RE: DCB Obs 2/20/09

From: Ted Molczan (
Date: Sat Feb 21 2009 - 03:06:23 UTC

  • Next message: Greg Roberts: "RE: DCB Obs 2/20/09"

    Derek Breit wrote:
    > > 01359 65 034A   9739 G 20090220032042825 26 25 0535890-051306 37 S
    > > 
    > > PS..So how bad is that observation??
    > Relative the epoch 09050.88107325 elements, the cross-track 
    > residual is
    > excellent; however, the time is about 1.96 s late.
    > Excellent.. Because if there is one thing that is not wrong, 
    > it's the time...
    Except that the orbit is very stable, and the epoch of the elements precede your
    observation by only about 6 h, so the time residual would be expected to be much
    less. Perhaps there is an along-track residual that is making the time look bad.
    If you used ObsReduce, and can e-mail me the time-stamped image plus the
    relevant *.det file, I will review your reduction. (Am going to bed now, so no
    need to rush.)
    Ted Molczan
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