Re: YES2 search elements

From: John Locker (john@satcom.freeserve.co.uk)
Date: Thu Sep 27 2007 - 13:58:12 EDT

  • Next message: Alberto Rango: "4641 PPAS 30 JUL 04 - 06 - 15 AUG 2007."

    Many thanks Ted.
    
    
    I spent over three hours on "tether watch " last night  , with what would 
    have been amazingly clear skies , had it not been for the wash out caused by 
    the bright Moon !
    
    Typical !
    
    However the search elements should at least help to narrow down the time 
    slots.
    Having said that , I'm now clouded in again.
    
    It seems ridiculous to me that having spent so much time developing and 
    launching the experiment , so little attention is being given to visual obs 
    , which
    in this instance could reveal so much information about the cause of the 
    problem.
    There is little further on the YES2 site, so I guess we must simply  keep 
    our eyes peeled.
    
    John
    UK
    
    
    
    ----- Original Message ----- 
    From: "Ted Molczan" <ssl2molcz@rogers.com>
    To: <seesat-l@satobs.org>
    Sent: Thursday, September 27, 2007 4:32 PM
    Subject: YES2 search elements
    
    
    >I concocted the following search elements based upon the sketchy 
    >information
    > available:
    >
    > - an Itar-Tass news report that the tether was cut on 2007 Sep 25, about 
    > 11:20
    > Moscow Time.
    >
    > - a YES2 report that re-entry "is to be expected in 4-11 days":
    >
    > http://www.yes2.info/node/128
    >
    > These elements do not take into account any orbital dynamics related to 
    > the
    > severing of the tether.
    >
    > 4 day decay
    > 1 70000U          07268.30600000  .01600000  00000-0  26322-2 0    06
    > 2 70000  62.9000 148.4000 0020000  52.0000 259.0000 16.02300000    00
    >
    > 11 day decay
    > 1 70000U          07268.30600001  .00600000  00000-0  98706-3 0    02
    > 2 70000  62.9000 148.4000 0020000  52.0000 259.0000 16.02300000    00
    >
    > I suggest bracketing searches between the times/tracks predicted by the 
    > above,
    > but it would not hurt to extend somewhat before and after.
    >
    > I believe that there is a definite slim chance that the above are 
    > sufficiently
    > accurate to locate the object.
    >
    > Happy hunting!
    > Ted Molczan
    >
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