Lacrosse 5 Disappearance and ISS/STS Jupiter Encounter

From: Gerhard HOLTKAMP (grd.holtkamp@t-online.de)
Date: Mon Aug 20 2007 - 17:37:30 EDT

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    Our good old friend Lacrosse 5 (2005-016A) did it's disappearance trick again 
    when it left mag 2 within about 3 seconds at around 19:53:50 UTC (20-AUG-07). 
    It actually happened at the end of a 15 second exposure I did and it does 
    show up on the picture. Once I have a good night's rest I'll correlate the 
    position on the photo with the calculated one and I should be able to give a 
    more accurate timing of the event. (A second picture I took shortly 
    afterwards does not show any track.)
    
    Half an hour before that I watched first the ISS (at 19:24:38 UT; 20-AUG-07) 
    and then Endeavour (at 19:25:00 UT) pass within two radii of Jupiter. Had I 
    been about 1 km further south I might have seen an occultation! But the close 
    miss also looked nice.
    
    Yesterday's ISS and Shuttle elements by Spacetrack as well as the ones posted 
    by JSC (and projected for today) had shown significant disagreements for 
    today's Jupiter-pass between each other and also with regard to the actually 
    observed pass today. (Yesterday Spacetrack would have seen the Shuttle 
    leading while JSC saw it trailing.) But the latest elements I just downloaded 
    from either site do agree with each other as well with my actual observation.
    
    Gerhard HOLTKAMP
    Darmstadt, Germany
    49.8822N, 8.6558 E
     
    
     
    
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