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: 491768 # Created Sun Dec 22 02:07:12 2024 # Orbit generated by ELGB # -->Covariance matrix from a Bernstein fit # Fitting 82 observations of 82 # Arc: 5.11y # First observation: 2012/11/15 # Last observation: 2017/12/26 # Chi-squared of fit: 78.10 DOF: 158 RMS: 0.17 # Min/Max residuals: -0.47 0.51 # Exact a, adot, b, bdot, g, gdot: 1.709082E-05 2.585259E-02 6.297164E-07 9.860964E-04 2.498287E-02 -9.708720E-04 # 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 -15.857888 34.198161 -0.316904 -0.255135 -0.898477 2456246.601970 # Heliocentric elements and errors Epoch: 2456246.5000 = 2012/11/15 Mean Anomaly: 347.15261 +/- 0.000 Argument of Peri: 294.69502 +/- 0.000 Long of Asc Node: 116.12045 +/- 0.000 Inclination: 15.66447 +/- 0.000 Eccentricity: 0.12130631 +/- 0.0000 Semi-Major Axis: 46.37434202 +/- 0.0000 Time of Perihelion: 2460362.9938 +/- 0.0 Perihelion: 40.74884165 +/- 0.0000 Aphelion: 51.99984238 +/- 0.0000 Period (y) 315.8092 +/- 0.00 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 32.44224988 +/- 0.0000 Ecliptic Y 22.43150102 +/- 0.0000 Ecliptic Z -10.93760920 +/- 0.0000 Ecliptic XDOT -0.00165870 +/- 0.0000 Ecliptic YDOT 0.00230419 +/- 0.0000 Ecliptic ZDOT 0.00013316 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 40.93048694 +/- 0.0000 Geocenter to KBO 40.02748601 +/- 0.0000 # Hcoef: 7.32
The following table shows the complete astrometric record for 491768. 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 (491768) followed by the observatory code and reference code for the source of the astrometry.
2012 11 15.101192 02 28 57.16 -02 02 32.7 491768 W84 C~1Cs0 2012 11 15.103958 02 28 57.16 -02 02 32.7 491768 W84 C~1Cs0 2012 11 15.117720 02 28 57.11 -02 02 32.9 491768 W84 C~1Cs0 2012 12 08.193102 02 27 21.03 -02 05 35.4 491768 W84 C~1Cs0 2012 12 08.198611 02 27 21.02 -02 05 35.7 491768 W84 C~1Cs0 2014 08 19.41737 02 44 58.059 -00 18 44.84 22.8z 491768 W84 C~5204 2014 09 24.31448 02 43 49.921 -00 35 34.60 23.2i 491768 W84 C~5204 2014 09 27.285926 02 43 39.82 -00 37 04.1 23.7i 491768 W84 C~1Cs0 2014 09 27.289722 02 43 39.79 -00 37 04.0 22.6z 491768 W84 C~1Cs0 2014 10 03.32170 02 43 17.671 -00 40 05.43 23.3i 491768 W84 C~5204 2014 10 13.207384 02 42 37.25 -00 44 51.7 23.2i 491768 W84 C~1Cs0 2014 10 13.211181 02 42 37.24 -00 44 52.0 23.4z 491768 W84 C~1Cs0 2014 10 21.31576 02 42 01.120 -00 48 32.04 23.9r 491768 W84 C~5204 2014 10 22.120961 02 41 57.42 -00 48 52.7 23.9r 491768 W84 C~1Cs0 2014 10 22.127118 02 41 57.37 -00 48 52.9 23.2z 491768 