The following information shows the result of the orbit fit based on Gary Bernstein's method. Most of the information should be self-explanatory. Take special note that while the original Bernstein software works with barycentric coordinates, we convert these results into a heliocentric coordinate system.
# Object: 12UE185 # Created Fri Nov 22 02:09:20 2024 # Orbit generated by ELGB # -->Covariance matrix from a Bernstein fit # Fitting 68 observations of 68 # Arc: 10.24y # First observation: 2012/10/23 # Last observation: 2023/01/19 # Chi-squared of fit: 88.35 DOF: 130 RMS: 0.20 # Min/Max residuals: -0.79 0.97 # Exact a, adot, b, bdot, g, gdot: 1.545821E-05 3.064891E-02 1.916219E-06 1.124829E-03 2.766960E-02 2.877494E-03 # Covariance matrix: 1.7610E-13 -6.1553E-14 4.8024E-15 -5.4036E-16 7.4466E-15 -1.6636E-13 -6.1553E-14 4.4542E-14 6.6208E-15 8.2415E-16 4.0308E-14 1.3431E-13 4.8024E-15 6.6208E-15 7.6796E-14 -1.0723E-14 2.2725E-14 1.9578E-14 -5.4036E-16 8.2415E-16 -1.0723E-14 2.4220E-15 1.3652E-15 2.5731E-15 7.4466E-15 4.0308E-14 2.2725E-14 1.3652E-15 1.1033E-13 1.2180E-13 -1.6636E-13 1.3431E-13 1.9578E-14 2.5731E-15 1.2180E-13 4.2870E-13 # lat0 lon0 xBary yBary zBary JD0 -20.436645 118.328365 0.991465 -0.012180 -0.032844 2456224.105978 # Heliocentric elements and errors Epoch: 2456224.5000 = 2012/10/24 Mean Anomaly: 21.69894 +/- 0.007 Argument of Peri: 244.47901 +/- 0.010 Long of Asc Node: 202.24197 +/- 0.000 Inclination: 20.46399 +/- 0.000 Eccentricity: 0.15480447 +/- 0.0000 Semi-Major Axis: 42.06498276 +/- 0.0021 Time of Perihelion: 2450218.0833 +/- 2.0 Perihelion: 35.55313519 +/- 0.0022 Aphelion: 48.57683033 +/- 0.0028 Period (y) 272.8282 +/- 0.02 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X -15.21292470 +/- 0.0002 Ecliptic Y 30.31370591 +/- 0.0004 Ecliptic Z -12.61927422 +/- 0.0002 Ecliptic XDOT -0.00282050 +/- 0.0000 Ecliptic YDOT -0.00116793 +/- 0.0000 Ecliptic ZDOT 0.00000501 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 36.18835215 +/- 0.0003 Geocenter to KBO 36.14071398 +/- 0.0004 # Hcoef: 6.42
The following table shows the complete astrometric record for 12UE185. The first three columns show the date of observation. The next six columns are RA and DEC. The next column (when provided) is the observed magnitude and filter. The next column is the object name (12UE185) followed by the observatory code and reference code for the source of the astrometry.
