Decay watch: February 18
Alan Pickup (alan@wingar.demon.co.uk)
Thu, 18 Feb 1999 20:27:00 +0000
Five further SpaceCom decay warnings for #13103 but only one published
elset during the last 30 hours of its life...
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Object: #13103 = 82- 6 C = OPS 2849 deb
Decay predictions:
Source Prediction made Predicted decay at Latitude Longitude
UTC UTC deg deg
SpaceCom Feb 12 13:04 Feb 19 10:40 +-4d 54.5 S 91.1 E
SpaceCom Feb 14 22:09 Feb 18 19:47 +-2d 33.5 S 36.1 W
SpaceCom Feb 15 20:59 Feb 18 21:26 +-2d 74.8 S 84.4 W
SpaceCom Feb 16 20:55 Feb 18 20:46 +-1d 82.3 N 29.6 E
SpaceCom Feb 18 01:06 Feb 18 17:59 +-11h 49.1 N 4.4 E
SpaceCom Feb 18 03:09 Feb 18 14:09 +-7h 81.0 S 1.9 W
SpaceCom Feb 18 09:39 Feb 18 15:04 +-5h 48.4 N 48.1 E
SpaceCom Feb 18 12:32 Feb 18 14:40 +-34m 30.7 N 138.7 W
SpaceCom Feb 18 19:13 Feb 18 14:40 +-34m 30.6 N 138.6 W
SatEvo Feb 12 19:40 Feb 21.1 +-3d
SatEvo Feb 17 20:35 Feb 18 11:32 +-10h 0.0 88.5 E
SatEvo Feb 18 18:30 Feb 18 12:29 +-1h 52.2 S 67.5 E
Final elset:
OPS 2849 deb 157 x 148 km
1 13103U 82006C 99049.48102937 .16007018 00000-0 44919-3 0 757
2 13103 97.4705 232.3505 0006512 298.8251 61.3049 16.45132538212715
Note: I believe that this final elset is for its last orbit, though the
drag term appears to be less than half of that expected. It might have
reached the following equator crossing at 13:00 UTC but I do not think
it could have survived until SpaceCom's decay time more than one orbit
later still.
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Alan
--
Alan Pickup | COSPAR 2707: 55d53m48.7s N 3d11m51.2s W 156m asl
Edinburgh | Home: alan@wingar.demon.co.uk +44 (0)131 477 9144
Scotland | SatEvo page: http://www.wingar.demon.co.uk/satevo/