78-35B spectacular

From: Ed Cannon (ecannon@mail.utexas.edu)
Date: Thu Apr 27 2000 - 02:37:19 PDT

  • Next message: michael.waterman@gecm.com: "Progress observed"

    While waiting for the next (in-shadow) pass of the decaying
    GPS Delta Rk (23834, 96-19B), due in about 15 minutes, I
    decided to report a spectacular binocular flasher that I 
    observed last night, Intelsat 4A6 Rk (10779):
    
    78- 35 B 00-04-27 02:23:44   EC  100.1 0.2  22  4.55  F'F'f'mag +4->inv 
    
    The flash pattern, truncating the times to integers just for
    simplicity, was 4-1-3 4-1-3 etc. seconds, all three about 
    equal brightness.  So I wasn't completely certain whether to 
    report its period as 4.55 or 9.10 seconds.  The maxima are
    very fast and some might have been +3.5.
    
    Didn't see any sign of 23834 on the previous pass, which 
    was predicted to go very near our zenith.  It's several 
    miles lower this time, but still in shadow.  Next orbit is 
    in sunlight but in twilight also.
    
    Ed Cannon - ecannon@mail.utexas.edu - Austin, Texas, USA
    
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