Decay watch: September 29

Alan Pickup (alan@wingar.demon.co.uk)
Wed, 29 Sep 1999 21:52:33 +0100

My Decay Watch page at
      http://www.wingar.demon.co.uk/satevo/dkwatch/
has been updated with:

- My final note on the decay of #25920, the Ikonos Orbit Adjust Module.
I show this at September 28 19:39 UTC -15m+80m, while SpaceCom has it at
20:52 +-13m. The small uncertainty in SpaceCom's decay point implies
that there were further sightings of this, but no later elsets have
appeared. There was a northbound pass (in shadow) across Europe at
~20:30 UTC but I have no reports of it being seen -  and I saw nothing
through cloud from Edinburgh. I show decay before this time, perhaps
southbound over the Pacific, and not long after perigee in this SatEvo-
predicted orbit:
Ikonos OrbAdjMod                                 173 x 111 km
1 25920U 99051B   99271.78427620  .81204933  36486+1  54526-3 0 90291
2 25920  97.6989 337.5422 0047503 184.5965 175.3597 16.49132839   633
As SpaceCom suggests, it may have survived well into the following
orbit.

- My predictions for the decays of the just-launched Resurs F-1M Soyuz
rocket (#25930) for September 30 02:53 UTC +-3h and of the Raduga 15
auxiliary motor (#15076) for October 4 20:49 UTC +-1.5d


Alan
-- 
 Alan Pickup | COSPAR 2707:  55d53m48.7s N  3d11m51.2s W   156m asl
 Edinburgh   | Tel: +44 (0)131 477 9144     Fax: +44 (0)870 0520750
 Scotland    | SatEvo page:   http://www.wingar.demon.co.uk/satevo/