Updated elements

From: Ted Molczan (ssl3molcz@rogers.com)
Date: Wed Oct 03 2012 - 16:58:16 UTC

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    Cees Bassa, Russell Eberst and Greg Roberts contributed observations used to update the following element sets.
    
    NOSS 3-6 (A)                                           1012 X 1198 km
    1 38758U 12048A   12277.19223062  .00000000  00000-0  00000-0 0    03
    2 38758  63.4382 352.7085 0124682 179.3730 180.7473 13.40854454    00
    Arc 20121001.12-1003.21 WRMS resid 0.015 totl 0.008 xtrk
    
    NOSS 3-6 (P)                                           1013 X 1198 km
    1 38773U 12048P   12277.19202380  .00000000  00000-0  00000-0 0    00
    2 38773  63.4401 352.5172 0123769 178.4161 181.7280 13.40771956    09
    Arc 20121002.73-1003.21 WRMS resid 0.010 totl 0.008 xtrk
    
    Cees and Greg observed 12048P progressively early relative the epoch 12276.147 elements, indicating that it had
    manoeuvred lower, reducing the rate of closing by 12048A. That this occurred while 12048P was leading, indicates that it
    is intended to remain the leader. Additional supporting evidence is found in their relative RAAN. Once again, I have
    found that 12048P's RAAN is nearly 0.2 deg less than that of 12048A, as expected of the leader of a NOSS 3 pair. Mike
    McCants obtained similar results. Yesterday's results had them closer in RAAN, but they were based on a shorter arc and
    fewer observations.
    
    At its present rate of closing, 12048A will reach the ~8 s standard temporal spacing behind 12048P, about 26 revs after
    the epoch of the above elements, early on Oct 05, about 03 h UTC. One or the other will manoeuvre to match the mean
    motion of the other.
    
    If, at the end of the manoeuvres, 12048P leads 12048A, then we may decide to swap designations, in accordance with our
    (not always followed) conventional to assign "A" to the leader.
    
    Additional information about NOSS: http://www.satobs.org/noss.html
    
    Ted Molczan
    
    
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