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 _______________________________________________ Seesat-l mailing list http://mailman.satobs.org/mailman/listinfo/seesat-lReceived on Sun Nov 07 2021 - 16:13:06 UTC
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