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: 687170
# Created Sun Dec 22 02:07:54 2024
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting 98 observations of 98
# Arc: 16.07y
# First observation: 2008/11/02
# Last observation: 2024/11/29
# Chi-squared of fit: 91.80 DOF: 190 RMS: 0.17
# Min/Max residuals: -0.47 0.72
# Exact a, adot, b, bdot, g, gdot:
2.060387E-05 6.368291E-02 -2.169394E-06 -1.110674E-02 5.008621E-02 -1.101729E-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
4.389200 18.908161 -0.364885 0.070789 -0.921748 2454772.856102
# Heliocentric elements and errors
Epoch: 2454772.5000 = 2008/11/02
Mean Anomaly: 246.34587 +/- 0.000
Argument of Peri: 287.36969 +/- 0.000
Long of Asc Node: 222.47028 +/- 0.000
Inclination: 10.81674 +/- 0.000
Eccentricity: 0.17509704 +/- 0.0000
Semi-Major Axis: 19.11037489 +/- 0.0000
Time of Perihelion: 2464406.0187 +/- 0.0
Perihelion: 15.76420486 +/- 0.0000
Aphelion: 22.45654492 +/- 0.0000
Period (y) 83.5434 +/- 0.00
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X 19.59080639 +/- 0.0000
Ecliptic Y 7.09139670 +/- 0.0000
Ecliptic Z 1.52794041 +/- 0.0000
Ecliptic XDOT -0.00164625 +/- 0.0000
Ecliptic YDOT 0.00311617 +/- 0.0000
Ecliptic ZDOT -0.00065155 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 20.89078166 +/- 0.0000
Geocenter to KBO 19.96567717 +/- 0.0000
# Hcoef: 9.72
The following table shows the complete astrometric record for 687170. 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 (687170) followed by the observatory code and reference code for the source of the astrometry.
2008 11 02.355348 01 02 59.59 +11 27 47.5 22.5V 687170 645 C~1SLn 2008 11 02.356177 01 02 59.59 +11 27 47.4 22.2V 687170 645 C~1SLn 2008 11 02.358665 01 02 59.57 +11 27 47.3 23.6V 687170 645 C~1SLn 2010 11 01.29522 01 33 33.952 +13 03 07.11 22.7G 687170 F51 C~2r7L 2010 11 01.31082 01 33 33.797 +13 03 06.46 22.6G 687170 F51 C~2r7L 2010 11 01.32926 01 33 33.624 +13 03 05.36 23.2G 687170 F51 C~2r7L 2011 08 29.52378 01 57 34.729 +14 35 44.64 22.8r 687170 568 C~0qBd 2011 08 29.56781 01 57 34.534 +14 35 43.67 22.9r 687170 568 C~0qBd 2011 08 29.61470 01 57 34.343 +14 35 42.59 22.9r 687170 568 C~0qBd 2011 09 05.55403 01 57 02.688 +14 32 44.42 22.6r 687170 568 C~0qBd 2011 10 24.41192 01 50 39.869 +13 54 31.38 22.6r 687170 568 C~0qBd 2011 10 24.43329 01 50 39.669 +13 54 30.16 22.6r 