LightSail-A: post-sail deployment elements

From: Ted Molczan via Seesat-l <seesat-l_at_satobs.org>
Date: Sun, 14 Jun 2015 16:52:15 -0400
Lengthy update added Jun 14 at 20:40 UTC

http://www.satobs.org/LightSail-A.html

Summary

This is probably my final orbit from optical or visual observations:

LightSail-A                                              304 X 419 km
1 40661U 15025L   15164.98442663  .12253905  00000-0  83486-1 0    09
2 40661  54.9934 233.7871 0085530 258.9801 100.1611 15.69159281    05
Arc 20150613.54-06131 WRMS resid 0.057 totl 0.018 xtrk

This is my latest, and possibly final orbit from radio observations:

LightSail-A                                              266 X 334 km
1 40661U 15025L   15165.50719572  .00000000  00000-0  00000-0 0    63
2 40661  54.9883 231.2921 0051203 264.6596 185.5882 15.90837413    03

Propagating with GMAT 2014a, the object is estimated to have descended low enough to disintegrate (78 km) on Jun 14 near
17:23 UTC. Here is a version of the TLE with ndot/2 and B* decay terms that roughly match the GMAT time of decay:

                                                         266 X 334 km
1 40661U 15025L   15165.50719572  .39500001  00000-0  10920 0 0    62
2 40661  54.9883 231.2921 0051203 264.6596 185.5882 15.90837413    03

Ted Molczan


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Received on Sun Jun 14 2015 - 15:52:38 UTC

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