Spacenet 2, USA 102, Nadezhda 7 Rk, etc.

From: Ed Cannon (ecannon@mail.utexas.edu)
Date: Mon Dec 16 2002 - 05:24:25 EST

  • Next message: Greg Roberts: "Obs 15/16 Dec 2002"

    Spacenet 2 (15385, 84-114A).  This is a "flashing 
    geosynch".  Mike McCants found it flashing last night.  
    To my knowledge, the only time it has been observed 
    previously was by Steve LaLumondiere in May 2000 
    (reported to SeeSat).  The flash period is about 96.40 
    (or twice that?).  It had some interesting variations 
    in the brightness and timing of the maxima, including 
    at least a couple of double maxima.  I don't know when
    to look for it tonight (but it may be cloudy anyway).
    
    USA 102 (23031, 94-017B) can be spectacular, like a
    flashing Iridium (though I didn't see any like that 
    last night).  Its flash period seems to be about 6.2 
    seconds, but half-period secondary maxima were visible.
    
    Nadezhda 7 Rk (27535, 02-046B).  I didn't have a 
    prediction; Mike told me where to look.  Its flash 
    period was about 6.6 seconds.
    
    I saw Intelsat 502 Rk (12446, 80-098B, a Centaur) by 
    accident while trying unsuccessfully to to see ETS 6.
    At a range of over 4,000 km, its brightest maxima 
    were about +5.5 I think.
    
    UFO 2 Rk (22788, 93-056B, or UHF F/O F2 Rk) was closer 
    than several nights ago and its maxima were at least 
    +2.5, easy to see without binoculars.
    
    I watched Superbird A (20040, 89-041A) from 3:46:41.1
    to 3:53:39.0.  
    
    Observing site was BCRC:  30.315N, 97.866W, 280m.
    
    Here are PPAS reports:
    
    80- 98 B 02-12-16 02:31:53   EC  206.3 0.6  13 15.87  +5.5->inv
    84-114 A 02-12-16 03:15:20   EC 2410.1 0.3  25 96.40  +5.5->inv
    94- 17 B 02-12-16 01:07:21   EC  105.6 0.3  17  6.21  
    02- 46 B 02-12-16 01:59:26   EC   78.9 0.4  12  6.58  +4.5->inv
    
    A few nights ago Mike found 90003, a flashing geosynch
    of unknown identity, with maxima at least +6 (I think 
    he said.)  I'm not sure what time he saw it that night;
    last night it wasn't that bright, but it may have been
    an hour later.  The flash period is about 21.1 seconds, 
    but some secondary and tertiary maxima are visible.
    
    Ed Cannon - ecannon@mail.utexas.edu - Austin, Texas, USA
    
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