Re: USA 129 obs 980419

Bjoern Gimle (b_gimle@algonet.se)
Tue, 21 Apr 1998 07:12:18 +0200

I added my own Apr.3 observations, with very low weight, and my Apr.10
and (corrected) Apr.11 obs to Rainer Kracht's list of observations.
I loaded elcor on my old 386, and it ran very efficiently, and gave=
 residuals
less than .2 degrees, i.e. .2 seconds roughly, on the old observations,
and less on the rest of the interval.

This proves (?) that the maneuvre was before Apr.3, and if I had checked
the latest elsets at the time against Russell's obs. Mar.29, I should have
noticed that USA 129 was already delayed more than explicable as elset
inaccuracy.

Running cola.exe on the 98089 elset, and Rainer's, Pierre's or mine,
the maneuvre appears to have been made on Apr.02, possibly around 20:26 UT.

    4
   55.9486    3.1383      141.    Russell Eberst   2420
   51.0524   -2.4043       33.    Pierre Neirinck  2563
   53.7695   -9.6626       30.    Rainer Kracht    5005
   59.2238  -18.2284       44.    Bj=F6rn Gimle
USA 129 Apr 3-19
1 24680U 96072  A 98108.90064327  .00027449  00000-0  27485-3 0    10
2 24680  97.8178 169.5787 0505804  29.3849 333.4817 14.82951788    15
  4 98  4  3 19  2  4.5  13 15.0   28.6   1950 .01
  4 98  4  3 19  2 50.1  16 44.0   56.75  1950 .01
  4 98  4 10 19 30 28.7  09 36.0   23.5   1950 0.5
  4 98  4 11 19 48 14.7  07 15.0   17.5   1950 0.9
  1 98  4 15 20 58 15.3  10 15.43  43.270 1950 0.3
  1 98  4 17 21 33  4.3   6 28.78  15.954 1950 0.3
  1 98  4 17 21 33 37.4   5  6.75  27.779 1950 0.3
  1 98  4 17 21 34 11.4   3 49.12  34.090 1950 0.3
  2 98  4 18 20 13 15.7  17 35.82  48.440 1950 0.3
  2 98  4 18 20 13 34.0  18 38.86  52.075 1950 0.6
  3 98  4 19 20 29 39.6   8 44.15   4.370 2000 0.3
  00



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