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: 20KV55
# Created Sun Dec 22 02:11:13 2024
# Orbit generated from Bernstein formalism
# Fitting 27 observations of 27
# Arc: 77.97d
# First observation: 2020/05/28
# Last observation: 2020/08/14
Preliminary a, adot, b, bdot, g, gdot:
0.000004 0.016097 0.000004 0.007016 0.023306 0.000000
# Chi-squared of fit: 0.61 DOF: 48 RMS: 0.03
# Min/Max residuals: -0.05 0.07
# Exact a, adot, b, bdot, g, gdot:
1.459172E-05 2.241563E-02 4.222712E-06 7.007683E-03 2.437547E-02 1.936216E-03
# Covariance matrix:
1.9713E-13 1.9069E-12 -8.2340E-15 2.3401E-13 1.1130E-12 1.4454E-10
1.9069E-12 1.0457E-07 -7.4077E-11 4.9497E-10 1.9520E-08 3.2508E-07
-8.2340E-15 -7.4077E-11 1.7333E-13 -1.0684E-12 -1.3881E-11 -2.4166E-10
2.3401E-13 4.9497E-10 -1.0684E-12 1.0376E-11 9.4212E-11 1.9329E-09
1.1130E-12 1.9520E-08 -1.3881E-11 9.4212E-11 3.6492E-09 6.1801E-08
1.4454E-10 3.2508E-07 -2.4166E-10 1.9329E-09 6.1801E-08 1.2532E-06
# lat0 lon0 xBary yBary zBary JD0
1.965242 -72.681287 0.654575 0.026205 -0.767431 2458997.947541
# Heliocentric elements and errors
Epoch: 2458990.5000 = 2020/05/21
Mean Anomaly: 89.67061 +/- 24.947
Argument of Peri: 269.14059 +/- 21.910
Long of Asc Node: 280.26261 +/- 0.092
Inclination: 17.41660 +/- 0.238
Eccentricity: 0.06664870 +/- 0.0445
Semi-Major Axis: 41.63570454 +/- 0.9660
Time of Perihelion: 2434548.0394 +/- 6746.7
Perihelion: 38.86073904 +/- 2.0618
Aphelion: 44.41067005 +/- 2.1213
Period (y) 268.6625 +/- 9.35
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X 11.81464666 +/- 0.0302
Ecliptic Y -40.07667374 +/- 0.0970
Ecliptic Z 1.40711806 +/- 0.0035
Ecliptic XDOT 0.00246836 +/- 0.0001
Ecliptic YDOT 0.00057130 +/- 0.0001
Ecliptic ZDOT 0.00079386 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 41.80556942 +/- 0.0934
Geocenter to KBO 41.02485236 +/- 0.1017
# Hcoef: 8.72
The following table shows the complete astrometric record for 20KV55. 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 (20KV55) followed by the observatory code and reference code for the source of the astrometry.
2020 05 28.44674 19 14 00.725 -20 22 06.58 24.9r 20KV55 266 C~6c5c 2020 05 28.50129 19 14 00.518 -20 22 06.63 24.9r 20KV55 266 C~6c5c 2020 05 28.55756 19 14 00.302 -20 22 06.68 24.9r 20KV55 266 C~6c5c 2020 05 30.43935 19 13 53.165 -20 22 08.49 24.9r 20KV55 266 C~6c5c 2020 05 30.53044 19 13 52.806 -20 22 08.60 24.9r 20KV55 266 C~6c5c 2020 05 30.61862 19 13 52.457 -20 22 08.69 24.9r 20KV55 266 C~6c5c 2020 06 01.43269 19 13 45.344 -20 22 10.94 25.1r 20KV55 266 C~6c5c 2020 06 01.47325 19 13 45.180 -20 22 11.00 25.1r 20KV55 266 C~6c5c 2020 06 01.60571 19 13 44.639 -20 22 11.18 25.1r 20KV55 266 C~6c5c 2020 06 20.45583 19 12 20.091 -20 22 59.61 24.8r 20KV55 266 C~6c5c 2020 06 20.52860 19 12 