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: 20KC53
# Created Sun Apr 27 01:11:20 2025
# 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 0.015861 0.000003 0.000447 0.021969 0.000000
# Chi-squared of fit: 0.94 DOF: 48 RMS: 0.03
# Min/Max residuals: -0.09 0.05
# Exact a, adot, b, bdot, g, gdot:
1.491578E-05 2.154616E-02 7.131463E-07 4.383938E-04 2.292776E-02 1.619204E-04
# Covariance matrix:
1.2306E-13 1.7024E-11 -7.6025E-15 -5.6421E-15 3.6884E-12 1.5888E-10
1.7024E-11 1.4035E-07 -5.4073E-11 -1.3961E-10 2.6105E-08 4.4168E-07
-7.6025E-15 -5.4073E-11 1.0930E-13 -4.7376E-13 -1.0069E-11 -1.7286E-10
-5.6421E-15 -1.3961E-10 -4.7376E-13 8.2703E-12 -2.5814E-11 -4.0160E-10
3.6884E-12 2.6105E-08 -1.0069E-11 -2.5814E-11 4.8614E-09 8.3513E-08
1.5888E-10 4.4168E-07 -1.7286E-10 -4.0160E-10 8.3513E-08 1.7213E-06
# lat0 lon0 xBary yBary zBary JD0
2.109404 -73.157536 0.648170 0.028335 -0.772773 2458997.947541
# Heliocentric elements and errors
Epoch: 2458990.5000 = 2020/05/21
Mean Anomaly: 274.42707 +/- 225.582
Argument of Peri: 146.59439 +/- 234.557
Long of Asc Node: 225.83853 +/- 0.444
Inclination: 2.38831 +/- 0.011
Eccentricity: 0.00746490 +/- 0.0587
Semi-Major Axis: 44.42416928 +/- 1.0401
Time of Perihelion: 2484698.0859 +/- 67762.7
Perihelion: 44.09254746 +/- 2.8049
Aphelion: 44.75579111 +/- 2.8107
Period (y) 296.0992 +/- 10.40
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X 12.23790144 +/- 0.0384
Ecliptic Y -42.65085370 +/- 0.1269
Ecliptic Z 1.60547973 +/- 0.0049
Ecliptic XDOT 0.00247567 +/- 0.0001
Ecliptic YDOT 0.00073235 +/- 0.0001
Ecliptic ZDOT 0.00005279 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 44.40089096 +/- 0.1223
Geocenter to KBO 43.61524608 +/- 0.1326
# Hcoef: 9.53
The following table shows the complete astrometric record for 20KC53. 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 (20KC53) followed by the observatory code and reference code for the source of the astrometry.
2020 05 28.44674 19 11 55.264 -20 17 05.12 25.4r 20KC53 266 C~7ulo 2020 05 28.50129 19 11 55.070 -20 17 05.35 25.4r 20KC53 266 C~7ulo 2020 05 28.55756 19 11 54.868 -20 17 05.57 25.4r 20KC53 266 C~7ulo 2020 05 29.44698 19 11 51.746 -20 17 08.99 26.0r 20KC53 266 C~6VL9 2020 05 29.53371 19 11 51.431 -20 17 09.35 26.0r 20KC53 266 C~6VL9 2020 05 29.61905 19 11 51.121 -20 17 09.69 26.0r 20KC53 266 C~6VL9 2020 05 30.44075 19 11 48.182 -20 17 13.08 25.9r 20KC53 266 C~6VL9 2020 05 30.53044 19 11 47.851 -20 17 13.47 25.9r 20KC53 266 C~6VL9 2020 05 30.61862 19 11 47.525 -20 17 13.84 25.9r 20KC53 266 C~6VL9 2020 05 31.44139 19 11 44.542 -20 17 17.36 26.3r 20KC53 266 C~6VL9 2020 05 31.52961 19 11 44.211 -20 17 17.75 26.3r 20KC53 