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: 500882
# Created Sun Dec 22 02:07:14 2024
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting 35 observations of 35
# Arc: 3.82y
# First observation: 2013/04/10
# Last observation: 2017/02/02
# Chi-squared of fit: 23.28 DOF: 64 RMS: 0.14
# Min/Max residuals: -0.42 0.44
# Exact a, adot, b, bdot, g, gdot:
1.820596E-05 3.070255E-02 -8.157118E-07 -4.808195E-04 2.673858E-02 2.513318E-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
7.858541 -117.001308 0.673882 0.101694 -0.736669 2456393.102018
# Heliocentric elements and errors
Epoch: 2456392.5000 = 2013/04/10
Mean Anomaly: 9.06650 +/- 0.000
Argument of Peri: 78.64451 +/- 0.000
Long of Asc Node: 146.38629 +/- 0.000
Inclination: 7.74148 +/- 0.000
Eccentricity: 0.28506325 +/- 0.0000
Semi-Major Axis: 52.83568230 +/- 0.0000
Time of Perihelion: 2452859.6405 +/- 0.0
Perihelion: 37.77417100 +/- 0.0000
Aphelion: 67.89719361 +/- 0.0000
Period (y) 384.0601 +/- 0.00
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X -17.75693851 +/- 0.0000
Ecliptic Y -33.36396650 +/- 0.0000
Ecliptic Z 5.11351057 +/- 0.0000
Ecliptic XDOT 0.00267596 +/- 0.0000
Ecliptic YDOT -0.00166009 +/- 0.0000
Ecliptic ZDOT -0.00001344 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 38.13932037 +/- 0.0000
Geocenter to KBO 37.39911002 +/- 0.0000
# Hcoef: 8.32
The following table shows the complete astrometric record for 500882. 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 (500882) followed by the observatory code and reference code for the source of the astrometry.
2013 04 10.60124 16 10 01.479 -13 02 26.74 24.0r 500882 568 C~1XRd 2013 04 19.47215 16 09 28.734 -12 59 45.52 24.0r 500882 568 C~1XRd 2013 04 19.52501 16 09 28.531 -12 59 44.59 23.9r 500882 568 C~1XRd 2013 05 08.45928 16 08 03.223 -12 54 06.89 24.0r 500882 568 C~1XRd 2013 05 08.50332 16 08 03.005 -12 54 06.16 24.0r 500882 568 C~1XRd 2013 05 08.54713 16 08 02.776 -12 54 05.39 23.7r 500882 568 C~1XRd 2013 05 09.55421 16 07 57.809 -12 53 48.31 24.1r 500882 568 C~1XRd 2013 05 10.55976 16 07 52.821 -12 53 31.30 23.7r 500882 568 C~1XRd 2013 06 06.34333 16 05 36.085 -12 47 09.71 23.9r 500882 568 C~1XRd 2013 06 06.42884 16 05 35.633 -12 47 08.78 500882 568 C~1XRd 2013 07 02.38082 16 03 38.761 -12 44 05.63 24.5r 500882 568 C~1XRd 2013 07 04.37206 16 03 31.337 -12 44 00.91 24.1r 500882 568 C~1XRd 2013 08 02.31452 16 02 18.838 -12 45 37.65 24.1r 500882 568 C~1XRd 2013 08 05.30445 16 02 15.700 -12 46 04.86 24.0r 500882 568 C~1XRd 2014 03 06.62146 16 18 01.496 -13 32 03.79 24.4r 500882 568 C~1XRd 2014 03 07.59609 16 18 01.630 -13 31 52.06 24.6r 500882 568 C~1XRd 2014 05 01.41785 16 15 43.701 -13 17 15.45 24.3r 500882 568 C~1XRd 2014 05 01.46926 16 15 43.444 -13 17 14.32 23.9r 500882 568 C~1XRd 2014 05 01.52791 16 15 43.189 -13 17 13.20 24.2r 500882 568 C~1XRd 2014 05 