Object U991031 recovered

Mike McCants (mikem@fc.net)
Sun, 28 Nov 1999 11:26:59 -0600 (CST)

Daniel Karcher reported the discovery of this object on Nov. 16.

I found this object last night about 4 minutes "early" compared to
the elements he determined.

The object was flashing with a period of 1.006 seconds.
(60 cycles in 60.36 seconds).  Its flashing seems very similar to
what I observe for the Centaur rocket 97 68B.  The flashes varied
in brightness from magnitude 9.5 to 10.5.  The minimum between
flashes was invisible.

Here is an elset that assumes that part of the 4 minutes early was
caused by an acceleration due to the longitude-dependent terms in
the Earth's gravitational field and the rest was corrected by adjusting
the elements slightly:

U991031       
1 99304U 99304  A 99331.99502295 0.00000230  00000-0  19296+5 0    05
2 99304   8.0270   6.1019 0467680 205.7063 154.2937  0.99572958    00

The object was altitude 44, azimuth 118 about 3:45UT last night.  The
range was about 24400 miles.  This object will drift 360 degrees in
longitude over a period of about 4 1/2 months.

Positional observation:
Lat 30.314 north, long 97.866 west, height 900 feet.
Time 99/11/28: 3:54:23.8UT
     RA 4 Hr 28.55 Min, Dec +2.77 degrees, epoch 1950.

Mike McCants

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