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: 500836
# Created Mon Apr 28 01:07:14 2025
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting 34 observations of 34
# Arc: 4.14y
# First observation: 2013/04/04
# Last observation: 2017/05/24
# Chi-squared of fit: 13.27 DOF: 62 RMS: 0.11
# Min/Max residuals: -0.22 0.43
# Exact a, adot, b, bdot, g, gdot:
1.527961E-05 2.476539E-02 -9.168174E-07 -6.981251E-04 2.453938E-02 2.656687E-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
2.418939 -145.162407 0.343833 0.039736 -0.939898 2456386.938478
# Heliocentric elements and errors
Epoch: 2456386.5000 = 2013/04/04
Mean Anomaly: 43.49821 +/- 0.000
Argument of Peri: 68.69288 +/- 0.000
Long of Asc Node: 90.40379 +/- 0.000
Inclination: 2.84987 +/- 0.000
Eccentricity: 0.13199046 +/- 0.0000
Semi-Major Axis: 45.62276753 +/- 0.0000
Time of Perihelion: 2442786.4750 +/- 0.0
Perihelion: 39.60099757 +/- 0.0000
Aphelion: 51.64453749 +/- 0.0000
Period (y) 308.1631 +/- 0.00
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X -34.38492473 +/- 0.0000
Ecliptic Y -23.51141862 +/- 0.0000
Ecliptic Z 1.71991132 +/- 0.0000
Ecliptic XDOT 0.00132635 +/- 0.0000
Ecliptic YDOT -0.00243850 +/- 0.0000
Ecliptic ZDOT -0.00006517 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 41.69007676 +/- 0.0000
Geocenter to KBO 40.75077993 +/- 0.0000
# Hcoef: 7.35
The following table shows the complete astrometric record for 500836. 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 (500836) followed by the observatory code and reference code for the source of the astrometry.
2013 04 04.43770 14 13 32.684 -10 51 14.07 23.3r 500836 568 C~1XRY 2013 04 04.47824 14 13 32.494 -10 51 13.30 23.6r 500836 568 C~1XRY 2013 04 04.51865 14 13 32.310 -10 51 12.37 23.4r 500836 568 C~1XRY 2013 04 06.61093 14 13 23.256 -10 50 23.36 23.5r 500836 568 C~1XRY 2013 04 08.41181 14 13 15.383 -10 49 40.84 23.5r 500836 568 C~1XRY 2013 05 11.44582 14 10 44.116 -10 36 43.47 22.7r 500836 568 C~1XRY 2013 05 12.44355 14 10 39.702 -10 36 21.78 23.5r 500836 568 C~1XRY 2013 06 13.32253 14 08 41.309 -10 27 16.76 24.1r 500836 568 C~1XRY 2013 07 04.30285 14 07 59.494 -10 24 50.67 23.5r 500836 568 C~1XRY 2013 07 06.31139 14 07 57.340 -10 24 47.22 23.6r 500836 568 C~1XRY 2014 02 24.58563 14 20 58.060 -11 33 11.90 23.6r 500836 568 C~1XRY 2014 02 25.55523 14 20 56.391 -11 33 00.67 23.6r 500836 568 C~1XRY 2014 02 28.51669 14 20 50.762 -11 32 23.83 23.7r 500836 568 C~1XRY 2014 04 04.41916 14 18 57.030 -11 21 37.32 23.4r 500836 568 C~1XRY 2014 04 04.45865 14 18 56.863 -11 21 36.45 23.6r 500836 568 C~1XRY 2014 04 05.53127 14 18 52.284 -11 21 12.17 23.6r 500836 568 C~1XRY 2014 04 29.34030 14 17 04.183 -11 11 54.64 23.4r 500836 568 C~1XRY 2014 04 29.34534 14 17 04.156 -11 11 54.53 23.5r 500836 568 C~1XRY 2014 