Re: Watch for possible decay

From: Daniel Deak (dan.deak@sympatico.ca)
Date: Sun Jun 27 2004 - 12:47:29 EDT

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    Ed Cannon wrote:
    
    
    > How did you know about 22273 being about to decay?  After
    > the fact I checked OIG 60 day and Alan Pickup's site, and
    > it was not listed in either one.  What tipped you off to
    > this one?  Just curious!!
    
    
    Hi Ed and list,
    
    I thought my answer would be of interest for the list also. I simply checked the 
    OIG Decay Prediction Report. This report lists all the objects about to decay 
    with details on the prediction and the latest one or five elsets.
    
    Then I studied the orbit to look where the perigee was, because for a highly 
    eccentric orbit the reentry point is always near the perigee. The BOZ motor is a 
    reliable decayer in the sense that it has a predictable behavior compared with a 
    satellite that has many appendages like solar panels. So I knew we had very good 
    chances to see it decay over North America.
    
    I maintain a reentry section in my French web site 
    (http://www.obsat.com/rentree.htm) that uses the predictions provided by Alan 
    Pickup. When he's not available, I use the OIG predictions. This time I missed 
    my first reentry by one orbit. The next pass (02:55 UTC) was too low to be 
    observable from my place. I'm glad many on the list were able to watch this one.
    
    Dan
    
    
    -- 
    Daniel Deak
    representant, projet spatial Starshine
    L'Avenir, Quebec
    
    COSPAR site 1747 : 45.7275N, 72.3526W, 191 m., UTC-4:00
    
    Site en francais sur les satellites:
    French-language satellite web site : http://www.obsat.com
    
    
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