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: 20KX55
# Created Wed May 8 01:18:31 2024
# Orbit generated from Bernstein formalism
# Fitting 37 observations of 37
# Arc: 1.15y
# First observation: 2020/05/28
# Last observation: 2021/07/24
Preliminary a, adot, b, bdot, g, gdot:
-0.000013 0.036872 0.000001 -0.001155 0.028821 0.000000
# Chi-squared of fit: 7.05 DOF: 68 RMS: 0.08
# Min/Max residuals: -0.26 0.31
# Exact a, adot, b, bdot, g, gdot:
2.002647E-05 3.667530E-02 -6.013309E-07 -1.146968E-03 2.874121E-02 -1.021262E-03
# Covariance matrix:
1.7304E-13 2.2024E-12 5.5802E-15 -1.1168E-13 9.6864E-13 9.3034E-11
2.2024E-12 8.9292E-11 2.3910E-13 -4.4649E-12 3.4371E-11 3.7341E-09
5.5802E-15 2.3910E-13 6.5440E-14 -7.8599E-14 9.1275E-14 1.0039E-11
-1.1168E-13 -4.4649E-12 -7.8599E-14 3.9817E-13 -1.7183E-12 -1.8716E-10
9.6864E-13 3.4371E-11 9.1275E-14 -1.7183E-12 1.3429E-11 1.4364E-09
9.3034E-11 3.7341E-09 1.0039E-11 -1.8716E-10 1.4364E-09 1.5654E-07
# lat0 lon0 xBary yBary zBary JD0
2.145208 -72.566847 0.656108 0.028567 -0.766037 2458997.947541
# Heliocentric elements and errors
Epoch: 2458990.5000 = 2020/05/21
Mean Anomaly: 357.44462 +/- 0.581
Argument of Peri: 138.08128 +/- 1.899
Long of Asc Node: 156.47219 +/- 0.014
Inclination: 2.73452 +/- 0.001
Eccentricity: 0.47904244 +/- 0.0015
Semi-Major Axis: 68.05845003 +/- 0.0983
Time of Perihelion: 2460446.2084 +/- 331.2
Perihelion: 35.45556416 +/- 0.1134
Aphelion: 100.66133590 +/- 0.1771
Period (y) 561.4761 +/- 1.22
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X 10.02587602 +/- 0.0013
Ecliptic Y -34.10657737 +/- 0.0042
Ecliptic Z 1.30243723 +/- 0.0002
Ecliptic XDOT 0.00331339 +/- 0.0000
Ecliptic YDOT 0.00113905 +/- 0.0000
Ecliptic ZDOT -0.00011306 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 35.57348947 +/- 0.0041
Geocenter to KBO 34.79324328 +/- 0.0044
# Hcoef: 8.85
The following table shows the complete astrometric record for 20KX55. 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 (20KX55) followed by the observatory code and reference code for the source of the astrometry.
2020 05 28.44674 19 14 23.919 -20 10 31.78 24.4r 20KX55 266 C~6c5c 2020 05 28.50129 19 14 23.700 -20 10 32.08 24.4r 20KX55 266 C~6c5c 2020 05 28.55756 19 14 23.472 -20 10 32.38 24.4r 20KX55 266 C~6c5c 2020 05 30.43935 19 14 15.934 -20 10 42.62 24.3r 20KX55 266 C~6c5c 2020 05 30.53044 19 14 15.553 -20 10 43.15 24.3r 20KX55 266 C~6c5c 2020 05 30.61862 19 14 15.183 -20 10 43.64 24.3r 20KX55 266 C~6c5c 2020 06 01.43269 19 14 07.646 -20 10 54.23 24.5r 20KX55 266 C~6c5c 2020 06 01.47325 19 14 07.471 -20 10 54.48 24.5r 20KX55 266 C~6c5c 2020 06 01.60571 19 14 06.895 -20 10 55.27 24.5r 20KX55 266 C~6c5c 2020 06 20.45583 19 12 35.927 -20 13 16.47 24.3r 20KX55 266 C~6c5c 2020 06 20.52860 19 12 35.533 -20 13 17.11 24.3r 20KX55 266 C~6c5c 2020 06 20.62233 19 12 35.028 -20 13 17.91 24.3r 20KX55 266 C~6c5c 2020 06 22.44948 19 12 25.283 -20 13 34.25 24.1r 20KX55 266 C~6c5c 2020 06 22.52092 19 12 24.891 -20 13 34.89 24.1r 20KX55 266 C~6c5c 2020 06 22.59118 19 12 24.506 -20 13 35.51 24.1r 20KX55 266 C~6c5c 2020 06 25.44823 19 12 09.023 -20 14 01.78 24.2r 20KX55 266 C~6c5c 2020 06 25.53213 19 12 08.556 -20 14 02.55 24.2r 20KX55 266 C~6c5c 2020 06 25.61487 19 12 08.096 -20 14 03.30 24.2r 20KX55 266 C~6c5c 