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: 500837 # Created Mon Apr 28 01:07:14 2025 # Orbit generated by ELGB # -->Covariance matrix from a Bernstein fit # Fitting 35 observations of 35 # Arc: 4.22y # First observation: 2013/03/07 # Last observation: 2017/05/27 # Chi-squared of fit: 18.92 DOF: 64 RMS: 0.13 # Min/Max residuals: -0.30 0.46 # Exact a, adot, b, bdot, g, gdot: 1.437030E-05 2.232366E-02 -9.090894E-07 -8.753782E-04 2.332760E-02 2.713167E-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 -0.455385 -142.448565 0.765757 -0.004983 -0.631886 2456359.034468 # Heliocentric elements and errors Epoch: 2456358.5000 = 2013/03/07 Mean Anomaly: 71.76356 +/- 0.000 Argument of Peri: 107.41376 +/- 0.000 Long of Asc Node: 25.26657 +/- 0.000 Inclination: 2.29403 +/- 0.000 Eccentricity: 0.10735996 +/- 0.0000 Semi-Major Axis: 44.51590663 +/- 0.0000 Time of Perihelion: 2434732.6716 +/- 0.0 Perihelion: 39.73668056 +/- 0.0000 Aphelion: 49.29513270 +/- 0.0000 Period (y) 297.0168 +/- 0.00 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X -34.95112733 +/- 0.0000 Ecliptic Y -25.90187754 +/- 0.0000 Ecliptic Z -0.34073559 +/- 0.0000 Ecliptic XDOT 0.00133878 +/- 0.0000 Ecliptic YDOT -0.00227006 +/- 0.0000 Ecliptic ZDOT -0.00010513 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 43.50400807 +/- 0.0000 Geocenter to KBO 42.86761325 +/- 0.0000 # Hcoef: 7.42
The following table shows the complete astrometric record for 500837. 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 (500837) followed by the observatory code and reference code for the source of the astrometry.
2013 03 07.53369 14 20 10.355 -14 27 39.18 24.0r 500837 568 C~1XRY 2013 03 07.59012 14 20 10.185 -14 27 38.63 500837 568 C~1XRY 2013 03 07.64267 14 20 10.049 -14 27 38.02 24.1r 500837 568 C~1XRY 2013 04 04.53472 14 18 33.370 -14 19 59.18 23.7r 500837 568 C~1XRY 2013 04 07.39521 14 18 21.315 -14 19 00.81 23.4r 500837 568 C~1XRY 2013 04 07.43903 14 18 21.135 -14 18 59.94 23.9r 500837 568 C~1XRY 2013 04 08.42769 14 18 16.886 -14 18 39.62 23.3r 500837 568 C~1XRY 2013 04 08.47292 14 18 16.687 -14 18 38.12 23.3r 500837 568 C~1XRY 2013 04 09.37434 14 18 12.824 -14 18 19.45 23.3r 500837 568 C~1XRY 2013 04 09.41746 14 18 12.636 -14 18 18.47 23.7r 500837 568 C~1XRY 2013 04 09.46062 14 18 12.451 -14 18 17.62 23.6r 500837 568 C~1XRY 2013 05 11.46227 14 15 48.470 -14 06 26.72 23.8r 500837 568 C~1XRY 2013 05 12.46349 14 15 44.111 -14 06 04.73 23.8r 500837 568 C~1XRY 2013 06 12.35950 14 13 48.367 -13 56 19.53 24.1r 500837 568 C~1XRY 2013 06 12.40439 14 13 48.228 -13 56 18.96 23.6r 500837 568 C~1XRY 2013 07 04.31926 14 13 01.778 -13 52 19.34 23.6r 500837 568 C~1XRY 2013 07 06.32704 14 12 59.400 -13 52 06.88 23.5r 500837 568 C~1XRY 2014 02 03.59026 14 25 42.292 -14 57 32.58 24.0r 500837 568 C~1XRY 2014 02 24.60898 14 25 