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: 12UD185 # Created Sun Dec 22 02:09:22 2024 # Orbit generated by ELGB # -->Covariance matrix from a Bernstein fit # Fitting 100 observations of 100 # Arc: 16.02y # First observation: 2008/11/29 # Last observation: 2024/12/07 # Chi-squared of fit: 94.04 DOF: 194 RMS: 0.17 # Min/Max residuals: -0.52 0.46 # Exact a, adot, b, bdot, g, gdot: 1.588691E-05 3.305492E-02 -6.391269E-06 -1.436471E-02 3.272404E-02 1.089808E-04 # Covariance matrix: 3.0920E-13 -5.6509E-14 -7.1250E-14 1.9152E-14 -5.8655E-14 -6.7813E-14 -5.6509E-14 1.2921E-14 1.9213E-14 -5.1393E-15 7.8622E-15 1.8086E-14 -7.1250E-14 1.9213E-14 1.3535E-13 -1.7326E-14 5.0104E-15 2.9807E-14 1.9152E-14 -5.1393E-15 -1.7326E-14 3.1259E-15 -1.4888E-15 -7.9534E-15 -5.8655E-14 7.8622E-15 5.0104E-15 -1.4888E-15 4.9246E-14 5.9017E-15 -6.7813E-14 1.8086E-14 2.9807E-14 -7.9534E-15 5.9017E-15 2.7901E-14 # lat0 lon0 xBary yBary zBary JD0 16.229958 33.432752 -0.556227 0.228906 -0.786189 2454799.895654 # Heliocentric elements and errors Epoch: 2454800.5000 = 2008/11/30 Mean Anomaly: 145.42324 +/- 0.017 Argument of Peri: 356.81176 +/- 0.015 Long of Asc Node: 246.16313 +/- 0.000 Inclination: 28.32958 +/- 0.000 Eccentricity: 0.04392530 +/- 0.0000 Semi-Major Axis: 30.23819473 +/- 0.0007 Time of Perihelion: 2430266.7730 +/- 3.0 Perihelion: 28.90997293 +/- 0.0008 Aphelion: 31.56641654 +/- 0.0009 Period (y) 166.2808 +/- 0.01 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 24.86442019 +/- 0.0002 Ecliptic Y 17.07667381 +/- 0.0001 Ecliptic Z 8.54070869 +/- 0.0001 Ecliptic XDOT -0.00123030 +/- 0.0000 Ecliptic YDOT 0.00250052 +/- 0.0000 Ecliptic ZDOT -0.00115149 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 31.34956276 +/- 0.0001 Geocenter to KBO 30.55861293 +/- 0.0002 # Hcoef: 7.51
The following table shows the complete astrometric record for 12UD185. 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 (12UD185) followed by the observatory code and reference code for the source of the astrometry.
2008 11 29.39490 01 40 07.50 +27 49 49.1 22.4G 12UD185 568 C~4Z6Y 2008 11 29.40362 01 40 07.45 +27 49 48.7 21.8I 12UD185 568 C~4Z6Y 2010 10 15.54770 02 03 34.752 +28 12 56.26 21.8G 12UD185 F51 C~3462 2010 10 15.56007 02 03 34.674 +28 12 56.31 22.5G 12UD185 F51 C~3462 2012 10 23.49388 02 21 18.600 +27 45 43.08 22.3G 12UD185 F51 C~3462 2012 10 23.50900 02 21 18.483 +27 45 42.52 22.5G 12UD185 F51 C~3462 2012 10 23.52415 02 21 18.384 +27 45 41.95 22.3G 12UD185 F51 C~3462 