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: 23PM5 # Created Wed May 21 01:11:40 2025 # Orbit generated by ELGB # -->Covariance matrix from a Bernstein fit # Fitting 14 observations of 14 # Arc: 17.29y # First observation: 2006/06/23 # Last observation: 2023/10/07 # Chi-squared of fit: 4.45 DOF: 22 RMS: 0.10 # Min/Max residuals: -0.26 0.13 # Exact a, adot, b, bdot, g, gdot: 1.530476E-05 2.807725E-02 -4.659956E-06 -8.189796E-03 2.785476E-02 -4.670632E-04 # Covariance matrix: 7.2984E-13 -8.7255E-14 -1.1394E-14 1.3145E-14 -4.3797E-14 -8.4538E-14 -8.7255E-14 6.9422E-14 1.8079E-14 -2.0267E-14 1.4836E-14 1.2897E-13 -1.1394E-14 1.8079E-14 6.9613E-13 -4.7674E-14 3.2709E-16 3.5405E-14 1.3145E-14 -2.0267E-14 -4.7674E-14 9.1575E-15 -1.9262E-15 -3.9549E-14 -4.3797E-14 1.4836E-14 3.2709E-16 -1.9262E-15 1.4457E-13 1.5958E-14 -8.4538E-14 1.2897E-13 3.5405E-14 -3.9549E-14 1.5958E-14 2.5134E-13 # lat0 lon0 xBary yBary zBary JD0 15.300171 -86.696576 0.024238 0.267382 -0.977098 2453909.933169 # Heliocentric elements and errors Epoch: 2453910.5000 = 2006/06/24 Mean Anomaly: 339.69522 +/- 0.043 Argument of Peri: 158.27928 +/- 0.047 Long of Asc Node: 134.62442 +/- 0.000 Inclination: 21.90827 +/- 0.000 Eccentricity: 0.03555070 +/- 0.0000 Semi-Major Axis: 38.14730446 +/- 0.0022 Time of Perihelion: 2458764.3899 +/- 12.5 Perihelion: 36.79114128 +/- 0.0025 Aphelion: 39.50346765 +/- 0.0027 Period (y) 235.6156 +/- 0.02 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 2.02685381 +/- 0.0000 Ecliptic Y -35.58650440 +/- 0.0005 Ecliptic Z 9.47316084 +/- 0.0001 Ecliptic XDOT 0.00276902 +/- 0.0000 Ecliptic YDOT -0.00001411 +/- 0.0000 Ecliptic ZDOT -0.00078859 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 36.88155051 +/- 0.0005 Geocenter to KBO 35.90055410 +/- 0.0005 # Hcoef: 7.57
The following table shows the complete astrometric record for 23PM5. 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 (23PM5) followed by the observatory code and reference code for the source of the astrometry.
2006 06 23.432415 18 12 52.41 -08 06 08.0 23PM5 T14 C~8rAj 2006 06 25.407193 18 12 41.59 -08 06 20.1 23PM5 T14 C~8rAj 2019 06 03.226992 19 41 09.36 -12 58 18.0 23PM5 W84 C~8rAj 2019 06 08.335515 19 40 49.14 -12 58 52.4 23PM5 W84 C~8rAj 2022 05 28.578315 20 01 50.37 -13 50 14.5 23PM5 T09 C~8rAj 2022 05 28.580757 20 01 50.35 -13 50 14.5 23PM5 T09 C~8rAj 2023 05 16.342820 20 09 05.49 -14 05 23.7 23PM5 W84 C~8rAj 2023 05 16.347377 20 09 05.48 -14 05 23.5 23PM5 W84 C~8rAj 2023 08 13.33425 20 02 36.478 -14 29 10.92 23.3r 23PM5 T09 C~8nlW 2023 08 13.47273 20 02 35.779 -14 29 14.29 23.2r 23PM5 T09 C~8nlW 2023 09 14.02541 20 00 28.998 -14 41 53.28 23.4r 23PM5 269 C~8nlW 2023 09 15.02381 20 00 26.240 -14 42 15.34 23.3r 23PM5 269 C~8nlW 2023 10 06.04741 19 59 51.241 -14 49 10.44 23.1r 23PM5 269 C~8nlW 2023 10 07.03688 19 59 50.744 -14 49 27.11 23.0r 23PM5 269 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 0.13 0.00 0.01
2 0.0054 0.00 -0.12 0.00 0.05
3 12.9440 0.00 -0.05 0.00 0.13
4 12.9580 0.00 -0.05 0.00 -0.26
5 15.9292 0.00 0.13 0.00 -0.18
6 15.9292 0.00 -0.06 0.00 -0.16
7 16.8950 0.00 0.05 0.00 -0.07
8 16.8950 0.00 0.01 0.00 0.13
9 17.1387 0.00 -0.07 0.00 0.04
10 17.1391 0.00 -0.01 0.00 0.09
11 17.2254 0.00 0.01 0.00 0.02
12 17.2282 0.00 -0.05 0.00 0.10
13 17.2857 0.00 -0.03 0.00 0.01
14 17.2884 0.00 0.06 0.00 0.08
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.
23PM5 quality flag:3 Type: SCATEXTD SCATEXTD SCATEXTD axisobj 37.837 37.837 37.837 ecceobj 0.031 0.031 0.031 incobj 21.901 21.901 21.901 qmin 36.086 36.086 36.086 qmax 40.109 40.154 40.109 amean 38.028 38.029 38.028 amin 37.745 37.742 37.741 amax 38.309 38.315 38.316 emean 0.033 0.033 0.033 emin 0.021 0.021 0.021 emax 0.048 0.048 0.048 imean 20.587 20.587 20.587 imin 19.423 19.423 19.426 imax 22.125 22.122 22.122 excite_mean 0.353 0.353 0.353 fracstop 1.000 1.000 1.000 cjmean 2.896 2.896 2.896 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 184.2 184.6 184.3 kozaiamp 180.0 180.0 180.0