Superbird A for tonight

From: Ed Cannon (edcannonsat@yahoo.com)
Date: Sun Jul 23 2006 - 18:33:41 EDT

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    For those who may be interested and will have favorable weather --
    
    Superbird A (89-041A, 20040) is nearing the meridian for us here 
    and so is well-placed for the Central and Eastern time zones.  
    (It's too early in the evening for Mountain and Pacific time.)
    
    Tonight its flash episode will occur when it's roughly a little
    south of a line between nu and omicron of Serpens Cauda, about 
    RA 17:30-35, Dec -13.1 (epoch 2000).  This will be about 3:25-30 
    UTC (10:25-30 PM Central Daylight Time).  Adding xi Ser just SSW 
    of omicron, the three stars will pretty nicely frame the flash 
    episode, which is easy to see with small binoculars.  It flashes 
    every 11 seconds for three or four minutes.  If you catch it 
    early, you may see it only every 22 seconds, but it will soon 
    change to every 11 seconds.  If you see it every 22 seconds, and 
    then it disappears, you caught the last part of the episode.
    
    It flashes a few minutes later for Eastern Time locations, and
    from one night to the next it flashes roughly one to two minutes
    earlier, and slightly west of its position on the previous night.
    
    Here's a similar message I sent about it a few years ago:
    
    http://www.satobs.org/seesat/Dec-2002/0025.html
    
    (In the northern hemisphere winter months, Mountain and Pacific 
    time zones also get to see it!)
    
    I believe that it was first spotted flashing in September 1996,
    but unfortunately the SeeSat-L messages from that specific week
    of that month seem to have been lost to history.  (In the past
    people have sent me copies of the archives, but none of them 
    ever included that week!)
    
    Ed Cannon - Austin, Texas, USA
    
    
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