CB Obs May 20/21, 2012

From: C. Bassa (cgbsat@gmail.com)
Date: Mon May 21 2012 - 20:37:40 UTC

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    Observations May 20/21, 2012
    --------------------------------------------
    99999 99 999U   4553 F 20120520235450062 17 25 0218576+585283 37 S
    99999 99 999U   4553 F 20120520235454859 17 25 0228379+580966 37 S
    99999 99 999U   4553 F 20120520235459734 17 25 0237426+572426 37 S
    99999 99 999U   4553 F 20120520235504219 17 25 0245056+564302 37 S
    
    37813 11 050A   4553 F 20120521000859404 17 25 0218680+534442 37 S
    
    99998 99 998U   4553 F 20120521021330645 17 25 0442682+542189 37 S
    99998 99 998U   4553 F 20120521021337442 17 25 0442387+551987 37 S
    99998 99 998U   4553 F 20120521021347506 17 25 0441824+565071 37 S
    99998 99 998U   4553 F 20120521021357365 17 25 0441188+582805 37 S
    
    99997 99 997U   4553 F 20120521022547412 17 25 0446973+551811 37 R
    99997 99 997U   4553 F 20120521022556786 17 25 0445701+564401 37 R
    99997 99 997U   4553 F 20120521022606026 17 25 0444316+581378 37 R
    
    38341 12 025E   4553 F 20120521022619745 17 25 0449461+553121 37 R
    38341 12 025E   4553 F 20120521022630466 17 25 0448175+571167 37 R
    38341 12 025E   4553 F 20120521022640988 17 25 0446761+585788 37 R
    
    Notes:
    ------
    (1) During this observation session the camera was pointing low on the
    Northern horizon to monitor the last known plane of USA 224 as it
    moved through the field of view. Ted reports in a previous post that
    the unknown around 23:55 may be USA 224 (37348/11002A).
    (2) A second unknown was caught around 02:13 (listed as 99998).
    (3) A third unknown as seen as three brief but bright flashes each
    about 9 seconds apart. They were followed about 35 seconds later by
    three flashes matching in brightness, duration, spacing and direction.
    These flashes match 'Object E' (38341/12025E) of last Thursdays
    Japanese H-2A launch. I venture to guess that the 99997 unknown
    belongs to that launch, either as an as of yet unlisted object, or as
    one of the listed objects whose orbital elements are not yet
    accurately known.
    
    Regards,
       Cees
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