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: 23PB5
# Created Wed Apr 16 01:11:35 2025
# Orbit generated from Bernstein formalism
# Fitting 8 observations of 8
# Arc: 1.14y
# First observation: 2023/08/13
# Last observation: 2024/10/04
Preliminary a, adot, b, bdot, g, gdot:
-0.000016 0.024702 -0.000001 -0.011834 0.026098 0.000000
# Chi-squared of fit: 1.39 DOF: 10 RMS: 0.07
# Min/Max residuals: -0.22 0.09
# Exact a, adot, b, bdot, g, gdot:
1.502894E-05 2.500978E-02 -6.940774E-06 -1.197631E-02 2.644769E-02 -1.771317E-03
# Covariance matrix:
6.9347E-13 3.1071E-13 4.8219E-14 -2.0120E-13 1.2899E-12 1.4784E-11
3.1071E-13 5.3966E-11 4.1712E-12 -5.8213E-11 2.2220E-11 3.7211E-09
4.8219E-14 4.1712E-12 6.1627E-13 -4.8707E-12 1.7466E-12 2.9231E-10
-2.0120E-13 -5.8213E-11 -4.8707E-12 6.5241E-11 -2.3149E-11 -4.1125E-09
1.2899E-12 2.2220E-11 1.7466E-12 -2.3149E-11 1.1992E-11 1.4848E-09
1.4784E-11 3.7211E-09 2.9231E-10 -4.1125E-09 1.4848E-09 2.6275E-07
# lat0 lon0 xBary yBary zBary JD0
6.219042 -53.595552 -0.230761 0.106023 -0.975437 2460169.849191
# Heliocentric elements and errors
Epoch: 2460160.5000 = 2023/08/04
Mean Anomaly: 328.65247 +/- 6.600
Argument of Peri: 204.50771 +/- 8.627
Long of Asc Node: 139.19317 +/- 0.005
Inclination: 26.25131 +/- 0.009
Eccentricity: 0.10478217 +/- 0.0123
Semi-Major Axis: 42.44532750 +/- 0.1094
Time of Perihelion: 2468955.6656 +/- 1851.3
Perihelion: 37.99781392 +/- 0.5301
Aphelion: 46.89284108 +/- 0.5348
Period (y) 276.5369 +/- 1.07
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X 23.08483723 +/- 0.0029
Ecliptic Y -30.90320246 +/- 0.0040
Ecliptic Z 4.09579485 +/- 0.0005
Ecliptic XDOT 0.00205188 +/- 0.0000
Ecliptic YDOT 0.00158330 +/- 0.0000
Ecliptic ZDOT -0.00125234 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 38.79037468 +/- 0.0036
Geocenter to KBO 37.81048801 +/- 0.0050
# Hcoef: 7.13
The following table shows the complete astrometric record for 23PB5. 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 (23PB5) followed by the observatory code and reference code for the source of the astrometry.
2023 08 13.34839 20 28 48.875 -12 38 34.75 23.1r 23PB5 T09 C~8nlW 2023 08 13.48871 20 28 48.187 -12 38 38.57 23.0r 23PB5 T09 C~8nlW 2023 09 14.01750 20 26 37.950 -12 52 48.29 23.1r 23PB5 269 C~8nlW 2023 09 15.01885 20 26 34.858 -12 53 13.62 23.0r 23PB5 269 C~8nlW 2023 10 06.05752 20 25 49.660 -13 01 17.19 22.9r 23PB5 269 C~8nlW 2023 10 07.04406 20 25 48.558 -13 01 36.96 22.8r 23PB5 269 C~8nlW 2024 10 03.21771 20 32 10.847 -13 19 29.81 23PB5 G37 C~8nlW 2024 10 04.18112 20 32 09.432 -13 19 49.47 23PB5 G37 C~8nlW
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 -0.05
2 0.0004 -10.69 0.08 -1.27 -0.07
3 0.0867 -2064.65 -0.22 -366.96 0.05
4 0.0894 -2114.62 0.02 -380.70 0.09
5 0.1470 -2872.04 0.05 -692.00 -0.03
6 0.1497 -2892.41 0.08 -707.35 0.02
7 1.1413 2265.62 -0.03 -3100.42 -0.02
8 1.1440 2240.77 0.03 -3114.42 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.
23PB5 quality flag:1 Type: 5:3EE SCATEXTD SCATNEAR axisobj 42.188 42.484 42.081 ecceobj 0.102 0.096 0.120 incobj 26.274 26.303 26.250 qmin 34.643 37.422 32.421 qmax 50.374 48.109 52.778 amean 42.326 42.644 42.326 amin 41.959 42.313 41.853 amax 42.744 43.007 42.833 emean 0.121 0.104 0.137 emin 0.050 0.089 0.020 emax 0.180 0.119 0.233 imean 24.635 24.970 24.597 imin 23.619 24.547 22.651 imax 25.602 25.363 26.173 excite_mean 0.435 0.435 0.443 fracstop 1.000 1.000 1.000 cjmean 2.850 2.852 2.842 libcent 0 182.5 -180.0 -180.0 libamp 0 64.6 -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 171.8 186.3 187.1 kozaiamp 180.0 180.0 154.4