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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