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: 20BE102
# Created Fri Nov 22 02:11:03 2024
# Orbit generated from Bernstein formalism
# Fitting 13 observations of 13
# Arc: 2.21y
# First observation: 2020/01/24
# Last observation: 2022/04/09
Preliminary a, adot, b, bdot, g, gdot:
0.000005 0.003701 0.000000 -0.000089 0.009065 0.000000
# Chi-squared of fit: 6.31 DOF: 20 RMS: 0.12
# Min/Max residuals: -0.18 0.34
# Exact a, adot, b, bdot, g, gdot:
6.917421E-06 3.703997E-03 7.110266E-08 -8.893918E-05 9.070877E-03 -1.239100E-03
# Covariance matrix:
4.8801E-13 -3.5414E-13 -1.9631E-15 3.4790E-15 -2.2419E-13 -1.3423E-11
-3.5414E-13 1.8138E-12 4.3089E-14 -9.4620E-14 4.0886E-12 3.2704E-10
-1.9631E-15 4.3089E-14 4.8017E-13 -2.6236E-13 1.1007E-13 9.4825E-12
3.4790E-15 -9.4620E-14 -2.6236E-13 1.9067E-13 -2.4475E-13 -2.2116E-11
-2.2419E-13 4.0886E-12 1.1007E-13 -2.4475E-13 1.0305E-11 8.4080E-10
-1.3423E-11 3.2704E-10 9.4825E-12 -2.2116E-11 8.4080E-10 7.4264E-08
# lat0 lon0 xBary yBary zBary JD0
5.274375 143.880631 0.344845 0.085582 -0.926968 2458872.922331
# Heliocentric elements and errors
Epoch: 2458870.5000 = 2020/01/22
Mean Anomaly: 227.01757 +/- 4.709
Argument of Peri: 268.07415 +/- 3.343
Long of Asc Node: 39.00187 +/- 0.074
Inclination: 5.40662 +/- 0.002
Eccentricity: 0.56001913 +/- 0.0098
Semi-Major Axis: 75.02200768 +/- 1.2238
Time of Perihelion: 2546544.9810 +/- 2244.1
Perihelion: 33.00824857 +/- 0.9138
Aphelion: 117.03576679 +/- 2.0470
Period (y) 649.8172 +/- 15.90
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X -89.22130086 +/- 0.0314
Ecliptic Y 65.52898242 +/- 0.0229
Ecliptic Z 10.13408025 +/- 0.0036
Ecliptic XDOT -0.00035188 +/- 0.0001
Ecliptic YDOT -0.00111894 +/- 0.0000
Ecliptic ZDOT -0.00006134 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 111.16288790 +/- 0.0286
Geocenter to KBO 110.24291975 +/- 0.0390
# Hcoef: 5.07
The following table shows the complete astrometric record for 20BE102. 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 (20BE102) followed by the observatory code and reference code for the source of the astrometry.
2020 01 24.42153 09 52 08.049 +18 31 53.07 25.5r 20BE102 568 C~5fur 2020 01 24.66304 09 52 07.597 +18 31 55.53 25.6r 20BE102 568 C~5fur 2021 01 18.26854 09 53 07.669 +18 26 21.17 25.4r 20BE102 304 C~5fur 2021 01 18.32667 09 53 07.569 +18 26 21.76 25.5r 20BE102 304 C~5fur 2021 01 19.31113 09 53 05.840 +18 26 31.85 25.5r 20BE102 304 C~5fur 2021 04 12.04879 09 50 39.306 +18 37 50.35 25.4r 20BE102 304 C~5fur 2021 04 12.11902 09 50 39.245 +18 37 50.74 25.3r 20BE102 304 C~5fur 2022 03 07.10340 09 52 24.396 +18 29 47.04 25.4r 20BE102 304 C~5fur 2022 03 07.11405 09 52 24.380 +18 29 46.82 25.5r 20BE102 304 C~5fur 2022 03 07.20158 09 52 24.209 +18 29 47.52 25.4r 20BE102 304 C~5fur 2022 04 08.09271 09 51 33.675 +18 33 04.60 25.4r 20BE102 304 C~5fur 2022 04 08.15811 09 51 33.580 +18 33 04.74 25.5r 20BE102 304 C~5fur 2022 04 09.07916 09 51 32.513 +18 33 08.06 25.3r 20BE102 304 C~5fur
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 -0.09 0.00 -0.05
2 0.0007 -6.88 0.01 0.14 -0.11
3 0.9852 910.47 -0.16 -24.20 0.15
4 0.9854 908.93 -0.08 -24.13 0.15
5 0.9881 882.36 0.34 -23.01 0.05
6 1.2146 -1308.28 -0.03 -90.12 -0.16
7 1.2148 -1309.23 0.10 -90.04 0.10
8 2.1155 261.47 -0.11 -39.73 0.14
9 2.1155 261.33 0.05 -40.01 -0.13
10 2.1158 258.81 0.03 -40.18 -0.18
11 2.2031 -484.20 0.05 -98.18 0.05
12 2.2032 -485.52 -0.12 -98.50 -0.11
13 2.2058 -500.92 0.03 -100.51 0.10
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.
20BE102 quality flag:2 Type: 4:1EEE SCATNEAR SCATNEAR axisobj 75.045 79.982 72.752 ecceobj 0.555 0.592 0.536 incobj 5.415 5.418 5.413 qmin 32.843 32.022 33.286 qmax 122.663 141.347 118.726 amean 75.875 77.854 71.967 amin 74.281 69.725 66.877 amax 78.087 87.188 76.462 emean 0.557 0.575 0.524 emin 0.545 0.521 0.484 emax 0.571 0.621 0.553 imean 5.086 6.577 5.077 imin 4.729 5.037 4.209 imax 5.413 8.195 5.997 excite_mean 0.564 0.587 0.532 fracstop 1.000 1.000 1.000 cjmean 3.022 2.998 3.040 libcent 0 180.1 -180.0 -180.0 libamp 0 172.5 -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 208.6 162.7 196.7 kozaiamp 180.0 180.0 180.0