Greg Roberts observed Vortex 6 (89035A / 19976) again last night. It was about 15 s early and nearly on-track, relative my 1.0041 rev/d estimated orbit. Here is a more accurate estimate, based on Greg's observations of Jan 18-19 UTC: Vortex 6 31642 X 39846 km 1 19976U 89035A 13019.46865951 .00000000 00000-0 00000-0 0 08 2 19976 7.2075 14.1805 0973812 243.2189 106.4972 1.00426093 07 Arc 20130118.86-0119.87 WRMS resid 0.004 totl 0.003 xtrk Vortex 6 was near 76.1 E, drifting east 0.55 deg/d. I suspect it is being re-located, but cannot rule out that it has been or is in the process of being decommissioned. Ted Molczan _______________________________________________ Seesat-l mailing list http://mailman.satobs.org/mailman/listinfo/seesat-l
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