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: 23PA5
# 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:
-0.000021 0.033675 -0.000001 -0.001900 0.030364 0.000000
# Chi-squared of fit: 1.15 DOF: 10 RMS: 0.07
# Min/Max residuals: -0.13 0.17
# Exact a, adot, b, bdot, g, gdot:
1.752694E-05 3.415271E-02 -7.981623E-07 -1.925147E-03 3.083224E-02 -2.417459E-03
# Covariance matrix:
7.1449E-13 3.2096E-12 8.5021E-14 -4.8837E-13 2.2992E-12 1.3528E-10
3.2096E-12 4.4436E-10 7.5609E-12 -7.5085E-11 1.5688E-10 1.9321E-08
8.5021E-14 7.5609E-12 4.1971E-13 -1.5719E-12 2.7417E-12 3.2828E-10
-4.8837E-13 -7.5085E-11 -1.5719E-12 1.3614E-11 -2.6280E-11 -3.2758E-09
2.2992E-12 1.5688E-10 2.7417E-12 -2.6280E-11 5.8312E-11 6.7878E-09
1.3528E-10 1.9321E-08 3.2828E-10 -3.2758E-09 6.7878E-09 8.4250E-07
# lat0 lon0 xBary yBary zBary JD0
6.352591 -53.585372 -0.230587 0.108301 -0.975228 2460169.849191
# Heliocentric elements and errors
Epoch: 2460160.5000 = 2023/08/04
Mean Anomaly: 310.30537 +/- 7.862
Argument of Peri: 175.07509 +/- 10.663
Long of Asc Node: 188.87129 +/- 0.012
Inclination: 6.97258 +/- 0.001
Eccentricity: 0.08199019 +/- 0.0235
Semi-Major Axis: 35.12978616 +/- 0.1400
Time of Perihelion: 2470658.7919 +/- 1659.7
Perihelion: 32.24948826 +/- 0.8354
Aphelion: 38.01008406 +/- 0.8392
Period (y) 208.2195 +/- 1.24
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X 19.91220301 +/- 0.0047
Ecliptic Y -26.59099548 +/- 0.0064
Ecliptic Z 3.58869497 +/- 0.0009
Ecliptic XDOT 0.00232173 +/- 0.0000
Ecliptic YDOT 0.00196491 +/- 0.0001
Ecliptic ZDOT -0.00019364 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 33.41340451 +/- 0.0058
Geocenter to KBO 32.43357904 +/- 0.0080
# Hcoef: 7.81
The following table shows the complete astrometric record for 23PA5. 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 (23PA5) followed by the observatory code and reference code for the source of the astrometry.
2023 08 13.34839 20 28 43.345 -12 30 39.44 23.1r 23PA5 T09 C~8nlW 2023 08 13.48871 20 28 42.550 -12 30 42.95 23.1r 23PA5 T09 C~8nlW 2023 09 14.01378 20 26 13.387 -12 43 28.01 23.0r 23PA5 269 C~8nlW 2023 09 15.01638 20 26 09.852 -12 43 50.43 23.1r 23PA5 269 C~8nlW 2023 10 06.05196 20 25 19.103 -12 50 47.12 22.9r 23PA5 269 C~8nlW 2023 10 07.04047 20 25 17.897 -12 51 03.48 22.9r 23PA5 269 C~8nlW 2024 10 03.22326 20 33 08.414 -12 28 29.07 23PA5 G37 C~8nlW 2024 10 04.18672 20 33 06.821 -12 28 46.56 23PA5 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 -0.00 0.00 -0.04
2 0.0004 -12.15 0.04 -0.59 -0.13
3 0.0867 -2315.61 -0.09 -217.59 0.00
4 0.0894 -2371.20 -0.01 -226.96 0.17
5 0.1470 -3191.81 0.09 -454.10 0.01
6 0.1497 -3212.84 -0.03 -465.77 0.00
7 1.1413 3796.91 -0.04 -820.45 0.04
8 1.1440 3769.98 0.04 -831.66 -0.06
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.
23PA5 quality flag:2 Type: 5:4E CENTAURR CENTAURR axisobj 34.905 35.644 34.526 ecceobj 0.081 0.080 0.129 incobj 6.987 6.987 6.987 qmin 31.713 30.169 29.611 qmax 38.424 83.724 47.575 amean 34.947 46.412 35.322 amin 34.590 32.097 31.757 amax 35.323 58.034 38.959 emean 0.068 0.295 0.141 emin 0.046 0.015 0.063 emax 0.090 0.443 0.222 imean 6.025 4.106 5.962 imin 4.782 0.683 4.931 imax 7.111 7.549 6.930 excite_mean 0.125 0.311 0.179 fracstop 1.000 0.911 0.019 cjmean 3.000 3.002 2.984 libcent 0 180.2 -180.0 -180.0 libamp 0 95.0 -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 179.9 174.9 203.2 kozaiamp 180.0 179.9 178.5