Author Topic: LIVE: Soyuz-2-1A – Foton-M № 4 – 18th July 2014 (20:50 UTC)  (Read 70541 times)

Offline Nicolas PILLET

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Nicolas PILLET
Kosmonavtika : The French site on Russian Space

Offline jcm

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Two debris objects have been cataloged associated with the Foton-M4 mission.

The final orbit of Foton-M4 on Sep 1 was 247 x 524 km. Objects 40150 and 40151
were in 301 x 793 km and 529 x 654 km orbits on Sep 16. This corresponds to
ejections in the 50 to 100 m/s range.

If this were an old style Foton with a Zenit service module I'd assume these were the PTDU deorbit motor cover halves,
which were ejected during the deorbit burn with a posigrade delta-V. But with the new service module,
which we have been assuming is a liquid propulsion system of Yantar type, I don't know what would be ejected
in this way.
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Jonathan McDowell
http://planet4589.org

Offline Phillip Clark

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Jonathan, these two objects appeared in the Sat Sit Report on Monday but the first TLEs only appeared yesterday: I will drop a line to Space-Track to see if we can get the older TLEs released.

Bion-M was essentially the same design and that didn't leave any new objects in orbit when it came down.   Could the Foton-M objects be discarded experiment packages that were specific to this flight?
I've always been crazy but it's kept me from going insane - WJ.

Offline Danderman

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Found this web page with loads of processing photos inside the MiK:

http://seleste-rusa.livejournal.com/819690.html
« Last Edit: 03/16/2016 10:32 pm by Danderman »

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