687170 568 C~0qBd 2011 10 24.45467 01 50 39.467 +13 54 28.85 22.6r 687170 568 C~0qBd 2011 10 24.47598 01 50 39.267 +13 54 27.68 22.6r 687170 568 C~0qBd 2011 10 24.49734 01 50 39.070 +13 54 26.35 22.5r 687170 568 C~0qBd 2011 10 24.51878 01 50 38.864 +13 54 25.16 22.6r 687170 568 C~0qBd 2011 10 28.30888 01 50 03.916 +13 50 42.62 22.3r 687170 568 C~0qBd 2011 10 28.48864 01 50 02.228 +13 50 32.00 22.5r 687170 568 C~0qBd 2011 10 30.53322 01 49 43.457 +13 48 31.33 22.6r 687170 568 C~0qBd 2011 10 31.51590 01 49 34.481 +13 47 33.30 22.4r 687170 568 C~0qBd 2011 11 24.24514 01 46 15.827 +13 25 07.81 22.7r 687170 568 C~0qBd 2011 11 26.46510 01 45 59.909 +13 23 13.04 687170 568 C~0qBd 2012 01 25.25212 01 44 01.928 +12 58 28.59 22.9r 687170 568 C~0qBd 2012 01 26.23689 01 44 05.667 +12 58 35.77 687170 568 C~0qBd 2012 01 27.29405 01 44 09.873 +12 58 44.53 23.0r 687170 568 C~0qBd 2012 02 15.25232 01 46 00.063 +13 04 42.69 22.9r 687170 568 C~0qBd 2012 08 23.53769 02 13 55.018 +15 15 10.94 22.9r 687170 568 C~0qBd 2012 08 24.57339 02 13 52.461 +15 14 55.28 22.8r 687170 568 C~0qBd 2012 10 17.40813 02 07 59.975 +14 40 38.36 22.6r 687170 568 C~0qBe 2012 10 17.42550 02 07 59.808 +14 40 37.37 22.6r 687170 568 C~0qBe 2012 10 20.46016 02 07 31.588 +14 37 48.92 22.4r 687170 568 C~0qBe 2012 10 20.50496 02 07 31.159 +14 37 46.43 22.6r 687170 568 C~0qBe 2012 10 21.31465 02 07 23.618 +14 37 01.02 22.6r 687170 568 C~0qBe 2012 10 21.34035 02 07 23.375 +14 36 59.61 22.6r 687170 568 C~0qBe 2012 10 21.36603 02 07 23.133 +14 36 58.12 22.6r 687170 568 C~0qBe 2012 11 02.33506 02 05 30.693 +14 25 35.01 21.7G 687170 F51 C~2r7L 2012 11 07.29076 02 04 44.836 +14 20 50.11 22.8G 687170 F51 C~2r7L 2013 01 14.35870 01 59 04.855 +13 37 58.02 22.8r 687170 568 C~43yM 2013 02 02.24144 01 59 58.622 +13 38 57.75 687170 568 C~43yM 2013 02 03.24708 02 00 03.430 +13 39 11.60 687170 568 C~43yM 2013 02 17.26070 02 01 29.713 +13 44 10.35 22.6r 687170 568 C~43yM 2013 07 13.59198 02 28 43.843 +15 44 39.19 22.6G 687170 F51 C~2r7L 2013 09 06.57920 02 29 42.59 +15 45 05.1 687170 568 C~43yM 2013 09 09.40907 02 29 30.22 +15 43 50.5 687170 568 C~43yM 2013 09 09.47309 02 29 29.93 +15 43 48.7 687170 568 C~43yM 2014 07 29.60798 02 46 29.616 +16 19 16.30 21.7G 687170 F51 C~2r7L 2014 11 17.48513 02 37 18.676 +15 22 52.76 22.6G 687170 F51 C~2r7L 2014 11 21.45782 02 36 41.547 +15 19 25.56 23.0G 