W84 C~1Cs0 2014 10 29.103333 02 41 24.71 -00 51 44.9 23.1r 491768 W84 C~1Cs0 2014 10 29.105694 02 41 24.71 -00 51 44.9 23.0i 491768 W84 C~1Cs0 2014 10 29.109491 02 41 24.68 -00 51 45.0 23.4z 491768 W84 C~1Cs0 2014 11 03.218530 02 41 00.35 -00 53 39.2 23.2r 491768 W84 C~1Cs0 2014 11 03.220891 02 41 00.34 -00 53 39.2 23.6i 491768 W84 C~1Cs0 2014 11 03.224688 02 41 00.32 -00 53 39.4 22.7z 491768 W84 C~1Cs0 2015 08 15.391546 02 50 25.30 +00 14 59.2 23.3r 491768 W84 C~1h5g 2015 08 15.393899 02 50 25.30 +00 14 59.3 23.6i 491768 W84 C~1h5g 2015 08 15.397870 02 50 25.32 +00 14 59.3 23.2z 491768 W84 C~1h5g 2015 08 19.406308 02 50 25.20 +00 13 29.5 23.5i 491768 W84 C~1h5g 2015 08 19.410104 02 50 25.22 +00 13 29.5 23.3z 491768 W84 C~1h5g 2015 08 19.410278 02 50 25.22 +00 13 29.5 23.4z 491768 W84 C~1h5g 2015 08 24.361215 02 50 23.08 +00 11 31.1 23.5r 491768 W84 C~1h5g 2015 08 24.363588 02 50 23.09 +00 11 30.9 23.1i 491768 W84 C~1h5g 2015 08 24.367593 02 50 23.07 +00 11 30.9 22.8z 491768 W84 C~1h5g 2015 09 04.264988 02 50 10.62 +00 06 45.4 23.2z 491768 W84 C~1h5g 2015 11 03.174259 02 46 34.31 -00 20 53.8 23.3i 491768 W84 C~1h5g 2015 11 03.178229 02 46 34.27 -00 20 53.6 23.5z 491768 W84 C~1h5g 2015 11 29.215532 02 44 32.74 -00 27 32.2 23.5i 491768 W84 C~1h5g 2015 11 29.219502 02 44 32.71 -00 27 32.2 23.1z 491768 W84 C~1h5g 2015 12 09.108455 02 43 52.02 -00 28 25.0 24.8g 491768 W84 C~1h5g 2015 12 09.110671 02 43 52.02 -00 28 24.9 24.2r 491768 W84 C~1h5g 2015 12 09.113032 02 43 52.01 -00 28 24.9 23.4i 491768 W84 C~1h5g 2015 12 29.067500 02 42 48.09 -00 27 06.9 23.7r 491768 W84 C~1h5g 2015 12 29.069873 02 42 48.08 -00 27 06.8 23.5i 491768 W84 C~1h5g 2015 12 29.073843 02 42 48.07 -00 27 06.7 23.1z 491768 W84 C~1h5g 2016 09 29.206910 02 54 33.95 +00 26 49.3 24.0r 491768 W84 C~2AzG 2016 09 29.209271 02 54 33.93 +00 26 49.4 23.5i 491768 W84 C~2AzG 2016 09 29.215868 02 54 33.92 +00 26 49.0 23.3z 491768 W84 C~2AzG 2016 10 10.173299 02 53 52.10 +00 21 34.0 23.6r 491768 W84 C~2AzG 2016 11 03.109132 02 52 03.55 +00 11 31.6 23.4r 491768 W84 C~2AzG 2016 11 03.111493 02 52 03.55 +00 11 31.6 23.3i 491768 W84 C~2AzG 2016 11 10.109769 02 51 29.85 +00 09 13.2 22.7i 491768 W84 C~2AzG 2016 11 10.116400 02 51 29.84 +00 09 13.2 22.8z 491768 W84 C~2AzG 2016 11 17.189757 02 50 56.03 +00 07 15.9 23.0z 491768 W84 C~2AzG 2016 11 18.051065 02 50 51.97 +00 07 03.3 24.2g 491768 W84 C~2AzG 2016 11 18.053785 02 50 51.97 +00 07 03.1 23.4r 491768 W84 C~2AzG 2016 11 18.056146 02 50 51.96 +00 07 03.0 23.1i 491768 W84 C~2AzG 2016 11 18.062766 02 50 51.94 +00 07 