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: 650031 # Created Wed Dec 25 02:07:45 2024 # Orbit generated by ELGB # -->Covariance matrix from a Bernstein fit # Fitting 105 observations of 105 # Arc: 19.21y # First observation: 1998/09/22 # Last observation: 2017/12/08 # Chi-squared of fit: 74.85 DOF: 204 RMS: 0.15 # Min/Max residuals: -0.62 0.38 # Exact a, adot, b, bdot, g, gdot: 1.978123E-05 3.579092E-02 -1.097137E-06 -2.125266E-03 2.801578E-02 -9.900805E-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 -17.304974 45.038484 0.712886 -0.206842 -0.663130 2451078.922237 # Heliocentric elements and errors Epoch: 2451078.5000 = 1998/09/22 Mean Anomaly: 357.89029 +/- 0.000 Argument of Peri: 265.77646 +/- 0.000 Long of Asc Node: 146.34762 +/- 0.000 Inclination: 17.36085 +/- 0.000 Eccentricity: 0.51680426 +/- 0.0000 Semi-Major Axis: 75.03723752 +/- 0.0000 Time of Perihelion: 2452469.8430 +/- 0.0 Perihelion: 36.25767362 +/- 0.0000 Aphelion: 113.81680142 +/- 0.0000 Period (y) 650.0151 +/- 0.00 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 25.08410002 +/- 0.0000 Ecliptic Y 24.10034518 +/- 0.0000 Ecliptic Z -10.61753755 +/- 0.0000 Ecliptic XDOT -0.00258374 +/- 0.0000 Ecliptic YDOT 0.00237157 +/- 0.0000 Ecliptic ZDOT -0.00016955 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 36.36994942 +/- 0.0000 Geocenter to KBO 35.69421604 +/- 0.0000 # Hcoef: 6.80
The following table shows the complete astrometric record for 650031. 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 (650031) followed by the observatory code and reference code for the source of the astrometry.
1998 09 22.421506 03 10 17.49 -00 14 24.8 22.2V 650031 645 C~2POS 1998 09 22.422336 03 10 17.48 -00 14 24.8 21.9V 650031 645 C~2POS 1998 09 22.424823 03 10 17.48 -00 14 24.8 22.8V 650031 645 C~2POS 1998 09 25.413279 03 10 08.77 -00 16 09.9 22.1V 650031 645 C~2POS 1998 09 25.414108 03 10 08.77 -00 16 09.9 21.9V 650031 645 C~2POS 1998 11 15.271311 03 06 20.84 -00 41 18.1 22.6V 650031 645 C~2POS 1998 11 15.272140 03 06 20.82 -00 41 18.1 21.7V 650031 645 C~2POS 1998 11 15.274626 03 06 20.82 -00 41 18.1 23.2V 650031 645 C~2POS 1998 11 19.260239 03 06 00.38 -00 42 30.2 22.0V 650031 645 C~2POS 1998 11 19.261068 03 06 00.36 -00 42 30.1 21.6V 650031 645 C~2POS 1998 11 19.263556 03 06 00.35 -00 42 30.3 22.6V 650031 645 C~2POS 1998 11 21.254604 03 05 50.21 -00 43 02.6 22.0V 650031 645 C~2POS 1998 11 21.255433 03 05 50.21 -00 43 02.6 22.5V 650031 645 C~2POS 1998 11 21.257921 03 05 50.21 -00 43 02.7 22.6V 