04.41561 16 15 29.822 -13 16 24.20 500882 568 C~1XRd 2014 05 04.46606 16 15 29.565 -13 16 23.68 24.0r 500882 568 C~1XRd 2014 05 04.51675 16 15 29.328 -13 16 22.84 24.3r 500882 568 C~1XRd 2014 05 22.51414 16 13 59.711 -13 11 41.73 23.9r 500882 568 C~1XRd 2014 05 25.46782 16 13 44.479 -13 11 00.49 24.2r 500882 568 C~1XRd 2014 06 02.46901 16 13 03.190 -13 09 18.89 23.9r 500882 568 C~1XRd 2014 06 21.44054 16 11 30.356 -13 06 25.06 24.2r 500882 568 C~1XRd 2014 06 22.41323 16 11 25.945 -13 06 19.00 23.8r 500882 568 C~1XRd 2014 07 18.36907 16 09 49.727 -13 05 35.95 24.1r 500882 568 C~2LSW 2014 07 18.37716 16 09 49.697 -13 05 35.86 24.5r 500882 568 C~1XRd 2015 03 22.57019 16 24 51.483 -13 48 14.25 24.2r 500882 568 C~1XRd 2015 08 11.31349 16 16 08.063 -13 28 55.64 24.2r 500882 568 C~2LSW 2016 05 29.37647 16 27 33.577 -13 50 15.23 24.3w 500882 568 C~2LSW 2016 06 03.41661 16 27 07.479 -13 49 19.70 24.1w 500882 568 C~2LSW 2017 01 31.66702 16 37 25.484 -14 31 39.02 24.1w 500882 568 C~2LSW 2017 02 02.66017 16 37 33.773 -14 31 35.80 24.9w 500882 568 C~2LSW
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 0.11
2 0.0243 0.00 -0.09 0.00 0.03
3 0.0244 0.00 0.11 0.00 -0.00
4 0.0763 0.00 0.08 0.00 -0.07
5 0.0764 0.00 0.12 0.00 -0.10
6 0.0765 0.00 -0.03 0.00 -0.08
7 0.0793 0.00 -0.05 0.00 -0.09
8 0.0820 0.00 -0.06 0.00 -0.02
9 0.1554 0.00 0.07 0.00 -0.15
10 0.1556 0.00 -0.16 0.00 -0.16
11 0.2266 0.00 -0.28 0.00 0.00
12 0.2321 0.00 0.21 0.00 0.08
13 0.3113 0.00 0.00 0.00 -0.14
14 0.3195 0.00 0.07 0.00 -0.01
15 0.9035 0.00 -0.00 0.00 0.02
16 0.9062 0.00 -0.13 0.00 0.15
17 1.0563 0.00 0.19 0.00 -0.07
18 1.0564 0.00 -0.08 0.00 0.19
19 1.0566 0.00 0.20 0.00 0.31
20 1.0645 0.00 0.32 0.00 0.44
21 1.0647 0.00 0.09 0.00 0.12
22 1.0648 0.00 0.18 0.00 0.11
23 1.1141 0.00 -0.42 0.00 -0.20
24 1.1222 0.00 -0.14 0.00 -0.00
25 1.1441 0.00 -0.03 0.00 -0.03
26 1.1960 0.00 0.05 0.00 -0.03
27 1.1987 0.00 -0.02 0.00 0.00
28 1.2697 0.00 0.08 0.00 -0.07
29 1.2697 0.00 -0.02 0.00 0.04
30 1.9465 0.00 -0.08 0.00 -0.25
31 2.3346 0.00 -0.11 0.00 -0.03
32 3.1342 0.00 0.17 0.00 -0.19
33 3.1480 0.00 -0.03 0.00 0.01
34 3.8113 0.00 -0.23 0.00 0.08
35 3.8167 0.00 0.15 0.00 -0.01
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.
500882 quality flag:3 Type: 7:3EEEE 7:3EEEE 7:3EEEE axisobj 52.605 52.605 52.605 ecceobj 0.282 0.282 0.282 incobj 7.744 7.744 7.744 qmin 37.269 37.275 37.227 qmax 69.749 69.696 69.775 amean 52.969 52.969 52.969 amin 52.306 52.292 52.305 amax 53.776 53.753 53.787 emean 0.285 0.285 0.285 emin 0.272 0.272 0.272 emax 0.297 0.297 0.297 imean 6.728 6.722 6.720 imin 6.432 6.422 6.424 imax 7.032 7.032 7.032 excite_mean 0.308 0.308 0.308 fracstop 1.000 1.000 1.000 cjmean 3.094 3.094 3.094 libcent 0 179.9 182.1 181.5 libamp 0 146.9 151.1 153.9 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 181.9 188.8 191.4 kozaiamp 180.0 180.0 179.9