Re: Decay of Bion 11 C and Cosmos 2321 r
Alan Pickup (alan@wingar.demon.co.uk)
Sun, 9 Mar 1997 18:52:38 +0000
The Bion 11 C object is still on course for decay at about March 10.22.
The latest OIG elset is:
Bion 11 deb C 168 x 151 km
1 24706U 96073C 97068.62698098 .04733386 89114-5 18981-3 0 1491
2 24706 62.7973 314.4017 0012909 109.1517 251.0931 16.42543578 12043
which shows it 6.2 sec early against the SatEvo evolution I posted
yesterday.
A new evolution satisfies the latest 8 elsets (over 0.9d) to within
0.2 second. It continues...
Bion 11 deb C 165 x 149 km
1 24706U 96073C 97068.68782659 .05830703 28943-1 20326-3 0 91490
2 24706 62.7971 314.1474 0012230 109.1642 250.9682 16.43278008 12057
Bion 11 deb C 163 x 148 km
1 24706U 96073C 97068.74866359 .06411351 35912-1 19518-3 0 91497
2 24706 62.7969 313.8929 0011511 109.1767 250.9479 16.44021510 12064
Bion 11 deb C 160 x 146 km
1 24706U 96073C 97068.80947159 .07143318 45898-1 18775-3 0 91496
2 24706 62.7966 313.6382 0010744 109.1892 250.9271 16.44843909 12073
Bion 11 deb C 157 x 144 km
1 24706U 96073C 97068.87024730 .08098549 60998-1 18114-3 0 91495
2 24706 62.7963 313.3833 0009919 109.2017 250.9056 16.45767454 12083
Bion 11 deb C 154 x 142 km
1 24706U 96073C 97068.93098641 .09405022 85554-1 17563-3 0 91495
2 24706 62.7960 313.1282 0009020 109.2143 250.8833 16.46826048 12098
Bion 11 deb C 150 x 139 km
1 24706U 96073C 97068.99168302 .11316201 12988+0 17183-3 0 91493
2 24706 62.7956 312.8729 0008020 109.2268 250.8599 16.48075510 12105
Bion 11 deb C 145 x 136 km
1 24706U 96073C 97069.05232839 .14421210 22405+0 17107-3 0 91499
2 24706 62.7951 312.6173 0006878 109.2394 250.8350 16.49618855 12112
Bion 11 deb C 139 x 131 km
1 24706U 96073C 97069.11290810 .20512279 49254+0 17738-3 0 91493
2 24706 62.7945 312.3613 0005506 109.2520 250.8075 16.51685509 12127
Bion 11 deb C 129 x 124 km
1 24706U 96073C 97069.17339214 .39466130 20792+1 21152-3 0 91497
2 24706 62.7936 312.1048 0003651 109.2647 250.7748 16.55031459 12136
The penultimate rev takes it SE over N America from British Columbia to
Texas between 03.10 and 03.18 UT but the final one just misses the W
coast at about 04.43 UT. In fact, the uncertainty in decay is still
around one orbit (and there is little chance of seeing it from Edinburgh
this evening).
---------------------------------------------
The latest elset for #23677 = 95- 52 B (Cosmos 2321 r) is:
Cosmos 2321 r 7.4 2.4 0.0 5.5 v 228 x 178 km
1 23677U 95052B 97068.59538851 .01732340 -12337-5 45653-3 0 5804
2 23677 82.8994 303.2199 0038014 321.7443 38.1117 16.26310041 80524
This shows it running 1.3 sec late against the SatEvo evolution I posted
yesterday. Decay still looks likely on the 12th.
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 | Royal Observatory: A.Pickup@roe.ac.uk +44 (0)131 668 8224