Re: USA 193 graphic.............

From: wbard@wb-web.org
Date: Fri Feb 29 2008 - 12:53:46 UTC

  • Next message: David Brierley: "DMB Some obs February 29 a.m."

    I would think that the objects that have high apogees (or any high energy orbit changes) would be relatively light weight objects. Since they are trackable, they probably have a noticeable cross section. Perhaps these pieces are Mylar from the satellite. If so, then I would think they would have high drag coefficients and come down quickly.
    
    One thing to watch will be which objects come down the quickest. I suspect those with plane changes and high apogees (which also have high perigee velocities).
    
    Even Mylar can severely damage or destroy a spacecraft. NASA and the military did not deride views of increased danger. Hence the reason they waited until the shuttle came down before launching the missile. 
    
    Bill 
    
    >Yes , I agree the debris will not be long lasting , however "any" debris 
    >within the LEO range presents a danger....and in the short term , that 
    >danger has been increased.
    >
    >Looking forward about three months...based on the information available , 
    >about 60% of the debris will have decayed by May 29 .....most over the 
    >Pacific , by the end of August , half a dozen pieces may remain.
    >
    >John
    >
    >
    >----- Original Message ----- 
    >From: "Marco Langbroek" <marco.langbroek@wanadoo.nl>
    >To: "satelliet lijst (SeeSat)" <SeeSat-L@satobs.org>
    >Sent: Friday, February 29, 2008 9:21 AM
    >Subject: Re: USA 193 graphic.............
    >
    >
    >>
    >>
    >> John Locker schreef:
    >>
    >>> Strange that our earlier concerns about 193 being " removed " from orbit 
    >>> and the resultant debris field if it was , were met with derision in 
    >>> certain quarters !
    >>> Strikes me this bird is coming home to roost
    >>
    >> In all fairness: most of this material will be gone in a few weeks. It 
    >> will not form a long-lasting hazard.
    >>
    >> Maybe it will increase my chances to finally observe a decay though.
    >>
    >> - Marco
    >>
    >
    
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