Re: More on the UNID Seen Twice

From: Mike McCants (mmccants@io.com)
Date: Fri Jul 04 2008 - 14:45:36 UTC

  • Next message: Russell Eberst: "2008JUL2-3.OBS"

    Brad Young posted:
    
    >Could this have been USA 142 (25669, 99017A)? I notice it's been lost since
    >November 2007, and predicted track is very similar to what I saw.
    
    Yes, this seems quite likely.  This DSP has been seen to make bright
    flashes in the past.  At a range of only 1000 miles or so, it could
    make very bright flashes.
    
    I looked for this DSP about 02:38 UT last night and for your unid about
    03:25 last night.  I did not see anything.  Because the inclination was
    wrong on my unid elset and the height is quite low, my predictions were off
    more than 10 degrees.  And I was trying to observe from the city, not BCRC.
    
    Since the time discrepancy is so large, I assume that this object
    maneuvered into a slightly higher orbit some months ago.  If so, then
    my best guess based on your observations 6 days apart is:
    
    DSP F19 USA 142                 
    1 25669U 99017A   08183.11274676 0.00000000  00000-0  00000-0 0    01
    2 25669  28.5239 166.6687 7137557 107.8287 336.4576  2.32785000    08
    
    Our next chance will be Sunday evening.
    
    Mike McCants
    Austin, TX
    
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