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: 20KO11
# Created Sun Nov 24 02:11:01 2024
# Orbit generated from Bernstein formalism
# Fitting 28 observations of 28
# Arc: 153.85d
# First observation: 2020/05/26
# Last observation: 2020/10/27
Preliminary a, adot, b, bdot, g, gdot:
-0.000021 0.021403 -0.000012 -0.001687 0.021277 0.000000
# Chi-squared of fit: 5.04 DOF: 50 RMS: 0.07
# Min/Max residuals: -0.18 0.20
# Exact a, adot, b, bdot, g, gdot:
1.342712E-05 1.722072E-02 -1.204110E-06 -1.875274E-03 2.054743E-02 -1.524048E-03
# Covariance matrix:
1.9588E-13 -3.1982E-12 8.9827E-15 -2.0349E-13 6.4285E-14 1.1599E-10
-3.1982E-12 3.0222E-10 -9.0066E-13 1.7077E-11 2.5502E-11 -7.5323E-09
8.9827E-15 -9.0066E-13 1.1467E-13 -3.7161E-13 -7.4490E-14 2.2854E-11
-2.0349E-13 1.7077E-11 -3.7161E-13 2.7391E-12 1.2307E-12 -4.5914E-10
6.4285E-14 2.5502E-11 -7.4490E-14 1.2307E-12 3.8538E-12 -3.9919E-10
1.1599E-10 -7.5323E-09 2.2854E-11 -4.5914E-10 -3.9919E-10 2.2294E-07
# lat0 lon0 xBary yBary zBary JD0
2.756411 -74.236664 0.659537 0.036589 -0.762617 2458995.943811
# Heliocentric elements and errors
Epoch: 2458990.5000 = 2020/05/21
Mean Anomaly: 231.98436 +/- 8.186
Argument of Peri: 295.47109 +/- 7.868
Long of Asc Node: 128.64552 +/- 0.026
Inclination: 6.73917 +/- 0.007
Eccentricity: 0.13899147 +/- 0.0152
Semi-Major Axis: 45.10746684 +/- 0.2378
Time of Perihelion: 2498339.3123 +/- 2497.0
Perihelion: 38.83791351 +/- 0.7176
Aphelion: 51.37702017 +/- 0.7391
Period (y) 302.9569 +/- 2.40
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X 12.78435030 +/- 0.0013
Ecliptic Y -47.70420893 +/- 0.0045
Ecliptic Z 2.34044541 +/- 0.0002
Ecliptic XDOT 0.00216457 +/- 0.0000
Ecliptic YDOT 0.00081051 +/- 0.0001
Ecliptic ZDOT -0.00025958 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 49.44298582 +/- 0.0043
Geocenter to KBO 48.66787742 +/- 0.0046
# Hcoef: 8.45
The following table shows the complete astrometric record for 20KO11. 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 (20KO11) followed by the observatory code and reference code for the source of the astrometry.
2020 05 26.44301 19 07 02.160 -19 46 13.71 25.3r 20KO11 266 C~7uln 2020 05 26.50149 19 07 01.972 -19 46 13.95 25.3r 20KO11 266 C~7uln 2020 05 26.55599 19 07 01.797 -19 46 14.17 25.3r 20KO11 266 C~7uln 2020 05 29.44698 19 06 52.460 -19 46 26.05 25.2r 20KO11 266 C~6VL7 2020 05 29.53371 19 06 52.167 -19 46 26.43 25.2r 20KO11 266 C~5Zeg 2020 05 29.61905 19 06 51.877 -19 46 26.79 25.2r 20KO11 266 C~5Zeg 2020 05 31.44139 19 06 45.749 -19 46 34.91 25.2r 20KO11 266 C~5Zeg 2020 05 31.52961 19 06 45.441 -19 46 35.32 25.2r 20KO11 266 C~5Zeg 2020 05 31.61814 19 06 45.131 -19 46 35.72 25.2r 20KO11 266 C~6VL7 2020 06 21.45390 19 05 24.695 -19 48 36.03 25.6r 20KO11 266 C~5Zeg 2020 06 21.53376 19 05 24.353 -19 48 