Greg Roberts wrote:
> (3) I am NOT 100% sure it is USA 186 as I was expecting a more steep
> track angle and the object was quite variable. However I am
> reporting this just in case. It was running about 5-6 minutes late
> on the element sets mentioned.
The inclination appears to be 60 to 70 deg. I could fit a LEO circular orbit
near 70 deg, but the time residuals seemed just a bit too great, so I
experimented with Molniya, and found reasonable looking solutions. I have taken
the liberty of assigning it the next UNID number in your sequence:
06852A 0.0 0.0 0.0 2.2 v 495 X 39861 km
1 91093U 06852A 06352.81681366 .00000000 00000-0 00000-0 0 01
2 91093 63.4000 95.7242 7411724 275.3565 322.3354 2.00600000 05
550 X 39805 km
1 91093U 06852A 06352.81681366 .00000000 00000-0 00000-0 0 01
2 91093 64.0000 94.3038 7391013 279.4466 322.0098 2.00600000 05
615 X 39740 km
1 91093U 06852A 06352.81681366 .00000000 00000-0 00000-0 0 01
2 91093 65.0000 92.0128 7366497 286.0789 321.4692 2.00600000 04
Note: the above are SGP4, not SDP4.
These yield nearly identical predictions, so if the mean motion is correct, you
have a reasonable chance to recover it.
Greg, I notice that your epochs are all 2 years too great. Am I correct in
assuming that the typo would not have otherwise adversely affected your
reductions?
Ted Molczan
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