Decay watch: Mar 30 (Ir 11A S/D)
Alan Pickup (alan@wingar.demon.co.uk)
Tue, 30 Mar 1999 20:33:49 +0100
The decay of the Iridium 11A S/D has moved earlier...
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Object: #25580 = 98- 74 D = Iridium 11A Smart Dispenser
Decay predictions:
Source Prediction made Predicted decay at Latitude Longitude
UTC UTC deg deg
SpaceCom Mar 23 10:26 Apr 2 10:53 +-6d 50.3 S 25.0 W
SpaceCom Mar 25 22:20 Apr 1 20:34 +-4d 5.8 S 5.8 E
SpaceCom Mar 29 04:21 Apr 2 02:50 +-2d 78.2 N 70.0 W
SpaceCom Mar 30 00:40 Apr 1 19:21 +-2d 51.7 N 29.2 E
SpaceCom Mar 30 18:18 Apr 1 15:55 +-1d 70.1 S 65.9 E
SatEvo Mar 23 20:40 Apr 2 00:00 +-2.5d
SatEvo Mar 25 23:40 Apr 2 00:00 +-1.5d
SatEvo Mar 29 21:00 Apr 1 23:26 +-16h 12.1 S 38.7 W
SatEvo Mar 30 19:25 Apr 1 16:03 +-10h 22.1 S 71.8 E
Latest elset:
Irid 11A S/D 4.0 2.0 0.0 5.5 d 247 x 164 km
1 25580U 98074D 99089.65316539 .02728272 -15601-5 56556-3 0 2151
2 25580 86.2942 144.8396 0062970 116.5885 244.1686 16.25330357 15895
SatEvo prediction:
Irid 11A S/D 4.0 2.0 0.0 5.5 d 237 x 160 km
1 25580U 98074D 99090.02228851 .03547913 54976-2 61131-3 0 92153
2 25580 86.2934 144.6265 0058275 114.9749 245.6316 16.27815980 15958
Irid 11A S/D 4.0 2.0 0.0 5.5 d 200 x 145 km
1 25580U 98074D 99091.00336742 .07071440 27796-1 31379-3 0 92152
2 25580 86.2899 144.0555 0041964 110.6525 249.7980 16.37330078 16118
...
Irid 11A S/D 4.0 2.0 0.0 5.5 d 135 x 114 km
1 25580U 98074D 99091.61216497 .54451275 25573+1 26486-3 0 92156
2 25580 86.2841 143.6948 0016057 107.9255 252.2495 16.55665333 16216
Note: The epoch of yesterday's SatEvo prediction is corrected from
22:00 to 21:00 UTC above. The latest elset shows it running 14 seconds
early against that prediction.
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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/