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: 531942 # Created Sun Dec 22 02:07:28 2024 # Orbit generated by ELGB # -->Covariance matrix from a Bernstein fit # Fitting 76 observations of 76 # Arc: 8.20y # First observation: 2011/01/23 # Last observation: 2019/04/07 # Chi-squared of fit: 74.97 DOF: 146 RMS: 0.18 # Min/Max residuals: -0.70 0.56 # Exact a, adot, b, bdot, g, gdot: 2.981517E-05 1.569755E-01 9.655103E-06 4.782566E-02 8.613677E-02 -5.003687E-02 # Covariance matrix: 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 # lat0 lon0 xBary yBary zBary JD0 -7.765904 114.459317 -0.149276 -0.131843 -0.966736 2455585.004186 # Heliocentric elements and errors Epoch: 2455584.5000 = 2011/01/23 Mean Anomaly: 329.75832 +/- 0.000 Argument of Peri: 40.72715 +/- 0.000 Long of Asc Node: 137.13003 +/- 0.000 Inclination: 18.55205 +/- 0.000 Eccentricity: 0.37459052 +/- 0.0000 Semi-Major Axis: 17.04652589 +/- 0.0000 Time of Perihelion: 2457744.0120 +/- 0.0 Perihelion: 10.66105881 +/- 0.0000 Aphelion: 23.43199297 +/- 0.0000 Period (y) 70.3821 +/- 0.00 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X -5.29879518 +/- 0.0000 Ecliptic Y 11.29625281 +/- 0.0000 Ecliptic Z -1.56863913 +/- 0.0000 Ecliptic XDOT -0.00397528 +/- 0.0000 Ecliptic YDOT -0.00330720 +/- 0.0000 Ecliptic ZDOT 0.00172111 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 12.57559958 +/- 0.0000 Geocenter to KBO 11.60958689 +/- 0.0000 # Hcoef: 11.73
The following table shows the complete astrometric record for 531942. 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 (531942) followed by the observatory code and reference code for the source of the astrometry.
2011 01 23.50342 07 39 51.328 +13 34 43.66 22.3G 531942 F51 C~2kOl 2012 01 15.54713 08 22 21.406 +14 25 09.35 22.8G 531942 F51 C~2kOl 2012 01 15.55980 08 22 21.250 +14 25 10.64 22.6G 531942 F51 C~2kOl 2013 01 08.613632 09 08 14.860 +14 50 12.47 21.2R 531942 F51 C~0oUA 2013 01 10.543544 09 07 50.785 +14 53 01.26 21.2R 531942 F51 C~0oUA 2013 01 10.557367 09 07 50.602 +14 53 02.40 21.4R 531942 F51 C~0oUA 2013 01 10.571216 09 07 50.410 +14 53 03.56 531942 F51 C~0oUA 2013 02 03.35615 09 02 13.904 +15 31 11.59 22.2w 531942 F51 C~0oUA 2013 02 03.37082 09 02 13.693 +15 31 13.08 22.1w 531942 F51 C~0oUA 2013 02 03.38547 09 02 13.469 +15 31 14.68 21.9w 531942 F51 C~0oUA 2013 02 04.304286 09 01 59.805 +15 32 47.10 21.4R 531942 568 C~0oUA 2013 02 04.305619 09 01 59.781 +15 32 47.21 