2012 10 23.53933 02 21 18.272 +27 45 41.34 22.3G 12UD185 F51 C~3462 2012 10 24.54037 02 21 11.518 +27 45 05.20 22.5G 12UD185 F51 C~3462 2012 10 24.55411 02 21 11.422 +27 45 04.74 22.9G 12UD185 F51 C~3462 2012 11 03.49690 02 20 03.745 +27 38 37.47 21.6G 12UD185 F51 C~3462 2012 11 05.44831 02 19 50.496 +27 37 15.30 22.5G 12UD185 F51 C~3462 2012 11 05.46049 02 19 50.403 +27 37 14.87 22.8G 12UD185 F51 C~3462 2014 10 28.48102 02 39 15.913 +27 12 02.94 22.1G 12UD185 F51 C~3462 2014 10 28.49402 02 39 15.834 +27 12 02.74 22.5G 12UD185 F51 C~3462 2014 10 28.50710 02 39 15.738 +27 12 02.07 22.3G 12UD185 F51 C~3462 2014 10 28.52016 02 39 15.663 +27 12 01.59 22.6G 12UD185 F51 C~3462 2014 11 25.25916 02 36 09.706 +26 53 14.03 22.1G 12UD185 F51 C~3462 2014 11 25.28295 02 36 09.525 +26 53 13.73 22.3G 12UD185 F51 C~3462 2014 11 25.29540 02 36 09.506 +26 53 12.54 21.8G 12UD185 F51 C~3462 2014 11 27.40658 02 35 56.377 +26 51 38.52 22.5G 12UD185 F51 C~3462 2014 11 27.41884 02 35 56.326 +26 51 37.76 22.3G 12UD185 F51 C~3462 2014 11 27.43113 02 35 56.221 +26 51 37.33 22.9G 12UD185 F51 C~3462 2014 11 27.44340 02 35 56.119 +26 51 36.63 23.0G 12UD185 F51 C~3462 2014 12 07.42695 02 34 58.376 +26 44 03.69 22.6G 12UD185 F51 C~3462 2016 07 13.59414 03 00 24.432 +26 34 13.02 23.2G 12UD185 F51 C~3462 2016 07 13.59889 03 00 24.470 +26 34 13.44 22.3G 12UD185 F51 C~3462 2016 07 13.60365 03 00 24.514 +26 34 13.57 22.6G 12UD185 F51 C~3462 2016 07 13.60839 03 00 24.536 +26 34 13.84 22.1G 12UD185 F51 C~3462 2016 10 08.40529 02 59 30.066 +26 40 59.13 22.8G 12UD185 F51 C~3462 2016 10 08.41657 02 59 30.006 +26 40 58.78 22.5G 12UD185 F51 C~3462 2016 10 08.42791 02 59 29.940 +26 40 58.67 22.5G 12UD185 F51 C~3463 2016 10 08.43931 02 59 29.863 +26 40 58.32 22.1G 12UD185 F51 C~3463 2017 09 01.54142 03 10 38.101 +26 23 13.59 22.3G 12UD185 F51 C~3463 2017 09 01.56344 03 10 38.087 +26 23 13.24 22.0G 12UD185 F51 C~3463 2017 09 01.57448 03 10 38.045 +26 23 13.80 23.1G 12UD185 F51 C~3463 2017 10 29.38584 03 06 19.644 +26 08 31.79 22.2G 12UD185 F51 C~3463 2017 10 29.39683 03 06 19.559 +26 08 31.55 21.8G 12UD185 F51 C~3463 2017 10 29.40786 03 06 19.504 +26 08 31.05 22.6G 12UD185 F51 C~3463 2017 11 18.28798 03 04 03.379 +25 56 55.99 21.8G 12UD185 F51 C~3463 2017 11 18.30035 03 04 03.281 +25 56 55.53 22.1G 12UD185 F51 C~3463 2017 11 18.31271 03 04 03.198 +25 56 54.96 22.0G 12UD185 F51 C~3463 2017 11 18.32518 03 04 03.114 +25 56 54.57 22.6G 12UD185 F51 C~3463 2017 11 19.33349 03 03 56.264 +25 56 15.96 