Decay watch: Dec 11

Alan Pickup (alan@wingar.demon.co.uk)
Sat, 11 Dec 1999 19:29:54 +0000

Other commitments meant that I was unable to post Decay Watch updates
yesterday for #25088 and #25923, both of which are now down. More
details are on...
      http://www.wingar.demon.co.uk/satevo/dkwatch/

#25088 = 97- 79 A = Cosmos 2347
  I show this decay at Dec 11 12:43 UTC +-30m, near 14.6 N, 2.4 W.
SpaceCom has Dec 11 12:35 +-1h at 34.1 S, 24.4 W. These points are on
different sides of a northbound equator crossing that occurred S of Cote
d'Ivoire, W Africa. My SatEvo-predicted elset for the final full rev is
Cosmos 2347      8.0  3.0  0.0  3.5 v 22.5       146 x 118 km
1 25088U 97079A   99345.46675542  .64675185  38057+1  40453-3 0 92170
2 25088  64.9732 261.4585 0021496 249.1281 110.6415 16.52648422113739

#25923 = 99- 52 B = Telstar 7 Ariane 44LP r
  SpaceCom lost this for almost 2 days and finally put the decay at Dec
10 22:16 +-1m at 3.5 N, 15.7 W. I show the rocket surviving for another
couple of orbits with re-entry at Dec 11 02:27 +-2h near 6.3 S, 40.6 E.
The final equator crossing may be represented by the following SatEvo-
predicted elset...
Telstar 7 Ariane 44LP r                          1175 x 84 km
1 25923U 99052B   99345.05265070 9.99999999  50000+2  94973-2 0 90947
2 25923   6.3036 249.7591 0778406 236.3986 115.9305 14.79859596  1274
...though it is also very possible that it re-entered just after perigee
on the preceding orbit at about 00:52 UTC.

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/

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