21.5R 531942 568 C~0oUA 2013 02 04.310999 09 01 59.707 +15 32 47.79 21.9R 531942 568 C~0oUA 2013 02 06.317929 09 01 29.869 +15 36 09.71 21.6R 531942 568 C~0oUA 2013 02 06.319180 09 01 29.854 +15 36 09.75 21.5R 531942 568 C~0oUA 2013 02 06.320435 09 01 29.828 +15 36 09.91 21.5R 531942 568 C~0oUA 2013 02 10.342805 09 00 30.401 +15 42 53.61 21.4R 531942 568 C~0oUA 2013 02 10.344057 09 00 30.386 +15 42 53.67 21.6R 531942 568 C~0oUA 2013 02 10.345311 09 00 30.368 +15 42 53.87 21.7R 531942 568 C~0oUA 2013 02 11.93637 09 00 07.11 +15 45 32.6 21.3R 531942 J04 C~0oUA 2013 02 11.94408 09 00 07.00 +15 45 33.3 21.5R 531942 J04 C~0oUA 2013 02 11.95178 09 00 06.91 +15 45 34.2 21.5R 531942 J04 C~0oUA 2013 03 03.25695 08 55 48.834 +16 16 04.66 23.0G 531942 F51 C~2kOl 2013 03 03.27126 08 55 48.676 +16 16 05.67 22.4G 531942 F51 C~2kOl 2013 03 03.28565 08 55 48.490 +16 16 06.98 22.1G 531942 F51 C~2kOl 2013 03 03.30000 08 55 48.330 +16 16 08.23 22.4G 531942 F51 C~2kOl 2014 03 05.33055 09 43 44.867 +16 30 39.34 22.2G 531942 F51 C~2kOl 2015 01 15.66262 10 45 44.258 +14 16 28.10 20.9G 531942 F51 C~2kOl 2015 01 20.43775 10 45 05.173 +14 25 34.47 22.3w 531942 F51 C~1j9Q 2015 01 20.46454 10 45 04.934 +14 25 37.90 22.3w 531942 F51 C~1j9Q 2015 01 20.47799 10 45 04.777 +14 25 39.48 22.5w 531942 F51 C~1j9Q 2015 01 22.44994 10 44 46.746 +14 29 33.33 22.3w 531942 F51 C~1j9Q 2015 01 22.46353 10 44 46.612 +14 29 35.25 22.2w 531942 F51 C~1j9Q 2015 01 22.47718 10 44 46.473 +14 29 36.98 22.2w 531942 F51 C~1j9Q 2015 01 22.49087 10 44 46.339 +14 29 38.63 22.2w 531942 F51 C~1j9Q 2015 02 01.42890 10 43 00.345 +14 50 15.22 22.1G 531942 F51 C~2kOl 2015 02 01.44114 10 43 00.188 +14 50 16.33 22.1G 531942 F51 C~2kOl 2015 02 01.45348 10 43 00.056 +14 50 18.17 22.4G 531942 F51 C~2kOl 2015 12 16.58214 11 36 18.286 +12 10 32.51 22.5G 531942 F51 C~2kOl 2015 12 16.59415 11 36 18.379 +12 10 33.05 22.6G 531942 F51 C~2kOl 2015 12 17.62305 11 36 26.170 +12 11 17.59 23.6G 531942 F51 C~2kOl 2016 01 13.48761 11 37 37.205 +12 45 05.68 22.6G 531942 F51 C~2kOl 2016 01 13.49927 11 37 37.182 +12 45 06.69 22.3G 531942 F51 C~2kOl 2016 01 13.51102 11 37 37.158 +12 45 07.82 22.5G 531942 F51 C~2kOl 2016 01 13.52270 11 37 37.118 +12 45 09.40 22.3G 531942 F51 C~2kOl 2016 03 01.41635 11 30 22.573 +14 29 48.42 22.0G 531942 F51 C~2kOl 2016 03 11.35321 11 28 01.688 +14 51 38.57 23.0G 531942 F51 C~2kOl 2016 03 11.36547 11 28 01.459 +14 51 40.51 22.0G 531942 F51 C~2kOl 2016 03 