22.5G 12UD185 F51 C~3463 2017 11 19.34531 03 03 56.149 +25 56 15.75 22.2G 12UD185 F51 C~3463 2017 11 19.35720 03 03 56.076 +25 56 15.05 22.3G 12UD185 F51 C~3463 2017 11 19.36901 03 03 55.975 +25 56 14.52 21.8G 12UD185 F51 C~3463 2018 01 05.33830 02 59 46.481 +25 25 28.03 23.3G 12UD185 F51 C~3463 2020 10 25.55239 03 33 16.302 +24 48 49.30 22.4w 12UD185 F51 C~4J39 2020 10 25.56599 03 33 16.207 +24 48 49.06 22.3w 12UD185 F51 C~4J39 2020 10 25.57966 03 33 16.128 +24 48 48.67 22.3w 12UD185 F51 C~4J39 2020 10 25.59324 03 33 16.053 +24 48 48.25 22.2w 12UD185 F51 C~4J39 2021 01 11.135880 03 25 38.120 +24 06 24.64 22.4G 12UD185 G37 C~4U93 2021 01 11.201930 03 25 37.907 +24 06 22.86 12UD185 G37 C~4U93 2021 01 11.247080 03 25 37.771 +24 06 21.47 12UD185 G37 C~4U93 2021 12 01.18215 03 37 54.686 +23 59 34.38 12UD185 304 C~5RxN 2021 12 01.18348 03 37 54.676 +23 59 34.34 12UD185 304 C~5RxN 2021 12 01.18566 03 37 54.660 +23 59 34.08 12UD185 304 C~5RxN 2021 12 01.18725 03 37 54.660 +23 59 34.17 12UD185 304 C~5RxN 2021 12 01.18851 03 37 54.651 +23 59 34.00 12UD185 304 C~5RxN 2021 12 01.19100 03 37 54.620 +23 59 33.95 12UD185 304 C~5RxN 2021 12 01.19302 03 37 54.611 +23 59 34.04 12UD185 304 C~5RxN 2021 12 01.19455 03 37 54.607 +23 59 33.95 12UD185 304 C~5RxN 2022 01 04.10367 03 34 42.116 +23 40 59.74 12UD185 697 C~5RxN 2022 01 04.12907 03 34 42.016 +23 40 58.88 12UD185 697 C~5RxN 2022 01 04.15373 03 34 41.927 +23 40 58.27 12UD185 697 C~5RxN 2022 01 04.17928 03 34 41.808 +23 40 57.58 12UD185 697 C~5RxN 2022 01 04.20652 03 34 41.688 +23 40 56.72 12UD185 697 C~5RxN 2022 01 04.23219 03 34 41.581 +23 40 55.85 12UD185 697 C~5RxN 2022 01 04.25760 03 34 41.493 +23 40 54.99 12UD185 697 C~5RxN 2022 01 04.28262 03 34 41.361 +23 40 54.38 12UD185 697 C~5RxN 2022 01 04.30343 03 34 41.285 +23 40 53.77 12UD185 697 C~5RxN 2022 01 04.32025 03 34 41.191 +23 40 53.60 12UD185 697 C~5RxN 2022 01 04.33695 03 34 41.146 +23 40 52.73 12UD185 697 C~5RxN 2022 01 06.11370 03 34 33.942 +23 39 59.16 12UD185 697 C~5RxN 2022 01 06.13932 03 34 33.825 +23 39 58.85 12UD185 697 C~5RxN 2022 01 06.16502 03 34 33.743 +23 39 58.19 12UD185 697 C~5RxN 2022 01 06.19172 03 34 33.614 +23 39 57.23 12UD185 697 C~5RxN 2022 01 06.21943 03 34 33.508 +23 39 56.28 12UD185 697 C~5RxN 2022 01 06.24612 03 34 33.402 +23 39 55.67 12UD185 697 C~5RxN 2022 01 06.27130 03 34 33.286 +23 39 54.72 12UD185 697 C~5RxN 2022 01 06.29222 03 34 33.202 +23 39 54.22 12UD185 697 C~5RxN 2022 01 06.32622 03 34 33.089 +23 39 53.02 12UD185 