Derek Breit, Tim Luton, Mike McCants, Jim Nix, Alberto Rango, Brad Young, and I, contributed observations used to determine the following element sets. It appears that the object manoeuvres to maintain its mean motion near 15.5266 rev/d, but I am uncertain of the frequency. Last night, it was ~1.5 s early, relative day-old elements, which suggests it may not have manoeuvred over the past couple of days. Meanwhile, geomagnetic activity has been rising, so the following may be realistic for the near-term, until it manoeuvres again: OTV-1 400 X 422 km 1 36514U 10015A 10149.18771682 .00014452 00000-0 22579-3 0 08 2 36514 39.9849 133.8889 0016000 261.6626 98.2371 15.52699196 02 Arc 20100527.07-0529.2 WRMS resid 0.074 totl 0.043 xtrk In the likely event it manoeuvres, the following should prove more accurate: OTV-1 401 X 422 km 1 36514U 10015A 10149.18772388 .00000000 00000-0 00000-0 0 08 2 36514 39.9849 133.8891 0016000 261.6626 98.2371 15.52666512 01 Arc 20100527.07-0529.2 WRMS resid 0.240 totl 0.046 xtrk Tonight, the difference in prediction times between the above is only a few seconds, but it will grow on subsequent nights. Ted Molczan _______________________________________________ Seesat-l mailing list http://mailman.satobs.org/mailman/listinfo/seesat-l
This archive was generated by hypermail 2b29 : Sat May 29 2010 - 13:39:51 UTC