04 29.38070 14 17 03.985 -11 11 53.65 23.7r 500836 568 C~1XRY 2014 04 29.38574 14 17 03.958 -11 11 53.57 23.5r 500836 568 C~1XRY 2014 04 29.42105 14 17 03.800 -11 11 52.76 23.6r 500836 568 C~1XRY 2014 04 29.42745 14 17 03.767 -11 11 52.60 23.5r 500836 568 C~1XRY 2014 04 29.43257 14 17 03.741 -11 11 52.52 23.5r 500836 568 C~1XRY 2014 05 22.45766 14 15 21.016 -11 03 34.35 23.5r 500836 568 C~1XRY 2014 05 25.45015 14 15 08.861 -11 02 37.94 23.7r 500836 568 C~1XRY 2016 03 13.37385 14 30 59.40 -12 27 30.5 22.9R 500836 G37 C~1pQU 2016 03 13.45273 14 30 59.13 -12 27 29.6 500836 G37 C~1pQU 2016 05 05.32208 14 27 21.036 -12 09 00.72 23.6r 500836 568 C~2KOG 2016 05 05.39771 14 27 20.685 -12 08 59.11 23.4r 500836 568 C~2KOG 2016 05 05.40175 14 27 20.657 -12 08 58.92 23.3r 500836 568 C~2KOG 2017 03 31.47468 14 35 20.264 -12 50 42.11 23.8w 500836 568 C~2KOG 2017 05 21.34842 14 31 32.837 -12 32 35.77 23.5r 500836 568 C~2KOG 2017 05 24.27564 14 31 20.322 -12 31 40.15 23.4r 500836 568 C~2KOG 2017 05 24.35116 14 31 19.994 -12 31 38.70 22.6r 500836 568 C~2KOG
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 0.17 0.00 0.04
2 0.0001 0.00 -0.03 0.00 -0.13
3 0.0002 0.00 -0.14 0.00 -0.13
4 0.0059 0.00 -0.22 0.00 -0.01
5 0.0109 0.00 -0.11 0.00 0.07
6 0.1013 0.00 0.04 0.00 0.03
7 0.1041 0.00 0.08 0.00 0.06
8 0.1913 0.00 -0.10 0.00 -0.13
9 0.2488 0.00 0.35 0.00 -0.07
10 0.2543 0.00 -0.05 0.00 -0.06
11 0.8929 0.00 0.00 0.00 0.01
12 0.8956 0.00 0.10 0.00 -0.04
13 0.9037 0.00 0.03 0.00 0.01
14 0.9993 0.00 0.04 0.00 0.09
15 0.9994 0.00 0.08 0.00 0.07
16 1.0023 0.00 -0.15 0.00 0.06
17 1.0675 0.00 0.05 0.00 0.01
18 1.0675 0.00 0.00 0.00 -0.00
19 1.0676 0.00 -0.05 0.00 0.06
20 1.0676 0.00 -0.10 0.00 0.02
21 1.0677 0.00 0.05 0.00 0.01
22 1.0677 0.00 0.01 0.00 0.02
23 1.0677 0.00 -0.02 0.00 -0.02
24 1.1308 0.00 -0.07 0.00 0.11
25 1.1390 0.00 0.01 0.00 0.07
26 2.9403 0.00 0.43 0.00 0.27
27 2.9405 0.00 -0.14 0.00 -0.10
28 3.0852 0.00 -0.02 0.00 -0.14
29 3.0854 0.00 0.07 0.00 -0.19
30 3.0855 0.00 -0.07 0.00 -0.09
31 3.9891 0.00 -0.03 0.00 -0.05
32 4.1284 0.00 -0.11 0.00 0.03
33 4.1364 0.00 -0.03 0.00 0.03
34 4.1367 0.00 -0.08 0.00 0.08
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.
500836 quality flag:3 Type: CLASSICAL CLASSICAL CLASSICAL axisobj 45.412 45.412 45.412 ecceobj 0.128 0.128 0.128 incobj 2.849 2.849 2.849 qmin 38.913 38.919 38.903 qmax 52.944 52.946 52.911 amean 45.754 45.753 45.754 amin 45.377 45.368 45.363 amax 46.176 46.177 46.177 emean 0.132 0.132 0.132 emin 0.118 0.118 0.118 emax 0.147 0.147 0.147 imean 1.220 1.220 1.220 imin 0.657 0.657 0.657 imax 1.783 1.783 1.783 excite_mean 0.134 0.134 0.134 fracstop 1.000 1.000 1.000 cjmean 3.101 3.101 3.101 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 198.9 198.9 198.9 kozaiamp 180.0 179.9 180.0