03.0 22.9z 491768 W84 C~2AzG 2016 11 25.044734 02 50 19.62 +00 05 35.4 23.7r 491768 W84 C~2AzG 2016 11 25.047083 02 50 19.61 +00 05 35.5 23.2i 491768 W84 C~2AzG 2016 11 25.051065 02 50 19.59 +00 05 35.5 22.8z 491768 W84 C~2AzG 2016 11 29.13615 02 50 01.381 +00 04 56.18 22.9r 491768 W84 C~5204 2016 12 03.149514 02 49 44.08 +00 04 27.9 23.2r 491768 W84 C~2AzG 2016 12 03.151863 02 49 44.08 +00 04 27.9 23.2i 491768 W84 C~2AzG 2016 12 03.158472 02 49 44.06 +00 04 27.8 22.9z 491768 W84 C~2AzG 2016 12 17.090775 02 48 50.59 +00 04 03.7 23.6r 491768 W84 C~2AzG 2016 12 17.093137 02 48 50.59 +00 04 03.7 23.1i 491768 W84 C~2AzG 2016 12 17.097106 02 48 50.56 +00 04 03.7 23.1z 491768 W84 C~2AzG 2016 12 24.057326 02 48 28.46 +00 04 36.5 24.6g 491768 W84 C~2AzG 2016 12 24.060023 02 48 28.46 +00 04 36.4 23.6r 491768 W84 C~2AzG 2016 12 24.062384 02 48 28.45 +00 04 36.4 23.2i 491768 W84 C~2AzG 2016 12 24.068993 02 48 28.44 +00 04 36.4 23.1z 491768 W84 C~2AzG 2016 12 28.140579 02 48 17.17 +00 05 09.3 23.6r 491768 W84 C~2AzG 2016 12 28.149549 02 48 17.17 +00 05 09.5 23.2z 491768 W84 C~2AzG 2017 01 29.072743 02 47 39.53 +00 15 00.2 23.3i 491768 W84 C~2AzG 2017 01 29.079375 02 47 39.54 +00 15 00.6 23.0z 491768 W84 C~2AzG 2017 08 27.40776 03 01 16.126 +01 14 26.73 23.1r 491768 W84 C~5204 2017 09 01.40694 03 01 11.322 +01 12 21.80 22.8i 491768 W84 C~5204 2017 09 26.32426 03 00 15.643 +01 00 51.59 23.8r 491768 W84 C~5204 2017 11 22.16756 02 56 06.097 +00 38 50.04 22.0z 491768 W84 C~5204 2017 12 21.155469 02 54 07.830 +00 36 43.70 23.6r 491768 W84 C~2gZg 2017 12 21.157842 02 54 07.820 +00 36 43.70 23.3i 491768 W84 C~2gZg 2017 12 21.164462 02 54 07.810 +00 36 43.80 22.9z 491768 W84 C~2gZg 2017 12 26.080110 02 53 52.670 +00 37 12.20 23.7r 491768 W84 C~2gZg 2017 12 26.082471 02 53 52.660 +00 37 12.20 23.2i 491768 W84 C~2gZg 2017 12 26.086441 02 53 52.660 +00 37 12.20 22.7z 491768 W84 C~2gZg
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 -0.14 0.00 -0.05
2 0.0000 0.00 0.05 0.00 -0.01
3 0.0000 0.00 0.27 0.00 -0.01
4 0.0632 0.00 -0.16 0.00 0.34
5 0.0632 0.00 -0.01 0.00 0.04
6 1.7586 0.00 0.21 0.00 -0.36
7 1.8568 0.00 0.22 0.00 -0.28
8 1.8650 0.00 -0.05 0.00 0.03
9 1.8650 0.00 -0.30 0.00 0.25
10 1.8815 0.00 0.11 0.00 -0.32
11 1.9086 0.00 -0.01 0.00 0.17
12 1.9086 0.00 0.09 0.00 -0.02
13 1.9308 0.00 0.36 0.00 -0.09
14 1.9330 0.00 0.16 0.00 0.11
15 1.9330 0.00 -0.16 0.00 0.07
16 1.9521 0.00 -0.25 0.00 -0.18
17 1.9521 0.00 -0.08 0.00 -0.13
18 1.9521 0.00 -0.26 0.00 -0.14
19 1.9661 0.00 -0.07 0.00 -0.16
20 1.9661 0.00 -0.05 0.00 -0.11
