OrbDet 2021-10 based on SeeSat-L observations

From: Andreas Hornig via Seesat-l <seesat-l_at_satobs.org>
Date: Sun, 7 Nov 2021 23:11:05 +0100
Hi everyone,

Cees, Leo and the others are posting their observations here and I am
really thankful for it.
I would like to also provide something back and started to use some of
their data and threw it into our OrbitDeterminator[4] tool.

Also I would like to receive some feedback how the results are. And also I
would like to get a feeling why some of the results look good and a few do
not. I will come back to this later, but consider this still BETA :).
Also I want to implement a method for the ballistic/drag coefficients to be
respected. Currently they are set to zero. But I intend to use several
observations and determine the coefficients by the change of orbit period.

So, feedback is welcome. I will start now. I have not decided for a good
format how to post it here yet.
You will find the object id, a link to n2yo for overview, then my result
and if available the nearest TLE from space-track.org. And for
convenience and replication reasons the data used from the observations
(sourced to their email).

Best regards, Andreas


## 27473
https://www.n2yo.com/satellite/?s=27473

My result:
1 00000U OrbDet   21302.05844068  .00000000  00000-0  00000+0 0    05
2 00000  63.4315 352.9571 0546535 345.9460  88.7148 12.01391099    06

Space-Track.org:
0 SL-12 R/B(2)
1 27473U 02037D   21302.22032439 -.00000086  00000-0 -20725-3 0  9993
2 27473  63.4334 352.6598 0548580 345.9522  68.8312 12.01400216845233

Used observation data [1]
27473 02 037D   4171 E 20211029012409275 17 25 2004568+860112 37 S
27473 02 037D   4171 E 20211029012415505 17 25 1906238+864267 37 S
27473 02 037D   4171 E 20211029012425553 17 25 1650317+870699 37 S
27473 02 037D   4171 E 20211029012435599 17 25 1447003+862734 37 S
27473 02 037D   4171 E 20211029012444842 17 25 1340975+851726 37 S
27473 02 037D   4171 E 20211029032853087 17 25 2104069+850297 37 S
27473 02 037D   4171 E 20211029032900220 17 25 2022134+855710 37 S
27473 02 037D   4171 E 20211029032910267 17 25 1846693+865011 37 S
27473 02 037D   4171 E 20211029032920313 17 25 1638609+865387 37 S
27473 02 037D   4171 E 20211029032929707 17 25 1501990+860994 37 S



## 41334
https://www.n2yo.com/satellite/?s=41334

My result:
1 00000U OrbDet   21297.75229742  .00000000  00000-0  00000+0 0    01
2 00000 123.0079 341.4680 0002719 342.4446  71.2576 13.41901249    08

Space-Track.org:
Not in db

Used observation data[2]
41334 16 010A   4171 E 20211024180318497 17 25 1927225-002291 37 S
41334 16 010A   4171 E 20211024180325549 17 25 1921258+002865 37 S
41334 16 010A   4171 E 20211024180335543 17 25 1912634+014217 37 S
41334 16 010A   4171 E 20211024180345547 17 25 1903807+025598 37 S
41334 16 010A   4171 E 20211024180355554 17 25 1854807+040969 37 S
41334 16 010A   4171 E 20211024180405297 17 25 1845905+052088 37 S
41334 16 010A   4171 E 20211024180715562 17 25 1552863+204625 37 S
41334 16 010A   4171 E 20211024180725562 17 25 1545271+210362 37 S
41334 16 010A   4171 E 20211024180735563 17 25 1537913+211842 37 S
41334 16 010A   4171 E 20211024180745565 17 25 1530782+213083 37 S
41334 16 010A   4171 E 20211024180755567 17 25 1523880+214095 37 S
41334 16 010A   4171 E 20211024180805567 17 25 1517209+214899 37 S
41334 16 010A   4171 E 20211024180815566 17 25 1510768+215505 37 S



## 28538
https://www.n2yo.com/satellite/?s=28538

My result:
1 00000U OrbDet   21294.76704304  .00000000  00000-0  00000+0 0    01
2 00000  63.8287 254.9301 0139997   0.6786  78.0719 13.43148326    02

Space-Track.org:
Not in db

Used observation data[3]
28538 05 004B   4171 G 20211021182432519 17 25 0507817+623344 37 S
28538 05 004B   4171 G 20211021182440959 17 25 0506273+610067 37 S
28538 05 004B   4171 G 20211021182450959 17 25 0504699+591462 37 S
28538 05 004B   4171 G 20211021182500958 17 25 0503433+573299 37 S
28538 05 004B   4171 G 20211021182508578 17 25 0502703+561809 37 S
28538 05 004B   4171 E 20211022172959599 17 25 1616166+051201 37 R
28538 05 004B   4171 E 20211022173006856 17 25 1617041+061112 37 R
28538 05 004B   4171 E 20211022173016857 17 25 1618271+073568 37 R
28538 05 004B   4171 E 20211022173026805 17 25 1619556+090358 37 R
28538 05 004B   4171 E 20211022173036855 17 25 1620889+103673 37 R
28538 05 004B   4171 E 20211022173046857 17 25 1622264+121383 37 R
28538 05 004B   4171 E 20211022173053251 17 25 1623173+131819 37 R
28538 05 004B   4171 E 20211022173129860 17 25 1628915+200851 37 R
28538 05 004B   4171 E 20211022173136861 17 25 1630146+213614 37 R
28538 05 004B   4171 E 20211022173146867 17 25 1631998+234692 37 R
28538 05 004B   4171 E 20211022173156860 17 25 1633963+260395 37 R
28538 05 004B   4171 E 20211022173204816 17 25 1635637+275785 37 R
28538 05 004B   4171 E 20211022173246857 17 25 1646517+391434 37 R
28538 05 004B   4171 E 20211022173256860 17 25 1649851+421422 37 R
28538 05 004B   4171 E 20211022173304466 17 25 1652652+443503 37 R
28538 05 004B   4171 E 20211022173336864 17 25 1708483+550953 37 R
28538 05 004B   4171 E 20211022173344664 17 25 1713716+574850 37 R
28538 05 004B   4171 E 20211022173418117 17 25 1749277+690716 37 R
28538 05 004B   4171 E 20211022173426872 17 25 1805103+715768 37 R
28538 05 004B   4171 E 20211022173436868 17 25 1829718+750287 37 R
28538 05 004B   4171 E 20211022173442224 17 25 1847033+763563 37 R
28538 05 004B   4171 E 20211022173526881 17 25 0006657+811970 37 R
28538 05 004B   4171 E 20211022173533729 17 25 0051131+801827 37 R
28538 05 004B   4171 E 20211022173606873 17 25 0238685+732174 37 R
28538 05 004B   4171 E 20211022173616882 17 25 0253661+710986 37 R
28538 05 004B   4171 E 20211022173626881 17 25 0305168+690098 37 R
28538 05 004B   4171 G 20211022192826412 17 25 0644930+592077 37 S



[1] SeeSat-L email: "CB Obs October 28/29, 2021: Fixed CMOS video
observations"
[2] SeeSat-L email: "CB Obs October 24, 2021: CMOS video observations"
[3] SeeSat-L email: "CB Obs October 21/22, 2021: Fixed video observations"

[4] https://github.com/aerospaceresearch/orbitdeterminator
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Received on Sun Nov 07 2021 - 16:13:06 UTC

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