A review of Kevin's recent UNIDs and related correspondence, reveals an observation on 2012 Jun 11 UTC, that Kevin noted was close to the orbit of Cartosat-1, but did not match. http://satobs.org/seesat/Jun-2012/0077.html Mike McCants noted off-list that the altitude and plane was consistent with the Elisa satellites. Our recent orbits of the Elisa East objects (below) passed at the same time as Kevin's UNID, but several degrees to the east Elisa E24 673 X 688 km 1 38008U 11076B 12196.19622887 .00000257 00000-0 50000-4 0 02 2 38008 98.1589 272.4606 0010692 121.7407 238.4838 14.63068126 01 Arc 20120711.13-0714.2 WRMS resid 0.030 totl 0.014 xtrk Elisa E12 679 X 681 km 1 38010U 11076D 12196.19638590 .00000256 00000-0 50000-4 0 02 2 38010 98.1819 272.4855 0001493 112.0474 248.0886 14.63069469 03 Arc 20120711.88-0714.2 WRMS resid 0.064 totl 0.033 xtrk Object D was closest in time, so I propagated its elements to the time of Kevin's UNID obs, and adjusted only RAAN and mean anomaly to fit the UNID. The temporal and track residuals were small, and the analysis revealed that the RAAN was 2.51 deg west of the Elisa East objects. Subtracting 2.51 deg from the RAAN of the recent Elisa East pair, yields current search elements for the Elisa West pair: Elisa W11 1 78007U 11076A 12196.19622887 .00000257 00000-0 50000-4 0 05 2 78007 98.1589 269.9500 0010692 121.7407 238.4838 14.63068126 08 Elisa W23 1 78009U 11076C 12196.19638590 .00000256 00000-0 50000-4 0 04 2 78009 98.1819 269.9760 0001493 112.0474 248.0886 14.63069469 01 I suspect they will be found within 1 min (time) and close to the track of these TLEs. Note that the correct catalogue numbers are 38007 and 38009, respectively. I modified them in the TLEs to help distinguish them from the eventual TLEs from observations. When reporting observations, please use the correct catalogue numbers. Happy hunting! Ted Molczan _______________________________________________ Seesat-l mailing list http://mailman.satobs.org/mailman/listinfo/seesat-l
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