Hi All SBIRS GEO 3 was observed as it approached perigee this evening. No indication of a major orbital maneuver since launch and insertion into GTO. The orbit closely resembles that posted here prior to launch. http://www.satobs.org/seesat/Jan-2017/0096.html 41937 17 524A 8049 G 20170124021603418 27 25 0242764+002093 17 R 41937 17 524A 8049 G 20170124021613558 27 25 0244447+001447 17 R 41937 17 524A 8049 G 20170124021747561 27 25 0300915-005343 17 R 41937 17 524A 8049 G 20170124021755478 27 25 0302426-010004 17 R 41937 17 524A 8049 G 20170124021805618 27 25 0304282-010798 17 R 41937 17 524A 8049 G 20170124021814486 27 25 0306037-011543 17 R 41937 17 524A 8049 G 20170124021824626 27 25 0307948-012359 17 R SBIRS GEO 3 1 41937U 17021.04791667 .00000000 00000-0 00000-0 0 08 2 41937 23.2890 317.4457 7257357 178.4282 259.7950 2.37291095 04 # 20170124.09-20170124.10, 7 measurements, 0.006 deg rms The space craft exhibits extreme brightness variations. However, my visual observations were too short to establish a pattern based on visual observation alone. As this is a A2100 bus it will likely exhibit brightness variations similar to those of MUOS-5 while in GTO which may help others pick it up as there could be many minutes of invisibility before a peak. Observations by other means suggest this is the case. Regards, Scott Tilley ROBERTS CREEK 1: 8049 ST 49.4348 -123.6685 40. Scott Tilley ROBERTS CREEK 2: 8048 ST 49.4175 -123.6420 1. Scott Tilley Keep tabs on COSPAR 8049 on Twitter: https://twitter.com/coastal8049?lang=en _______________________________________________ Seesat-l mailing list http://mailman.satobs.org/mailman/listinfo/seesat-lReceived on Mon Jan 23 2017 - 21:48:56 UTC
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