Re: FengYun 1C debris

From: John Locker (john@satcom.freeserve.co.uk)
Date: Sun Jan 28 2007 - 06:25:51 EST

  • Next message: Larry Van Horn, N5FPW: "FengYun 1C debris - More Good News This Morning (US Time)"

    Thats rather worrying Björn , bearing in mind the present launch date of STS 
    117  (March 15 )
    
    John
    
    
    
    ----- Original Message ----- 
    From: "Björn Gimle (GlocalNet)" <bg_26934@glocalnet.net>
    To: <SeeSat-L@satobs.org>
    Sent: Sunday, January 28, 2007 11:06 AM
    Subject: Re: FengYun 1C debris
    
    
    > Re collision hazard:
    > Note that ISS has westward precession and Fengyun eastward;
    > Fengyun's perigee precesses ;
    > and the debris' high apogees decay into lower altitudes.
    > These work together to bring more object into ISS' orbit.
    >
    > The worst week in 99 days, with as much as 99 km altitude tolerance,
    > and 300 km range, seems to be March 8-14 with 51 "close" encounters.
    > (within 10 km altitude 0228-0306 is worse with five encounters?)
    >
    > /Björn
    >
    > This was done before I knew of the "300" new fragments.
    > With these, I only get eight more in range, and the worst week moves back 
    > to March 9-15.
    >
    > ----- Original Message ----- 
    > From: "Edward S Light"
    >
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    > 
    
    
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