21 1.9661 0.00 -0.08 0.00 -0.22
22 2.7469 0.00 0.07 0.00 -0.22
23 2.7469 0.00 0.07 0.00 -0.07
24 2.7469 0.00 0.36 0.00 0.02
25 2.7579 0.00 -0.32 0.00 -0.08
26 2.7579 0.00 -0.01 0.00 0.01
27 2.7579 0.00 -0.00 0.00 0.01
28 2.7714 0.00 -0.10 0.00 0.03
29 2.7714 0.00 0.07 0.00 -0.11
30 2.7714 0.00 -0.18 0.00 -0.01
31 2.8013 0.00 0.01 0.00 0.08
32 2.9653 0.00 0.24 0.00 0.14
33 2.9653 0.00 -0.07 0.00 0.42
34 3.0366 0.00 0.00 0.00 -0.05
35 3.0366 0.00 -0.19 0.00 -0.01
36 3.0637 0.00 -0.21 0.00 0.08
37 3.0637 0.00 -0.08 0.00 0.19
38 3.0637 0.00 -0.09 0.00 0.19
39 3.1183 0.00 0.12 0.00 0.09
40 3.1183 0.00 0.06 0.00 0.16
41 3.1183 0.00 0.06 0.00 0.22
42 3.8716 0.00 -0.07 0.00 0.12
43 3.8716 0.00 -0.24 0.00 0.28
44 3.8716 0.00 -0.04 0.00 0.08
45 3.9016 0.00 -0.26 0.00 0.16
46 3.9672 0.00 -0.03 0.00 -0.07
47 3.9672 0.00 0.14 0.00 -0.02
48 3.9863 0.00 -0.08 0.00 0.14
49 3.9864 0.00 0.26 0.00 0.26
50 4.0057 0.00 -0.17 0.00 0.14
51 4.0081 0.00 -0.25 0.00 0.12
52 4.0081 0.00 -0.06 0.00 -0.04
53 4.0081 0.00 -0.04 0.00 -0.10
54 4.0081 0.00 0.14 0.00 -0.01
55 4.0272 0.00 0.14 0.00 -0.07
56 4.0272 0.00 0.15 0.00 0.06
57 4.0272 0.00 0.13 0.00 0.10
58 4.0384 0.00 0.51 0.00 -0.47
59 4.0494 0.00 0.00 0.00 -0.07
60 4.0494 0.00 0.15 0.00 -0.06
61 4.0494 0.00 0.28 0.00 -0.12
62 4.0876 0.00 0.21 0.00 0.04
63 4.0876 0.00 0.33 0.00 0.04
64 4.0876 0.00 0.09 0.00 0.03
65 4.1067 0.00 -0.10 0.00 0.26
66 4.1067 0.00 0.03 0.00 0.14
67 4.1067 0.00 -0.02 0.00 0.12
68 4.1067 0.00 0.13 0.00 0.08
69 4.1178 0.00 -0.20 0.00 0.01
70 4.1179 0.00 0.16 0.00 0.12
71 4.2053 0.00 -0.26 0.00 -0.23
72 4.2053 0.00 -0.14 0.00 -0.01
73 4.7811 0.00 0.22 0.00 -0.22
74 4.7948 0.00 0.24 0.00 -0.30
75 4.8630 0.00 0.12 0.00 -0.37
76 5.0187 0.00 0.29 0.00 -0.21
77 5.0980 0.00 -0.21 0.00 0.08
78 5.0980 0.00 -0.24 0.00 0.07
79 5.0981 0.00 -0.06 0.00 0.14
80 5.1115 0.00 -0.22 0.00 0.00
81 5.1115 0.00 -0.26 0.00 -0.02
82 5.1115 0.00 -0.09 0.00 -0.04
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.
491768 quality flag:3 Type: SCATEXTD SCATEXTD SCATEXTD axisobj 46.536 46.536 46.536 ecceobj 0.124 0.124 0.124 incobj 15.667 15.667 15.667 qmin 40.068 40.068 40.072 qmax 52.523 52.512 52.524 amean 46.140 46.140 46.139 amin 45.760 45.760 45.760 amax 46.550 46.561 46.549 emean 0.116 0.116 0.116 emin 0.105 0.105 0.105 emax 0.128 0.128 0.128 imean 14.164 14.165 14.164 imin 13.801 13.801 13.801 imax 14.523 14.515 14.525 excite_mean 0.271 0.271 0.271 fracstop 1.000 1.000 1.000 cjmean 3.037 3.037 3.037 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 176.6 176.4 176.7 kozaiamp 179.9 179.9 179.9