Decay watch: 2000 Sep 6

From: Alan Pickup (alan@wingar.demon.co.uk)
Date: Wed Sep 06 2000 - 14:33:39 PDT

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    See my Decay Watch page for more info concerning...
    
    _____________________________________________________________________
    
    #10362 = 77- 91 A = Cosmos 955
    
    Current decay estimates:
       SpaceCom: Sep  7 18:36 +-1d        76.5 S    77.2 W
       SatEvo:   Sep  7 15:58 +-6h         0.0       1.8 E
    
    Latest elset:
    Cosmos 955       5.0  1.5  0.0  5.4 v   24       195 x 184 km
    1 10362U 77091A   00250.56592959  .03527616 -94316-6  72981-3 0  6046
    2 10362  81.1749 229.9143 0008461 199.6192 160.4819 16.31037651261595
    
    I show this decaying near the end of the final predicted orbit...
    
    Cosmos 955       5.0  1.5  0.0  5.4 v   24       140 x 136 km
    1 10362U 77091A   00251.60477098  .42326814  18181+1  48164-3 0 96042
    2 10362  81.1686 228.4683 0002965 195.4626 164.5283 16.50481207261767
    
    ... possibly northbound over the Atlantic as it begins to track across
    NW Africa in daylight from Lagos, Nigeria, at 15:59 UTC to Constantine,
    Alferia, at 16:07. It would continue across Europe from SE France
    (16:09) to Hamburg, Germany, at 16:11 and N Sweden at 16:15.
    _____________________________________________________________________
    
    #26484 = 00- 51 B = Sirius 2 Proton r
    
    Final decay estimates:
       SpaceCom: Sep  6 02:17 +-7m        16.0 N    44.3 W
       SatEvo:   Sep  6 02:17 +-10m       19.2 N    45.8 W
    
    Final elset:
    Sirius 2 Proton r                                122 x 119 km
    1 26484U 0051B    00250.06880200  .35629325  82147-5  14424-3 0    82
    2 26484  64.8732 163.4609 0002206 217.9704 143.4338 16.57229087   110
    
    Like SpaceCom, I show this decaying southbound over the Atlantic before
    the southbound equator crossing on the orbit given by the final elset.
    _____________________________________________________________________
    
    #26485 = 00- 51 C = Sirius 2 Proton platform
    
    Final decay estimates:
       SpaceCom: Sep  5 15:43 +-53m       34.3 N    35.3 W
       SatEvo:   Sep  5 16:11 +-90m        0.0     117.3 E
    
    Final elset:
    Sirius 2 Proton platform                         153 x 144 km
    1 26485U 0051C    00249.58316604  .29822857  77893-5  60361-3 0    47
    2 26485  64.8260 165.3624 0007357  66.5911 293.6243 16.46596809    36
    
    The five elsets published for this object are all for the same orbit. My
    estimate for its decay while southbound over Borneo is therefore
    uncertain.
    _____________________________________________________________________
    
    
    Alan
    -- 
    Alan Pickup / COSPAR 2707:  55d53m48.7s N   3d11m51.2s W      156m asl
    Edinburgh  / SatEvo & elsets:    http://www.wingar.demon.co.uk/satevo/
    Scotland  / Decay Watch: http://www.wingar.demon.co.uk/satevo/dkwatch/
    
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    This archive was generated by hypermail 2b29 : Wed Sep 06 2000 - 14:35:43 PDT