Decay watch: 2002 August 19

From: Alan Pickup (alan@wingar.demon.co.uk)
Date: Mon Aug 19 2002 - 17:44:04 EDT

  • Next message: paul: "8305PG 20aug 02h UT"

    Meteor 1-2 just might decay over Europe about 24 hours from now. The 
    following is taken from my Decay Watch page.
    _____________________________________________________________________
    Object: #4119 = 69- 84 A = Meteor 1-2
    
    Decay predictions:
    Source   Prediction made    Predicted decay at      Latitude Longitude
                    UTC                UTC                  deg      deg
    SpaceCom   Aug 19 04:47     Aug 21 02:56 +-1d        76.0 S   136.1 E
    SatEvo     Aug 19 21:25     Aug 20 21:21 +-7h        21.9 S     2.7 W
    
    Latest elset:
    Meteor 1-2       5.0  1.5  0.0  5.8 v   12       192 x 177 km
    1 04119U 69084A   02231.73476128  .04048431 -95274-6  67581-3 0  5633
    2 04119  81.1247 291.7492 0011338 254.4475 105.5538 16.33135177721128
    
    SatEvo prediction: See Decay Watch page.
    (..ends)
    Meteor 1-2       5.0  1.5  0.0  5.8 v   12       140 x 134 km
    1 04119U 69084A   02232.77245427  .29773864  88655+0  31711-3 0 95638
    2 04119  81.1188 290.2929 0004719 250.2910 109.6581 16.50764906721292
    Meteor 1-2       5.0  1.5  0.0  5.8 v   12       124 x 120 km
    1 04119U 69084A   02232.83298991  .91513108  95982+1  42945-3 0 95634
    2 04119  81.1174 290.2062 0002871 250.0438 109.9253 16.56587909721308
    
    Note: My prediction is for this to decay northbound over the South
    Atlantic near the end of the final SatEvo-predicted rev above. If it
    continues in orbit, it will cross Europe from near Marseille,
    France, at 21:37 UTC to Bremen, Germany, at 21:39 and just E of
    Oslo, Norway, at 21:41. The uncertainty is several orbits and
    SpaceCom estimates a later decay.
    _____________________________________________________________________
    
    Object: #21122 = 91- 10 E = Cosmos 2133 aux motor
    
    Final analyses:
    Source   Prediction made    Predicted decay at      Latitude Longitude
                    UTC                UTC                  deg      deg
    SpaceCom   Aug 18 13:00     Aug 18 10:49 +-1m        39.0 S   117.6 E
    SatEvo     Aug 18 14:20     Aug 18 09:22 -5+90m      45.7 S   163.6 E
    
    Final elset:
    Cosmos 2133 aux motor                            260 x 96 km
    1 21122U 91010E   02230.34616819  .89384500  99484-5  48476-3 0   443
    2 21122  46.5279  16.1768 0125298 229.3381 129.0397 16.35459062120136
    
    Note: The final elset shows it running 59 sec late against yesterday's
    prediction. I have this decaying following perigee on the above orbit,
    approaching southern apex near the South Island of New Zealand.
    It is possible that it survived to decay almost one rev later, in line
    with the SpaceCom analysis.
    _____________________________________________________________________
    
    
    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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