Observations by Greg Roberts late on 2010 Nov 28 UTC, and Alberto Rango, early on Nov 29 UTC, reveal an apparent small manoeuvre downward of about 1.2 km. Given the short arc, the following should be considered preliminary. X-37B OTV 1-1 284 X 287 km 1 36514U 10015A 10333.18496034 .00024512 00000-0 54109-4 0 01 2 36514 39.9919 75.6811 0002161 32.6011 327.4949 15.96957137 03 Arc 20101128.8-1129.2 WRMS resid 0.045 totl 0.022 xtrk I considered the possibility that drag was responsible for the lower orbit, but an increase of about ten-fold would have been required, which is not supported by the solar flux and geomagnetic activity. The change of orbit appears to have occurred on Nov 28, around 06 h UTC. Ted Molczan _______________________________________________ Seesat-l mailing list http://mailman.satobs.org/mailman/listinfo/seesat-l
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