687170 F51 C~2r7L 2014 12 13.34360 02 33 43.784 +15 02 26.44 22.8G 687170 F51 C~2r7L 2014 12 13.35656 02 33 43.675 +15 02 25.74 23.5G 687170 F51 C~2r7L 2014 12 13.36949 02 33 43.578 +15 02 25.45 22.5G 687170 F51 C~2r7L 2014 12 13.38248 02 33 43.518 +15 02 25.03 23.0G 687170 F51 C~2r7L 2015 01 22.23121 02 31 38.121 +14 47 12.64 22.9G 687170 F51 C~2r7L 2015 01 22.24657 02 31 38.143 +14 47 12.51 22.6G 687170 F51 C~2r7L 2015 01 22.26190 02 31 38.143 +14 47 12.55 22.9G 687170 F51 C~2r7L 2015 01 22.27730 02 31 38.156 +14 47 12.26 23.3G 687170 F51 C~2r7L 2015 09 09.47513 03 04 11.487 +16 41 09.15 22.9G 687170 F51 C~2r7L 2015 09 09.48741 03 04 11.444 +16 41 08.77 22.9G 687170 F51 C~2r7L 2015 09 09.49968 03 04 11.412 +16 41 08.34 22.9G 687170 F51 C~2r7L 2015 09 09.51197 03 04 11.360 +16 41 08.41 22.9G 687170 F51 C~2r7L 2015 10 10.60771 03 01 10.966 +16 23 31.45 22.4G 687170 F51 C~2r7L 2015 11 06.51232 02 57 00.102 +16 01 42.40 22.2G 687170 F51 C~2r7L 2015 11 08.36969 02 56 41.530 +16 00 07.37 23.2G 687170 F51 C~2r7L 2015 12 04.26071 02 52 33.353 +15 38 49.12 22.8G 687170 F51 C~2r7L 2015 12 04.27128 02 52 33.270 +15 38 48.42 22.2G 687170 F51 C~2r7L 2015 12 04.29253 02 52 33.086 +15 38 47.57 22.4G 687170 F51 C~2r7L 2016 10 07.45092 03 19 51.711 +16 47 37.24 22.3G 687170 F51 C~2r7L 2016 10 07.46394 03 19 51.629 +16 47 36.94 22.4G 687170 F51 C~2r7L 2016 10 07.47696 03 19 51.502 +16 47 36.16 22.5G 687170 F51 C~2r7L 2016 10 07.49004 03 19 51.418 +16 47 35.66 22.4G 687170 F51 C~2r7L 2016 10 25.55753 03 17 17.156 +16 34 26.77 23.1G 687170 F51 C~2r7L 2016 10 25.58470 03 17 16.882 +16 34 25.37 22.7G 687170 F51 C~2r7L 2017 10 28.56143 03 35 51.414 +16 49 55.58 22.1G 687170 F51 C~2r7L 2017 10 28.57382 03 35 51.285 +16 49 55.08 22.8G 687170 F51 C~2r7L 2017 10 28.58621 03 35 51.172 +16 49 54.44 22.7G 687170 F51 C~2r7L 2017 10 28.59852 03 35 51.066 +16 49 53.85 22.2G 687170 F51 C~2r7L 2017 11 17.52316 03 32 28.857 +16 34 46.45 22.0G 687170 F51 C~2r7L 2017 11 17.53526 03 32 28.748 +16 34 46.19 22.4G 687170 F51 C~2r7L 2017 12 07.27956 03 29 08.190 +16 20 32.45 21.0G 687170 F51 C~2r7L 2017 12 07.29330 03 29 08.010 +16 20 32.03 21.4G 687170 F51 C~2r7L 2017 12 07.30700 03 29 07.870 +16 20 31.32 22.0G 687170 F51 C~2r7L 2017 12 08.27996 03 28 58.637 +16 19 52.63 22.6w 687170 F51 C~2SCr 2017 12 08.29467 03 28 58.485 +16 19 51.81 22.6w 687170 F51 C~2SCr 2017 