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: 23PC5
# 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:
-0.000018 0.043143 0.000002 -0.006007 0.033028 0.000000
# Chi-squared of fit: 2.96 DOF: 10 RMS: 0.11
# Min/Max residuals: -0.25 0.20
# Exact a, adot, b, bdot, g, gdot:
1.983704E-05 4.379489E-02 -2.944641E-06 -6.084384E-03 3.362326E-02 -6.806074E-03
# Covariance matrix:
7.2873E-13 3.8288E-12 6.1927E-14 -7.6027E-13 2.6871E-12 1.0086E-10
3.8288E-12 6.5252E-10 9.6334E-12 -1.3410E-10 2.1834E-10 1.7730E-08
6.1927E-14 9.6334E-12 4.3292E-13 -2.2818E-12 3.2307E-12 2.6208E-10
-7.6027E-13 -1.3410E-10 -2.2818E-12 2.8490E-11 -4.4650E-11 -3.6511E-09
2.6871E-12 2.1834E-10 3.2307E-12 -4.4650E-11 7.7285E-11 5.9045E-09
1.0086E-10 1.7730E-08 2.6208E-10 -3.6511E-09 5.9045E-09 4.8273E-07
# lat0 lon0 xBary yBary zBary JD0
0.969187 -63.158344 -0.389831 0.015452 -0.929394 2460169.803231
# Heliocentric elements and errors
Epoch: 2460160.5000 = 2023/08/04
Mean Anomaly: 348.30528 +/- 0.984
Argument of Peri: 202.12805 +/- 2.667
Long of Asc Node: 124.32070 +/- 0.003
Inclination: 7.96223 +/- 0.004
Eccentricity: 0.39925162 +/- 0.0103
Semi-Major Axis: 49.24446322 +/- 0.4914
Time of Perihelion: 2464260.8574 +/- 339.5
Perihelion: 29.58353167 +/- 0.5850
Aphelion: 68.90539476 +/- 0.8531
Period (y) 345.5766 +/- 5.17
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X 14.20368896 +/- 0.0035
Ecliptic Y -27.18438891 +/- 0.0069
Ecliptic Z 0.50303427 +/- 0.0001
Ecliptic XDOT 0.00293207 +/- 0.0000
Ecliptic YDOT 0.00210529 +/- 0.0001
Ecliptic ZDOT -0.00050473 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 30.67554114 +/- 0.0064
Geocenter to KBO 29.74131922 +/- 0.0078
# Hcoef: 8.15
The following table shows the complete astrometric record for 23PC5. 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 (23PC5) followed by the observatory code and reference code for the source of the astrometry.
2023 08 13.30243 19 54 43.578 -19 50 14.21 23.2r 23PC5 T09 C~8nlW 2023 08 13.44080 19 54 42.754 -19 50 17.29 23.1r 23PC5 T09 C~8nlW 2023 09 13.99424 19 52 22.084 -19 59 07.77 23.0r 23PC5 269 C~8nlW 2023 09 15.00410 19 52 19.211 -19 59 20.46 22.9r 23PC5 269 C~8nlW 2023 10 06.01215 19 51 48.564 -20 02 31.30 23.0r 23PC5 269 C~8nlW 2023 10 07.00396 19 51 48.550 -20 02 36.51 22.9r 23PC5 269 C~8nlW 2024 10 03.14429 20 02 24.428 -19 53 47.42 23PC5 G37 C~8nlW 2024 10 04.10934 20 02 23.818 -19 53 53.87 23PC5 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 0.16 0.00 0.02
2 0.0004 -12.00 -0.12 -0.80 -0.25
3 0.0868 -2060.51 -0.02 -146.33 0.07
4 0.0895 -2102.68 -0.10 -151.21 0.20
5 0.1470 -2562.75 0.04 -257.89 -0.02
6 0.1498 -2563.91 0.05 -262.98 -0.01
7 1.1413 6334.72 0.01 -1487.19 0.09
8 1.1439 6324.98 -0.01 -1491.77 -0.11
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.
23PC5 quality flag:3 Type: CENTAURR CENTAURR CENTAURR axisobj 48.775 49.836 48.149 ecceobj 0.396 0.403 0.397 incobj 7.966 7.979 7.954 qmin 29.237 29.478 28.430 qmax 68.541 73.283 69.145 amean 48.884 50.104 47.804 amin 48.700 48.781 46.689 amax 49.120 51.642 49.304 emean 0.396 0.404 0.392 emin 0.393 0.386 0.375 emax 0.400 0.419 0.409 imean 6.474 6.253 5.860 imin 6.469 5.935 5.359 imax 6.482 6.500 6.529 excite_mean 0.412 0.418 0.405 fracstop 0.000 0.006 0.110 cjmean 2.942 2.948 2.936 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 202.1 201.2 187.5 kozaiamp 0.6 8.5 179.8