650031 645 C~2POS 2000 11 18.249057 03 22 15.57 +00 13 28.0 22.1V 650031 645 C~2POS 2000 11 18.249887 03 22 15.56 +00 13 28.2 22.0V 650031 645 C~2POS 2000 11 18.252375 03 22 15.56 +00 13 27.9 22.7V 650031 645 C~2POS 2001 09 18.467236 03 34 33.82 +01 10 42.4 22.4V 650031 645 C~2POS 2001 09 18.468065 03 34 33.82 +01 10 42.4 22.2V 650031 645 C~2POS 2001 09 18.470553 03 34 33.81 +01 10 42.2 22.4V 650031 645 C~2POS 2001 09 19.404140 03 34 31.96 +01 10 11.3 22.5V 650031 645 C~2POS 2001 09 19.404969 03 34 31.95 +01 10 11.2 22.2V 650031 645 C~2POS 2001 09 19.407457 03 34 31.96 +01 10 11.0 23.1V 650031 645 C~2POS 2001 09 21.380210 03 34 27.79 +01 09 05.2 22.0V 650031 645 C~2POS 2001 09 21.381039 03 34 27.78 +01 09 05.2 21.8V 650031 645 C~2POS 2001 09 21.383527 03 34 27.77 +01 09 05.2 22.7V 650031 645 C~2POS 2001 11 11.358202 03 31 00.70 +00 43 40.9 22.3V 650031 645 C~2POS 2001 11 11.359032 03 31 00.69 +00 43 41.0 21.9V 650031 645 C~2POS 2001 11 11.361519 03 31 00.69 +00 43 41.0 22.9V 650031 645 C~2POS 2001 11 21.314089 03 30 08.62 +00 40 33.6 21.8V 650031 645 C~2POS 2001 11 21.314918 03 30 08.61 +00 40 33.5 21.2V 650031 645 C~2POS 2001 11 21.317406 03 30 08.60 +00 40 33.5 22.4V 650031 645 C~2POS 2001 12 18.275836 03 27 58.05 +00 37 12.2 650031 645 C~2POS 2001 12 18.276665 03 27 58.05 +00 37 12.4 650031 645 C~2POS 2001 12 18.279153 03 27 58.06 +00 37 12.4 650031 645 C~2POS 2002 01 09.142651 03 26 43.66 +00 40 29.7 23.0V 650031 645 C~2POS 2002 01 09.143480 03 26 43.66 +00 40 29.7 22.4V 650031 645 C~2POS 2002 01 09.145968 03 26 43.66 +00 40 29.6 22.6V 650031 645 C~2POS 2002 01 13.155450 03 26 34.56 +00 41 40.4 22.2V 650031 645 C~2POS 2002 01 13.156279 03 26 34.56 +00 41 40.4 22.3V 650031 645 C~2POS 2002 01 13.158767 03 26 34.56 +00 41 40.5 22.6V 650031 645 C~2POS 2002 11 07.357643 03 39 30.70 +01 13 03.0 21.9V 650031 645 C~2POS 2002 11 07.358472 03 39 30.70 +01 13 03.0 22.1V 650031 645 C~2POS 2002 11 07.360960 03 39 30.70 +01 13 02.9 22.7V 650031 645 C~2POS 2010 11 10.55817 04 43 40.691 +04 44 49.02 22.9G 650031 F51 C~2rXq 2010 11 11.50737 04 43 36.147 +04 44 30.69 22.4G 650031 F51 C~2rXq 2011 10 23.45176 04 52 50.763 +05 16 14.63 22.7w 650031 F51 C~1w3o 2011 10 23.46663 04 52 50.708 +05 16 14.05 22.8w 650031 F51 C~1w3o 2011 10 23.48152 04 52 50.661 +05 16 13.63 22.8w 650031 F51 C~1w3o 2011 10 23.49646 04 52 50.600 +05 16 13.20 22.8w 650031 F51 C~1w3o 2011 12 01.34466 04 49 51.529 +05 04 37.23 22.7w 650031 F51 C~1w3o 2011 12 01.35853 04 49 51.443 +05 04 36.90 23.2w 650031 F51 C~1w3o 2011 