Re: Decay watch update: December 26

Björn Gimle (b_gimle@algonet.se)
Sun, 27 Dec 1998 10:33:17 +0100

> 25120   97- 84 J   Orbcomm 9 Pegasus r   December 28.35+-0.4d
> 23539   95- 16 D   Brazilsat B2 Spelda   December 29.1 +-0.7d
> 25572   98- 73 B   MCO Delta 2 r1        December 30.3 +-0.9d


With elsets 98361.16, 98361.30 and 98361.20 resp., SatEvo gives

25120 Dec. 28.58
23539 Dec. 29.14
25572 Dec. 29.69

All ndot2 values have been checked/corrected from a curve fit.

Some evouluted elsets:

Orbc9 Pegasus r  1.3  1.0  0.0  7.0 d            166 x 149 km
1 25120U 97084J   98362.38596336  .18823261  25381+0  70615-3 0 94343
2 25120  44.9385 259.8383 0012684 180.9244 179.0732 16.43044964 57194
Orbc9 Pegasus r  1.3  1.0  0.0  7.0 d            118 x 114 km
1 25120U 97084J   98362.56776307 2.29944324  50000+2  67812-3 0 94342
2 25120  44.9355 258.6521 0002671 182.1858 177.8130 16.59007860 57225

Brazilsat B2 Spelda                              656 x 125 km
1 23539U 95016D   98362.93108770 1.06107457  94973+0  44048-2 0 91283
2 23539   6.5719  78.0194 0391952 341.2282  17.3658 15.59125479569044
Brazilsat B2 Spelda                              311 x 124 km
1 23539U 95016D   98363.12002630 3.19583696  15874+2  72917-2 0 91283
2 23539   6.5696  76.4371 0141594 344.3616  15.2054 16.20696402569075

MCO Delta 2 r1   5.9  2.4  0.0  5.0 d            241 x 142 km
1 25572U 98073B   98363.44088343  .21151934  18187+0  10833-2 0 90651
2 25572  23.8787  48.9670 0075766 113.7098 247.0870 16.30373629  2743
MCO Delta 2 r1   5.9  2.4  0.0  5.0 d            187 x 135 km
1 25572U 98073B   98363.62382965  .54230290  22797+1  11683-2 0 90654
2 25572  23.8768  47.4526 0039613 116.3437 244.0637 16.41864550  2774