2020 08 12.26680 19 07 54.697 -20 22 16.80 24.4r 20KX55 266 C~6c5c 2020 08 12.34843 19 07 54.330 -20 22 17.63 24.4r 20KX55 266 C~6c5c 2020 08 12.42950 19 07 53.967 -20 22 18.42 24.4r 20KX55 266 C~6c5c 2020 08 13.24332 19 07 50.448 -20 22 26.52 24.3r 20KX55 266 C~6c5c 2020 08 13.33331 19 07 50.050 -20 22 27.42 24.3r 20KX55 266 C~6c5c 2020 08 13.42301 19 07 49.655 -20 22 28.30 24.3r 20KX55 266 C~6c5c 2020 08 14.24286 19 07 46.165 -20 22 36.37 24.2r 20KX55 266 C~6c5c 2020 08 14.33285 19 07 45.774 -20 22 37.26 24.2r 20KX55 266 C~6c5c 2020 08 14.42134 19 07 45.390 -20 22 38.12 24.2r 20KX55 266 C~6c5c 2021 07 20.623181 19 18 50.197 -20 06 03.67 20KX55 250 S~7Bjx 2021 07 20.629500 19 18 50.156 -20 06 03.84 20KX55 250 S~7Bjx 2021 07 20.635819 19 18 50.109 -20 06 03.96 20KX55 250 S~7Bjx 2021 07 20.642139 19 18 50.064 -20 06 04.00 20KX55 250 S~7Bjx 2021 07 20.648458 19 18 50.022 -20 06 03.98 20KX55 250 S~7Bjx 2021 07 24.199130 19 18 30.567 -20 06 46.12 20KX55 250 S~7Bjx 2021 07 24.205449 19 18 30.523 -20 06 46.27 20KX55 250 S~7Bjx 2021 07 24.211768 19 18 30.478 -20 06 46.32 20KX55 250 S~7Bjx 2021 07 24.218088 19 18 30.434 -20 06 46.33 20KX55 250 S~7Bjx 2021 07 24.224407 19 18 30.395 -20 06 46.28 20KX55 250 S~7Bjx
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 0.03 0.00 -0.01
2 0.0001 -3.10 0.04 0.09 -0.01
3 0.0003 -6.32 0.03 0.20 -0.01
4 0.0055 -112.89 0.02 3.51 -0.00
5 0.0057 -118.28 0.02 3.66 -0.00
6 0.0059 -123.51 0.02 3.84 -0.00
7 0.0109 -230.11 0.02 6.77 -0.04
8 0.0110 -232.59 0.02 6.84 -0.04
9 0.0114 -240.73 0.02 7.08 -0.04
10 0.0630 -1528.94 -0.04 27.59 0.00
11 0.0632 -1534.52 -0.04 27.64 0.00
12 0.0635 -1541.67 -0.03 27.73 0.00
13 0.0685 -1679.81 -0.03 28.54 -0.01
14 0.0686 -1685.36 -0.04 28.59 -0.00
15 0.0688 -1690.82 -0.05 28.65 -0.00
16 0.0767 -1910.33 -0.04 29.56 0.02
17 0.0769 -1916.95 -0.03 29.60 0.02
18 0.0771 -1923.46 -0.03 29.66 0.02
19 0.2076 -5523.04 0.01 -31.03 0.01
20 0.2078 -5528.27 0.00 -31.25 0.00
21 0.2080 -5533.44 0.01 -31.44 0.01
22 0.2103 -5583.56 0.02 -33.69 -0.00
23 0.2105 -5589.23 0.02 -33.92 0.00
24 0.2107 -5594.85 0.03 -34.15 -0.00
25 0.2130 -5644.57 0.01 -36.42 0.03
26 0.2132 -5650.14 0.01 -36.66 0.03
27 0.2135 -5655.61 0.01 -36.88 0.03
28 1.1449 3753.36 0.31 -222.71 0.02
29 1.1449 3752.77 0.21 -222.80 -0.06
30 1.1449 3752.10 0.04 -222.83 -0.09
31 1.1450 3751.46 -0.10 -222.78 -0.03
32 1.1450 3750.88 -0.18 -222.69 0.07
33 1.1547 3473.58 0.20 -227.91 -0.03
34 1.1547 3472.95 0.06 -227.98 -0.08
35 1.1547 3472.31 -0.09 -227.94 -0.04
36 1.1547 3471.70 -0.21 -227.87 0.04
37 1.1548 3471.16 -0.26 -227.75 0.18
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.
20KX55 quality flag:2 Type: SCATNEAR SCATNEAR13:4EEEEEE axisobj 66.368 67.596 65.477 ecceobj 0.467 0.477 0.461 incobj 2.736 2.734 2.737 qmin 34.629 34.792 34.752 qmax 102.096 104.780 99.504 amean 66.660 68.378 66.063 amin 63.882 66.140 65.140 amax 68.724 70.204 67.445 emean 0.468 0.479 0.464 emin 0.438 0.460 0.454 emax 0.486 0.493 0.475 imean 2.130 2.561 2.129 imin 1.528 2.065 2.031 imax 2.571 3.046 2.257 excite_mean 0.470 0.482 0.465 fracstop 1.000 1.000 1.000 cjmean 3.079 3.082 3.078 libcent 0 -180.0 -180.0 179.8 libamp 0 -180.0 -180.0 125.8 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 197.7 181.2 208.5 kozaiamp 180.0 180.0 179.9