how to achieve reliable orbit solution with extremly short arc from SDSS data?
stefan.kurti@ymail.com Feb 12
Hi Sirs,
I work on SDSS data lately and I came across a trail in one triplet. I
use for my asteroid works your Find_Orb, and it tells about that - it
was launched on 2001 11 11 - see screenshot and sat-sdss.txt file. I
checked there was no known launch on that day. And also according to lat
and lon there are no spaceport at those coordinates ... But it could be
a satellite launched sooner. Is there any checking tool for satellites
positions?
Or does it mean, it is rather a NEO object?
Besides that I found several other NEO-ish objects (sdss-fast.txt) and
for some I was able to find second night in range of 24 hours.
Unfortunately there are too short arcs to get meaningful solutions for
searching in ITF (ONS) data ...
I attached astrometric data of few measured objects from cca 24 hours
arc.
In some cases the programm gets good solution with low RMS, but when I
click on Auto-Solve it says it is not the same object from both days,
"e" after Auto-Solve is higher than 1 (pas031, pis150, 754, 836, 1074,
1187).
As they were moving fast according to other MB objects nearby on checked
SDSS images, I am pretty sure that those moving objects from next day
were the same. What I do wrong? How to get good orbital solutions?
With "pis162" I found 3 nights and its seems that it could be a Hungaria
type of MP, but when I checked its astrometry in MPC NEO Rating tool, it
tells RMS 32. 57 ???
pis162 32.57 37 36 8 0 (MC 22) (Hun 25) (Pho 13) (Pal 1) (JFC 1)
I did something wrong again?
Thank you very much for your time and possible help or explanation in
advance!
Best regards,
Stefan
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Stefan Kurti
Gugska 27, 940 82 Nove Zamky, Slovakia
tel. --421-908-708033
www.skaw.sk
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pis1483 C2001 11 11.35831 03 30 29.74 +01 04 44.9 21.8 R 645
pis1483 C2001 11 11.36080 03 30 29.66 +01 04 32.2 22.2 R 645
pis1483 C2001 11 12.32274 03 30 10.10 -00 23 09.4 22.4 R 645
pis1483 C2001 11 12.32358 03 30 10.06 -00 23 14.3 21.1 R 645
pis1483 C2001 11 12.32606 03 30 09.96 -00 23 28.9 22.3 R 645
pis1187 C2001 11 11.37116 03 50 09.47 +00 42 29.1 21.5 R 645
pis1187 C2001 11 11.37199 03 50 09.42 +00 42 27.4 20.9 R 645
pis1187 C2001 11 11.37448 03 50 09.21 +00 42 22.2 21.9 R 645
pis1187 C2001 11 12.33560 03 49 05.40 +00 09 31.6 21.4 R 645
pis1187 C2001 11 12.33644 03 49 05.33 +00 09 30.1 20.9 R 645
pis1187 C2001 11 12.33892 03 49 05.17 +00 09 25.3 21.6 R 645
pis754 C2001 11 11.30523 02 15 09.83 +00 21 00.1 20.8 R 645
pis754 C2001 11 11.30606 02 15 09.77 +00 21 01.6 20.0 R 645
pis754 C2001 11 11.30855 02 15 09.58 +00 21 06.5 20.6 R 645
pis754 C2001 11 12.27009 02 13 59.13 +00 50 26.4 21.2 R 645
pis754 C2001 11 12.27091 02 13 59.06 +00 50 27.4 21.0 R 645
pis754 C2001 11 12.27340 02 13 58.86 +00 50 32.8 19.9 R 645
