Re: TJM obs of 2010 Oct 20 UTC

From: Mike McCants (mmccants@io.com)
Date: Wed Oct 20 2010 - 16:44:57 UTC

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    Ted posted:
    
    >Kevin Fetter's UNID of 2010 Oct 19 UTC (10792A) was spotted easily,
    >running ~178 s early and ~0.1 deg low, relative my 11.5358 rev/d elements.
    >Perigee must be well below 160 km.
    
    This object will be tracked (I hope) as object 90086:
    
    Unknown 101019
    1 90086U 10792A   10293.40767197  .01192144  00000-0  74211-3 0    01
    2 90086  26.3644  16.4586 2095633 273.6405  94.8735 11.57122578    00
    
    There have been only two passes observed, so it is not strictly valid
    to determine a drag term.  But the observations indicate that the
    orbit shape changed quite a bit in only one day, so elcor computed the large
    drag term in the above elset.  So the uncertainty for tomorrow morning's
    passes is about +/- 30 seconds.
    
    This object is fairly large - it appears to be about magnitude 6.5 or so
    at a range of 2000 miles.
    
    Mike McCants
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