Re: 27544 (02-048E) decay?

From: Alan Pickup (alan@wingar.demon.co.uk)
Date: Sat Nov 09 2002 - 06:19:09 EST

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    Ed Cannon writes...
    >I think that this must have decayed already, but I can't
    >find any prediction or decay report, and OIG just gave
    >me these elements with no mention of decay:
    >
    >SL-12 DEB
    >1 27544U 02048E   02305.29820762 -.00003965  12537-4  00000+0 0   123
    >2 27544  51.5302  32.2746 0041880 135.8867 262.8169 16.44146861  1773
    >SL-12 DEB
    >1 27544U 02048E   02304.73755048  .23469309  95189-5  22449-2 0   115
    >2 27544  51.5441  35.3351 0158721 151.5054 210.4698 16.08551073  1680
     >...
    
    Yes - it has decayed. The negative ndot2 term (-0.00003965) in the final 
    elset meant that it was missed in my initial check for recent decayers. 
    In fact, I think that possibly a more realistic elset for that rev is:
    Integral Proton deb E                            184 x 125 km
    1 27544U 02048E   02305.29200827 1.14146380  82062+1  13589-2 0 90114
    2 27544  51.5339  32.2768 0045784 153.8022 206.4301 16.44315884  1772
    ...with decay beyond the perigee on that orbit, possibly at ~07:46 UTC 
    (on November 1) southbound near 6.3 deg S, 60.2 deg E. It is interesting 
    that there was a pass across Europe shortly before this, from Paris at 
    07:27 to Athens at 07:32.
    
    
    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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