pis1137 C2001 11 11.34172 03 07 40.01 +00 40 24.7 19.6 R 645
pis1137 C2001 11 11.34255 03 07 39.93 +00 40 25.7 20.8 R 645
pis1137 C2001 11 11.34503 03 07 39.65 +00 40 27.5 20.7 R 645
pis1137 C2001 11 12.30575 03 05 56.79 +00 53 40.7 20.9 R 645
pis1137 C2001 11 12.30657 03 05 56.69 +00 53 41.5 21.2 R 645
pis1137 C2001 11 12.30906 03 05 56.41 +00 53 43.5 20.7 R 645
pis150 C2001 11 11.35997 03 33 56.18 -00 51 52.4 21.1 R 645
pis150 C2001 11 11.36080 03 33 56.08 -00 51 51.4 21.4 R 645
pis150 C2001 11 11.36328 03 33 55.85 -00 51 50.0 22.0 R 645
pis150 C2001 11 12.32399 03 32 20.43 -00 39 14.0 21.3 R 645
pis150 C2001 11 12.32481 03 32 20.35 -00 39 13.4 22.1 R 645
pis150 C2001 11 12.32730 03 32 20.09 -00 39 11.2 21.2 R 645
pis1141 C2001 11 11.34503 03 12 22.50 +00 45 43.5 20.7 R 645
pis1141 C2001 11 11.34587 03 12 22.42 +00 45 43.7 21.8 R 645
pis1141 C2001 11 11.34836 03 12 22.16 +00 45 44.9 21.4 R 645
pis1141 C2001 11 12.30906 03 10 47.08 +00 53 24.8 20.8 R 645
pis1141 C2001 11 12.30990 03 10 47.01 +00 53 24.9 20.3 R 645
pis1141 C2001 11 12.31238 03 10 46.74 +00 53 26.1 20.9 R 645
pis1074 C2001 11 11.31891 02 35 02.41 +00 46 52.2 18.5 R 645
pis1074 C2001 11 11.31975 02 35 02.34 +00 46 52.9 19.6 R 645
pis1074 C2001 11 11.32223 02 35 02.13 +00 46 54.8 19.4 R 645
pis1074 C2001 11 12.28377 02 33 42.20 +00 58 39.1 20.5 R 645
pis1074 C2001 11 12.28461 02 33 42.13 +00 58 39.5 19.9 R 645
pis1074 C2001 11 12.28708 02 33 41.92 +00 58 41.8 20.1 R 645
pis162 C2001 11 11.36909 03 47 21.88 -00 58 12.2 21.1 R 645
pis162 C2001 11 11.36992 03 47 21.80 -00 58 11.8 20.8 R 645
pis162 C2001 11 11.37241 03 47 21.57 -00 58 10.4 20.2 R 645
pis162 C2001 11 12.33353 03 45 51.82 -00 49 28.8 20.2 R 645
pis162 C2001 11 12.33435 03 45 51.74 -00 49 28.3 20.8 R 645
pis162 C2001 11 12.33684 03 45 51.50 -00 49 27.5 21.2 R 645
pis162 C2001 11 21.31502 03 31 40.89 +00 44 30.2 21.0 R 645
pis162 C2001 11 21.31586 03 31 40.80 +00 44 30.8 20.3 R 645
pis162 C2001 11 21.31833 03 31 40.57 +00 44 32.6 21.4 R 645
pis836 C2001 11 11.33508 02 58 11.06 +00 23 27.4 21.6 R 645
pis836 C2001 11 11.33591 02 58 11.00 +00 23 28.3 21.3 R 645
pis836 C2001 11 11.33840 02 58 10.77 +00 23 29.3 22.0 R 645
pis836 C2001 11 12.29953 02 56 48.49 +00 32 59.8 21.9 R 645
pis836 C2001 11 12.30036 02 56 48.41 +00 33 00.4 22.0 R 645
pis836 C2001 11 12.30285 02 56 48.18 +00 33 01.9 21.8 R 645
pas031 C2001 11 11.35457 03 26 02.85 -00 58 03.0 20.9 R 645
pas031 C2001 11 11.35541 03 26 02.81 -00 58 03.8 21.3 R 645
pas031 C2001 11 11.35789 03 26 02.64 -00 58 05.8 22.0 R 645
pas031 C2001 11 12.31902 03 25 07.00 -01 08 14.8 21.9 R 645
pas031 C2001 11 12.31985 03 25 06.94 -01 08 15.7 22.1 R 645
pas031 C2001 11 12.32234 03 25 06.78 -01 08 17.0 20.4 R 645
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pis1163 C2001 11 11.35955 03 32 13.54 +00 46 19.7 22.3 R 645
pis1163 C2001 11 11.36204 03 32 12.59 +00 48 28.9 22.3 R 645
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