266 C~6VL9 2020 05 31.61814 19 11 43.879 -20 17 18.13 26.3r 20KC53 266 C~6VL9 2020 06 01.43269 19 11 40.878 -20 17 21.73 26.1r 20KC53 266 C~6VL9 2020 06 01.47325 19 11 40.724 -20 17 21.92 26.1r 20KC53 266 C~6VL9 2020 06 01.60571 19 11 40.219 -20 17 22.51 26.1r 20KC53 266 C~6VL9 2020 06 21.45390 19 10 16.670 -20 19 15.14 26.2r 20KC53 266 C~6VL9 2020 06 21.53376 19 10 16.297 -20 19 15.67 26.2r 20KC53 266 C~6VL9 2020 06 21.61261 19 10 15.929 -20 19 16.18 26.2r 20KC53 266 C~6VL9 2020 06 24.43648 19 10 02.876 -20 19 35.49 25.8r 20KC53 266 C~6VL9 2020 06 24.52180 19 10 02.471 -20 19 36.08 25.8r 20KC53 266 C~6VL9 2020 06 24.61708 19 10 02.020 -20 19 36.72 25.8r 20KC53 266 C~6VL9 2020 08 12.26680 19 06 20.683 -20 25 56.26 26.0r 20KC53 266 C~6VL9 2020 08 12.34843 19 06 20.367 -20 25 56.88 26.0r 20KC53 266 C~6VL9 2020 08 12.42950 19 06 20.054 -20 25 57.48 26.0r 20KC53 266 C~6VL9 2020 08 14.24286 19 06 13.301 -20 26 11.10 25.8r 20KC53 266 C~6VL9 2020 08 14.33285 19 06 12.963 -20 26 11.78 25.8r 20KC53 266 C~6VL9 2020 08 14.42134 19 06 12.631 -20 26 12.42 25.8r 20KC53 266 C~6VL9
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 -0.08
2 0.0001 -2.74 -0.00 0.11 -0.09
3 0.0003 -5.58 -0.01 0.24 -0.09
4 0.0027 -49.60 0.04 2.24 0.02
5 0.0030 -54.04 0.04 2.43 0.03
6 0.0032 -58.41 0.05 2.62 0.03
7 0.0055 -99.86 -0.04 4.33 0.04
8 0.0057 -104.53 -0.04 4.52 0.04
9 0.0059 -109.13 -0.04 4.71 0.03
10 0.0082 -151.22 -0.01 6.37 0.02
11 0.0084 -155.89 -0.01 6.55 0.02
12 0.0087 -160.57 0.00 6.75 0.02
13 0.0109 -202.91 0.01 8.35 0.00
14 0.0110 -205.09 0.01 8.43 0.00
15 0.0114 -212.21 0.02 8.71 0.00
16 0.0657 -1392.56 -0.04 39.66 -0.01
17 0.0659 -1397.84 -0.04 39.77 -0.01
18 0.0662 -1403.04 -0.04 39.88 -0.01
19 0.0739 -1587.64 0.04 42.79 0.02
20 0.0741 -1593.37 0.04 42.89 0.02
21 0.0744 -1599.74 0.04 43.01 0.02
22 0.2076 -4735.81 -0.00 31.02 0.03
23 0.2078 -4740.30 0.00 30.91 0.03
24 0.2080 -4744.74 0.01 30.82 0.03
25 0.2130 -4840.65 -0.01 28.14 -0.03
26 0.2132 -4845.45 -0.00 28.01 -0.03
27 0.2135 -4850.16 -0.00 27.91 -0.03
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.
20KC53 quality flag:1 Type: CLASSICAL CLASSICAL SCATNEAR axisobj 43.885 49.375 41.186 ecceobj 0.015 0.170 0.153 incobj 2.401 2.369 2.437 qmin 42.532 40.402 34.670 qmax 45.865 59.418 48.306 amean 44.107 49.700 41.209 amin 43.771 49.261 40.721 amax 44.455 50.193 41.702 emean 0.017 0.173 0.132 emin 0.001 0.162 0.108 emax 0.032 0.184 0.159 imean 3.862 3.568 4.431 imin 3.256 3.303 1.056 imax 4.424 3.827 6.245 excite_mean 0.070 0.184 0.155 fracstop 1.000 1.000 1.000 cjmean 3.097 3.131 3.043 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 181.5 172.4 177.3 kozaiamp 180.0 180.0 179.9