USA 81 - Flasher?

From: Bruce MacDonald (bgmacdonald@tesco.net)
Date: Sun Nov 09 2003 - 11:45:08 EST

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     On Friday 7 November, I set up to observe the 18:09 UTC pass of USA 81
     (21949, 92-023A) which is on Daniel Deak's flasher list.  Observing with
     7x50 binoculars in strong light from the waxing gibbous Moon, I detected no
    discernible flashing until very late in the pass at around 18:13, and even
    then I am not sure I saw any.
    
    Magnitude seemed stable at around 5.5 at culmination (my estimate).  Does
    the flashing behaviour of this sat depend on the sun/observer geometry?  Or
    was I mistaking another sat for this one?
    
     Bruce
    
     Devizes UK 51.3440 N 1.9849 W
    
    
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