USA 186 reboost search elements

From: Ted Molczan (sslmolcz@rogers.com)
Date: Fri Jun 08 2007 - 15:53:07 EDT

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    As I posted earlier, USA 186 was in the following orbit earlier today, UTC:
    
    USA 186         15.0  4.0  0.0  5.3 v
    1 28888U 05042A   07159.07500452  .00010627  00000-0  10254-3 0    04
    2 28888  97.8854 221.1000 0526580  51.7100 313.0272 14.79160280    09
    Arc 2007 May 30.09 - Jun 08.08, WRMS residuals = 0.020 deg
    
    Based upon historical behaviour, it is about due to make a small re-boost
    manoeuvre to remain within the required separation from USA 161 (01044A /
    26934).
    
    Here are search elements bracketing the probable earliest and latest manoeuvre
    times: at perigee passages between approximately 11 h UTC and 20 h UTC:
    
    11:45:09 UTC re-boost
    1 70001U          07159.48968750  .00010500  00000-0  10254-3 0    01
    2 70001  97.8854 221.5089 0536000  50.3591   1.2000 14.76920000    07
    
    19:51:54 UTC re-boost
    1 70002U          07159.82770833  .00010500  00000-0  10254-3 0    03
    2 70002  97.8854 221.8421 0536000  49.2580   1.1800 14.76920000    03
    
    If the object does not appear as predicted by the pre-manoeuvre elements, then
    the 70002 elset defines the probable earliest pass, and 70001 the latest. The
    difference is small, but worth taking into account when planning obs.
    
    Ted Molczan
    
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