Op 19-4-2011 00:05, Ted Molczan schreef: > As I was about to send this message, Marco Langbroek reported his suspected observation of one of the NROL-34 NOSS, made > at the same time as Bram's, which appears to match the leader (11014A). Both positions were close in track to the above > orbit, but the first one was ~10 S early, and the second one ~9 S late, indicating that the times corresponding to both > ends of the image trail needed to be swapped; doing so resolved the discrepancy. Indeed, I inadvertently swapped the trail ends in measuring (thinking it moved south to north while it was moving north to south): my apologies, it had been a tiring day..... As the swap in time actually has a (small) influence on the RA measured (due to sky rotation in the -small- time interval in question), here's a revised set of points (trail start, and trail end): 37386 11 014A 4353 G 20110418200622300 17 75 0556475+090900 56 37386 11 014A 4353 G 20110418200632350 17 75 0603132+080560 56 The trail is *very* weak on the image, and normally I wouldn't measure a trail this marginal (marginal is the correct word indeed): this was a low 20 degree west pass with unfavourable phase angle. As there is some ambiguity in the trail ends with this faint a trail, expect a larger residual than usual. - Marco ----- Dr Marco Langbroek - SatTrackCam Leiden, the Netherlands. e-mail: sattrackcam@wanadoo.nl Cospar 4353 (Leiden): 52.15412 N, 4.49081 E (WGS84), +0 m ASL Cospar 4354 (De Wilck): 52.11685 N, 4.56016 E (WGS84), -2 m ASL SatTrackCam: http://home.wanadoo.nl/marco.langbroek/satcam.html Station (b)log: http://sattrackcam.blogspot.com ----- _______________________________________________ Seesat-l mailing list http://mailman.satobs.org/mailman/listinfo/seesat-l
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