Updated NOSS 1-7 (D) elements

From: Ted Molczan via Seesat-l <seesat-l_at_satobs.org>
Date: Mon, 13 Apr 2015 11:35:52 -0400
Russell Eberst reported observations made last night, of an object that he identified as 86014E / 16624. It trailed my
estimated elements by about 1400 s, which led me to suspect it is 86014D / 16623. They are in nearly the same plane, and
D has trailed E for a long time. Russell's reduced data are here:

http://satobs.org/seesat/Apr-2015/0104.html

Here are approximate elements, derived from Mike McCants' epoch 14306.72095463 TLE:

NOSS 1-7 (D)                                            458 X 1730 km
1 16623U 86014D   15102.85687566  .00001406  00000-0  23600-3 0    05
2 16623  63.3270 112.5990 0851000  43.2760 323.1996 13.43793606    09
Arc 20150412.87-0412.87 WRMS resid 0.006 totl 0.006 xtrk

The procedure used was the same as for 86014E, except that I allowed argument of perigee to vary in the differential
correction.

Alberto Rango reported 86014E as not seen yesterday (Apr 12 18:34:51 UTC), in evening twilight, within +/-5 min. of
prediction. The prediction time uncertainty probably was no greater than ~2 min.; therefore, I suspect it was fainter
than expected, or the was sky too bright. If the consensus emerges that it is not in my estimated orbit, then I may
revisit the analysis.

Ted Molczan


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Received on Mon Apr 13 2015 - 10:36:47 UTC

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