Three updates added since last night. http://www.satobs.org/LightSail-A.html At 18:30 I added the new USAF TLE, issued via Cal Poly: LightSail-A 330 X 523 km 1 40661U 15025L 15163.50698574 .06533945 00000-0 73484-1 0 364 2 40661 54.9944 240.6029 0141897 243.9136 114.1430 15.46659033 3475 This probably is the best orbit to use for tonight's predictions. At 18:00 UTC I added a new TLE documenting the orbit as of last night's European passes: LightSail-A 336 X 544 km 1 40661U 15025L 15163.05397602 .04745179 00000-0 70734-1 0 00 2 40661 54.9918 242.6501 0152989 240.6002 117.9681 15.42042563 08 Arc 20150611.28-0612.07 WRMS resid 0.036 totl 0.011 xtrk Also in that update is the latest positional and photometric data from the Astronomical Observatory of Odessa University. The photometric plot clearly shows a regular variation in brightness. At 13:30 UTC, I posted a TLE derived from the then available European observations, with an allowance for early arrival measured hours later by Ron Dantowitz from the east coast of N. America. This TLE could be used to provide a second opinion to the above USAF TLE. LightSail-A 333 X 535 km 1 40661U 15025L 15163.24831584 .05238559 00000-0 73838-1 0 01 2 40661 54.9903 241.7701 0148263 243.8928 114.6783 15.44108482 08 Arc 20150611.28-0612.26 WRMS resid 0.049 totl 0.015 xtrk Ted Molczan _______________________________________________ Seesat-l mailing list http://mailman.satobs.org/mailman/listinfo/seesat-lReceived on Fri Jun 12 2015 - 13:50:54 UTC
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