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: 500830
# Created Wed Dec 4 02:07:10 2024
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting 37 observations of 37
# Arc: 4.29y
# First observation: 2013/02/08
# Last observation: 2017/05/24
# Chi-squared of fit: 14.33 DOF: 68 RMS: 0.11
# Min/Max residuals: -0.25 0.40
# Exact a, adot, b, bdot, g, gdot:
1.733204E-05 2.857232E-02 -1.583291E-06 -4.048416E-03 2.660588E-02 3.333351E-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
2.363268 -145.664627 0.949520 0.010980 -0.264765 2456332.068818
# Heliocentric elements and errors
Epoch: 2456332.5000 = 2013/02/09
Mean Anomaly: 27.68156 +/- 0.000
Argument of Peri: 125.06722 +/- 0.000
Long of Asc Node: 49.14400 +/- 0.000
Inclination: 8.33020 +/- 0.000
Eccentricity: 0.16730168 +/- 0.0000
Semi-Major Axis: 44.04869321 +/- 0.0000
Time of Perihelion: 2448121.6899 +/- 0.0
Perihelion: 36.67927305 +/- 0.0000
Aphelion: 51.41811337 +/- 0.0000
Period (y) 292.3531 +/- 0.00
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X -31.76295804 +/- 0.0000
Ecliptic Y -20.54508511 +/- 0.0000
Ecliptic Z 1.54978467 +/- 0.0000
Ecliptic XDOT 0.00135498 +/- 0.0000
Ecliptic YDOT -0.00262992 +/- 0.0000
Ecliptic ZDOT -0.00040196 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 37.86004981 +/- 0.0000
Geocenter to KBO 37.58562795 +/- 0.0000
# Hcoef: 7.94
The following table shows the complete astrometric record for 500830. 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 (500830) followed by the observatory code and reference code for the source of the astrometry.
2013 02 08.56804 14 11 32.565 -10 44 20.80 23.7r 500830 568 C~1XRV 2013 02 08.62754 14 11 32.553 -10 44 20.66 23.4r 500830 568 C~1XRV 2013 04 04.42583 14 08 51.735 -10 29 46.22 23.8r 500830 568 C~1XRV 2013 04 04.46629 14 08 51.532 -10 29 45.30 23.7r 500830 568 C~1XRW 2013 04 04.50656 14 08 51.343 -10 29 44.46 23.6r 500830 568 C~1XRW 2013 04 05.56132 14 08 46.324 -10 29 19.01 23.9r 500830 568 C~2KOF 2013 04 05.56537 14 08 46.291 -10 29 18.86 23.0r 500830 568 C~1XRW 2013 04 06.59893 14 08 41.338 -10 28 53.98 23.0r 500830 568 C~1XRW 2013 04 08.39969 14 08 32.635 -10 28 10.07 23.7r 500830 568 C~1XRW 2013 05 11.43388 14 05 46.846 -10 14 53.26 23.6r 500830 568 C~1XRW 2013 05 12.43165 14 05 42.037 -10 14 31.33 23.9r 500830 568 C~1XRW 2013 06 13.26956 14 03 34.981 -10 05 40.89 23.8r 500830 568 C~1XRW 2013 06 13.30999 14 03 34.870 -10 05 40.31 23.6r 500830 568 C~1XRW 2013 07 04.29102 14 02 51.759 -10 03 51.24 24.0r 500830 568 C~1XRW 2013 07 06.29852 14 02 49.727 -10 03 52.59 23.7r 500830 568 C~1XRW 2014 02 24.57010 14 17 11.873 -11 28 05.15 23.6r 500830 568 C~1XRW 2014 02 27.65059 14 17 05.471 -11 27 29.89 23.9r 500830 568 C~1XRW 2014 03 28.42582 14 15 28.312 -11 19 07.35 23.7r 500830 568 C~1XRW 2014 03 28.46513 14 15 28.139 -11 19 06.44 23.8r 500830 568 C~1XRW 2014 04 05.39234 14 14 52.116 -11 16 07.60 23.7r 500830 568 C~1XRW 2014 