Updated USA 186 elements

From: Ted Molczan via Seesat-l <seesat-l_at_satobs.org>
Date: Fri, 3 Apr 2015 09:22:44 -0400
Mike McCants observed USA 186 on 2015 Apr 03 near 02:17 UTC, with binoculars, in poor conditions. He was fortunate to
time a ~3 deg appulse of Polaris, which revealed that the object was about 10 s late relative the search TLE I posted
earlier. I have used this information to refine the mean motion.

Propagating the search TLE, and correcting only mean anomaly and mean motion, yields the following estimate:

USA 186                                                  263 X 476 km
1 28888U 05042A   15093.08903093  .00037758  00000-0  19332-3 0    09
2 28888  96.9333 132.0980 0157573 301.2286  57.3615 15.65314084    06
Arc 20150402.78-0403.1 WRMS resid 0.063 totl 0.051 xtrk

Ted Molczan


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Received on Fri Apr 03 2015 - 08:23:30 UTC

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