LightSail-A: post-sail deployment elements

From: Ted Molczan via Seesat-l <seesat-l_at_satobs.org>
Date: Fri, 12 Jun 2015 14:50:01 -0400
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


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Received on Fri Jun 12 2015 - 13:50:54 UTC

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