Re: Iridium 15 Delta 2 : the final orbits
Alan Pickup (alan@wingar.demon.co.uk)
Mon, 30 Mar 1998 20:49:40 +0100
Ignoring superceded elsets for both equator crossings, the final (so
far) two elsets for this object are:
Iridm 15 Delta r 5.9 2.4 0.0 5.6 d 156 x 146 km
1 24874U 97034F 98089.04730406 .14103167 -12389-5 34660-3 0 3488
2 24874 82.6958 275.1359 0007694 114.1840 246.0346 16.45678829 41110
Iridm 15 Delta r 5.9 2.4 0.0 5.6 d 146 x 138 km
1 24874U 97034F 98089.10804862 .23569813 -11149-5 33816-3 0 3505
2 24874 82.6677 275.0871 0006116 118.8859 241.3062 16.48838915 41126
These show it 5.5 and 6.7 seconds early against the "9341" SatEvo
prediction I posted yesterday. I feel sure that there would have been
one more northbound crossing...
Iridm 15 Delta r 5.9 2.4 0.0 5.6 d 132 x 127 km
1 24874U 97034F 98089.16863532 .57718399 44623+1 40210-3 0 93504
2 24874 82.6661 275.0156 0003876 118.6286 241.4103 16.53669043 41135
...with re-entry most likely near or soon after the following southbound
crossing at 146 degrees west longitude at 04:46 UTC (March 30.20).
I'd be interested to see how USSPACECOM's decay prediction(s) went.
Alan
--
Alan Pickup | COSPAR site 2707: 55d53m48.7s N 3d11m51.2s W 156m asl
Edinburgh | Home: alan@wingar.demon.co.uk +44 (0)131 477 9144
Scotland | SatEvo satellite page: http://www.wingar.demon.co.uk/satevo/