Re: 13 feb iss pass del planetario de madrid

From: Björn Gimle (b.gimle@comhem.se)
Date: Tue Jan 23 2007 - 09:25:15 EST

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    Hello Stephan,
    
    On Jan.17 the drag terms suddenly increased 50%.
    This has a marked effect causing culmination to be lower in the SE.
    From then on, drag has slowly decreased towards normal values, so I think
    you can be quite confident.
    I checked NASA's 'future TLE's' to get their opinion -
    today the last elset given is for Feb.02 and gives 64 degrees alt. at 
    19:43:35 UTC+1.
    
    (Somewhat surprising though, since they show a higher drag than past elsets.
    But it's only 11 days, and halving the value results only in a delay of 8 
    seconds, and four degrees HIGHER)
    
    07033.ISS
    1 25544U 98067A   07033.56297412  .00020000  00000-0  20000-3 0  9110
    2 25544  51.6328  79.6967 0021746 159.9391 200.2634 15.77781007 29515
    
    http://spaceflight1.nasa.gov:80/realdata/sightings/SSapplications/Post/JavaSSOP/orbit/ISS/SVPOST.html
    
    ----- Original Message ----- 
    From: "Stephan Szyman" <szymanss@hotmail.com>
    >
    > I am hoping to demonstrate a high, bright pass of the ISS to an audience 
    > at the planetarium of madrid, spain, on or around the evening of the 13th 
    > of february (weather permitting, of course).
    >
    > I have been watching predictions for the pass of that evening since the 
    > beginning of this month. on 1 jan HA predicted the maximum elevation of 
    > the pass to have been 75 degrees, occurring at 19:48:43 local time.
    ...
    >
    > today, 21 jan,  HA shows 63 degrees at 19:42:30.
    >
    
    
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