2012 10 23.60520 07 45 36.539 +00 26 37.25 21.7G 12UE185 F51 C~3463 2012 10 23.61712 07 45 36.519 +00 26 37.19 21.2G 12UE185 F51 C~3463 2012 10 27.64755 07 45 37.104 +00 24 16.78 20.7G 12UE185 F51 C~3463 2012 10 29.60254 07 45 36.700 +00 23 11.72 22.8G 12UE185 F51 C~3463 2012 10 29.61317 07 45 36.686 +00 23 11.61 21.7G 12UE185 F51 C~3463 2012 12 23.46301 07 42 53.847 +00 05 56.81 21.7G 12UE185 F51 C~3463 2012 12 23.47697 07 42 53.774 +00 05 56.78 22.0G 12UE185 F51 C~3463 2013 01 08.47139 07 41 28.622 +00 07 07.67 22.0G 12UE185 F51 C~3463 2013 12 23.49258 07 50 01.199 -00 10 24.67 21.6G 12UE185 F51 C~3463 2013 12 26.53351 07 49 45.959 -00 10 25.88 22.5G 12UE185 F51 C~3463 2013 12 26.54581 07 49 45.878 -00 10 25.75 21.7G 12UE185 F51 C~3463 2014 11 23.60129 07 58 59.435 -00 20 36.48 22.1G 12UE185 F51 C~3463 2014 11 23.61270 07 58 59.406 -00 20 37.06 21.8G 12UE185 F51 C~3463 2014 11 23.63551 07 58 59.349 -00 20 37.36 22.5G 12UE185 F51 C~3463 2014 12 15.53330 07 57 43.104 -00 26 06.78 23.0G 12UE185 F51 C~3463 2015 12 08.54383 08 05 12.540 -00 41 06.55 22.6G 12UE185 F51 C~3463 2015 12 08.55633 08 05 12.501 -00 41 06.72 22.1G 12UE185 F51 C~3463 2015 12 08.56887 08 05 12.457 -00 41 06.84 22.2G 12UE185 F51 C~3463 2015 12 08.58139 08 05 12.410 -00 41 07.05 22.3G 12UE185 F51 C~3463 2015 12 24.66022 08 04 04.003 -00 43 03.73 21.5G 12UE185 F51 C~3463 2016 01 09.43972 08 02 43.504 -00 41 59.56 22.0G 12UE185 F51 C~3463 2016 01 09.45381 08 02 43.428 -00 41 59.48 22.2G 12UE185 F51 C~3463 2016 01 09.46795 08 02 43.345 -00 41 59.28 22.0G 12UE185 F51 C~3463 2016 01 09.48210 08 02 43.271 -00 41 59.19 22.0G 12UE185 F51 C~3463 2016 01 11.46701 08 02 32.582 -00 41 38.53 22.0G 12UE185 F51 C~3463 2016 01 11.47869 08 02 32.523 -00 41 38.35 22.1G 12UE185 F51 C~3463 2016 01 11.49036 08 02 32.455 -00 41 38.29 21.9G 12UE185 F51 C~3463 2016 01 11.50203 08 02 32.390 -00 41 38.10 21.8G 12UE185 F51 C~3463 2016 01 12.43075 08 02 27.367 -00 41 27.39 22.3G 12UE185 F51 C~3463 2016 01 12.44272 08 02 27.301 -00 41 27.37 22.3G 12UE185 F51 C~3463 2016 01 12.45466 08 02 27.233 -00 41 27.15 22.6G 12UE185 F51 C~3463 2016 01 12.46660 08 02 27.171 -00 41 27.03 21.9G 12UE185 F51 C~3463 2016 02 26.34915 07 58 41.015 -00 23 04.29 21.4G 12UE185 F51 C~3463 2016 02 26.36301 07 58 40.989 -00 23 03.60 21.2G 12UE185 F51 C~3463 2016 03 08.24030 07 58 02.425 -00 16 38.78 22.2G 12UE185 F51 C~3463 2016 03 10.24087 07 57 56.442 -00 15 25.76 22.2G 12UE185 F51 C~3463 2016 03 10.25317 07 57 56.392 -00 15 25.34 22.2G 12UE185 F51 C~3463 2016 03 10.26551 07 57 56.361 -00 15 24.96 22.6G 12UE185 F51 C~3463 2016 03 10.27787 07 57 56.325 -00 15 24.43 22.2G 12UE185 F51 C~3463 2016 03 25.24342 07 57 23.772 -00 06 12.80 21.9G 12UE185 F51 C~3463 2016 03 25.26222 07 57 23.710 -00 06 12.20 22.7G 12UE185 F51 C~3463 2016 03 25.27472 07 57 23.682 -00 06 