12 08.30941 03 28 58.370 +16 19 51.64 22.2w 687170 F51 C~2SCr 2017 12 09.26812 03 28 49.334 +16 19 13.99 22.2G 687170 F51 C~2r7L 2017 12 09.28183 03 28 49.183 +16 19 13.29 22.3G 687170 F51 C~2r7L 2017 12 09.29542 03 28 49.072 +16 19 12.88 22.3G 687170 F51 C~2r7L 2017 12 09.30903 03 28 48.930 +16 19 12.50 22.4G 687170 F51 C~2r7L 2018 12 18.085933 03 46 54.97 +16 27 42.2 22.4V 687170 H21 C~2rXq 2018 12 18.095059 03 46 54.87 +16 27 42.3 22.6V 687170 H21 C~2rXq 2018 12 18.108241 03 46 54.71 +16 27 41.6 22.8V 687170 H21 C~2rXq 2023 08 29.611407 05 40 30.935 +16 32 07.97 21.5w 687170 F52 C~77oB 2023 08 29.615905 05 40 30.962 +16 32 08.07 21.8w 687170 F52 C~77oB 2023 08 29.620389 05 40 30.988 +16 32 07.88 21.8w 687170 F52 C~77oB 2024 11 29.375516 06 00 01.927 +15 08 44.27 21.7w 687170 F52 C~8WPu 2024 11 29.386269 06 00 01.797 +15 08 43.70 21.6w 687170 F52 C~8WPu 2024 11 29.397024 06 00 01.700 +15 08 43.58 21.9w 687170 F52 C~8WPu 2024 11 29.407844 06 00 01.572 +15 08 43.68 21.9w 687170 F52 C~8WPu
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 0.01 0.00 -0.29
2 0.0000 0.00 0.11 0.00 -0.34
3 0.0000 0.00 0.11 0.00 -0.29
4 1.9957 0.00 0.30 0.00 -0.21
5 1.9958 0.00 0.06 0.00 0.07
6 1.9958 0.00 -0.07 0.00 0.07
7 2.8204 0.00 0.18 0.00 0.12
8 2.8206 0.00 0.00 0.00 0.12
9 2.8207 0.00 0.07 0.00 0.09
10 2.8397 0.00 0.02 0.00 -0.06
11 2.9735 0.00 -0.14 0.00 0.14
12 2.9735 0.00 -0.11 0.00 0.17
13 2.9736 0.00 -0.12 0.00 0.11
14 2.9736 0.00 -0.10 0.00 0.19
15 2.9737 0.00 -0.04 0.00 0.12
16 2.9738 0.00 -0.11 0.00 0.19
17 2.9841 0.00 -0.02 0.00 0.28
18 2.9846 0.00 -0.05 0.00 0.24
19 2.9902 0.00 -0.06 0.00 0.14
20 2.9929 0.00 -0.08 0.00 0.07
21 3.0579 0.00 -0.14 0.00 0.08
22 3.0640 0.00 -0.19 0.00 0.18
23 3.2276 0.00 0.16 0.00 -0.05
24 3.2303 0.00 0.09 0.00 0.05
25 3.2332 0.00 -0.05 0.00 0.05
26 3.2851 0.00 -0.13 0.00 0.14
27 3.8061 0.00 0.08 0.00 0.05
28 3.8089 0.00 -0.03 0.00 0.01
29 3.9563 0.00 0.10 0.00 0.05
30 3.9564 0.00 0.05 0.00 0.02
31 3.9647 0.00 0.08 0.00 -0.06
32 3.9648 0.00 0.05 0.00 -0.03
33 3.9670 0.00 0.03 0.00 -0.06
34 3.9671 0.00 0.05 0.00 -0.04
35 3.9672 0.00 0.09 0.00 -0.09
36 3.9999 0.00 0.24 0.00 0.07
37 4.0135 0.00 0.16 0.00 -0.31
38 4.1999 0.00 -0.13 0.00 -0.07
39 4.2516 0.00 -0.16 0.00 0.00
40 4.2543 0.00 -0.14 0.00 0.03
41 4.2927 0.00 -0.25 0.00 0.00
42 4.6933 0.00 -0.03 0.00 0.19
43 4.8439 0.00 0.01 0.00 0.20
