96-29A,B orbits confirmed

Brierley David UK (dbrierl@inet.ntf1.af.mil)
28 May 1996 14:33:37 -0700

Dear All,

I've just joined seesat.  To those of you who don't know mw, I'm an English
observer from Malvern (station 2675) stationed in Colorado Springs, Colorado,
USA until approximately 1997 April 30.

My site is 2017, 38.9583N, 104.7603W, 2115m (that's almost 7000 ft).  I sit in
a garden chair and use handheld 20x80 binoculars.  Limiting magnitude for
satellites is about mag +9 except in the southern sky which is badly lit by
the lights of the city.  From the NW to N I have no trouble tracking 88-106B
and 91-76 at northern apex, elevation 8 deg.

To exercise some new software incorporating SGP4, I've computed orbits using
(I guess) the same observations.  For comparison with Kracht's orbits I get:

96-29A                          6.0
1 23862U 96029  A 96149.06625696  .00000035
2 23862  63.4170 230.1238 0069290 186.9001 173.0895 13.40340099

96029B        
1 23863U 96 29  B 96148.99513226  .00018691
2 23863  63.3883 221.4067 0255420 161.2062 199.8133 15.34784533

The main discrepancy is in the inclination of 96-29B.  I get 63.3883 deg +/-
0.0101.  ndot is well determined:- .00018691 +/- .00000242.

David Brierley