USA 86 = #22251 = 92 83 A elsets

Bjoern Gimle@tt-tech.se (Gimle@tt-tech.se")
Fri, 30 May 1997 11:13:42 +0200

If the Mean Motion of Ted Molczan's elset is essentially correct,
the average ndot2 over this entire period must be either .00002550
or .00000688.

If the Mean Motion of Pierre's elset is also correct, it has
increased from  14.54541260 to  14.54850398, which gives the
average ndot2 = 0.00000666.

Thus, the "+0.2" elset above is consistent in Epoch, Mean Motion,
ndot2 and B*, with the latest Molczan elset, and earlier elsets
from 1996, and observations around day 97144 that may be the base
for Pierre's. 

The "+0.2" elset gives a track 0.26 degrees East of Pierre's,
and the "+1.2" elset about 0.41 degrees East, so a crosstrack
error appears when using those two. I propose using Pierre's
elset with ndot2 and B* from the "+0.2" elset, which might be
useful over a longer timespan :

USA 86 proposal                                  1012 x 408
1 22251U 92083  A 97144.18581330  .00000688  00000-0  47111-4 0    12
2 22251  97.7475 235.8750 0426462 264.9554  89.9473 14.54850398    09

You may want to try to change Mean Motion to        14.54860298
if the old MM and this ndot2 are correct. 

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