Derek Breit, Russell Eberst, Marco Langbroek, Pierre Neirinck, Jim Nix, Alberto Rango, Greg Roberts, Patrick Schmeer, Peter Wakelin, Mike Waterman, and Brad Young, contributed observations used to determine one or more of the following element sets. It was an eventful night. I want to analyze a few more, but best to get these out now. Alberto, Pierre and Russell, detected a reboost manoeuvre by USA 186, which I estimate occurred on Sep 02, near the perigee of 12:25:44 UTC. The following elements should be accurate to within a few seconds or so, tonight: USA 186 255 X 1020 km 1 28888U 05042A 10245.89453941 .00011314 00000-0 10199-3 0 06 2 28888 97.8821 308.2369 0544848 161.5718 200.6114 14.76397722 06 Arc 20100902.52-0902.91 WRMS resid 0.031 totl 0.015 xtrk As reported last week, Patrick Schmeer's observations of a bright UNID on Aug 14 and 20, proved to be of 07005C, which had not been observed since last summer. Russell recovered it last night, enabling the elements to be improved: IGS-R2 r 337 X 402 km 1 30588U 07005C 10246.12905285 .00025210 00000-0 24152-3 0 01 2 30588 97.3688 40.1985 0048000 89.1822 271.4937 15.65096424 01 Arc 20100903.14-0903.14 WRMS resid 0.111 totl 0.090 xtrk The arc remains short, so further improvement can be expected as new observations are reported. I expect predictions for the next few nights to be accurate to within several seconds of time, and about 0.2 deg of track. SDS 3-3 818 X 39529 km 1 28384U 04034A 10245.82594442 .00000000 00000-0 00000-0 0 09 2 28384 63.9587 288.4717 7289825 272.5800 13.8859 2.00650580 07 Arc 20100829.95-0902.86 WRMS resid 0.007 totl 0.004 xtrk AEHF 1 cooperated by manoeuvring as I had guessed; Derek Breit and Greg Roberts made the confirming observations. I expect the next manoeuvre tomorrow, so the following should be reasonably accurate tonight, but the solution would benefit from a longer arc. AEHF 1 717 X 49993 km 1 36868U 10039A 10246.08060118 .00000000 00000-0 00000-0 0 04 2 36868 20.8640 305.6358 7764000 188.7862 137.0161 1.53612616 07 Arc 20100902.51-0903.2 WRMS resid 0.008 totl 0.004 xtrk Ted Molczan _______________________________________________ Seesat-l mailing list http://mailman.satobs.org/mailman/listinfo/seesat-l
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