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: 612891
# Created Sun Dec 22 02:07:47 2024
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting 90 observations of 90
# Arc: 19.09y
# First observation: 1999/10/13
# Last observation: 2018/11/14
# Chi-squared of fit: 218.66 DOF: 174 RMS: 0.28
# Min/Max residuals: -0.84 1.01
# Exact a, adot, b, bdot, g, gdot:
2.132426E-05 4.247896E-02 -1.043170E-06 -6.236933E-03 3.239244E-02 -3.402859E-03
# 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
3.426838 28.588218 0.154567 0.058233 -0.976152 2451464.858550
# Heliocentric elements and errors
Epoch: 2451464.5000 = 1999/10/13
Mean Anomaly: 354.47582 +/- 0.000
Argument of Peri: 173.86702 +/- 0.000
Long of Asc Node: 229.90329 +/- 0.000
Inclination: 8.95905 +/- 0.000
Eccentricity: 0.44018880 +/- 0.0000
Semi-Major Axis: 56.25498859 +/- 0.0000
Time of Perihelion: 2453829.3572 +/- 0.0
Perihelion: 31.49217285 +/- 0.0000
Aphelion: 81.01780434 +/- 0.0000
Period (y) 421.9391 +/- 0.00
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X 27.99898333 +/- 0.0000
Ecliptic Y 15.08086203 +/- 0.0000
Ecliptic Z 1.84527980 +/- 0.0000
Ecliptic XDOT -0.00194701 +/- 0.0000
Ecliptic YDOT 0.00303843 +/- 0.0000
Ecliptic ZDOT -0.00054333 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 31.85567402 +/- 0.0000
Geocenter to KBO 30.87148801 +/- 0.0000
# Hcoef: 7.90
The following table shows the complete astrometric record for 612891. 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 (612891) followed by the observatory code and reference code for the source of the astrometry.
1999 10 13.357807 01 41 13.78 +14 10 21.0 22.7V 612891 645 C~2JxB 1999 10 13.358637 01 41 13.78 +14 10 21.0 22.1V 612891 645 C~2JxB 1999 10 13.361124 01 41 13.77 +14 10 21.0 612891 645 C~2JxB 2000 11 30.283067 01 46 52.15 +14 14 12.2 22.6V 612891 645 C~2JxB 2000 11 30.283896 01 46 52.15 +14 14 12.3 22.2V 612891 645 C~2JxB 2000 11 30.286384 01 46 52.15 +14 14 12.2 23.8V 612891 645 C~2JxB 2004 10 15.32995 02 31 44.52 +16 33 39.0 22.6R 612891 695 Cm0609 2004 10 15.44108 02 31 43.88 +16 33 35.7 612891 695 Cm0609 2004 11 09.19462 02 29 16.97 +16 20 22.1 22.0R 612891 695 Cm0609 2004 11 09.28635 02 29 16.44 +16 20 18.8 612891 695 Cm0609 2004 11 20.32402 02 28 12.25 +16 14 16.8 22.8R 612891 568 Cm0609 2004 11 21.33267 02 28 06.64 +16 13 44.7 612891 568 Cm0609 2006 10 19.29748 02 52 10.30 +17 17 25.7 21.9R 612891 695 Ct0489 2006 10 20.22801 02 52 04.98 +17 16 58.9 612891 695 Ct0489 2006 10 20.35183 02 52 04.31 +17 16 56.0 612891 695 Ct0489 2007 11 09.25839 03 00 32.76 +17 27 17.6 612891 695 Cy4017 2007 11 09.34454 03 00 32.22 +17 27 15.0 612891 695 Cy4017 2008 12 21.25258 03 07 01.29 +17 26 38.1 21.8r 612891 695 C~0hkR 2008 12 21.33022 03 07 00.95 +17 26 36.4 21.4r 612891 695 