Re: Updated orbit NROL-101 object 1

From: C. Bassa via Seesat-l <seesat-l_at_satobs.org>
Date: Fri, 20 Nov 2020 23:05:53 +0100
Hi Marco,

On Fri, Nov 20, 2020 at 10:10 PM Marco Langbroek via Seesat-l
<seesat-l_at_satobs.org> wrote:
> Updated orbit adding this evening's obs of Cees:
> NROL-101 payload (?)
> 1 99999U 20083X   20325.72967982 0.00000000  00000-0  00000+0 0    02
> 2 99999  58.5346 293.2578 0008717 274.3993  85.5431  3.77321260    01
> RMS 0.003                               arc 2020 Nov 18.17 - 20.82 UT

Using some experimental code that I have been developing I find a
slightly better solution:
1 99584M 20825A   20325.81668000  .00000000  00000-0 -11615-3 0    04
2 99584  58.5337 293.2544 0010055 264.5068 213.6182  3.77321159    00
# 20201118.17-20201120.82, 68 obs, 0.2755 sec, 0.0017 deg rms

Here is a plot with the residuals: https://imgur.com/a/cShEBTv

And a plot of the parameter probability distributions from a
Markov-Chain Monte Carlo method, providing the best fit parameters as
well as uncertainties: https://imgur.com/a/wOxqfEy

Regards,
    Cees
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Received on Fri Nov 20 2020 - 16:07:04 UTC

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