11.37782 11 28 01.270 +14 51 41.81 22.1G 531942 F51 C~2kOl 2016 03 11.39016 11 28 01.103 +14 51 43.32 21.4G 531942 F51 C~2kOl 2016 03 30.31616 11 23 38.317 +15 26 38.35 22.0G 531942 F51 C~2kOl 2016 03 30.32974 11 23 38.139 +15 26 39.75 22.0G 531942 F51 C~2kOl 2016 03 30.34330 11 23 37.954 +15 26 41.01 22.2G 531942 F51 C~2kOl 2016 04 22.35435 11 19 32.370 +15 51 51.05 21.5G 531942 F51 C~2kOl 2016 04 22.36716 11 19 32.241 +15 51 51.12 22.0G 531942 F51 C~2kOl 2016 04 22.37981 11 19 32.167 +15 51 51.28 21.2G 531942 F51 C~2kOl 2017 01 04.58067 12 28 01.033 +10 28 22.55 22.3G 531942 F51 C~2kOl 2017 01 04.59182 12 28 01.104 +10 28 23.88 21.3G 531942 F51 C~2kOl 2017 01 04.60295 12 28 01.162 +10 28 24.07 22.8G 531942 F51 C~2kOl 2017 01 04.61409 12 28 01.193 +10 28 25.11 21.7G 531942 F51 C~2kOl 2017 02 24.44822 12 25 23.602 +12 08 50.82 22.3G 531942 F51 C~2kOl 2017 02 24.46075 12 25 23.468 +12 08 52.72 22.2G 531942 F51 C~2kOl 2017 02 24.47331 12 25 23.327 +12 08 54.49 22.4G 531942 F51 C~2kOl 2017 02 24.56884 12 25 22.264 +12 09 08.15 22.3G 531942 F51 C~2kOl 2017 05 11.38275 12 10 06.572 +14 05 00.96 22.0G 531942 F51 C~2kOl 2017 05 26.17408 12 09 05.44 +14 00 42.3 21.9R 531942 G37 C~2GiZ 2017 05 26.24021 12 09 05.32 +14 00 39.8 531942 G37 C~2GiZ 2018 04 12.34020 13 08 02.044 +11 05 45.48 21.6G 531942 F51 C~2kOl 2018 04 12.35318 13 08 01.879 +11 05 46.87 22.0G 531942 F51 C~2kOl 2018 04 12.37906 13 08 01.489 +11 05 49.45 21.7G 531942 F51 C~2kOl 2019 04 02.52611 14 00 48.016 +07 43 58.40 22.0w 531942 F51 C~325O 2019 04 02.53770 14 00 47.866 +07 43 59.76 22.3w 531942 F51 C~325O 2019 04 02.54931 14 00 47.718 +07 44 00.64 22.0w 531942 F51 C~325O 2019 04 07.52885 13 59 42.200 +07 53 36.59 22.2w 531942 F51 C~331k 2019 04 07.54119 13 59 42.038 +07 53 37.98 22.1w 531942 F51 C~331k 2019 04 07.55347 13 59 41.859 +07 53 39.47 21.8w 531942 F51 C~331k
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 -0.24 0.00 -0.14
2 0.9775 0.00 -0.19 0.00 -0.25
3 0.9776 0.00 0.29 0.00 0.07
4 1.9606 0.00 -0.33 0.00 -0.13
5 1.9659 0.00 0.10 0.00 -0.04
6 1.9659 0.00 0.05 0.00 -0.11
7 1.9660 0.00 -0.12 0.00 -0.17
8 2.0311 0.00 -0.07 0.00 -0.14
9 2.0311 0.00 0.11 0.00 -0.13
10 2.0312 0.00 0.08 0.00 -0.01
11 2.0337 0.00 -0.09 0.00 0.05
12 2.0337 0.00 -0.14 0.00 0.03
13 2.0337 0.00 -0.03 0.00 0.06
14 2.0392 0.00 -0.03 0.00 0.11
15 2.0392 0.00 0.02 0.00 0.02
16 2.0392 0.00 -0.08 0.00 0.05
17 2.0502 0.00 -0.09 0.00 0.09
18 2.0502 0.00 -0.03 0.00 0.02