697 C~5RxN 2022 01 08.19032 03 34 25.952 +23 38 58.67 12UD185 697 C~5RxN 2022 01 08.21670 03 34 25.851 +23 38 57.89 12UD185 697 C~5RxN 2022 01 08.24369 03 34 25.742 +23 38 57.05 12UD185 697 C~5RxN 2022 01 08.26916 03 34 25.637 +23 38 56.33 12UD185 697 C~5RxN 2022 01 08.29021 03 34 25.567 +23 38 55.97 12UD185 697 C~5RxN 2022 01 08.30674 03 34 25.532 +23 38 55.13 12UD185 697 C~5RxN 2022 01 10.10472 03 34 19.042 +23 38 03.32 12UD185 697 C~5RxN 2022 01 10.13465 03 34 18.946 +23 38 02.60 12UD185 697 C~5RxN 2022 01 10.18791 03 34 18.762 +23 38 01.10 12UD185 697 C~5RxN 2022 01 10.21378 03 34 18.631 +23 38 00.49 12UD185 697 C~5RxN 2023 10 15.429648 04 00 11.689 +23 14 52.76 22.5w 12UD185 F51 C~7Atj 2023 10 15.443715 04 00 11.611 +23 14 52.41 22.3w 12UD185 F51 C~7Atj 2023 10 15.457013 04 00 11.546 +23 14 52.14 22.1w 12UD185 F51 C~7Atj 2024 12 07.326775 04 03 00.576 +22 15 38.91 22.0w 12UD185 F52 C~8SNl 2024 12 07.337684 04 03 00.496 +22 15 38.59 22.1w 12UD185 F52 C~8SNl 2024 12 07.348623 04 03 00.435 +22 15 38.47 22.2w 12UD185 F52 C~8SNl 2024 12 07.359615 04 03 00.384 +22 15 37.84 22.2w 12UD185 F52 C~8SNl
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 0.07 0.00 -0.10
2 0.0000 0.00 -0.05 0.00 -0.02
3 1.8758 0.00 -0.02 0.00 -0.23
4 1.8759 0.00 0.06 0.00 0.24
5 3.8990 0.00 0.08 0.00 0.05
6 3.8990 0.00 -0.11 0.00 0.04
7 3.8991 0.00 -0.04 0.00 0.01
8 3.8991 0.00 -0.15 0.00 -0.05
9 3.9018 0.00 0.16 0.00 -0.10
10 3.9019 0.00 0.13 0.00 -0.06
11 3.9291 0.00 0.23 0.00 0.36
12 3.9344 0.00 0.02 0.00 -0.07
13 3.9345 0.00 -0.11 0.00 0.02
14 5.9113 0.00 -0.10 0.00 -0.05
15 5.9113 0.00 0.07 0.00 0.21
16 5.9113 0.00 -0.02 0.00 -0.00
17 5.9114 0.00 0.21 0.00 -0.02
18 5.9873 0.00 -0.08 0.00 -0.51
19 5.9874 0.00 -0.52 0.00 0.25
20 5.9874 0.00 0.38 0.00 -0.39
21 5.9932 0.00 0.07 0.00 0.22
22 5.9932 0.00 0.46 0.00 0.01
23 5.9933 0.00 0.04 0.00 0.14
24 5.9933 0.00 -0.34 0.00 -0.01
25 6.0206 0.00 -0.31 0.00 -0.07
26 7.6200 0.00 -0.25 0.00 -0.27
27 7.6200 0.00 -0.02 0.00 0.02
28 7.6200 0.00 0.30 0.00 0.02
29 7.6200 0.00 0.29 0.00 0.17
30 7.8577 0.00 -0.01 0.00 0.06
31 7.8577 0.00 0.06 0.00 -0.06
32 7.8577 0.00 0.04 0.00 0.07
33 7.8578 0.00 -0.13 0.00 -0.04
34 8.7560 0.00 0.04 0.00 0.06
35 8.7561 0.00 0.30 0.00 -0.33
36 8.7561 0.00 -0.10 0.00 0.20
37 8.9144 0.00 -0.07 0.00 0.01
38 8.9144 0.00 -0.22 0.00 0.11
39 8.9145 0.00 0.08 0.00 -0.05
40 8.9689 0.00 0.04 0.00 0.05
41 8.9689 0.00 -0.15 0.00 0.06
42 8.9690 0.00 -0.11 0.00 -0.05
43 8.9690 0.00 -0.07 0.00 0.03