04 23.21750 14 13 23.75 -11 09 00.2 500830 W84 C~1j9S 2014 04 24.23938 14 13 18.52 -11 08 35.5 24.8V 500830 W84 C~1j9S 2014 04 26.17361 14 13 08.62 -11 07 48.7 500830 W84 C~1j9S 2014 05 22.40950 14 11 00.216 -10 58 05.94 23.8r 500830 568 C~1XRW 2014 05 28.38167 14 10 34.401 -10 56 16.08 23.6r 500830 568 C~1XRW 2014 06 26.30928 14 09 02.801 -10 50 39.98 23.8r 500830 568 C~1XRW 2014 07 18.27586 14 08 41.073 -10 50 50.30 23.9r 500830 568 C~1XRW 2016 05 05.39771 14 24 28.305 -12 35 45.57 23.4r 500830 568 C~2KOF 2016 05 05.40175 14 24 28.290 -12 35 45.43 23.4r 500830 568 C~2KOF 2016 05 29.34785 14 22 34.294 -12 27 36.87 24.0w 500830 568 C~2KOF 2017 02 23.64413 14 35 13.043 -13 41 26.21 500830 568 C~2KOF 2017 02 24.65456 14 35 11.561 -13 41 19.30 500830 568 C~2KOF 2017 03 30.53104 14 33 29.715 -13 33 33.56 500830 568 C~2KOF 2017 03 31.47468 14 33 25.685 -13 33 15.22 23.8w 500830 568 C~2KOF 2017 05 21.34842 14 29 15.492 -13 15 00.43 23.6r 500830 568 C~2KOF 2017 05 24.27564 14 29 01.807 -13 14 03.56 23.5r 500830 568 C~2KOF 2017 05 24.35116 14 29 01.445 -13 14 02.20 23.7r 500830 568 C~2KOF
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 -0.13 0.00 -0.14
2 0.0002 0.00 0.23 0.00 -0.25
3 0.1502 0.00 -0.01 0.00 0.10
4 0.1503 0.00 -0.12 0.00 0.05
5 0.1504 0.00 -0.04 0.00 -0.07
6 0.1533 0.00 0.06 0.00 0.01
7 0.1533 0.00 -0.14 0.00 0.06
8 0.1561 0.00 -0.03 0.00 -0.06
9 0.1611 0.00 0.00 0.00 0.04
10 0.2515 0.00 0.02 0.00 -0.09
11 0.2542 0.00 -0.11 0.00 -0.04
12 0.3414 0.00 -0.08 0.00 -0.09
13 0.3415 0.00 0.09 0.00 0.07
14 0.3990 0.00 -0.04 0.00 -0.00
15 0.4045 0.00 0.04 0.00 -0.01
16 1.0431 0.00 0.06 0.00 -0.09
17 1.0516 0.00 -0.10 0.00 -0.01
18 1.1303 0.00 0.11 0.00 0.01
19 1.1305 0.00 0.13 0.00 0.07
20 1.1522 0.00 -0.04 0.00 0.14
21 1.2010 0.00 0.22 0.00 0.04
22 1.2038 0.00 0.10 0.00 -0.00
23 1.2091 0.00 -0.12 0.00 0.09
24 1.2809 0.00 -0.11 0.00 0.06
25 1.2972 0.00 -0.04 0.00 0.03
26 1.3764 0.00 -0.02 0.00 -0.04
27 1.4366 0.00 0.40 0.00 0.33
28 3.2357 0.00 -0.17 0.00 -0.05
29 3.2357 0.00 -0.08 0.00 -0.00
30 3.3012 0.00 -0.17 0.00 -0.17
31 4.0413 0.00 -0.13 0.00 0.09
32 4.0440 0.00 0.04 0.00 0.05
33 4.1368 0.00 0.06 0.00 -0.04
34 4.1394 0.00 0.06 0.00 0.07
35 4.2787 0.00 0.02 0.00 0.04
36 4.2867 0.00 0.06 0.00 -0.06
37 4.2869 0.00 -0.04 0.00 -0.13
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.
500830 quality flag:3 Type: SCATNEAR SCATNEAR SCATNEAR axisobj 43.861 43.861 43.861 ecceobj 0.163 0.163 0.163 incobj 8.336 8.336 8.336 qmin 35.007 34.965 35.072 qmax 53.920 53.970 53.919 amean 44.192 44.179 44.192 amin 43.754 43.772 43.762 amax 44.700 44.680 44.667 emean 0.177 0.177 0.176 emin 0.149 0.148 0.147 emax 0.206 0.209 0.207 imean 7.152 7.180 7.312 imin 5.600 5.519 5.583 imax 8.907 8.936 9.188 excite_mean 0.217 0.217 0.217 fracstop 1.000 1.000 1.000 cjmean 3.046 3.046 3.046 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 181.6 185.9 180.4 kozaiamp 180.0 180.0 180.0