Decay watch: 2002 January 28

From: Alan Pickup (alan@wingar.demon.co.uk)
Date: Mon Jan 28 2002 - 15:21:26 EST

  • Next message: Leo Barhorst: "Obs Jan 28"

    A summary of the updated notices on my Decay Watch page - see the full 
    notices for the missing predicted elsets:
    
    _____________________________________________________________________
    Object: #21987 = 92- 31 A = EUVE
    
    Decay predictions:
    Source   Prediction made    Predicted decay at      Latitude Longitude
                    UTC                UTC                  deg      deg
    SpaceCom   Jan 27 15:22     Jan 31 02:51 +-2d        27.8 N    50.9 W
    SatEvo     Jan 28 19:45     Jan 31 09:01 +-18h
    
    Latest elset:
    EUVE             3.0  0.0  0.0  6.0 d   19       212 x 207 km
    1 21987U 92031A   02028.65993027  .01974660 -75522-5  69792-3 0  7720
    2 21987  28.4261 166.4049 0003609  31.5016 328.5747 16.23871895538604
    _____________________________________________________________________
    Object: #22013 = 92- 38 B = Sampex Scout rocket
    
    Final decay analyses:
    Source   Prediction made    Predicted decay at      Latitude Longitude
                    UTC                UTC                  deg      deg
    SpaceCom   Jan 28 06:27     Jan 28 02:28 +-22m        8.2 S    70.0 E
    SatEvo     Jan 28 19:25     Jan 28 02:26 +-25m       24.4 S    71.6 E
    
    Final elset:
    Sampex r         3.0  0.0  0.0  6.0 d 0.89       140 x 130 km
    1 22013U 92038B   02028.06719327  .34186820 -63272-6  31114-3 0   620
    2 22013  81.5930  51.5517 0007773 170.2329 190.9956 16.51562329524514
    
    Note: I have this decaying southbound over the Indian Ocean.
    _____________________________________________________________________
    Object: #24947 = 97- 51 D = Iridium 27 tum
    
    Decay predictions:
    Source   Prediction made    Predicted decay at      Latitude Longitude
                    UTC                UTC                  deg      deg
    SpaceCom   Jan 28 11:44     Feb  1 10:23 +-2d        15.1 S    38.2 W
    SatEvo     Jan 28 19:50     Feb  1 11:14 +-1.2d
    
    Latest elset:
    Iridium 27 tum   4.0  1.8  0.0  6.5 d  7.6       247 x 245 km
    1 24947U 97051D   02028.57271456  .01807299  26509-2  20121-2 0  1874
    2 24947  86.5784  68.8789 0001461 220.9736 139.1406 16.10235697242397
    _____________________________________________________________________
    Object: #26872 = 01- 31 B = GOES 12 Atlas 2a rocket
    
    Decay predictions:
    Source   Prediction made    Predicted decay at      Latitude Longitude
                    UTC                UTC                  deg      deg
    SpaceCom   Jan 28 15:44     Jan 29 03:52 +-8h         5.1 N    72.0 W
    SatEvo     Jan 28 20:00     Jan 29 03:46 +-4h         6.1 N    69.5 W
    
    Latest elset:
    GOES 12 Atlas 2a r                               1814 x 116 km
    1 26872U 01031B   02028.61608515  .99999999 -67697-5  51836-2 0  1343
    2 26872  20.1473 102.0391 1156207  31.6804 337.4991 13.79783889  5176
    
    SatEvo prediction:
    GOES 12 Atlas 2a r                               1234 x 105 km
    1 26872U 01031B   02028.89613965 1.97485489  16792+1  43625-2 0 91341
    2 26872  20.1326 100.2890 0800895  34.8560 330.1395 14.67340595  5213
    GOES 12 Atlas 2a r                               1052 x 103 km
    1 26872U 01031B   02028.96336888 2.40412117  27213+1  43831-2 0 91341
    2 26872  20.1290  99.8301 0682395  35.6888 328.6888 14.96522478  5222
    GOES 12 Atlas 2a r                               835 x 100 km
    1 26872U 01031B   02029.02911868 3.22802090  64626+1  45582-2 0 91344
    2 26872  20.1231  99.3598 0536187  36.5424 327.0006 15.32815221  5231
    GOES 12 Atlas 2a r                               524 x 96 km
    1 26872U 01031B   02029.09293934 6.14592376  33539+2  54125-2 0 91348
    2 26872  20.1170  98.8738 0320010  37.4245 324.7621 15.87208697  5241
    
    Note: I calculate that this will decay near the end of the final
    SatEvo-predicted orbit above. This places it near the border between
    Colombia and Venezuela and in close agreement with SpaceCom's
    prediction.
    _____________________________________________________________________
    Object: #26889 = 01- 35 B = SimpleSat 1
    
    Decay predictions:
    Source   Prediction made    Predicted decay at      Latitude Longitude
                    UTC                UTC                  deg      deg
    SpaceCom   Jan 28 07:23     Jan 30 07:32 +-1d        51.6 S    31.5 E
    SatEvo     Jan 28 20:15     Jan 30 08:05 +-12h
    
    Latest elset:
    SimpleSat 1      1.0  0.0  0.0  7.5 d 0.23       199 x 196 km
    1 26889U 01035B   02028.43508215  .02696830  12088-4  67834-3 0  2689
    2 26889  51.6130  17.0088 0002016   7.7798 352.3151 16.28226026 26870
    _____________________________________________________________________
    
    
    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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    This archive was generated by hypermail 2b29 : Mon Jan 28 2002 - 15:27:35 EST