C~0hkR 2010 10 09.34718 03 34 43.69 +18 27 24.1 22.5R 612891 688 C~0Nic 2010 10 09.43006 03 34 43.373 +18 27 22.16 22.0G 612891 F51 C~343m 2010 10 09.43422 03 34 43.34 +18 27 23.1 612891 688 C~0Nic 2010 10 09.44618 03 34 43.299 +18 27 22.34 22.5G 612891 F51 C~343m 2010 10 09.46231 03 34 43.221 +18 27 22.06 22.7G 612891 F51 C~343m 2010 10 09.47837 03 34 43.149 +18 27 21.77 22.3G 612891 F51 C~343m 2010 11 07.48051 03 32 06.199 +18 16 02.91 22.9G 612891 F51 C~343m 2010 11 07.49400 03 32 06.135 +18 16 02.35 23.2G 612891 F51 C~343m 2010 11 07.50872 03 32 06.023 +18 16 01.84 23.0G 612891 F51 C~343m 2010 11 07.52219 03 32 05.952 +18 16 01.69 22.2G 612891 F51 C~343m 2011 11 30.30645 03 40 12.533 +18 18 33.86 22.8G 612891 F51 C~343m 2011 11 30.31903 03 40 12.460 +18 18 33.22 22.6G 612891 F51 C~343m 2011 12 01.50122 03 40 05.200 +18 18 05.18 23.6G 612891 F51 C~343m 2012 12 10.27050 03 49 31.641 +18 24 41.72 23.4G 612891 F51 C~343m 2012 12 10.28596 03 49 31.573 +18 24 40.94 22.5G 612891 F51 C~343m 2012 12 10.31158 03 49 31.419 +18 24 40.20 21.8G 612891 F51 C~343m 2012 12 10.32708 03 49 31.336 +18 24 40.13 22.2G 612891 F51 C~343m 2013 10 28.61817 04 04 11.965 +18 47 58.90 22.7G 612891 F51 C~343m 2013 11 26.33303 04 01 19.156 +18 37 40.29 22.5G 612891 F51 C~343m 2013 11 26.34831 04 01 19.077 +18 37 39.99 22.1G 612891 F51 C~343m 2013 11 26.36364 04 01 18.968 +18 37 39.52 22.6G 612891 F51 C~343m 2013 11 26.37902 04 01 18.882 +18 37 39.72 22.6G 612891 F51 C~343m 2014 10 26.60650 04 14 37.875 +18 53 38.44 23.3G 612891 F51 C~343m 2014 10 26.61492 04 14 37.763 +18 53 37.77 22.9G 612891 F51 C~343m 2014 10 26.62329 04 14 37.735 +18 53 37.22 23.3G 612891 F51 C~343m 2014 10 26.63173 04 14 37.677 +18 53 37.19 22.3G 612891 F51 C~343m 2014 11 17.34634 04 12 33.468 +18 46 23.26 22.8G 612891 F51 C~343m 2014 11 17.35925 04 12 33.379 +18 46 22.98 22.8G 612891 F51 C~343m 2014 11 17.37212 04 12 33.311 +18 46 22.81 22.8G 612891 F51 C~343m 2014 11 17.38498 04 12 33.225 +18 46 22.53 22.8G 612891 F51 C~343m 2014 11 27.51979 04 11 29.537 +18 42 56.01 22.9G 612891 F51 C~343m 2014 11 27.53301 04 11 29.483 +18 42 56.02 23.0G 612891 F51 C~343m 2014 11 27.54626 04 11 29.357 +18 42 55.17 22.9G 612891 F51 C~343m 2015 01 22.33712 04 06 50.598 +18 29 12.74 22.9G 612891 F51 C~343m 2015 01 22.35107 04 06 50.551 +18 29 12.72 22.7G 612891 F51 C~343m 2015 01 22.36504 04 06 50.509 +18 29 12.54 23.3G 612891 F51 C~343m 2015 01 22.37892 04 06 50.479 +18 29 12.51 23.3G 612891 F51 C~343m 2015 01 24.31963 04 06 45.755 +18 29 00.83 22.6G 612891 F51 C~343m 2015 01 24.33416 04 06 45.763 +18 29 00.90 23.4G 612891 F51 C~343m 2015 01 24.34865 04 06 45.697 +18 29 00.49 23.0G 612891 F51 C~343m 2015 01 24.36318 04 06 45.687 +18 29 00.63 22.1G 612891 F51 C~343m 2015 08 21.61300 04 26 07.991 +19 