Decay watch: 2002 September 25

From: Alan Pickup (alan@wingar.demon.co.uk)
Date: Wed Sep 25 2002 - 03:36:15 EDT

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    A summary from recent updates to my Decay Watch page:
    _____________________________________________________________________
    Object: #1808 = 65- 98 D = Alouette 2 Thor Agena B deb
    
    Final analyses:
    Source   Prediction made    Predicted decay at      Latitude Longitude
                    UTC                UTC                  deg      deg
    SpaceCom   Sep 24 00:29     Sep 23 20:14 +-1m        37.8 S     0.3 E
    SatEvo     Sep 24 21:50     Sep 23 20:07 +-20m       20.7 S     2.9 W
    
    Final elset:
    Alouette 2 ThAg deb D                            184 x 163 km
    1 01808U 65098D   02266.74342881  .44389111 -64565-6  47084-2 0  2024
    2 01808  79.7023 117.5787 0015610 229.7415 130.2636 16.37170105732583
    
    Note: I have this decaying southbound over the S Atlantic on the
    orbit following the one given by the final elset.
    _____________________________________________________________________
    Object: #11285 = 79- 20 A = InterCosmos 19
    
    Final analyses:
    Source   Prediction made    Predicted decay at      Latitude Longitude
                    UTC                UTC                  deg      deg
    SpaceCom   Sep 23 06:36     Sep 23 06:29 +-7m        16.0 N    45.0 W
    SatEvo     Sep 23 19:55     Sep 23 05:52 -15+45m     40.8 N   161.6 E
    
    Final elset:
    In-Cosmos 19     4.3  0.0  0.0  5.3 v   12       144 x 135 km
    1 11285U 79020A   02266.17676364  .25378241  19484-5  29006-3 0    41
    2 11285  73.9209 237.3828 0007511 300.0648  59.9692 16.49987790275405
    
    Note: I estimate that this decayed a little more than one orbit later
    than the epoch of the final elset, possibly northbound over the NW
    Pacific to the S of the Kamchatka Peninsula.
    _____________________________________________________________________
    Object: #27379 = 02-  6 B = EchoStar 7 Atlas Centaur rocket
    
    Notice prepared: 2002 Sep 25 07:00 UTC
    
    Final analyses:
    Source   Prediction made    Predicted decay at      Latitude Longitude
                    UTC                UTC                  deg      deg
    SpaceCom   Sep 24 21:55     Sep 24 19:01 +-7m        22.0 S   110.0 E
    SatEvo     Sep 25 07:00     Sep 24 17:07 +-10m       22.5 S   114.5 E
    
    Final elset:
    EchoStar 7 Atlas Centaur r                       1615 x 76 km
    1 27379U 02006B   02267.66922162  .16378685 -46621-4  10000-3 0   899
    2 27379  22.6029 113.8717 1065038 262.1483 135.2774 14.14178019  3006
    
    Note: This decayed very quickly indeed when the perigee was forced
    down by luni-solar perturbations; only three days before the apogee
    was out at 28,970 km. The drag term in the final elset is a gross
    underestimate, with the true value likely to have been in excess of
    10.0 rather than the 0.16378685 given. My estimate is that it decayed
    in the vicinity of perigee on that orbit, near North West Cape,
    Australia.
    _____________________________________________________________________
    
    
    Alan
    -- 
    Alan Pickup / COSPAR 2707:  55.8968N   3.1989W   +208m   (WGS84 datum)
    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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