12 01.37240 04 49 51.369 +05 04 37.07 23.1w 650031 F51 C~1w3o 2011 12 01.38618 04 49 51.304 +05 04 36.84 22.9w 650031 F51 C~1w3o 2011 12 16.38697 04 48 31.432 +05 03 08.22 22.2r 650031 F51 C~1w3o 2011 12 16.41305 04 48 31.293 +05 03 08.31 22.0i 650031 F51 C~1w3o 2012 11 08.54069 04 59 34.621 +05 34 13.61 21.9r 650031 F51 C~1w3o 2012 11 08.54700 04 59 34.538 +05 34 13.27 21.9r 650031 F51 C~1w3o 2012 11 08.55412 04 59 34.551 +05 34 13.82 21.4r 650031 F51 C~1w3o 2012 12 09.40336 04 56 57.854 +05 27 52.08 22.4w 650031 F51 C~1w3o 2013 01 08.28897 04 54 29.650 +05 29 18.81 22.7G 650031 F51 C~2rXq 2013 01 25.32233 04 53 27.847 +05 33 38.32 21.8G 650031 F51 C~2rXq 2013 11 29.52715 05 05 41.886 +05 52 49.22 24.1G 650031 F51 C~2rXq 2014 02 28.24889 05 00 26.654 +06 11 15.98 22.5G 650031 F51 C~2rXq 2014 11 20.55813 05 14 14.632 +06 17 33.72 21.6G 650031 F51 C~2rXq 2014 12 16.41670 05 11 59.758 +06 14 18.22 23.1G 650031 F51 C~2rXq 2014 12 16.42796 05 11 59.711 +06 14 18.17 22.4G 650031 F51 C~2rXq 2014 12 16.43923 05 11 59.660 +06 14 18.00 22.9G 650031 F51 C~2rXq 2015 01 15.37113 05 09 35.063 +06 17 26.05 22.5G 650031 F51 C~2rXq 2015 01 15.38353 05 09 35.009 +06 17 26.13 22.4G 650031 F51 C~2rXq 2015 01 15.39589 05 09 34.955 +06 17 26.32 22.3G 650031 F51 C~2rXq 2015 01 15.40826 05 09 34.901 +06 17 26.40 22.6G 650031 F51 C~2rXq 2015 01 17.35178 05 09 27.172 +06 17 54.11 22.4G 650031 F51 C~2rXq 2015 01 17.36574 05 09 27.121 +06 17 54.32 22.4G 650031 F51 C~2rXq 2015 01 17.37954 05 09 27.052 +06 17 54.38 22.5G 650031 F51 C~2rXq 2015 01 17.39334 05 09 27.003 +06 17 54.75 22.5G 650031 F51 C~2rXq 2015 02 13.24238 05 08 13.117 +06 26 59.51 23.3G 650031 F51 C~2rXq 2015 09 19.59047 05 24 24.580 +07 01 05.38 22.7G 650031 F51 C~2rXq 2015 10 08.52787 05 24 17.828 +06 53 40.17 22.4G 650031 F51 C~2rXq 2015 10 14.56583 05 24 07.786 +06 51 20.89 23.5G 650031 F51 C~2rXq 2015 11 17.47590 05 22 11.568 +06 40 31.43 23.3G 650031 F51 C~2rXq 2015 12 03.49812 05 20 51.873 +06 37 37.65 22.5G 650031 F51 C~2rXq 2015 12 05.41947 05 20 41.790 +06 37 24.32 22.7G 650031 F51 C~2rXq 2015 12 05.43189 05 20 41.721 +06 37 24.13 22.5G 650031 F51 C~2rXq 2015 12 05.44441 05 20 41.668 +06 37 24.17 22.5G 650031 F51 C~2rXq 2015 12 31.46920 05 18 25.200 +06 37 18.89 23.3G 650031 F51 C~2rXq 2016 01 01.39671 05 18 20.651 +06 37 24.69 23.0G 650031 F51 C~2rXq 2016 01 11.34673 05 17 33.819 +06 38 55.19 19.6G 650031 F51 C~2rXq 2016 02 06.33449 05 16 03.405 +06 46 22.32 22.8G 650031 F51 C~2rXq 2016 02 06.34527 05 16 03.389 +06 46 22.51 