Re: Help with ID of UNID

From: Mike McCants (mmccants@io.com)
Date: Sat Aug 15 2009 - 08:07:47 UTC

  • Next message: Greg Roberts: "Optical 13 Aug 2009"

    Brad Young posted:
    
    >Can't id slow moving object 11m while waiting for 27938 last night - near
    >90 deg inclination and I estimate range 8000+ miles
    
    I did not find a match either.
    
    Here is a "plausible" nominal orbit.  There are "aux motors" in 46
    degree inclination orbits.  If one has a high drag, Spacecom could
    have lost it.
    
    1 99991U          09226.54754691 0.00000000  00000-0  00000-0 0    00
    2 99991  46.0000 127.4252 5400000  72.2765 287.7234  4.00000000    07
    
    Of course there are a multitude of orbits with higher or lower mean motion
    that would fit your observations, so no one should actually use this elset
    to try to search for it.
    
    This complementary orbit (argument of perigee on the opposite side
    of your observation) also works:
    
    1 99991U          09226.46154517 0.00000000  00000-0  00000-0 0    02
    2 99991  46.0000 126.8342 5400000 263.2765  96.7234  4.00000000    00
    
    This is more likely because it has the perigee over the southern hemisphere.
    
    Mike McCants
    
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