Re: ISS saturn transit

From: Bjoern Gimle (b_gimle@algonet.se)
Date: Mon Jan 19 2004 - 04:45:27 EST

  • Next message: Ed Davies: "Re: ISS saturn transit"

    > ...
    > Could a satellite just skimming the inside edge of the 
    > umbra still be illuminated as the Moon is during totality?
    > 
    Definitely - the shadow entry angle depends on the ascending node in relation to Sun's RA (and of course inclination and orbital height)
    
    Before and after the 'ISS marathons', near Winter or Summer solstices, a very slow shadow entry or skimming is possible near apex. For larger inclinations and/or orbit heights at "any" time.
    -----------
    I had a clear Sunday, but at 17:43 local time clouds concealed the asterisms at 7 deg N where USA 161 was due, but not alpha CVn at 9 degrees. At 16:09 the sky was too bright to locate reference stars, and at 19:19 totally overcast. Snowing now - possibly clear Wednesday evening.
     
    
    -- bjorn.gimle@tietoenator.com (office)                       --
    -- b_gimle@algonet.se (home)  http://www.algonet.se/~b_gimle   --
    -- COSPAR 5919, MALMA,    59.2615 N, 18.6206 E, 33 m         --
    -- COSPAR 5918, HAMMARBY, 59.2985 N, 18.1045 E, 44 m         --
    
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