Updated NanoSail-D elements; rapid flashing observed

From: Ted Molczan (ssl3molcz@rogers.com)
Date: Sun May 22 2011 - 20:54:32 UTC

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    The following elements derive from Russell Eberst's positional observations of NanoSail-D, on May 17, 19, and 21 UTC:
    
    NanoSail-D                                               562 X 603 km
    1 37361U 10062L   11141.00077690  .00066662  00000-0  61726-2 0    09
    2 37361  71.9624  95.9493 0029540 237.3127 122.5194 14.94109411    03
    Arc 201105170-0521.02 WRMS resid 0.048 totl 0.031 xtrk
    
    During this period, Russell observed the object's brightness to vary rapidly, with a period of 1 or 2 seconds:
    
    1006211242011051700064799  02   11214748  +252227 120 4             +69+85  2  R
    1006211242011051701434069  02   11152823  +621401 120 4             +56+79  1  F
    1006211242011051900193139  02   11220914  +503435 120 4             +66+85  2  F
    1006211242011052100332120  02   11184519  +461533 120 4             +47+75  1  F
    1006211242011052100334681  02   11184746  +313413 120 4             +48+74  1  F
    
    Ralf Vandebergh observed the same pass as Russell on May 21, and he also reported that it flashed regularly over a short
    period.
    
    The rapid spin may aid positional observers to spot the object in binoculars, since it is more likely for at least one
    bright maximum to occur during its rapid passage through the field of view, than when it rotated more slowly.
    
    Ted Molczan
    
    
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