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: 20KK55
# Created Mon Apr 28 01:11:21 2025
# Orbit generated from Bernstein formalism
# Fitting 18 observations of 18
# Arc: 76.97d
# First observation: 2020/05/29
# Last observation: 2020/08/14
Preliminary a, adot, b, bdot, g, gdot:
0.000001 0.031704 0.000005 0.002167 0.028540 0.000000
# Chi-squared of fit: 0.31 DOF: 30 RMS: 0.02
# Min/Max residuals: -0.04 0.04
# Exact a, adot, b, bdot, g, gdot:
2.099980E-05 3.993496E-02 1.166084E-06 2.165694E-03 2.992198E-02 -2.771801E-03
# Covariance matrix:
2.7730E-13 3.4120E-11 -2.5269E-14 1.3595E-13 7.3236E-12 2.4973E-10
3.4120E-11 1.7425E-07 -1.0784E-10 2.4851E-10 3.2200E-08 4.2555E-07
-2.5269E-14 -1.0784E-10 2.4246E-13 -1.1812E-12 -1.9959E-11 -2.6946E-10
1.3595E-13 2.4851E-10 -1.1812E-12 1.1542E-11 4.6677E-11 7.5559E-10
7.3236E-12 3.2200E-08 -1.9959E-11 4.6677E-11 5.9580E-09 8.0079E-08
2.4973E-10 4.2555E-07 -2.6946E-10 7.5559E-10 8.0079E-08 1.3232E-06
# lat0 lon0 xBary yBary zBary JD0
2.216066 -73.273639 0.633510 0.030242 -0.784820 2458998.947781
# Heliocentric elements and errors
Epoch: 2458990.5000 = 2020/05/21
Mean Anomaly: 356.81448 +/- 1.101
Argument of Peri: 48.55480 +/- 4.532
Long of Asc Node: 251.07737 +/- 0.273
Inclination: 3.80862 +/- 0.026
Eccentricity: 0.56811804 +/- 0.0128
Semi-Major Axis: 78.39156596 +/- 2.5473
Time of Perihelion: 2461233.7638 +/- 767.7
Perihelion: 33.85590325 +/- 1.4886
Aphelion: 122.92722868 +/- 4.1184
Period (y) 694.0843 +/- 33.83
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X 9.23622764 +/- 0.0248
Ecliptic Y -32.92363606 +/- 0.0825
Ecliptic Z 1.29240374 +/- 0.0033
Ecliptic XDOT 0.00343241 +/- 0.0001
Ecliptic YDOT 0.00130523 +/- 0.0001
Ecliptic ZDOT 0.00018797 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 34.21905931 +/- 0.0797
Geocenter to KBO 33.42025215 +/- 0.0862
# Hcoef: 11.27
The following table shows the complete astrometric record for 20KK55. 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 (20KK55) followed by the observatory code and reference code for the source of the astrometry.
2020 05 29.44698 19 11 22.470 -20 11 35.16 26.3r 20KK55 266 C~6c5b 2020 05 29.53371 19 11 22.099 -20 11 35.47 26.3r 20KK55 266 C~6c5b 2020 05 29.61905 19 11 21.732 -20 11 35.76 26.3r 20KK55 266 C~6c5b 2020 05 31.44139 19 11 13.980 -20 11 42.36 26.8r 20KK55 266 C~6c5b 2020 05 31.52961 19 11 13.589 -20 11 42.71 26.8r 20KK55 266 C~6c5b 2020 05 31.61814 19 11 13.195 -20 11 43.04 26.8r 20KK55 266 C~6c5b 2020 06 21.45390 19 09 28.865 -20 13 37.12 26.6r 20KK55 266 C~6c5b 2020 06 21.53376 19 09 28.414 -20 13 37.67 26.6r 20KK55 266 C~6c5b 2020 06 21.61261 19 09 27.970 -20 13 38.19 26.6r 20KK55 266 C~6c5b 2020 06 24.43648 19 09 12.206 -20 13 58.34 26.4r 20KK55 266 C~6c5b 2020 06 24.52599 19 09 11.692 -20 13 58.98 26.4r 20KK55 266 C~6c5b 2020 06 24.61708 19 09 11.170 -20 13 59.62 26.4r 20KK55 266 C~6c5b 2020 08 12.26680 19 04 45.018 -20 20 48.21 26.7r 20KK55 266 C~6c5b 2020 08 12.34843 19 04 44.645 -20 20 48.88 26.7r 20KK55 266 C~6c5b 2020 08 12.42950 19 04 44.276 -20 20 49.52 26.7r 20KK55 266 C~6c5b 2020 08 14.24286 19 04 36.349 -20 21 04.15 26.5r 20KK55 266 C~6c5b 2020 08 14.33285 19 04 35.951 -20 21 04.88 26.5r 20KK55 266 C~6c5b 2020 08 14.42134 19 04 35.561 -20 21 05.57 26.5r 20KK55 266 C~6c5b
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 0.02 0.00 -0.00
2 0.0002 -5.22 0.03 0.33 -0.00
3 0.0005 -10.39 0.02 0.67 -0.01
4 0.0055 -119.51 -0.03 7.42 -0.00
5 0.0057 -125.01 -0.03 7.74 -0.00
6 0.0059 -130.56 -0.03 8.09 -0.00
7 0.0630 -1602.23 0.03 71.73 0.04
8 0.0632 -1608.60 0.03 71.94 0.04
9 0.0634 -1614.87 0.03 72.17 0.04
10 0.0712 -1837.58 -0.02 78.55 -0.04
11 0.0714 -1844.84 -0.02 78.77 -0.03
12 0.0716 -1852.21 -0.03 79.01 -0.04
13 0.2048 -5620.23 0.01 105.18 0.01
14 0.2051 -5625.53 0.01 105.11 0.01
15 0.2053 -5630.76 0.01 105.05 0.01
16 0.2103 -5743.26 -0.00 102.99 -0.01
17 0.2105 -5748.91 -0.01 102.89 -0.01
18 0.2107 -5754.44 -0.01 102.82 -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.
20KK55 quality flag:1 Type: SCATNEAR SCATNEAR SCATNEAR axisobj 76.093 96.791 65.303 ecceobj 0.556 0.653 0.490 incobj 3.828 3.738 3.927 qmin 32.925 32.783 32.732 qmax 144.129 173.313 122.577 amean 80.916 94.650 71.415 amin 74.291 87.988 63.736 amax 89.050 103.600 78.059 emean 0.581 0.644 0.529 emin 0.542 0.614 0.474 emax 0.620 0.673 0.570 imean 5.401 4.960 5.955 imin 4.479 4.306 4.889 imax 6.303 6.169 6.969 excite_mean 0.589 0.649 0.539 fracstop 1.000 1.000 1.000 cjmean 3.026 3.021 3.019 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 178.3 182.7 182.4 kozaiamp 180.0 179.9 180.0