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: 02XE91
# Created Sun Dec 22 02:08:27 2024
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting 56 observations of 56
# Arc: 18.35y
# First observation: 2002/09/09
# Last observation: 2021/01/15
# Chi-squared of fit: 71.02 DOF: 106 RMS: 0.20
# Min/Max residuals: -0.46 0.64
# Exact a, adot, b, bdot, g, gdot:
1.184672E-05 1.572185E-02 -9.706245E-07 -1.722184E-03 1.927979E-02 7.453745E-04
# Covariance matrix:
2.2917E-13 -9.0646E-15 -2.4566E-15 6.4450E-16 1.5553E-13 -1.0611E-14
-9.0646E-15 1.2001E-14 1.7223E-15 -1.3048E-15 1.8546E-14 4.2879E-14
-2.4566E-15 1.7223E-15 9.8400E-14 -6.5504E-15 2.7859E-16 6.4576E-15
6.4450E-16 -1.3048E-15 -6.5504E-15 7.0195E-16 -1.7030E-15 -4.8883E-15
1.5553E-13 1.8546E-14 2.7859E-16 -1.7030E-15 2.2615E-13 6.8922E-14
-1.0611E-14 4.2879E-14 6.4576E-15 -4.8883E-15 6.8922E-14 1.6060E-13
# lat0 lon0 xBary yBary zBary JD0
0.670688 91.919316 0.972325 -0.003178 0.269139 2452527.116002
# Heliocentric elements and errors
Epoch: 2452526.5000 = 2002/09/09
Mean Anomaly: 164.99127 +/- 0.023
Argument of Peri: 5.79374 +/- 0.012
Long of Asc Node: 277.01337 +/- 0.000
Inclination: 6.24339 +/- 0.000
Eccentricity: 0.11547239 +/- 0.0001
Semi-Major Axis: 46.40212048 +/- 0.0037
Time of Perihelion: 2399613.3490 +/- 9.8
Perihelion: 41.04395677 +/- 0.0044
Aphelion: 51.76028418 +/- 0.0050
Period (y) 316.0930 +/- 0.04
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X -0.75738175 +/- 0.0000
Ecliptic Y 51.60384822 +/- 0.0013
Ecliptic Z 0.60708424 +/- 0.0000
Ecliptic XDOT -0.00224263 +/- 0.0000
Ecliptic YDOT 0.00003101 +/- 0.0000
Ecliptic ZDOT -0.00024310 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 51.61295812 +/- 0.0013
Geocenter to KBO 51.86777786 +/- 0.0013
# Hcoef: 5.84
The following table shows the complete astrometric record for 02XE91. 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 (02XE91) followed by the observatory code and reference code for the source of the astrometry.
2002 09 09.615259 06 08 24.59 +24 05 45.5 02XE91 568 C~5ZVE 2002 09 09.616466 06 08 24.57 +24 05 45.6 02XE91 568 C~5ZVE 2002 10 30.212251 06 08 12.30 +24 05 37.8 22.8r 02XE91 950 C~5ZVE 2002 12 04.37006 06 06 12.62 +24 05 39.9 22.4R 02XE91 695 Ch0143 2002 12 04.47819 06 06 12.15 +24 05 40.0 02XE91 695 Ch0143 2002 12 05.36248 06 06 08.39 +24 05 40.0 02XE91 695 Ch0143 2003 01 30.24231 06 02 11.82 +24 05 00.3 23.0R 02XE91 688 Ch1704 2003 01 30.34228 06 02 11.44 +24 05 00.0 02XE91 688 Ch1704 2003 12 21.348272 06 09 01.48 +23 58 51.9 02XE91 568 C~5ZVE 2003 12 21.364021 06 09 01.38 +23 58 51.9 02XE91 568 C~5ZVE 2003 12 21.379976 06 09 01.32 +23 58 52.0 02XE91 568 C~5ZVE 2003 12 21.398461 06 09 01.24 +23 58 51.9 02XE91 568 C~5ZVE 2003 12 21.414166 06 09 01.16 +23 58 51.8 02XE91 568 C~5ZVE 2003 12 21.429882 06 09 01.09 +23 58 51.7 02XE91 568 C~5ZVE 2003 12 21.445820 06 09 01.02 +23 58 51.8 02XE91 568 C~5ZVE 2003 12 21.461783 06 09 00.94 +23 58 51.9 02XE91 568 C~5ZVE 2003 12 21.480510 06 09 00.87 +23 58 52.0 02XE91 568 C~5ZVE 2011 02 05.430529 06 33 43.03 +23 03 04.6 02XE91 568 C~5ZVE 2013 12 11.553469 06 49 26.762 +22 30 09.99 22.0G 02XE91 F51 C~5ZVE 2013 12 11.568519 06 49 26.688 +22 30 10.09 22.6G 02XE91 F51 C~5ZVE 2013 12 11.583635 06 49 26.630 +22 30 09.86 22.8G 02XE91 F51 C~5ZVE 2015 01 20.287276 06 50 30.679 +22 22 10.39 22.8G 02XE91 F51 C~5ZVE 2015 01 20.298004 06 50 30.637 +22 22 10.67 22.9G 02XE91 F51 C~5ZVE 2015 01 20.308927 06 50 30.579 +22 22 10.66 23.1G 02XE91 F51 C~5ZVE 2015 12 14.397959 06 57 07.247 +22 08 13.81 24.1G 02XE91 F51 C~5ZVE 2015 12 14.410006 06 57 07.192 +22 08 14.01 23.2G 02XE91 F51 C~5ZVE 2015 12 14.422075 06 57 07.137 +22 08 13.90 23.0G 02XE91 F51 C~5ZVE 2016 02 01.278216 06 53 38.328 +22 12 05.58 23.0G 02XE91 F51 C~5ZVE 2017 12 12.430456 07 04 59.540 +21 44 39.62 22.6G 02XE91 F51 C~5ZVE 2017 12 23.401281 07 04 13.992 +21 45 35.98 22.9G 02XE91 F51 C~5ZVE 2017 12 23.414117 07 04 13.934 +21 45 35.91 23.2G 02XE91 F51 C~5ZVE 2017 12 23.426966 07 04 13.871 +21 45 35.82 22.3G 02XE91 F51 C~5ZVE 2017 12 23.439869 07 04 13.843 +21 45 35.81 22.6G 02XE91 F51 C~5ZVE 2018 01 20.330384 07 02 11.629 +21 48 14.38 21.7G 02XE91 F51 C~5ZVE 2018 01 20.343324 07 02 11.597 +21 48 13.97 22.3G 02XE91 F51 C~5ZVE 2018 01 20.356219 07 02 11.535 +21 48 14.45 23.6G 02XE91 F51 C~5ZVE 2018 12 14.553271 07 08 43.771 +21 32 35.66 22.2G 02XE91 F51 C~5ZVE 2018 12 14.566855 07 08 43.747 +21 32 35.65 22.1G 02XE91 F51 C~5ZVE 2019 01 03.524261 07 07 18.642 +21 34 29.31 23.4G 02XE91 F51 C~5ZVE 2019 01 03.536516 07 07 18.556 +21 34 29.38 22.4G 02XE91 F51 C~5ZVE 2019 01 03.548789 07 07 18.529 +21 34 29.76 22.3G 02XE91 F51 C~5ZVE 2019 01 03.561051 07 07 18.461 +21 34 29.69 23.7G 02XE91 F51 C~5ZVE 2019 01 10.358844 07 06 48.401 +21 35 10.95 22.6G 02XE91 F51 C~5ZVE 2019 01 10.370651 07 06 48.349 +21 35 11.23 22.6G 02XE91 F51 C~5ZVE 2019 12 10.291207 07 12 52.20 +21 19 39.1 02XE91 W84 C~5ZVE 2019 12 28.538966 07 11 37.375 +21 21 22.81 22.4G 02XE91 F51 C~5ZVE 2019 12 28.563340 07 11 37.246 +21 21 23.12 22.7G 02XE91 F51 C~5ZVE 2020 01 03.237044 07 11 12.45 +21 21 59.0 02XE91 W84 C~5ZVE 2020 01 03.239113 07 11 12.44 +21 21 59.2 02XE91 W84 C~5ZVE 2020 01 20.501970 07 09 56.761 +21 23 51.58 23.0G 02XE91 F51 C~5ZVE 2020 03 24.327565 07 07 04.454 +21 28 29.34 23.3G 02XE91 F51 C~5ZVE 2020 11 16.507540 07 17 53.592 +21 05 16.68 21.4G 02XE91 F51 C~5ZVE 2020 12 24.544409 07 15 41.918 +21 08 12.92 22.6G 02XE91 F51 C~5ZVE 2020 12 24.557970 07 15 41.871 +21 08 13.27 22.4G 02XE91 F51 C~5ZVE 2020 12 24.571528 07 15 41.821 +21 08 13.20 22.9G 02XE91 F51 C~5ZVE 2021 01 15.468769 07 14 06.132 +21 10 41.55 22.8G 02XE91 F52 C~5ZVE
