RE: Need TLE for Falcon R/B

From: Ted Molczan via Seesat-l <seesat-l_at_satobs.org>
Date: Tue, 9 Mar 2021 12:47:47 -0500
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



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Received on Tue Mar 09 2021 - 11:48:50 UTC

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