Update on Gorizont 17

From: Stephen D LaLumondiere (Stephen.D.LaLumondiere@aero.org)
Date: Sat Mar 16 2002 - 19:01:05 EST

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    Hi all.
    
    Just purchased a new pair of Fujinon (FMT-SX) 16x70s, and had to try them 
    out.  Was easily able to locate Gorizont 17 (1989-004A) the last several 
    nights.  Rob Matson discussed the acceleration of this satellite in a 
    previous posting:
    
    http://www.satobs.org/seesat/Jan-2001/0400.html
    
    Between 1998/03/23 and 2002/03/15 (1453 days) the period has decreased by 
    7.24 seconds, or 0.005 seconds per day.  From the data, one can observe a 
    sharp decrease in the flash period during the winter months, while there 
    is very little change during the summer months (June-July).
    
    Most recent obs in PPAS format:
    89-  4 A 02-03-11 04:21      SDL       0.2  50 38.49  dT=1924.4
    89-  4 A 02-03-12 04:41      SDL       0.2  52 38.49  dT=2001.5
    89-  4 A 02-03-15 05:00      SDL       0.2  60 38.48  dT=2308.8
    
    Best, and clear dark skies.
    Steve LaLumondiere
    
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