GPS launch, 2003-09B,F elset switch

From: Michael McCants (mmccants@jump.net)
Date: Tue Apr 01 2003 - 13:17:45 EST

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    A new GPS satellite has been launched.  From OIG:
    
    NAVSTAR 52 (USA-168)
    1 27704U 03010A   03091.45979185  .00354980  22633-6  91232-2 0    31
    2 27704  39.0005 309.7422 6048135  14.6461 356.8831  4.05032033    21
    DELTA 2 R/B(1)
    1 27705U 03010B   03091.03343955 -.00000907  28311-5  00000+0 0    10
    2 27705  37.1892 308.7096 0666439  10.9486 350.5652 14.67903991    03
    NAVSTAR 52 R/B(PAM-D
    1 27706U 03010C   03091.21349220  .00028940  25693-6  65978-3 0    29
    2 27706  38.9817 309.9152 6055975  14.4105 357.3170  4.04208735    11
    
    The orbit plane change and circularization burn of the previous
    GPS 51 launch was accidentally observed a few days after launch
    by amateur astronomers in Arizona low in their southwest as a
    3rd magnitude "comet".  This burn took place when the GPS was at
    apogee in its transfer orbit on a north-to-south equator crossing.
    Perhaps this burn can be predicted by determining when the 39 degree
    orbital plane of the transfer orbit matches the 55 degree plane of
    the objects in the final orbit.  GPS 51 was launched about 18:00 UT on
    Jan. 29.  The circularization burn occurred on Feb. 1 about 03:15 UT.
    GPS 52 was launched March 31 at 22:09 UT.  It is to replace GPS 17,
    NCat 20361, 1989-97A according to SpaceFlightNow.
    
    ---
    
    The elsets for objects 2003-09B and 09F have been switched by Spacecom:
    
    IGS 1A           4.0  2.0  0.0  5.0 v    8
    1 27698U 03009A   03090.48399306  .00018597  00000-0  72657-3 0   191
    2 27698  97.3061 162.9043 0004179 341.2336 211.0791 15.25917184   529
    IGS 1B           5.0  2.0  0.0  4.5 v   10
    1 27699U 03009B   03091.45881618 -.00000333  00000-0 -10725-4 0   114
    2 27699  97.3051 163.8501 0003809 245.0861 238.8075 15.24587451   678
    IGS H2A r       13.5  2.5  0.0  4.2 v   35
    1 27700U 03009C   03090.53099376  .00009794  00000-0  44976-3 0    63
    2 27700  97.3014 162.8534 0067880 310.9071  48.6295 15.18512205   533
    IGS Deb D        4.0  3.0  0.0  4.5 v   12
    1 27701U 03009D   03091.04640383  .00052980  00000-0  19991-2 0    97
    2 27701  97.3013 163.4545 0007662 336.1635  74.4030 15.26821951   602
    IGS Fairing 1    4.0  2.0  0.0  4.5 v    8
    1 27702U 03009E   03091.04664293  .00090035  00000-0  33750-2 0   108
    2 27702  97.3140 163.4612 0006566 350.1524  60.2820 15.26866340   605
    IGS Fairing 2    4.0  2.0  0.0  4.5 v    8
    1 27703U 03009F   03091.30021825  .00078926  00000-0  29838-2 0   192
    2 27703  97.2985 163.7010 0005126 346.0655  14.0444 15.26643985   648
    
    The H2A rocket and the two fairings vary in brightness as they tumble.
    All objects were quite bright.  (According to observations by Russell Eberst).
    
    Mike McCants
    
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    This archive was generated by hypermail 2b29 : Tue Apr 01 2003 - 13:23:34 EST