08 14.44 23.1G 612891 F51 C~343m 2015 09 19.51851 04 26 37.640 +19 05 20.95 23.2G 612891 F51 C~343m 2015 10 24.42294 04 24 57.327 +18 57 05.19 23.2G 612891 F51 C~343m 2015 12 06.45860 04 20 45.518 +18 43 42.78 22.7G 612891 F51 C~343m 2015 12 06.47213 04 20 45.386 +18 43 42.10 22.9G 612891 F51 C~343m 2015 12 06.48566 04 20 45.342 +18 43 42.08 23.2G 612891 F51 C~343m 2015 12 06.49929 04 20 45.267 +18 43 41.58 22.4G 612891 F51 C~343m 2015 12 09.47844 04 20 26.687 +18 42 49.24 22.5G 612891 F51 C~343m 2015 12 09.49111 04 20 26.617 +18 42 48.84 22.4G 612891 F51 C~343m 2016 01 07.27211 04 17 48.792 +18 35 47.75 23.4G 612891 F51 C~343m 2016 01 08.22336 04 17 44.606 +18 35 36.96 23.0G 612891 F51 C~343m 2016 01 08.23688 04 17 44.575 +18 35 36.62 21.8G 612891 F51 C~343m 2016 01 08.25043 04 17 44.484 +18 35 36.69 23.0G 612891 F51 C~343m 2016 01 08.26398 04 17 44.400 +18 35 36.66 23.0G 612891 F51 C~343m 2016 10 26.59315 04 34 44.388 +18 56 55.11 23.3G 612891 F51 C~343m 2016 11 04.61004 04 33 58.469 +18 54 19.42 22.7G 612891 F51 C~343m 2017 01 26.32513 04 26 36.380 +18 35 33.60 22.5G 612891 F51 C~343m 2017 01 26.33819 04 26 36.363 +18 35 33.40 23.3G 612891 F51 C~343m 2017 01 26.35118 04 26 36.310 +18 35 33.54 23.7G 612891 F51 C~343m 2017 01 26.36407 04 26 36.257 +18 35 32.79 22.9G 612891 F51 C~343m 2017 10 30.60902 04 44 20.250 +18 54 35.47 23.4G 612891 F51 C~343m 2017 11 21.41005 04 42 18.570 +18 48 36.63 23.2G 612891 F51 C~343m 2017 12 20.31799 04 39 18.648 +18 41 20.63 23.1R 612891 G37 C~2Uv4 2017 12 20.39048 04 39 18.257 +18 41 19.48 612891 G37 C~2Uv4 2017 12 20.44443 04 39 17.894 +18 41 18.98 612891 G37 C~2Uv4 2017 12 22.49941 04 39 05.757 +18 40 52.44 22.7G 612891 F51 C~343m 2018 01 10.38163 04 37 26.338 +18 37 33.92 23.2G 612891 F51 C~343m 2018 11 14.343420 04 52 51.01 +18 47 43.0 23.2G 612891 705 C~2r9o 2018 11 14.386550 04 52 50.77 +18 47 42.4 23.0G 612891 705 C~2r9o 2018 11 14.453220 04 52 50.39 +18 47 40.8 22.7G 612891 705 C~2r9o
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 0.04 0.00 -0.43
2 0.0000 0.00 0.11 0.00 -0.40
3 0.0000 0.00 0.18 0.00 -0.31
4 1.1333 0.00 -0.12 0.00 -0.28
5 1.1333 0.00 -0.07 0.00 -0.15
6 1.1333 0.00 0.09 0.00 -0.17
7 5.0075 0.00 -0.13 0.00 0.09
8 5.0078 0.00 -0.13 0.00 0.12
9 5.0755 0.00 0.40 0.00 1.01
10 5.0758 0.00 0.80 0.00 0.74
11 5.1060 0.00 -0.30 0.00 0.01
12 5.1088 0.00 -0.04 0.00 0.20
13 7.0169 0.00 -0.27 0.00 0.17
14 7.0195 0.00 -0.81 0.00 -0.32
15 7.0198 0.00 -0.08 0.00 0.28
16 8.0736 0.00 -0.14 0.00 0.30
17 8.0739 0.00 -0.14 0.00 0.27
18 9.1907 0.00 -0.15 0.00 0.18
19 9.1909 0.00 -0.18 0.00 0.14
20 10.9897 0.00 -0.42 0.00 -0.32
21 10.9899 0.00 0.20 0.00 -0.66
22 10.9899 0.00 0.19 0.00 0.42
23 10.9900 0.00 0.17 0.00 -0.16
24 10.9900 0.00 0.09 0.00 -0.12
25 10.9901 0.00 0.10 0.00 -0.09