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 -0.09
2 0.0000 0.00 -0.10 0.00 0.01
3 0.1385 0.00 0.46 0.00 0.53
4 0.2348 0.00 -0.10 0.00 0.02
5 0.2351 0.00 -0.16 0.00 0.15
6 0.2375 0.00 -0.18 0.00 0.24
7 0.3905 0.00 0.64 0.00 0.41
8 0.3908 0.00 0.05 0.00 0.26
9 1.2806 0.00 0.07 0.00 -0.16
10 1.2806 0.00 -0.35 0.00 -0.16
11 1.2807 0.00 -0.15 0.00 -0.06
12 1.2807 0.00 -0.07 0.00 -0.16
13 1.2808 0.00 -0.19 0.00 -0.27
14 1.2808 0.00 -0.15 0.00 -0.37
15 1.2809 0.00 -0.10 0.00 -0.27
16 1.2809 0.00 -0.20 0.00 -0.17
17 1.2809 0.00 0.04 0.00 -0.07
18 8.4074 0.00 -0.11 0.00 -0.15
19 11.2551 0.00 0.16 0.00 0.07
20 11.2552 0.00 -0.01 0.00 0.11
21 11.2552 0.00 0.06 0.00 -0.17
22 12.3632 0.00 0.11 0.00 -0.12
23 12.3633 0.00 0.17 0.00 0.11
24 12.3633 0.00 -0.00 0.00 0.05
25 13.2616 0.00 -0.04 0.00 0.03
26 13.2616 0.00 -0.11 0.00 0.17
27 13.2616 0.00 -0.19 0.00 0.01
28 13.3954 0.00 -0.18 0.00 0.23
29 15.2575 0.00 0.06 0.00 -0.06
30 15.2876 0.00 0.07 0.00 0.25
31 15.2876 0.00 0.04 0.00 0.11
32 15.2876 0.00 -0.06 0.00 -0.05
33 15.2877 0.00 0.37 0.00 -0.13
34 15.3640 0.00 -0.25 0.00 0.14
35 15.3641 0.00 0.11 0.00 -0.35
36 15.3641 0.00 0.01 0.00 0.06
37 16.2627 0.00 -0.18 0.00 0.27
38 16.2627 0.00 0.29 0.00 0.20
39 16.3173 0.00 0.19 0.00 -0.06
40 16.3174 0.00 -0.27 0.00 -0.07
41 16.3174 0.00 0.15 0.00 0.24
42 16.3174 0.00 -0.05 0.00 0.10
43 16.3361 0.00 0.17 0.00 -0.43
44 16.3361 0.00 0.18 0.00 -0.22
45 17.2503 0.00 0.24 0.00 0.06
46 17.3003 0.00 -0.01 0.00 0.03
47 17.3003 0.00 -0.34 0.00 0.19
48 17.3159 0.00 0.09 0.00 -0.11
49 17.3159 0.00 0.08 0.00 0.07
50 17.3631 0.00 -0.11 0.00 -0.39
51 17.5379 0.00 -0.06 0.00 0.23
52 18.1872 0.00 -0.22 0.00 -0.06
53 18.2914 0.00 -0.13 0.00 -0.05
54 18.2914 0.00 0.04 0.00 0.22
55 18.2915 0.00 0.16 0.00 0.06
56 18.3514 0.00 -0.10 0.00 -0.46
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.
02XE91 quality flag:3 Type: CLASSICAL CLASSICAL CLASSICAL axisobj 46.342 46.342 46.342 ecceobj 0.118 0.118 0.118 incobj 6.256 6.256 6.256 qmin 39.822 39.793 39.811 qmax 52.830 52.754 52.767 amean 46.166 46.166 46.166 amin 45.786 45.789 45.789 amax 46.587 46.561 46.568 emean 0.122 0.122 0.122 emin 0.111 0.111 0.111 emax 0.135 0.134 0.134 imean 7.948 7.948 7.948 imin 7.479 7.479 7.479 imax 8.390 8.390 8.392 excite_mean 0.185 0.185 0.185 fracstop 1.000 1.000 1.000 cjmean 3.086 3.086 3.086 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 174.7 174.7 174.6 kozaiamp 180.0 180.0 180.0