New observations by Greg Roberts and Viktor Voropaev reveal that USA 202 (09001A / 33490) has manoeuvred, and is once again drifting west. Peter Wakelin's observations of 2009 Apr 08 UTC, also were after a manoeuvre; if the same manoeuvre also underlies Greg and Viktor's observations, then elset 70001 applies, and it is drifting west ~0.25 deg/d. ~0.25 deg/d west 1 70001U 09102.24877036 .00000000 00000-0 00000-0 0 00 2 70001 2.8893 339.0818 0019124 93.5862 266.2319 1.00203269 04 I see indications in the data of a manoeuvre after Apr 08, for which I offer ~0.5 deg/d and ~1 deg/d search elsets (the object has previously drifted at both rates): ~0.5 deg/d west 1 70002U 09102.24843829 .00000000 00000-0 00000-0 0 04 2 70002 2.8690 339.1747 0015797 101.4688 258.3045 1.00133000 02 ~1 deg/d west 1 70003U 09102.24585243 .00000000 00000-0 00000-0 0 08 2 70003 2.8721 339.2114 0014350 128.5553 230.5391 1.00000000 01 Russell Eberst has recovered 92086C / 22519, more than six months after it was last observed, running about an hour early. It takes considerable skill and patience to conduct the lengthy planar searches required to recover lost objects with such large prediction errors. I believe the following are reasonably accurate: USA 89 r 336 X 6731 km 1 22519U 92086C 09102.96103253 .00001504 00000-0 18456-3 0 05 2 22519 56.9094 117.9126 3225817 4.1118 358.0240 8.79752496 03 David Brierley, Russell Eberst, Björn Gimle, Alberto Rango and Viktor Voropaev contributed observations to the analysis of USA 186: USA 186 258 X 1013 km 1 28888U 05042A 09102.84981825 .00008932 00000-0 83492-4 0 07 2 28888 97.8950 166.7737 0538323 15.5573 346.1475 14.77181272 01 Arc 2009 Apr 09.74 - 12.86, WRMS residuals = 0.035 deg Ted Molczan ------------------------------------------------------------------------- Subscribe/Unsubscribe info, Frequently Asked Questions, SeeSat-L archive: http://www.satobs.org/seesat/seesatindex.html
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