Updated 09023B elements

From: Ted Molczan (ssl3molcz@rogers.com)
Date: Thu Jul 30 2009 - 14:16:05 UTC

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    Russell Eberst and Mike Waterman contributed observations used to determine the
    following element sets.
    
    The following is a good representation of the orbit's recent history, but
    probably will result in late predictions tonight.
    
    STSS-ATRR r                                              132 X 271 km
    1 34904U 09023B   09211.03342556  .04013894  00000-0  13889-3 0    09
    2 34904 112.5165 116.7424 0105001 226.7294 132.5108 16.25984734   321
    Arc 20090728.08-0730.05 WRMS resid 0.240 totl 0.063 xtrk 
    
    Using Satevo 0.51, I estimate decay tomorrow (July 31), before 10 UTC.
    
    For tonight's first pass over Western Europe, I offer a range of possibilities,
    generated using Satevo, based on various assumptions:
    
    #1 Decay Jul 21.40
    1 34904U 09023B   09212.07583947  .10427059  00000-0  23880-3 0 90005
    2 34904 112.5123 120.3318 0056196 225.4787 134.0608 16.38383338   498
    
    #2 Decay Jul 21.39
    1 34904U 09023B   09212.07491364  .12900995  00000-0  19071-3 0 90000
    2 34904 112.5112 120.3360 0053917 225.4770 134.0812 16.41676841   498
    
    #3 Decay Jul 21.21
    1 34904U 09023B   09212.07397620  .23527722  00000-0  23427-3 0 90005
    2 34904 112.5095 120.3404 0040380 225.4753 134.1939 16.46744870   492
    
    Relative the historical epoch 09211 elset, elset #1 is about 1 min earlier, #2
    is about 2.5 min earlier, and #3 is about 4 min earlier.
    
    Observers near 55 N have a fairly good view of the orbit; observers near 50 N
    have somewhat more challenging passes, in terms of illuminated elevation and
    phase angle.
    
    Ted Molczan
    
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