UnID + USA 86 obs, USA 129 non-obs

Bjoern Gimle (b_gimle@algonet.se)
Tue, 7 Dec 1999 23:59:18 +0100 

On Dec 4 it suddenly cleared after the storm - unfortunately after the
passes at 14, 23, 21 degrees elevation, so I tried for the 10 degree pass
with no success. Binocular limit +7.5 ?
Excellent weather Dec. 5 - but no luck on 17 and 24 degree passes. Time
windows wrt. elset below -9..+13 , -18..+11 and -18..+9 minutes,
corresponding to (SGP) ndot2 values of .000196 to .000249. Could the
unexpected orbit change of (the oldest) USA 86 have been caused by failure
and deorbiting of (the newest) USA 129?

USA 86 was an easy target, at a comparable elevation and range, only
predicted 0.5 and 1.0 magnitudes brighter because of better phase angles.
Pierre's elset 99335 that I was using was accurate to 0.1 sec ! - more
recent ones were between 0.5 and 1.1 sec. and up to 0.07 degrees off.

17590 and 08924 were observed as unknowns and IDed with SkyMap an
mccants.tle, but one remains (IOD format) :

22251 92 083A   5919 E 19991205155003570 17 35 0519080+340900 56 S
22251 92 083A   5919 E 19991205155141730 17 35 0655380+437500 56 S
22251 92 083A   5919 E 19991205155232960 17 35 0753370+457400 56 S
49339 49 339A   5919 E 19991205184801400 17 35 1409000+440000 28 S+050 10
49339 49 339A   5919 E 19991205184915900 17 35 1506600+478000 56 S+050 10
08924 76 061B   5919 E 19991205154931000 17 35 0512000+320000 18 S+040 10
17590 87 027B   5919 E 19991205172203780 17 35 1647100+821000 56 S+030 10
17590 87 027B   5919 E 19991205172351700 17 35 0851000+600000 28 S+040 10

I saw Nova Aquilae 2 for the first time, and determined the magnitude as
+4.9 from reference stars +3.37, +5.23, +5.58, +6.48

-- bjorn.gimle@tietotech.se (office)                         --
-- b_gimle@algonet.se (home)  http://www.algonet.se/~b_gimle --
-- COSPAR 5919, MALMA,    59.2615 N, 18.6206 E, 33 m         --
-- COSPAR 5918, HAMMARBY, 59.2985 N, 18.1045 E, 44 m         --
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