Satellites during June total eclipse

From: Matson, Robert (ROBERT.D.MATSON@saic.com)
Date: Fri May 11 2001 - 12:58:25 PDT

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    Hi Dale,
    
    While your post may have been a little off-topic, it did
    remind me to look into the long-range possibilities of
    satellites passing through the moon's shadow that are
    visible from locations on earth in darkness.  This is
    a way for some people who aren't under the eclipse path
    to indirectly "see" it.  The favored geographic locations
    are those west of the eclipse-at-sunrise locations (west
    coast of South America and western South Pacific Ocean),
    and those east of the eclipse-at-sunset locations (Indian
    Ocean).
    
    I've never seen anyone chime in on Seesat-L from South
    America, and since these would be pre-dawn satellite events
    there, I didn't bother searching.
    
    For the Indian Ocean sunset, the nearest land that's in
    the direction of the eclipse track is the west coast of
    Australia -- unfortunately quite a ways away, meaning
    that only high altitude satellites, or satellites as low
    as 1500-km but low in the western sky (poor phase) can
    be seen experiencing eclipse.  I went ahead and checked
    for satellites dipping in and out of the lunar
    penumbra/umbra as seen from Perth.
    
    Based on current elsets, the following satellites all
    experience at least 50% solar eclipses:
    
    UFO 10 Centaur R/B
    1995-042A
    1987-079S
    Cosmos 1981 R/B
    Cosmos 2105 Deb D
    
    Of these, the brightest prior to entering the moon's penumbra
    is UFO 10 R/B.  From Perth it reaches magnitude +8.3, before
    dipping down to +9.2 (despite rising higher in the sky) and
    then reemerging at +6.9.
    
    Cosmos 2105 Deb D is closer to experiencing a full eclipse,
    but it is much dimmer, going from 11.4 to 14.7 and then back
    up to 9.3.
    
    As we get closer to eclipse date, perhaps other candidates
    will become possible.  If I have time, I will also check
    a couple sites in southeast Asia.  --Rob
    
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