26 11.0695 0.00 0.01 0.00 0.06
27 11.0695 0.00 0.31 0.00 -0.15
28 11.0695 0.00 0.01 0.00 -0.28
29 11.0696 0.00 0.21 0.00 -0.08
30 12.1313 0.00 0.15 0.00 0.20
31 12.1313 0.00 0.23 0.00 -0.15
32 12.1345 0.00 0.23 0.00 -0.07
33 13.1606 0.00 -0.48 0.00 0.29
34 13.1607 0.00 -0.12 0.00 -0.17
35 13.1607 0.00 -0.14 0.00 -0.37
36 13.1608 0.00 -0.00 0.00 -0.12
37 14.0431 0.00 0.40 0.00 -0.08
38 14.1218 0.00 -0.08 0.00 -0.08
39 14.1218 0.00 0.20 0.00 -0.05
40 14.1219 0.00 0.04 0.00 -0.19
41 14.1219 0.00 0.23 0.00 0.34
42 15.0370 0.00 0.69 0.00 0.59
43 15.0370 0.00 -0.33 0.00 0.09
44 15.0370 0.00 -0.11 0.00 -0.30
45 15.0370 0.00 -0.32 0.00 -0.17
46 15.0965 0.00 -0.05 0.00 -0.03
47 15.0965 0.00 -0.17 0.00 -0.04
48 15.0965 0.00 0.02 0.00 0.05
49 15.0966 0.00 -0.05 0.00 0.03
50 15.1243 0.00 0.05 0.00 0.17
51 15.1244 0.00 0.51 0.00 0.45
52 15.1244 0.00 -0.10 0.00 -0.12
53 15.2772 0.00 0.13 0.00 -0.10
54 15.2772 0.00 -0.02 0.00 -0.02
55 15.2772 0.00 -0.10 0.00 -0.11
56 15.2773 0.00 0.00 0.00 -0.04
57 15.2826 0.00 -0.23 0.00 0.21
58 15.2826 0.00 0.41 0.00 0.37
59 15.2827 0.00 -0.05 0.00 0.05
60 15.2827 0.00 0.32 0.00 0.28
61 15.8556 0.00 0.03 0.00 -0.04
62 15.9347 0.00 -0.24 0.00 -0.05
63 16.0303 0.00 -0.08 0.00 -0.24
64 16.1481 0.00 -0.15 0.00 0.27
65 16.1482 0.00 -0.84 0.00 -0.16
66 16.1482 0.00 -0.21 0.00 0.06
67 16.1482 0.00 -0.03 0.00 -0.19
68 16.1564 0.00 -0.03 0.00 0.29
69 16.1564 0.00 0.12 0.00 0.12
70 16.2352 0.00 0.07 0.00 0.26
71 16.2378 0.00 0.08 0.00 -0.17
72 16.2379 0.00 0.52 0.00 -0.37
73 16.2379 0.00 0.06 0.00 -0.15
74 16.2379 0.00 -0.29 0.00 -0.04
75 17.0383 0.00 -0.36 0.00 0.58
76 17.0630 0.00 0.05 0.00 -0.12
77 17.2894 0.00 -0.24 0.00 -0.04
78 17.2895 0.00 0.04 0.00 -0.18
79 17.2895 0.00 -0.24 0.00 0.01
80 17.2895 0.00 -0.51 0.00 -0.68
81 18.0486 0.00 0.09 0.00 0.39
82 18.1083 0.00 -0.14 0.00 -0.16
83 18.1874 0.00 -0.03 0.00 0.05
84 18.1876 0.00 0.67 0.00 -0.14
85 18.1878 0.00 0.09 0.00 0.09
86 18.1934 0.00 0.23 0.00 -0.15
87 18.2451 0.00 -0.17 0.00 0.18
88 19.0883 0.00 -0.02 0.00 -0.02
89 19.0884 0.00 0.13 0.00 0.04
90 19.0886 0.00 0.22 0.00 -0.52
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.
612891 quality flag:3 Type: 5:2EEE 5:2EEE 5:2EEE axisobj 56.245 56.244 56.245 ecceobj 0.440 0.440 0.440 incobj 8.958 8.958 8.958 qmin 30.986 30.986 30.966 qmax 81.231 81.218 81.413 amean 55.461 55.461 55.462 amin 54.797 54.817 54.756 amax 56.367 56.352 56.438 emean 0.430 0.430 0.431 emin 0.421 0.421 0.421 emax 0.441 0.441 0.443 imean 9.942 9.936 9.919 imin 9.834 9.820 9.735 imax 10.047 10.046 10.048 excite_mean 0.464 0.464 0.464 fracstop 1.000 1.000 1.000 cjmean 2.956 2.956 2.956 libcent 0 179.2 179.6 182.1 libamp 0 55.7 57.3 69.6 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 251.4 251.6 252.7 kozaiamp 84.5 84.9 87.4