Re: Watch for possible decay

From: Daniel Deak (
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 
    ( 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.
    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 :
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