19 2.0502 0.00 -0.02 0.00 0.10
20 2.0546 0.00 0.02 0.00 0.10
21 2.0546 0.00 0.08 0.00 0.03
22 2.0546 0.00 0.45 0.00 0.16
23 2.1075 0.00 -0.04 0.00 0.19
24 2.1075 0.00 0.16 0.00 -0.07
25 2.1075 0.00 -0.03 0.00 -0.04
26 2.1076 0.00 0.16 0.00 -0.06
27 3.1125 0.00 0.05 0.00 -0.01
28 3.9785 0.00 -0.05 0.00 0.33
29 3.9916 0.00 -0.04 0.00 -0.08
30 3.9917 0.00 0.06 0.00 0.18
31 3.9917 0.00 -0.43 0.00 0.17
32 3.9971 0.00 0.13 0.00 -0.08
33 3.9972 0.00 0.11 0.00 0.20
34 3.9972 0.00 0.02 0.00 0.28
35 3.9972 0.00 0.02 0.00 0.29
36 4.0244 0.00 0.11 0.00 0.27
37 4.0245 0.00 -0.02 0.00 -0.19
38 4.0245 0.00 0.24 0.00 0.06
39 4.8955 0.00 -0.09 0.00 -0.04
40 4.8955 0.00 -0.05 0.00 -0.01
41 4.8983 0.00 -0.21 0.00 0.01
42 4.9719 0.00 0.04 0.00 -0.04
43 4.9719 0.00 0.12 0.00 -0.25
44 4.9720 0.00 0.19 0.00 -0.35
45 4.9720 0.00 0.02 0.00 0.00
46 5.1031 0.00 -0.15 0.00 0.01
47 5.1303 0.00 0.56 0.00 -0.10
48 5.1304 0.00 -0.17 0.00 0.28
49 5.1304 0.00 -0.29 0.00 0.02
50 5.1304 0.00 -0.08 0.00 -0.04
51 5.1822 0.00 -0.11 0.00 -0.11
52 5.1823 0.00 -0.08 0.00 0.03
53 5.1823 0.00 -0.15 0.00 0.02
54 5.2453 0.00 0.03 0.00 0.00
55 5.2453 0.00 -0.33 0.00 -0.40
56 5.2454 0.00 0.12 0.00 -0.70
57 5.9496 0.00 -0.07 0.00 0.00
58 5.9496 0.00 0.10 0.00 0.52
59 5.9496 0.00 0.08 0.00 -0.10
60 5.9497 0.00 -0.35 0.00 0.12
61 6.0888 0.00 -0.14 0.00 -0.02
62 6.0889 0.00 -0.07 0.00 0.07
63 6.0889 0.00 -0.09 0.00 0.02
64 6.0892 0.00 -0.06 0.00 -0.12
65 6.2967 0.00 -0.17 0.00 -0.44
66 6.3372 0.00 0.16 0.00 0.16
67 6.3374 0.00 0.38 0.00 0.14
68 7.2165 0.00 -0.09 0.00 -0.04
69 7.2166 0.00 0.25 0.00 0.09
70 7.2166 0.00 -0.00 0.00 0.17
71 8.1890 0.00 -0.07 0.00 0.16
72 8.1890 0.00 -0.04 0.00 0.14
73 8.1890 0.00 0.04 0.00 -0.36
74 8.2027 0.00 0.02 0.00 -0.04
75 8.2027 0.00 0.14 0.00 -0.03
76 8.2027 0.00 -0.01 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.
531942 quality flag:3 Type: CENTAURR CENTAURR CENTAURR axisobj 17.119 17.119 17.119 ecceobj 0.372 0.372 0.372 incobj 18.534 18.534 18.534 qmin 9.426 10.194 10.584 qmax 26.540 23.717 25.346 amean 16.718 16.815 17.210 amin 14.678 16.596 16.611 amax 18.594 17.119 18.372 emean 0.382 0.358 0.355 emin 0.307 0.311 0.312 emax 0.428 0.396 0.403 imean 14.021 16.110 16.215 imin 11.135 15.433 14.980 imax 17.176 17.176 18.000 excite_mean 0.453 0.453 0.452 fracstop 0.018 0.016 0.011 cjmean 3.137 3.130 3.105 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 129.8 135.9 184.0 kozaiamp 177.7 93.1 141.6