11.81 21.6G 12UE185 F51 C~3463 2016 03 25.28720 07 57 23.669 -00 06 11.58 22.0G 12UE185 F51 C~3463 2017 01 31.36730 08 07 41.861 -00 51 51.26 21.5G 12UE185 F51 C~3463 2017 01 31.37958 08 07 41.800 -00 51 51.09 21.6G 12UE185 F51 C~3463 2017 01 31.39183 08 07 41.737 -00 51 50.60 21.6G 12UE185 F51 C~3463 2017 01 31.40411 08 07 41.665 -00 51 50.24 21.5G 12UE185 F51 C~3463 2017 03 13.32763 08 04 46.426 -00 29 55.84 22.7G 12UE185 F51 C~3463 2020 01 23.14050 08 29 19.22 -01 43 07.1 21.6G 12UE185 X01 C~3qJa 2020 01 23.23739 08 29 18.67 -01 43 05.3 21.2G 12UE185 X01 C~3qJa 2020 01 23.29230 08 29 18.36 -01 43 04.2 21.5G 12UE185 X01 C~3qJa 2020 01 29.42282 08 28 45.462 -01 41 00.46 21.9w 12UE185 F51 C~3cjl 2020 01 29.43510 08 28 45.400 -01 41 00.45 22.0w 12UE185 F51 C~3cjl 2020 01 29.44734 08 28 45.339 -01 40 59.96 21.8w 12UE185 F51 C~3cjl 2020 11 26.58304 08 39 58.459 -01 56 44.66 22.2w 12UE185 F51 C~4NgV 2020 11 26.59788 08 39 58.432 -01 56 44.97 21.9w 12UE185 F51 C~4NgV 2020 11 26.61269 08 39 58.402 -01 56 45.46 22.1w 12UE185 F51 C~4NgV 2020 11 26.62774 08 39 58.380 -01 56 45.86 22.2w 12UE185 F51 C~4NgV 2022 01 30.375348 08 42 18.607 -02 11 34.40 21.8w 12UE185 F52 C~5RxN 2022 01 30.399738 08 42 18.487 -02 11 33.73 21.9w 12UE185 F52 C~5RxN 2022 01 30.411953 08 42 18.426 -02 11 33.59 22.0w 12UE185 F52 C~5RxN 2022 03 02.118400 08 39 47.027 -01 56 06.21 22.0G 12UE185 G37 C~5RxN 2022 03 02.158070 08 39 46.840 -01 56 04.98 12UE185 G37 C~5RxN 2022 03 02.198310 08 39 46.688 -01 56 03.25 12UE185 G37 C~5RxN 2023 01 19.433083 08 50 04.657 -02 30 19.57 21.9w 12UE185 F52 C~6B7L 2023 01 19.444723 08 50 04.563 -02 30 19.35 21.8w 12UE185 F52 C~6B7L 2023 01 19.456311 08 50 04.502 -02 30 19.37 21.9w 12UE185 F52 C~6B7L 2023 01 19.467928 08 50 04.458 -02 30 18.94 21.9w 12UE185 F52 C~6B7L
The following table shows the residuals to the orbit fit. The first coumn is the point number. The second column is the time, in years, measured from the first observation. The third and fifth columns are the regularized positions used in the orbit fit. The fourth and sixth columns are the residuals, in arc seconds, for RA and Dec respectively.
1 0.0000 0.00 0.37 0.00 -0.34
2 0.0000 0.00 0.02 0.00 0.02
3 0.0111 0.00 0.05 0.00 -0.19
4 0.0164 0.00 -0.64 0.00 0.72
5 0.0164 0.00 -0.79 0.00 0.97
6 0.1666 0.00 0.03 0.00 -0.09
7 0.1667 0.00 0.01 0.00 -0.10
8 0.2104 0.00 0.18 0.00 -0.05
9 1.1660 0.00 0.41 0.00 -0.24
10 1.1743 0.00 0.33 0.00 0.01
11 1.1744 0.00 0.07 0.00 0.13
12 2.0835 0.00 0.15 0.00 0.09
13 2.0835 0.00 0.16 0.00 -0.24
14 2.0836 0.00 0.20 0.00 -0.04
15 2.1435 0.00 0.03 0.00 -0.32
16 3.1237 0.00 -0.09 0.00 -0.05
17 3.1238 0.00 0.03 0.00 -0.06
18 3.1238 0.00 0.07 0.00 -0.01
19 3.1238 0.00 0.08 0.00 -0.06
20 3.1678 0.00 -0.36 0.00 0.38
21 3.2110 0.00 -0.02 0.00 -0.07
22 3.2111 0.00 -0.00 0.00 -0.13
