Thank you, Adam, for bringing this to our attention. I should mention that due to the high rate of decay, and the approximate nature of the elements, the prediction time uncertainty after 24 h is at least +/-7 minutes. Happy hunting! Ted Molczan > -----Original Message----- > From: Seesat-l <seesat-l-bounces+tedmolczan=rogers.com_at_satobs.org> On Behalf Of Limax7 via > Seesat-l > Sent: March-09-21 1:12 PM > To: Ted Molczan <ssl3molcz_at_rogers.com> > Cc: Seesat-L <seesat-l_at_satobs.org> > Subject: Re: Need TLE for Falcon R/B > > Hi > Great work Ted :) Now we can track it! > Very very thanks! > > Adam > > wt., 9 mar 2021 o 18:48 Ted Molczan via Seesat-l <seesat-l_at_satobs.org> > napisaĆ(a): > > > > With Adam Hurcewicz's help, I have derived approximate elements of what appears to be the > Falcon 9 rocket body of the 2021-017 launch. > > > > 281 X 282 km > > 1 92004U 21565A 21065.16791667 .01845038 00000-0 40100-2 0 00 > > 2 92004 52.9988 175.9979 0001000 0.0000 71.9086 15.97575395 03 > > > > Methodology > > > > I reduced two positions, separated in time by 1.1 minutes, from a video shot by a > different observer on 6 March 2021 5:03 local time (4:03 UTC): > > > > https://youtu.be/rKyTjz-E0FQ > > > > Adam contacted the observer and obtained accurate location co-ordinates. I failed to > request permission to publish the name of the observer or the co-ordinates. > > > > I identified a known satellite in the video, which enabled me to estimate that it begins > at 04:00:12 UTC. > > > > The above elements are a circular orbit approximation. The decay term is a trial and error > fit to approximate the time and track on the video Adam shot this morning: > > > > https://youtu.be/JdbWWKalPwg > > > > Ted Molczan > > > > > > > > _______________________________________________ > > Seesat-l mailing list > > http://mailman.satobs.org/mailman/listinfo/seesat-l > > _______________________________________________ > Seesat-l mailing list > http://mailman.satobs.org/mailman/listinfo/seesat-l _______________________________________________ Seesat-l mailing list http://mailman.satobs.org/mailman/listinfo/seesat-lReceived on Tue Mar 09 2021 - 13:11:58 UTC
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