36.57 25.6r 20KO11 266 C~5Zeg 2020 06 21.61261 19 05 24.016 -19 48 37.10 25.6r 20KO11 266 C~6VL7 2020 06 24.43648 19 05 12.079 -19 48 56.78 25.3r 20KO11 266 C~5Zeg 2020 06 24.52739 19 05 11.684 -19 48 57.43 25.3r 20KO11 266 C~5Zeg 2020 06 24.61708 19 05 11.296 -19 48 58.04 25.3r 20KO11 266 C~6VL7 2020 08 14.24286 19 01 44.049 -19 55 49.61 25.3r 20KO11 266 C~6VL7 2020 08 14.33285 19 01 43.745 -19 55 50.35 25.3r 20KO11 266 C~5Zeg 2020 08 14.42134 19 01 43.446 -19 55 51.06 25.3r 20KO11 266 C~5Zeg 2020 10 18.457041 19 00 42.178 -20 01 47.35 20KO11 250 S~5zHA 2020 10 18.463724 19 00 42.184 -20 01 47.44 20KO11 250 S~5zHA 2020 10 18.470043 19 00 42.188 -20 01 47.48 20KO11 250 S~5zHA 2020 10 18.476363 19 00 42.190 -20 01 47.49 20KO11 250 S~5zHA 2020 10 18.482682 19 00 42.197 -20 01 47.45 20KO11 250 S~5zHA 2020 10 27.264002 19 01 00.874 -20 01 57.10 20KO11 250 S~5zHA 2020 10 27.270321 19 01 00.882 -20 01 57.15 20KO11 250 S~5zHA 2020 10 27.276640 19 01 00.889 -20 01 57.14 20KO11 250 S~5zHA 2020 10 27.282960 19 01 00.899 -20 01 57.08 20KO11 250 S~5zHA 2020 10 27.289279 19 01 00.912 -20 01 56.99 20KO11 250 S~5zHA
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 -0.04 0.00 -0.05
2 0.0002 -2.66 -0.04 0.07 -0.05
3 0.0003 -5.14 -0.02 0.13 -0.06
4 0.0082 -137.43 0.04 3.45 -0.03
5 0.0085 -141.59 0.05 3.54 -0.03
6 0.0087 -145.69 0.04 3.66 -0.03
7 0.0137 -232.55 0.02 5.49 -0.03
8 0.0139 -236.92 0.02 5.58 -0.03
9 0.0142 -241.31 0.01 5.69 -0.03
10 0.0712 -1382.91 -0.11 14.93 0.07
11 0.0714 -1387.77 -0.12 14.93 0.07
12 0.0716 -1392.55 -0.12 14.94 0.07
13 0.0794 -1562.16 0.08 14.30 0.06
14 0.0796 -1567.77 0.07 14.28 0.05
15 0.0799 -1573.28 0.08 14.29 0.06
16 0.2185 -4525.04 0.02 -74.47 0.02
17 0.2187 -4529.38 0.02 -74.75 0.02
18 0.2190 -4533.65 0.01 -75.00 0.02
19 0.3970 -5430.85 0.19 -337.60 0.03
20 0.3970 -5430.78 0.10 -337.70 -0.04
21 0.3971 -5430.73 -0.00 -337.74 -0.06
22 0.3971 -5430.70 -0.13 -337.76 -0.04
23 0.3971 -5430.60 -0.18 -337.73 0.01
24 0.4211 -5169.71 0.20 -375.15 -0.04
25 0.4212 -5169.60 0.09 -375.22 -0.07
26 0.4212 -5169.51 -0.03 -375.22 -0.05
27 0.4212 -5169.36 -0.11 -375.17 0.02
28 0.4212 -5169.17 -0.14 -375.10 0.12
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.
20KO11 quality flag:2 Type: CLASSICAL SCATNEAR CLASSICAL axisobj 44.638 45.430 44.237 ecceobj 0.149 0.196 0.119 incobj 6.754 6.738 6.772 qmin 36.918 34.516 37.931 qmax 53.036 57.038 51.266 amean 44.825 45.456 44.448 amin 44.446 44.952 44.081 amax 45.268 46.078 44.852 emean 0.155 0.213 0.127 emin 0.138 0.184 0.108 emax 0.173 0.239 0.144 imean 5.978 6.822 5.721 imin 4.872 4.792 4.896 imax 7.025 8.821 6.542 excite_mean 0.187 0.244 0.161 fracstop 1.000 1.000 1.000 cjmean 3.069 3.046 3.075 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 178.0 178.5 175.3 kozaiamp 180.0 180.0 180.0