28.526 -14 56 51.24 23.9r 500837 568 C~1XRY 2014 02 25.59204 14 25 26.914 -14 56 44.44 24.0r 500837 568 C~1XRY 2014 02 28.54001 14 25 21.610 -14 56 22.16 23.2r 500837 568 C~1XRY 2014 04 04.43905 14 23 31.935 -14 47 58.59 23.8r 500837 568 C~1XRY 2014 04 04.44293 14 23 31.922 -14 47 58.56 23.8r 500837 568 C~1XRZ 2014 04 04.47867 14 23 31.772 -14 47 57.77 23.8r 500837 568 C~1XRZ 2014 04 04.48274 14 23 31.751 -14 47 57.85 23.9r 500837 568 C~1XRZ 2014 04 30.11337 14 21 38.18 -14 38 52.3 24.2V 500837 W84 C~2g2q 2014 04 30.18231 14 21 37.85 -14 38 50.7 500837 W84 C~2g2q 2014 05 01.10004 14 21 33.67 -14 38 30.4 500837 W84 C~2g2q 2014 05 22.44989 14 19 59.811 -14 30 49.72 23.8r 500837 568 C~1XRZ 2014 05 25.44210 14 19 47.729 -14 29 49.82 24.1r 500837 568 C~1XRZ 2016 03 13.40559 14 34 40.87 -15 47 40.1 23.6R 500837 G37 C~1pQU 2016 03 13.48448 14 34 40.65 -15 47 39.3 500837 G37 C~1pQU 2017 01 31.64975 14 40 16.116 -16 15 47.68 24.3w 500837 568 C~2KOG 2017 02 03.64617 14 40 18.448 -16 16 02.93 500837 568 C~2KOG 2017 05 27.33451 14 34 30.524 -15 50 47.73 23.7r 500837 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 0.18 0.00 0.01
2 0.0002 0.00 -0.12 0.00 -0.11
3 0.0003 0.00 -0.05 0.00 -0.13
4 0.0767 0.00 0.01 0.00 0.04
5 0.0845 0.00 -0.13 0.00 -0.03
6 0.0846 0.00 0.02 0.00 -0.06
7 0.0873 0.00 -0.25 0.00 -0.30
8 0.0874 0.00 -0.27 0.00 0.26
9 0.0899 0.00 -0.04 0.00 0.03
10 0.0900 0.00 -0.02 0.00 0.11
11 0.0901 0.00 0.06 0.00 0.05
12 0.1778 0.00 0.04 0.00 -0.00
13 0.1805 0.00 0.46 0.00 0.04
14 0.2651 0.00 0.07 0.00 0.09
15 0.2652 0.00 0.00 0.00 -0.01
16 0.3252 0.00 -0.04 0.00 0.11
17 0.3307 0.00 0.02 0.00 0.09
18 0.9119 0.00 0.00 0.00 -0.14
19 0.9694 0.00 0.18 0.00 -0.12
20 0.9721 0.00 0.06 0.00 -0.01
21 0.9802 0.00 0.02 0.00 -0.21
22 1.0757 0.00 -0.04 0.00 0.01
23 1.0757 0.00 0.01 0.00 -0.04
24 1.0758 0.00 0.01 0.00 0.06
25 1.0758 0.00 -0.05 0.00 -0.10
26 1.1460 0.00 0.03 0.00 0.02
27 1.1462 0.00 -0.11 0.00 0.09
28 1.1487 0.00 0.06 0.00 -0.02
29 1.2072 0.00 -0.10 0.00 0.18
30 1.2154 0.00 0.29 0.00 0.06
31 3.0168 0.00 -0.23 0.00 0.03
32 3.0170 0.00 -0.17 0.00 -0.10
33 3.9045 0.00 -0.04 0.00 0.03
34 3.9127 0.00 0.18 0.00 -0.19
35 4.2212 0.00 0.04 0.00 0.21
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.
500837 quality flag:3 Type: CLASSICAL CLASSICAL CLASSICAL axisobj 44.334 44.334 44.334 ecceobj 0.104 0.104 0.104 incobj 2.300 2.300 2.300 qmin 38.771 38.775 38.792 qmax 50.917 50.855 50.834 amean 44.658 44.658 44.658 amin 44.297 44.297 44.287 amax 45.069 45.060 45.061 emean 0.112 0.112 0.112 emin 0.095 0.095 0.095 emax 0.130 0.129 0.129 imean 2.303 2.303 2.303 imin 1.440 1.441 1.441 imax 3.079 3.076 3.078 excite_mean 0.119 0.119 0.119 fracstop 1.000 1.000 1.000 cjmean 3.092 3.092 3.092 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 172.9 172.9 172.9 kozaiamp 180.0 180.0 180.0