IGS 1A and IB elements and my obs of 2003 Apr 27 UTC

From: Ted Molczan (molczan@rogers.com)
Date: Sun Apr 27 2003 - 13:49:41 EDT

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    I obtained the following points:
    
    27698 03 009A   2701 G 20030427015540380 17 25 1836150+385037 18 S
    27699 03 009B   2701 G 20030427025131880 17 25 1845972+741089 28 S
    27699 03 009B   2701 G 20030427025148380 17 25 2031788+745923 28 S
    27699 03 009B   2701 G 20030427025257570 17 25 2342349+643092 18 S
    27699 03 009B   2701 G 20030427025320570 17 25 0000801+611101 28 S
    27699 03 009B   2701 G 20030427025336230 17 25 0009178+590899 18 S
    27698 03 009A   2701 G 20030427032921230 17 25 0529352+540767 28 S
    
    Site 2701: 43.68764 N, 79.39243 W, 230 m
    
    I derived the following from observations by David Brierley and myself,
    received to this moment:
    
    Arc 2003 late Apr 26 - 27 UTC:
    
    IGS 1A           0.0  0.0  0.0  5.6 v
    1 27698U 03009A   03117.13637202  .00010000  00000-0  38790-3 0    04
    2 27698  97.4064 189.1811 0007112 308.9734  51.0870 15.26133318    02
    
    IGS 1B           0.0  0.0  0.0  3.1 v
    1 27699U 03009B   03117.11025508  .00010000  00000-0  39229-3 0    01
    2 27699  97.4104 189.0516 0003001 314.2574  45.8517 15.25778952    01
    
    Both have WRMS residuals = 0.016 deg
    
    Additional manoeuvres by IGS 1B are likely, so it would be prudent to expect
    it up to 30 s early tonight.
    
    Ted Molczan
    
    
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