Re: Recent obs

From: Kevin Fetter (
Date: Fri Jan 03 2003 - 23:45:11 EST

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    From: Mark Hanning-Lee <>
    Subject: Recent obs
    Date: Fri, 3 Jan 2003 18:58:37 -0800 (PST)
    2002-12-30 5:40:49 PST = 2002-12-31 13:40:49 UTC solar
    panel flare from Iridium 51 ? reached only mag 2
    instead of predicted mag -3. I find that solar panel
    flare predictions from iridflar are usually quite
    good, and in fact a solar panel flare from Iridium 35
    reached the predicted magnitude about 1 minute
    The iridium flare program outputs the predicted magnitude value based on the 
    orientation value used by the program. If the satellite is off in 
    orientation from what the program uses, the the magnitude seen can be 
    fainter or brighter.
    12/30 18:28 PST = 12-31 2:28 UTC predicted mag 4.7
    14402 Cosmos 1503 r. Candidate for a mag -1 flash 10
    deg below, 1 deg right of bottom right star of
    Cassiopeia. However the position was not quite right:
    this object was about 4 deg further left than the
    observed flare. Any other candidates?
    If you mean bottom right star of cassiopeia, as being alpha cas, I get
    Cosmos 1903 r ( 18704 ) close by.
    12/30 18:38 predicted mag 4.7 18749 Cosmos 1908 r
    passed southbound through square of Pegasus at about
    mag 2, about 1 min earlier than predicted. A good
    match except for the time discrepancy.
    Assuming you are at
    33.72900 N
    117.82200 W
    I don't get Cosmos 1908 r passing through the square of pegagus at the time 
    given, but passes left of the star Alp And which is one of the stars I call 
    in the square of pegagus.
    Now to wait for other people's results.
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