_ part of a manned program, then that is a significant development with potential weapons applications.  In short, it's a big story that nobody has caught onto in the western trade press.  Nothing in Aviation Week, Space News, Spaceflightnow.com, etc.

I'm not totally surprised that it has not shown up yet.  They usually wait for some kind of statement or confirmation from a western source, such as USAF.  That's a weakness of a lot of American reporting--nobody notices until there is an American angle to the story, such as a statement about what this means.
« Last Edit: 08/23/2010 04:17 AM by Blackstar »

Offline input~2

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Re: Shijian 12 - CZ-2D launch June 15, 2010
« Reply #29 on: 08/23/2010 06:19 AM »
AFAIU, the story was first written by Igor for  Russian media Interfax and Infox
http://www.infox.ru/authority/defence/2010/08/16/kitayskaya_inspyekci.phtml
then relayed by Chinese media (as indicated in my earlier posts).
As you said, apparently no western media relays still at this time..

Edit at 0733UTC
: ..just now in Japanese media:
http://www.asahi.com/international/jinmin/TKY201008230241.html
« Last Edit: 08/23/2010 07:34 AM by input~2 »

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