RE: Inquiry: Lacrosse and SDS

From: Ted Molczan (molczan@rogers.com)
Date: Sat Dec 06 2003 - 01:32:29 EST

  • Next message: Ted Molczan: "RE: Inquiry: Lacrosse and SDS"

    Jed Hopewell wrote:
    
    > Can anyone provide a good set of elements for a typical Lax 1 
    > orbit or its final orbit before decomission, or could I take 
    > this data from the similar lacrosse 3?
    
    Here is an accurate SGP4 elset for the epoch of the ascending node prior to
    Russell Eberst's last reported observation, on 1997 Mar 24 UTC:
    
    Observation arc 1997 Mar 02.18 - 24.89 UTC:
    
    Lacrosse 1      18.0  4.5  0.0  3.6 v
    1 19671U 88106B   97 83.86856127  .00000030  00000-0  48440-5 0    08
    2 19671  56.9772  60.2687 0010104 115.1979 245.0091 14.70734531    06
    
    WRMS residuals = 0.014 deg
    
    Lacrosse failed to appear when Russell tried to observe it two nights later, as
    he reported here:
    
    http://satobs.org/seesat/Mar-1997/0219.html
    
    It was never seen again, so it is reasonable to conclude hat it was de-orbited
    sometime between Mar 24.89 - 26.85 UTC.
    
    Ted Molczan
    
    
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