23 3.2111 0.00 -0.09 0.00 -0.06
24 3.2112 0.00 -0.04 0.00 -0.11
25 3.2166 0.00 -0.01 0.00 -0.10
26 3.2166 0.00 0.07 0.00 -0.05
27 3.2167 0.00 0.01 0.00 -0.12
28 3.2167 0.00 0.00 0.00 -0.06
29 3.2192 0.00 -0.03 0.00 0.04
30 3.2193 0.00 -0.03 0.00 -0.08
31 3.2193 0.00 -0.06 0.00 -0.01
32 3.2193 0.00 0.00 0.00 -0.03
33 3.3422 0.00 -0.54 0.00 -0.06
34 3.3423 0.00 -0.08 0.00 0.16
35 3.3720 0.00 -0.11 0.00 -0.06
36 3.3775 0.00 0.06 0.00 0.00
37 3.3775 0.00 -0.14 0.00 -0.03
38 3.3776 0.00 -0.05 0.00 -0.10
39 3.3776 0.00 -0.03 0.00 -0.02
40 3.4186 0.00 0.52 0.00 0.15
41 3.4186 0.00 0.01 0.00 0.06
42 3.4187 0.00 -0.12 0.00 -0.01
43 3.4187 0.00 -0.03 0.00 -0.24
44 4.2731 0.00 0.01 0.00 0.02
45 4.2732 0.00 0.10 0.00 -0.10
46 4.2732 0.00 0.14 0.00 0.10
47 4.2732 0.00 0.06 0.00 0.16
48 4.3853 0.00 0.17 0.00 -0.14
49 7.2486 0.00 0.16 0.00 -0.01
50 7.2488 0.00 -0.16 0.00 0.03
51 7.2490 0.00 -0.33 0.00 0.13
52 7.2658 0.00 -0.14 0.00 0.22
53 7.2658 0.00 -0.07 0.00 -0.04
54 7.2658 0.00 0.02 0.00 0.18
55 8.0930 0.00 -0.03 0.00 0.08
56 8.0931 0.00 -0.00 0.00 0.10
57 8.0931 0.00 -0.03 0.00 -0.07
58 8.0931 0.00 0.08 0.00 -0.14
59 9.2697 0.00 -0.15 0.00 -0.08
60 9.2698 0.00 0.02 0.00 0.04
61 9.2698 0.00 0.10 0.00 -0.09
62 9.3539 0.00 0.03 0.00 0.01
63 9.3540 0.00 -0.21 0.00 -0.19
64 9.3541 0.00 0.12 0.00 0.09
65 10.2391 0.00 0.41 0.00 0.05
66 10.2391 0.00 -0.08 0.00 0.09
67 10.2392 0.00 -0.08 0.00 -0.10
68 10.2392 0.00 0.17 0.00 0.15
The following table comes from a 10My integration of the orbit of the object. Three columns are shown. The first column is the result of integrating the nominal orbit. The other two columns are based on clones of the nominal orbit that are +/- 3 sigma from the nominal orbit. If all three types agree then the classificiation is deemed secure. The basis for these calculations is described in more detail in AJ, 129, 1117 (2005). Any use made of these calculations should refer to and credit this publication and the Deep Ecliptic Survey Team.
12UE185 quality flag:3 Type: SCATEXTD SCATEXTD SCATEXTD axisobj 42.076 42.076 42.076 ecceobj 0.155 0.155 0.155 incobj 20.444 20.444 20.444 qmin 34.759 34.780 34.749 qmax 49.314 49.361 49.279 amean 41.881 41.884 41.882 amin 41.526 41.525 41.528 amax 42.262 42.262 42.269 emean 0.149 0.149 0.149 emin 0.133 0.133 0.132 emax 0.167 0.169 0.167 imean 21.164 21.163 21.164 imin 20.514 20.515 20.508 imax 21.869 21.869 21.872 excite_mean 0.391 0.391 0.391 fracstop 1.000 1.000 1.000 cjmean 2.894 2.894 2.894 libcent 0 -180.0 -180.0 -180.0 libamp 0 -180.0 -180.0 -180.0 libcent 1 -180.0 -180.0 -180.0 libamp 1 -180.0 -180.0 -180.0 libcent 2 -180.0 -180.0 -180.0 libamp 2 -180.0 -180.0 -180.0 libcent 3 -180.0 -180.0 -180.0 libamp 3 -180.0 -180.0 -180.0 libcent 4 -180.0 -180.0 -180.0 libamp 4 -180.0 -180.0 -180.0 kozaimean 179.9 179.7 180.0 kozaiamp 180.0 179.9 180.0