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: 23PE5
# Created Thu Aug 28 01:12:05 2025
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting 14 observations of 14
# Arc: 7.12y
# First observation: 2018/06/16
# Last observation: 2025/07/29
# Chi-squared of fit: 4.29 DOF: 22 RMS: 0.10
# Min/Max residuals: -0.19 0.18
# Exact a, adot, b, bdot, g, gdot:
2.085914E-05 4.741237E-02 3.507707E-06 7.205406E-03 3.613961E-02 2.485744E-03
# Covariance matrix:
4.8748E-13 -1.5883E-13 4.9530E-15 -1.3006E-14 -4.8960E-14 -2.7137E-13
-1.5883E-13 1.1019E-12 -4.0783E-14 1.4297E-13 1.8041E-12 2.8702E-12
4.9530E-15 -4.0783E-14 4.5940E-13 -8.0825E-14 -6.0771E-14 -1.1174E-13
-1.3006E-14 1.4297E-13 -8.0825E-14 3.5054E-14 2.2983E-13 3.8227E-13
-4.8960E-14 1.8041E-12 -6.0771E-14 2.2983E-13 3.3436E-12 4.5742E-12
-2.7137E-13 2.8702E-12 -1.1174E-13 3.8227E-13 4.5742E-12 7.6963E-12
# lat0 lon0 xBary yBary zBary JD0
3.148774 -72.986872 0.380098 0.051398 -0.933247 2458285.814951
# Heliocentric elements and errors
Epoch: 2458286.5000 = 2018/06/17
Mean Anomaly: 5.47254 +/- 0.009
Argument of Peri: 9.19159 +/- 0.017
Long of Asc Node: 267.02062 +/- 0.001
Inclination: 9.17722 +/- 0.000
Eccentricity: 0.28632153 +/- 0.0001
Semi-Major Axis: 39.94897926 +/- 0.0094
Time of Perihelion: 2456884.5161 +/- 2.4
Perihelion: 28.51072634 +/- 0.0084
Aphelion: 51.38723218 +/- 0.0131
Period (y) 252.5031 +/- 0.09
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X 7.99372948 +/- 0.0004
Ecliptic Y -27.43126907 +/- 0.0013
Ecliptic Z 1.52003942 +/- 0.0001
Ecliptic XDOT 0.00348793 +/- 0.0000
Ecliptic YDOT 0.00089601 +/- 0.0000
Ecliptic ZDOT 0.00055521 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 28.61264467 +/- 0.0013
Geocenter to KBO 27.67047731 +/- 0.0014
# Hcoef: 8.29
The following table shows the complete astrometric record for 23PE5. 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 (23PE5) followed by the observatory code and reference code for the source of the astrometry.
2018 06 16.31415 19 12 05.79 -19 13 56.3 22.9V 23PE5 W84 C~8nlW 2018 06 17.13121 19 12 00.59 -19 13 59.8 23PE5 W84 C~8nlW 2018 06 17.40950 19 11 58.79 -19 14 01.1 23PE5 W84 C~8nlW 2023 08 13.33054 20 00 04.817 -15 18 55.97 23.2r 23PE5 T09 C~8nlW 2023 08 13.46930 20 00 03.956 -15 18 58.50 23.3r 23PE5 T09 C~8nlW 2023 09 14.00241 19 57 32.386 -15 28 01.66 23.1r 23PE5 269 C~8nlW 2023 09 15.00890 19 57 29.203 -15 28 16.06 23.0r 23PE5 269 C~8nlW 2023 10 06.02087 19 56 52.231 -15 32 18.72 22.9r 23PE5 269 C~8nlW 2023 10 07.01258 19 56 51.943 -15 32 26.64 22.9r 23PE5 269 C~8nlW 2024 10 03.15244 20 07 03.363 -14 40 01.48 23PE5 G37 C~8nlW 2024 10 04.11711 20 07 02.474 -14 40 11.83 23PE5 G37 C~8nlW 2025 07 29.388671 20 22 10.164 -13 25 22.29 22.8w 23PE5 F52 C~91b8 2025 07 29.400265 20 22 10.101 -13 25 22.23 22.9w 23PE5 F52 C~91b8 2025 07 29.411902 20 22 10.001 -13 25 22.41 22.7w 23PE5 F52 C~91b8
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 -0.08
2 0.0022 0.00 -0.12 0.00 0.07
3 0.0030 0.00 0.09 0.00 0.04
4 5.1582 0.00 0.01 0.00 -0.00
5 5.1585 0.00 -0.02 0.00 0.02
6 5.2449 0.00 -0.02 0.00 -0.19
7 5.2476 0.00 0.05 0.00 0.13
8 5.3052 0.00 0.11 0.00 -0.07
9 5.3079 0.00 -0.03 0.00 -0.05
10 6.2994 0.00 0.04 0.00 0.01
11 6.3020 0.00 -0.08 0.00 -0.05
12 7.1186 0.00 -0.04 0.00 -0.16
13 7.1186 0.00 0.18 0.00 0.13
14 7.1187 0.00 -0.15 0.00 0.18
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.
23PE5 quality flag:3 Type: 3:2E 3:2E 3:2E axisobj 39.385 39.385 39.385 ecceobj 0.277 0.277 0.277 incobj 9.212 9.212 9.212 qmin 27.675 27.759 27.764 qmax 52.036 51.861 51.970 amean 39.455 39.455 39.455 amin 38.903 38.917 38.914 amax 40.099 40.109 40.107 emean 0.282 0.280 0.280 emin 0.266 0.265 0.262 emax 0.298 0.296 0.297 imean 10.745 10.923 10.830 imin 10.023 10.496 10.190 imax 11.356 11.422 11.353 excite_mean 0.338 0.338 0.337 fracstop 1.000 1.000 1.000 cjmean 2.921 2.921 2.921 libcent 0 179.9 180.1 179.6 libamp 0 125.1 123.6 124.5 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 162.0 166.9 159.4 kozaiamp 179.9 180.0 180.0