Re: Estimated prelaunch elset for SpaceX Starlink 2 on 7 January 2020

From: ronlee--- via Seesat-l <seesat-l_at_satobs.org>
Date: Sun, 5 Jan 2020 19:07:09 -0700
I ran all three in Skymap and Marco's and TS Kelso's were essentially
identical.  Mine was adequate if observing visually and you allowed
three or more minutes tolerance.

Hopefully Heavens-Above and other sites will use one of the two better
elsets.

While my pass the next morning is poor, I checked Little Rock Arkansas
and it is a possibly adequate pass coming out of shadow around 5:51:40 AM CST
around azimuth 192 degrees, elevation 23 degrees and descending as it moves
to the eastern horizon.



> Op 3-1-2020 om 02:31 schreef ronlee--- via Seesat-l:
>> Starlink leader   Launch 220 UT 7 Jan 2020
>> 1 84001U          20009.11700000  .00000000  00000-0  00000-0 0    09
>> 2 84001  53.0000  27.6700 0001499  56.2305  58.5266 15.97989015    05
>
>
> Here is my estimate, based on a proxy from the November launch, i.e.
> assuming
> insertion at similar orbital altitude of ~280 km:
>
> STARLINK 2
> 1 70000U 20999A   20007.09677084 0.00069181  00000-0  15681-3 0    08
> 2 70000  53.0052 038.1027 0009048 332.8942  43.4811 15.96737629    03
>
> Note that T.S. Kelso has made an estimated elset available based on a
> SpaceX-provided State Vector:
>
> https://celestrak.com/NORAD/elements/supplemental/
>
> - Marco
>
>
> -----
> Dr Marco Langbroek  -  SatTrackCam Leiden, the Netherlands.
> e-mail: sattrackcam_at_langbroek.org
>
> Station (b)log: http://sattrackcam.blogspot.com
> Twitter: _at_Marco_Langbroek
> -----
>
>
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Received on Sun Jan 05 2020 - 20:08:13 UTC

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