TDF 1 (88-98A, 19621) - more one-power flashes

From: Ed Cannon (
Date: Wed Feb 09 2000 - 01:19:46 PST

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    Feb. 9 UTC (Tuesday evening local), one-power flashes were 
    again observed from TDF 1 (88-98A, 19621, a near-geosynch 
    satellite) from about 1:48:26.75 to about 1:51:25.50.  
    There may have been one-power flashes before they were 
    first observed.  The first flash seen in binoculars was at 
    about 1:47:20.25.  One-power flashes were visible about 
    every 16.34 seconds for about three minutes.  By about 
    1:59:03.20 the flashes were almost too faint for me to see 
    in 10x50 binoculars and were fading quickly.  Mike McCants 
    observed it with his 8-inch telescope and at a certain 
    point began to see double flashes, and while they were 
    visible, they changed from one being brighter to being of 
    equal brightness to the other being brighter.  A number of
    the double flashes were visible in binocs.  Although the 
    one-power flashes were about every 16.34 seconds, my 
    understanding is that that is actually half of the 
    rotational period.  The observing location was 30.314N, 
    97.866W, 280m.
    88- 98 A 00-02-09 01:52:47.4 EC  294.1 0.2   9 32.68  mag +2->inv; 18 half-per.
    On Feb. 6 one-power flashes were observed at about 1:12:48, 
    so after three nights the one-power flashes were roughly 36 
    minutes later.  The satellite drifts westwards about six 
    degrees per night.  Of course right now the Sun is moving 
    northwards a certain amount each night also.  The Feb. 6
    observing site was about 30.884N, 98.430W, about 360m.
    Thanks to Rick Baldridge for finding the earlier data on 
    this one!
    Ed Cannon - - Austin, Texas, USA
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    This archive was generated by hypermail 2b29 : Wed Feb 09 2000 - 01:21:43 PST