RE: 39688 looks to be 99074 ?

From: Ted Molczan via Seesat-l <>
Date: Sat, 19 Apr 2014 09:57:35 -0400
> Looking again, forget what I said.
> Sorry for wasting your time.

Too late. I had already starting looking into the matter, but it certainly is not a waste of time.

USSTRATCOM has also catalogued 76004F / 39689, with a single TLE from last fall. The parent object, 76004A / 8585
librates between longitude 64.3 W and 143.9 W, and judging by their mean motion, I suspect 76004E and 76004F behave
similarly. The object that Cees Bassa observed on 2013 Oct 10 UTC, to which he assigned the UNID tag 13783A / 99074, was
near 73 E, which makes it unlikely to be related to any of the 76004 objects.

I suspect that Cees observed the aperture cover of DSP F7 (77007D / 9856), which has nearly the same inclination and
RAAN. Propagating ISON's orbit of epoch 14001.0 (found in ESA's Classification Of Geosynchronous Objects, Issue 16) to
the date of the observation, reveals agreement to within 3 minutes of time and 0.14 deg of track.

Ted Molczan

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Received on Sat Apr 19 2014 - 08:58:23 UTC

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