19.728 -20 22 59.88 24.8r 20KV55 266 C~6c5c 2020 06 20.62233 19 12 19.263 -20 23 00.19 24.8r 20KV55 266 C~6c5c 2020 06 22.44948 19 12 10.287 -20 23 07.08 24.7r 20KV55 266 C~6c5c 2020 06 22.52092 19 12 09.928 -20 23 07.35 24.7r 20KV55 266 C~6c5c 2020 06 22.59118 19 12 09.574 -20 23 07.60 24.7r 20KV55 266 C~6c5c 2020 06 25.44823 19 11 55.334 -20 23 18.80 24.7r 20KV55 266 C~6c5c 2020 06 25.53213 19 11 54.905 -20 23 19.13 24.7r 20KV55 266 C~6c5c 2020 06 25.61487 19 11 54.483 -20 23 19.45 24.7r 20KV55 266 C~6c5c 2020 08 12.26680 19 08 01.340 -20 27 10.08 25.0r 20KV55 266 C~6c5c 2020 08 12.34843 19 08 00.998 -20 27 10.46 25.0r 20KV55 266 C~6c5c 2020 08 12.42950 19 08 00.660 -20 27 10.81 25.0r 20KV55 266 C~6c5c 2020 08 13.24332 19 07 57.363 -20 27 14.41 24.8r 20KV55 266 C~6c5c 2020 08 13.33331 19 07 56.992 -20 27 14.82 24.8r 20KV55 266 C~6c5c 2020 08 13.42301 19 07 56.622 -20 27 15.21 24.8r 20KV55 266 C~6c5c 2020 08 14.24286 19 07 53.353 -20 27 18.85 24.9r 20KV55 266 C~6c5c 2020 08 14.33285 19 07 52.987 -20 27 19.26 24.9r 20KV55 266 C~6c5c 2020 08 14.42134 19 07 52.627 -20 27 19.63 24.9r 20KV55 266 C~6c5c
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 -0.01 0.00 0.07
2 0.0001 -2.89 0.00 0.32 0.07
3 0.0003 -5.91 -0.01 0.65 0.07
4 0.0055 -105.70 0.01 11.52 -0.02
5 0.0057 -110.72 0.02 12.05 -0.02
6 0.0059 -115.60 0.01 12.58 -0.02
7 0.0109 -215.11 -0.01 22.95 -0.05
8 0.0110 -217.41 -0.00 23.18 -0.05
9 0.0114 -224.98 -0.01 23.96 -0.05
10 0.0630 -1410.60 0.01 124.34 0.02
11 0.0632 -1415.70 0.00 124.70 0.01
12 0.0635 -1422.23 0.01 125.20 0.02
13 0.0685 -1548.33 -0.01 133.97 -0.05
14 0.0686 -1553.37 0.00 134.33 -0.05
15 0.0688 -1558.34 -0.01 134.69 -0.04
16 0.0767 -1758.43 -0.00 148.28 0.03
17 0.0769 -1764.45 -0.00 148.69 0.03
18 0.0771 -1770.38 -0.00 149.10 0.03
19 0.2076 -5052.68 -0.01 314.15 0.00
20 0.2078 -5057.50 -0.02 314.34 -0.01
21 0.2080 -5062.26 -0.00 314.55 -0.01
22 0.2103 -5108.73 -0.01 316.41 0.03
23 0.2105 -5113.96 -0.01 316.61 0.03
24 0.2107 -5119.17 -0.01 316.83 0.02
25 0.2130 -5165.25 0.02 318.60 -0.01
26 0.2132 -5170.41 0.02 318.79 -0.02
27 0.2135 -5175.48 0.01 319.02 -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.
20KV55 quality flag:1 Type: SCATEXTD SCATEXTD SCATNEAR axisobj 41.143 45.586 38.506 ecceobj 0.065 0.191 0.110 incobj 17.504 16.754 18.345 qmin 38.038 36.316 32.676 qmax 44.876 55.856 45.255 amean 41.367 45.878 38.708 amin 41.046 45.479 38.336 amax 41.700 46.354 39.282 emean 0.064 0.190 0.124 emin 0.052 0.175 0.099 emax 0.077 0.206 0.154 imean 19.224 18.482 19.102 imin 18.614 17.924 17.024 imax 19.760 19.001 21.353 excite_mean 0.335 0.370 0.350 fracstop 1.000 1.000 1.000 cjmean 2.936 2.955 2.904 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 178.4 173.1 183.9 kozaiamp 180.0 179.9 180.0