Yuri 3A (90-077A)

From: Ed Cannon (ecannon@mail.utexas.edu)
Date: Tue Feb 15 2005 - 04:42:33 EST

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    Yuri 3A (90-077A, 20771) was visible flashing for at least an 
    hour, 3:41-4:39 UTC (RA 8:25-9:23).  Who knows how long it
    was flashing before and/or after that?  Most of the brightest
    flashes (magnitude +3) were every 186 seconds, but every so 
    often two in a row would be bright (i.e., every 93 seconds).  
    It's really more complicated than that.  There seemed to be a
    repetition every 11 short cycles (11 times 93 seconds).
    Fleetsatcom 3 (80-004A, 11669) was observed from 3:21-33 (RA
    7:03-15).  Brightest maybe +5.5.  This one alternates, about
    52.75 and 10.65 (more rapid rotation than some months ago).
    It might have been flashing before and may have continued 
    after when it was observed.
    A bright flash (mag +1 or brighter) was seen near Hubble; the 
    object was northbound, and the best match (so far) appears to 
    be Cosmos 1992 Rk (89-005B, 19770), in time, position, and
    direction of travel.
    The above were all 2005 Feb 15 UTC; the location was BCRC,
    30.315N, 97.866W, 280m.
    Ed Cannon - ecannon@mail.utexas.edu - Austin, Texas, USA
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