This update adds new observations reported by Alberto Rango on Feb 19, and mine of early Feb 21 UTC. Daniel Deak made a useful observation in bright twilight on the rev before mine, which provided an indication that it was reasonably on time - helpful in finalizing plans for my observations. USA 193 5.0 2.5 0.0 4.3 v 242 X 257 km 1 29651U 06057A 08052.01700749 .00286558 00000-0 31619-3 0 04 2 29651 58.4796 26.1000 0011038 100.0855 260.1493 16.08904727 04 Arc 2008 Feb 18.79 - 21.03, WRMS residuals = 0.036 deg Rate of altitude decrease is about 1.6 km/d (kilometres per day). Using the above elements and a 10.7 cm solar flux of 71, Satevo v0.51 estimates decay from orbit on 2008 March 12. The uncertainty is at least several days. Definition of 2-line elements format: http://spaceflight.nasa.gov/realdata/sightings/SSapplications/Post/JavaSSOP/SSOP _Help/tle_def.html Ted Molczan ------------------------------------------------------------------------- Subscribe/Unsubscribe info, Frequently Asked Questions, SeeSat-L archive: http://www.satobs.org/seesat/seesatindex.html
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