Scott Campbell, Bob Christy, Bram Dorreman, Kevin Fetter, Tim Luton, Mike McCants, Greg Roberts, Patrick Schmeer, Peter Wakelin, Brad Young, and I, contributed observations used to determine one or more of the following element sets. Tim's observations of AEHF 1, on Sep 23 near 01:40 UTC, reveal what appears to have been a recent, small manoeuvre, probably centred on the apogee of Sep 22 at 21:41:57 UTC. Here is my guesstimate of the new orbit: AEHF 1 4679 X 49981 km 1 70016U 10266.06950231 .00000000 00000-0 00000-0 0 08 2 70016 15.1552 298.8987 6719700 198.6903 263.3419 1.40300000 08 Arc 20100922.9-0923.07 WRMS resid 0.004 totl 0.001 xtrk Prediction uncertainty tonight is at least a couple of minutes (time) along-track, and 0.05 deg cross-track. AEHF 1 r 224 X 50021 km 1 36869U 10039B 10265.40459460 .00007027 00000-0 20385-2 0 00 2 36869 21.5035 303.1661 7904245 195.0501 106.9717 1.55322470 02 Arc 20100911.11-0923.04 WRMS resid 0.004 totl 0.003 xtrk FIA Radar 1 1067 X 1080 km 1 37162U 10046A 10266.14074910 .00000000 00000-0 00000-0 0 04 2 37162 122.9957 103.1949 0008930 71.9213 288.2724 13.49595610 02 Arc 20100922.13-0923.17 WRMS resid 0.037 totl 0.016 xtrk When I observed 10046A on Sep 23, near 02:18 UTC, I had the impression that it could have been rotating slowly. Some of the other visual and radio obs also suggest rotation. Something to watch for tonight. Ted Molczan _______________________________________________ Seesat-l mailing list http://mailman.satobs.org/mailman/listinfo/seesat-l
This archive was generated by hypermail 2b29 : Thu Sep 23 2010 - 18:51:09 UTC