RE: Unk Flare

From: Matson, Robert (ROBERT.D.MATSON@saic.com)
Date: Thu Apr 12 2001 - 11:43:21 PDT

  • Next message: Leo Barhorst: "Obs april 12"

    Hi Jari,
    
    > As i looked outside to see if the sky had cleared just before a
    > pass by ISS, i noted a bright object flaring at 03:19:34 +/- 3 sec
    > 12 Apr UTC. Approx Az 130 deg El 25 deg. Mag -3 and it lasted
    > for a couple of seconds but there didn't appear to be any apparent
    > motion to it unlike an Iridium flare.
    
    Cosmos 1151 (#11671, 80-005A) was in the vicinity, but I would
    think it would have been moving enough for you to detect its
    motion over 3 seconds.
    
    Cosmos 2255 (#, 93-038D) was also nearby (but supposedly is
    quite small).  Don't know if there's anything specular of
    sufficient area on either of these satellite that would
    account for a -3 glint -- doesn't take a lot of surface
    area, though.  Cosmos 2255 was at twice the range of Cosmos 1151,
    and may have been traveling slowly enough to appear stationary
    over a 3-second period.
    
    Best,
    Rob
    
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