During the GPS III SV01 launch, also on a Falcon 9, I tracked the GPS S-band beacon during the first pass over Europe and determined a rough TLE from that. See https://twitter.com/cgbassa/status/1076850608227926016?s=20 Propagating that TLE to the 2020-06-30T19:55:00 launch time at window open gives this estimate: 1 75001U 20999A 20182.83560185 .00000000 00000-0 50000-4 0 03 2 75001 55.0000 115.1011 0789184 53.6145 357.4290 14.39464904 00 This TLE assumes that GPS III SV03 will follow a similar launch trajectory as GPS III SV01, which is not clear to me at this point. For SV01, SpaceX used two burns on the upper stage, first into a coast orbit, then into the insertion orbit. This TLE is valid for the coast orbit. When/if data becomes available on the de-orbit area of the upper stage we can check if a similar launch profile is used for SV03. Regards, Cees _______________________________________________ Seesat-l mailing list http://mailman.satobs.org/mailman/listinfo/seesat-lReceived on Sun Jun 28 2020 - 03:33:17 UTC
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