Re: ISS followed by shuttle

From: JoeC (
Date: Sat Feb 26 2011 - 05:30:52 UTC

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    FWIW, using Lake Kickapoo Texas SPASUR radar fence:
    ISS crossed at 17:40:10 EST Fri Feb 25, 2011 (TLE predicted 17:40:44)
    STS crossed at 18:08:34 EST Fri Feb 25, 2011 (TLE predicted 18:06:49)
    So, STS was 28:24 behind ISS for this observation.
    The times were taken from spectrogram of recorded signals so I guess I 
    can claim that this is a visual observation of sorts.
    STS TLEs were from NASA public web page.
    Interesting to track STS closing on ISS by getting snapshots of time of 
    One more opportunity for SPASUR observation before docking.  ISS and 
    undocked STS (on orbit 23) should pass through Lake Kickapoo fence at 
    ranges which are conducive to good signal reflections on Feb 26 in the 
    01:40 EST to 02:00 EST time frame.
    On 02/25/2011 11:04 PM, Dale Ireland wrote:
    > Hello
    > Just saw the ISS pass over Seattle at 3:24UT followed by the Space shuttle
    > 21 minutes later. This is much later than predicted by the elements I got a
    > couple hours ago from sat track which predicted it to be only 10 minutes
    > behind the ISS.
    > Dale
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