Decay watch: 2000 Jun 16

From: Alan Pickup (alan@wingar.demon.co.uk)
Date: Fri Jun 16 2000 - 13:45:28 PDT

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    #11629 = 79- 99 A = Cosmos 1145
    
    This decay accelerated unexpectedly during the past day. The final two
    elsets...
    Cosmos 1145      5.0  1.5  0.0  5.4 v   14       133 x 121 km
    1 11629U 79099A   00168.48141226  .43838375 -89930-6  24745-3 0  6355
    2 11629  81.1337 279.8675 0009388 255.9033 104.0248 16.54871048131540
    Cosmos 1145      5.0  1.5  0.0  5.4 v   14       149 x 112 km
    1 11629U 79099A   00168.48138280  .25087970  00000-0  13670-3 0  6368
    2 11629  81.1352 279.8736 0029017 273.8740  85.9867 16.53379825131707
    ... have epochs only 2.5 sec apart but are surprisingly different - both
    cannot be correct and I suspect the final one is bad.
    
    I place the decay late on that same orbit, while northbound near
    Chatham Is, to the east of New Zealand at Jun 16 12:50 +-20m and 41.9 S,
    173.2 E. SpaceCom's final decay report is yet to be issued but its final
    pre-decay prediction was for decay at Jun 16 12:48 +-1h near 65.6 S,
    163.6 E.
             __________________________________________________
    
    #23502 = 95-  8 B = Cosmos 2306 r
    
    Current decay predictions:
       SpaceCom: Jun 18 16:04 +-2d        11.1 N    53.7 W
       SatEvo:   Jun 18 20:28 +-12h
    Latest elset:
    Cosmos 2306 r    7.4  2.4  0.0  5.5 v   11       213 x 192 km
    1 23502U 95008B   00168.74326169  .02463217  00000-0  73057-3 0    55
    2 23502  65.8135 285.7596 0016073 268.2785  91.6544 16.26376062296622
    
             __________________________________________________
    
    #24771 = 97- 16 D = Thaicom 3 Spelda
    
    Current decay predictions:
       SpaceCom: Jun 19 11:13 +-2d         5.4 S   178.7 W
       SatEvo:   Jun 19 08:33 +-16h
    Latest elset:
    Thaicom 3 Spelda                                 1259 x 136 km
    1 24771U 97016D   00168.71225014  .16786038  00000-0  21906-2 0  2241
    2 24771   6.5948 333.0119 0793290 227.0441 126.0317 14.58626195 47676
    
    
    More at http://www.wingar.demon.co.uk/satevo/dkwatch/ 
    
    Alan
    -- 
     Alan Pickup | COSPAR 2707:  55d53m48.7s N  3d11m51.2s W   156m asl
     Edinburgh   | Tel: +44 (0)131 477 9144     Fax: +44 (0)870 0520750
     Scotland    | SatEvo page:   http://www.wingar.demon.co.uk/satevo/
    
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    This archive was generated by hypermail 2b29 : Fri Jun 16 2000 - 13:46:52 PDT