STSS-ATRR elements

From: Ted Molczan (ssl3molcz@rogers.com)
Date: Sun May 10 2009 - 14:45:33 UTC

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    Russell Eberst reported new observations of the payload:
    
    STSS-ATRR                                                864 X 876 km
    1 34903U 09023A   09129.94853581  .00000000  00000-0  00000-0 0    00
    2 34903  98.9128 228.1111 0008048 261.3570  98.6686 14.06067333    04
    Arc 20090505.9-0509.96 WRMS resid 0.029 totl 0.012 xtrk
    
    In order to more fully document the history of the 2nd stage, I have propagated
    the above elements of the payload back to the first ascending node after launch,
    then adjusted the epoch and mean anomaly to Russell's two observations of the
    2nd stage, as it slightly trailed the payload, about 10 min before the first of
    its manoeuvres to its present orbit:
    
    STSS-ATRR r                                              864 X 876 km
    1 34904U 09023B   09125.89243617  .00000000  00000-0  00000-0 0    04
    2 34904  98.9128 224.1202 0008048 272.6993  87.3254 14.06067333    02
    Arc 20090505.9-0505.91 WRMS resid 0.055 totl 0.011 xtrk
    
    My second pass of the rocket was clouded, so my latest version of the present
    orbit remains:
    
    STSS-ATRR r                                              230 X 800 km
    1 34904U 09023B   09130.12063158  .00471594  00000-0  20692-2 0    07
    2 34904 112.6398 228.2610 0413213 299.4753  56.5775 15.16275225    07
    Arc 20090508.88-0510.13 WRMS resid 0.054 totl 0.037 xtrk 
    
    Prediction time uncertainty tonight *should* be well under 1 min, but I have
    lingering doubts about the eccentricity and the rate of decay, so caution is in
    order.
    
    Ted Molczan
    
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