44 8.9718 0.00 0.28 0.00 0.05
45 8.9718 0.00 -0.22 0.00 0.29
46 8.9718 0.00 -0.08 0.00 0.04
47 8.9719 0.00 -0.37 0.00 -0.04
48 9.1005 0.00 -0.17 0.00 0.10
49 11.9046 0.00 -0.08 0.00 0.08
50 11.9046 0.00 -0.20 0.00 0.19
51 11.9047 0.00 -0.09 0.00 0.16
52 11.9047 0.00 0.08 0.00 0.10
53 12.1170 0.00 -0.08 0.00 -0.07
54 12.1172 0.00 -0.12 0.00 0.10
55 12.1173 0.00 -0.01 0.00 0.05
56 13.0042 0.00 -0.07 0.00 0.00
57 13.0042 0.00 -0.09 0.00 0.01
58 13.0042 0.00 -0.10 0.00 -0.18
59 13.0042 0.00 0.06 0.00 -0.04
60 13.0042 0.00 0.06 0.00 -0.16
61 13.0042 0.00 -0.15 0.00 -0.13
62 13.0042 0.00 -0.08 0.00 0.03
63 13.0042 0.00 0.02 0.00 -0.01
64 13.0971 0.00 -0.15 0.00 0.00
65 13.0972 0.00 -0.01 0.00 -0.09
66 13.0972 0.00 0.24 0.00 0.04
67 13.0973 0.00 0.10 0.00 0.12
68 13.0974 0.00 0.05 0.00 0.08
69 13.0974 0.00 0.10 0.00 -0.01
70 13.0975 0.00 0.41 0.00 -0.10
71 13.0976 0.00 0.03 0.00 0.06
72 13.0976 0.00 0.21 0.00 0.08
73 13.0977 0.00 -0.13 0.00 0.43
74 13.0977 0.00 0.25 0.00 0.07
75 13.1026 0.00 0.15 0.00 -0.44
76 13.1027 0.00 -0.05 0.00 0.01
77 13.1027 0.00 0.29 0.00 0.11
78 13.1028 0.00 -0.02 0.00 -0.06
79 13.1029 0.00 0.08 0.00 -0.19
80 13.1029 0.00 0.11 0.00 0.00
81 13.1030 0.00 -0.10 0.00 -0.19
82 13.1031 0.00 -0.10 0.00 -0.07
83 13.1032 0.00 0.25 0.00 -0.24
84 13.1083 0.00 0.08 0.00 -0.01
85 13.1083 0.00 0.08 0.00 -0.02
86 13.1084 0.00 -0.01 0.00 -0.07
87 13.1085 0.00 -0.13 0.00 -0.04
88 13.1085 0.00 0.02 0.00 0.22
89 13.1086 0.00 0.43 0.00 -0.13
90 13.1135 0.00 -0.12 0.00 -0.35
91 13.1136 0.00 0.05 0.00 -0.22
92 13.1137 0.00 0.16 0.00 -0.20
93 13.1138 0.00 -0.41 0.00 -0.07
94 14.8748 0.00 0.13 0.00 0.26
95 14.8749 0.00 0.02 0.00 0.18
96 14.8749 0.00 0.05 0.00 0.17
97 16.0217 0.00 -0.31 0.00 0.03
98 16.0217 0.00 -0.40 0.00 0.03
99 16.0218 0.00 -0.19 0.00 0.22
100 16.0218 0.00 0.17 0.00 -0.09
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.
12UD185 quality flag:3 Type: 1:1 1:1 1:1 axisobj 30.401 30.401 30.401 ecceobj 0.039 0.039 0.039 incobj 28.252 28.252 28.252 qmin 27.718 27.694 27.703 qmax 32.664 32.666 32.688 amean 30.109 30.109 30.109 amin 29.787 29.786 29.786 amax 30.457 30.453 30.444 emean 0.050 0.050 0.050 emin 0.024 0.024 0.025 emax 0.077 0.077 0.077 imean 29.564 29.565 29.556 imin 29.393 29.393 29.383 imax 29.746 29.755 29.746 excite_mean 0.496 0.496 0.496 fracstop 1.000 1.000 1.000 cjmean 2.736 2.735 2.736 libcent 0 62.2 62.5 62.0 libamp 0 25.8 26.8 26.4 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 172.9 173.1 173.2 kozaiamp 180.0 180.0 179.9