22.7G 650031 F51 C~2rXq 2016 02 06.35609 05 16 03.344 +06 46 22.70 23.2G 650031 F51 C~2rXq 2016 02 06.36689 05 16 03.322 +06 46 22.81 22.5G 650031 F51 C~2rXq 2016 03 05.27942 05 15 37.895 +06 58 34.78 22.4G 650031 F51 C~2rXq 2016 11 28.53473 05 28 50.903 +06 59 47.58 22.8G 650031 F51 C~2rXq 2016 12 22.36554 05 26 45.671 +06 58 26.45 22.8G 650031 F51 C~2rXq 2016 12 22.39131 05 26 45.521 +06 58 26.54 22.1G 650031 F51 C~2rXq 2017 01 20.39755 05 24 29.040 +07 02 51.36 22.7G 650031 F51 C~2rXq 2017 01 20.40935 05 24 28.987 +07 02 51.65 22.6G 650031 F51 C~2rXq 2017 01 20.42114 05 24 28.937 +07 02 51.68 22.5G 650031 F51 C~2rXq 2017 01 20.43292 05 24 28.888 +07 02 51.83 23.2G 650031 F51 C~2rXq 2017 01 28.32170 05 24 00.611 +07 05 08.78 22.6G 650031 F51 C~2rXq 2017 11 24.50690 05 36 44.202 +07 21 19.27 21.3G 650031 F51 C~2rXq 2017 11 24.52000 05 36 44.139 +07 21 19.08 21.6G 650031 F51 C~2rXq 2017 11 24.54622 05 36 44.030 +07 21 19.25 21.8G 650031 F51 C~2rXq 2017 12 08.43778 05 35 33.720 +07 19 39.76 23.8G 650031 F51 C~2rXq
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 0.09 0.00 0.00
2 0.0000 0.00 -0.03 0.00 0.03
3 0.0000 0.00 0.08 0.00 0.12
4 0.0082 0.00 -0.00 0.00 0.09
5 0.0082 0.00 0.04 0.00 0.12
6 0.1474 0.00 0.27 0.00 0.03
7 0.1474 0.00 0.04 0.00 0.05
8 0.1474 0.00 0.23 0.00 0.09
9 0.1584 0.00 0.17 0.00 -0.03
10 0.1584 0.00 -0.06 0.00 0.08
11 0.1584 0.00 -0.02 0.00 -0.08
12 0.1638 0.00 -0.32 0.00 -0.04
13 0.1638 0.00 -0.26 0.00 -0.03
14 0.1638 0.00 -0.07 0.00 -0.09
15 2.1570 0.00 0.08 0.00 0.01
16 2.1570 0.00 -0.00 0.00 0.22
17 2.1570 0.00 0.19 0.00 -0.03
18 2.9899 0.00 0.02 0.00 0.05
19 2.9899 0.00 0.04 0.00 0.08
20 2.9899 0.00 -0.03 0.00 -0.04
21 2.9924 0.00 -0.10 0.00 0.07
22 2.9924 0.00 -0.23 0.00 0.00
23 2.9924 0.00 0.00 0.00 -0.12
24 2.9978 0.00 0.22 0.00 -0.15
25 2.9978 0.00 0.10 0.00 -0.12
26 2.9978 0.00 0.04 0.00 -0.04
27 3.1374 0.00 0.13 0.00 -0.09
28 3.1374 0.00 0.05 0.00 0.03
29 3.1374 0.00 0.25 0.00 0.09
30 3.1647 0.00 0.07 0.00 0.09
31 3.1647 0.00 -0.02 0.00 -0.00
32 3.1647 0.00 0.03 0.00 0.04
33 3.2385 0.00 -0.01 0.00 -0.09
34 3.2385 0.00 0.04 0.00 0.11
35 3.2385 0.00 0.35 0.00 0.10
36 3.2983 0.00 -0.53 0.00 -0.10
37 3.2983 0.00 -0.50 0.00 -0.12
38 3.2984 0.00 -0.40 0.00 -0.26
39 3.3093 0.00 -0.11 0.00 -0.00
40 3.3093 0.00 -0.09 0.00 -0.02
41 3.3093 0.00 -0.01 0.00 0.03
42 4.1258 0.00 -0.22 0.00 -0.14
43 4.1258 0.00 -0.15 0.00 -0.12
44 4.1258 0.00 0.04 0.00 -0.16
45 12.1345 0.00 0.24 0.00 0.11
46 12.1371 0.00 0.17 0.00 -0.05
47 13.0843 0.00 0.02 0.00 0.38
