Intelsat 512 (85-087A, 16101)?

From: Ed Cannon (ecannon@mail.utexas.edu)
Date: Thu Aug 10 2000 - 09:13:45 PDT

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    One evening in June I saw two flashing high-altitude objects in the 
    field of view of my binoculars and concluded that they could have been 
    Hipparcos and Intelsat 512 (85-087A, 16101).  Intelsat 512 has now 
    risen in the east for the Americas, and last night when I looked for 
    it I saw six bright flashes -- but after that it disappeared!  Mike 
    McCants had been observing another object, and by the time, just three 
    or four minutes later, that he aimed his telescope at it, he was not 
    able to find it.  It went from possibly +3.5 flashes to fainter than 
    +11.5 or so (lots of moonlight, of course) in just a few minutes.  So 
    it must be an object like Superbird A and others (e.g., 90007) which 
    have only a brief flash episode each night.  The six flashes that I 
    saw were just before and after 3:00 UTC, August 10.  The flash period 
    was about 40 seconds (compared with about 39 on the object in early 
    June).  
    
    Observing location was 30.314N, 97.866W, 280m.
    
    Ed Cannon - ecannon@mail.utexas.edu - Austin, Texas, USA
    
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