Op 13-10-2011 17:30, Ted Molczan schreef: > I have used Satevo 0.51 to propagate the past 12 days of USSTRATCOM's TLEs of ROSAT (1990-049A / 20638) to decay, and > plotted the results on the same type of graph that I used last month for UARS (1991-063B / 21701): > > http://satobs.org/seesat_ref/misc/ROSAT_decay_predictions_v1.pdf > > Over the span of the data, the predicted date of decay has varied between mid-Oct 22 and early Oct 26 UTC, but in recent > days it has narrowed to between late Oct 22 and early Oct 24. It is a nice and bright (and fast) object currently. I observed a pass this evening, in twilight (sun at -8 degrees, blue sky with first stars). It zipped across the sky, attaining mag. +1, easily visible naked-eye. A photograph from this pass can be seen here: http://sattrackcam.blogspot.com/2011/10/observing-another-doomed-satellite.html - 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 Station (b)log: http://sattrackcam.blogspot.com Twitter: @Marco_Langbroek ----- _______________________________________________ Seesat-l mailing list http://mailman.satobs.org/mailman/listinfo/seesat-l
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