48 13.0843 0.00 -0.02 0.00 0.16
49 13.0844 0.00 0.05 0.00 0.09
50 13.0844 0.00 -0.07 0.00 0.02
51 13.1908 0.00 -0.02 0.00 0.06
52 13.1908 0.00 -0.19 0.00 -0.13
53 13.1908 0.00 -0.17 0.00 0.17
54 13.1909 0.00 -0.03 0.00 0.08
55 13.2319 0.00 0.12 0.00 -0.14
56 13.2320 0.00 0.12 0.00 -0.00
57 14.1304 0.00 0.19 0.00 -0.31
58 14.1304 0.00 -0.62 0.00 -0.53
59 14.1304 0.00 0.07 0.00 0.15
60 14.2149 0.00 -0.04 0.00 0.20
61 14.2967 0.00 -0.14 0.00 -0.18
62 14.3433 0.00 0.14 0.00 0.30
63 15.1871 0.00 0.16 0.00 -0.01
64 15.4355 0.00 0.06 0.00 -0.07
65 16.1619 0.00 -0.09 0.00 0.11
66 16.2327 0.00 -0.17 0.00 0.09
67 16.2327 0.00 0.04 0.00 0.06
68 16.2328 0.00 0.19 0.00 -0.09
69 16.3147 0.00 0.12 0.00 0.07
70 16.3147 0.00 0.08 0.00 -0.02
71 16.3148 0.00 0.04 0.00 0.01
72 16.3148 0.00 -0.01 0.00 -0.08
73 16.3201 0.00 0.10 0.00 0.05
74 16.3202 0.00 0.17 0.00 0.06
75 16.3202 0.00 -0.03 0.00 -0.08
76 16.3203 0.00 0.06 0.00 0.08
77 16.3938 0.00 0.07 0.00 0.05
78 16.9916 0.00 -0.02 0.00 0.06
79 17.0434 0.00 -0.09 0.00 0.06
80 17.0599 0.00 -0.21 0.00 0.04
81 17.1528 0.00 0.14 0.00 -0.17
82 17.1967 0.00 -0.06 0.00 -0.05
83 17.2019 0.00 -0.13 0.00 -0.00
84 17.2019 0.00 -0.17 0.00 -0.11
85 17.2020 0.00 0.04 0.00 0.01
86 17.2732 0.00 -0.38 0.00 0.15
87 17.2758 0.00 0.26 0.00 -0.04
88 17.3030 0.00 0.17 0.00 -0.17
89 17.3742 0.00 -0.04 0.00 0.09
90 17.3742 0.00 0.12 0.00 0.04
91 17.3742 0.00 -0.16 0.00 -0.01
92 17.3743 0.00 -0.10 0.00 -0.14
93 17.4507 0.00 -0.06 0.00 0.04
94 18.1851 0.00 0.04 0.00 -0.10
95 18.2504 0.00 0.02 0.00 -0.09
96 18.2504 0.00 -0.17 0.00 -0.06
97 18.3298 0.00 0.20 0.00 -0.07
98 18.3299 0.00 0.11 0.00 0.04
99 18.3299 0.00 0.06 0.00 -0.12
100 18.3299 0.00 0.02 0.00 -0.15
101 18.3515 0.00 0.18 0.00 0.00
102 19.1734 0.00 -0.21 0.00 0.00
103 19.1734 0.00 -0.19 0.00 -0.06
104 19.1735 0.00 0.11 0.00 0.38
105 19.2115 0.00 0.01 0.00 0.17
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.
650031 quality flag:3 Type: SCATNEAR SCATNEAR SCATNEAR axisobj 75.434 75.433 75.434 ecceobj 0.519 0.519 0.519 incobj 17.364 17.364 17.364 qmin 35.483 35.522 35.482 qmax 115.977 114.614 114.615 amean 74.290 73.993 74.024 amin 72.978 72.984 72.966 amax 76.178 75.477 75.497 emean 0.508 0.504 0.505 emin 0.490 0.489 0.490 emax 0.524 0.519 0.520 imean 16.820 16.960 16.906 imin 16.050 16.050 16.037 imax 17.759 17.993 17.740 excite_mean 0.584 0.582 0.583 fracstop 1.000 1.000 1.000 cjmean 2.996 2.997 2.996 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 204.0 204.4 199.6 kozaiamp 179.9 179.9 180.0