44 4.8516 0.00 -0.38 0.00 0.28
45 4.8518 0.00 -0.17 0.00 0.21
46 5.7365 0.00 0.32 0.00 -0.23
47 6.0401 0.00 0.13 0.00 0.02
48 6.0509 0.00 0.34 0.00 -0.27
49 6.1109 0.00 0.14 0.00 -0.16
50 6.1109 0.00 -0.15 0.00 -0.33
51 6.1109 0.00 -0.26 0.00 -0.10
52 6.1110 0.00 0.19 0.00 0.00
53 6.2201 0.00 -0.07 0.00 -0.02
54 6.2201 0.00 0.10 0.00 -0.10
55 6.2201 0.00 -0.05 0.00 0.00
56 6.2202 0.00 -0.01 0.00 -0.23
57 6.8504 0.00 0.07 0.00 -0.03
58 6.8505 0.00 0.01 0.00 -0.14
59 6.8505 0.00 0.12 0.00 -0.29
60 6.8505 0.00 -0.06 0.00 0.05
61 6.9357 0.00 -0.04 0.00 0.03
62 7.0093 0.00 -0.30 0.00 -0.47
63 7.0144 0.00 -0.06 0.00 0.10
64 7.0853 0.00 -0.21 0.00 0.03
65 7.0853 0.00 -0.06 0.00 -0.19
66 7.0854 0.00 -0.00 0.00 -0.09
67 7.9291 0.00 0.01 0.00 0.03
68 7.9291 0.00 0.25 0.00 0.24
69 7.9291 0.00 -0.17 0.00 -0.03
70 7.9292 0.00 0.06 0.00 -0.01
71 7.9787 0.00 0.11 0.00 0.08
72 7.9787 0.00 -0.07 0.00 -0.03
73 8.9862 0.00 -0.04 0.00 -0.03
74 8.9862 0.00 -0.17 0.00 0.03
75 8.9863 0.00 -0.06 0.00 -0.05
76 8.9863 0.00 0.14 0.00 -0.09
77 9.0408 0.00 -0.28 0.00 -0.28
78 9.0409 0.00 0.01 0.00 0.02
79 9.0949 0.00 0.45 0.00 0.04
80 9.0950 0.00 -0.24 0.00 0.16
81 9.0950 0.00 -0.34 0.00 -0.01
82 9.0977 0.00 -0.03 0.00 -0.11
83 9.0977 0.00 -0.18 0.00 -0.36
84 9.0978 0.00 0.23 0.00 0.05
85 9.1004 0.00 0.08 0.00 -0.01
86 9.1004 0.00 -0.22 0.00 -0.18
87 9.1005 0.00 0.06 0.00 -0.07
88 9.1005 0.00 -0.12 0.00 0.08
89 10.1238 0.00 0.72 0.00 0.16
90 10.1239 0.00 0.49 0.00 0.56
91 10.1239 0.00 -0.08 0.00 0.28
92 14.8207 0.00 0.15 0.00 -0.06
93 14.8207 0.00 0.03 0.00 0.15
94 14.8207 0.00 -0.11 0.00 0.07
95 16.0740 0.00 0.05 0.00 0.15
96 16.0740 0.00 -0.19 0.00 -0.22
97 16.0740 0.00 0.07 0.00 -0.14
98 16.0741 0.00 -0.12 0.00 0.16
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.
687170 quality flag:3 Type: CENTAURR CENTAURR CENTAURR axisobj 19.180 19.180 19.180 ecceobj 0.173 0.173 0.173 incobj 10.788 10.788 10.788 qmin 14.710 14.396 14.645 qmax 23.601 24.526 23.733 amean 19.150 19.195 19.208 amin 18.743 18.809 18.716 amax 19.673 19.645 19.581 emean 0.186 0.193 0.177 emin 0.111 0.147 0.152 emax 0.223 0.251 0.228 imean 11.087 10.244 10.552 imin 9.007 7.758 9.118 imax 13.277 11.742 11.742 excite_mean 0.268 0.263 0.255 fracstop 0.022 0.049 0.052 cjmean 3.111 3.110 3.114 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 170.0 180.8 177.7 kozaiamp 179.4 178.9 179.2