Updated elements

From: Ted Molczan (ssl3molcz@rogers.com)
Date: Fri Jun 19 2009 - 19:37:56 UTC

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    David Brierley, Russell Eberst, Kevin Fetter, Gerhard Groenewald, Mike McCants,
    Pierre Neirinck, Alberto Rango, Greg Roberts, Peter Wakelin, Brad Young, and I,
    contributed observations used to determine the following element set.
    
    USA 129                                                  294 X 935 km
    1 24680U 96072A   09169.80359559  .00004473  00000-0  71848-4 0    06
    2 24680  97.8221 222.5961 0458733  76.2720 288.9112 14.83788398    02
    Arc 20090608.83-0618.81 WRMS resid 0.035 totl 0.012 xtrk
    
    USA 186                                                 259 X 1007 km
    1 28888U 05042A   09169.89213992  .00007750  00000-0  73364-4 0    02
    2 28888  97.8866 232.7401 0533535 157.5361 205.0193 14.77995112    07
    Arc 20090608.81-0618.9 WRMS resid 0.021 totl 0.010 xtrk
    
    USA 202                                              35735 X 35856 km
    1 33490U 09001A   09168.08355769  .00000000  00000-0  00000-0 0    09
    2 33490   2.8453 340.8091 0014311  89.4738 270.6963  1.00244919    00
    Arc 20090604.9-0617.69 WRMS resid 0.009 totl 0.008 xtrk
    
    USA 202 passed 45.4 E on Jun 17 UTC, drifting west 0.104 deg/d. According to
    Mike McCants' int3 propagator, the orbit is fairly stable for the near term.
    Barring further manoeuvres, it will reach 42.4 E about 2009 Aug 04 UTC, remain
    there about three weeks, and then drift back to its present position by about
    2009 Oct 14 UTC. It would require a small manoeuvre to prevent it drifting to 58
    E by the end of the year. My guess is that its intended range of operation is
    between about 43 and 50 E.
    
    STSS-ATRR r                                              160 X 698 km
    1 34904U 09023B   09170.36647353  .00378858  00000-0  18915-3 0    07
    2 34904 112.5414 348.1455 0395436 262.0602  93.5506 15.45285506    07
    Arc 20090616.33-0619.38 WRMS resid 0.030 totl 0.011 xtrk
    
    99750A                                                2543 X 37662 km
    1 90004U 99750A   09168.30240915  .00000000  00000-0  00000-0 0    04
    2 90004  64.4870 220.9980 6631139 267.7761  21.0759  2.01458300    06
    Arc 20090523.06-0617.79 WRMS resid 0.006 totl 0.005 xtrk
    
    06829A                                                 272 X 12152 km
    1 90070U 06829A   09168.65729740  .00006858  00000-0  55473-3 0    02
    2 90070  27.4312 268.1493 4717935 234.5384  71.9484  6.14811492    04
    Arc 20090329.87-0617.8 WRMS resid 0.310 totl 0.011 xtrk
    
    When I last updated 06829A, I applied incorrect times to Gerhard Groenewald's
    positions of Jun 01 UTC; the following are correct, and were included in the
    analysis that produced the above elset.
    
    90070 06 829A   0000 G 20090601163458000 16 15 1505490-185646 18 S
    90070 06 829A   0000 G 20090601163511000 16 15 1511360-185447 18 S
    
    I have discarded my 06829A epoch 09152.58419386 elements, which were in error
    due the incorrect times.
    
    Ted Molczan
    
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    This archive was generated by hypermail 2b29 : Fri Jun 19 2009 - 19:38:52 UTC