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: 23PL5
# Created Wed May 21 01:11:39 2025
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting 16 observations of 16
# Arc: 9.18y
# First observation: 2014/08/03
# Last observation: 2023/10/07
# Chi-squared of fit: 6.20 DOF: 26 RMS: 0.11
# Min/Max residuals: -0.34 0.24
# Exact a, adot, b, bdot, g, gdot:
1.620182E-05 2.625073E-02 -1.790903E-06 -2.690137E-03 2.547608E-02 3.034761E-03
# Covariance matrix:
3.4551E-13 -1.1789E-13 -5.8092E-15 8.7411E-15 -3.7095E-14 -3.4076E-13
-1.1789E-13 1.5674E-13 1.0218E-14 -1.6031E-14 4.9826E-14 6.2390E-13
-5.8092E-15 1.0218E-14 3.0081E-13 -3.6639E-14 7.8506E-15 4.2199E-14
8.7411E-15 -1.6031E-14 -3.6639E-14 7.8399E-15 -4.8577E-15 -6.6424E-14
-3.7095E-14 4.9826E-14 7.8506E-15 -4.8577E-15 2.1353E-13 2.0067E-13
-3.4076E-13 6.2390E-13 4.2199E-14 -6.6424E-14 2.0067E-13 2.5847E-12
# lat0 lon0 xBary yBary zBary JD0
6.837430 -71.523415 -0.382945 0.112312 -0.935833 2456872.651495
# Heliocentric elements and errors
Epoch: 2456872.5000 = 2014/08/03
Mean Anomaly: 43.43594 +/- 0.012
Argument of Peri: 73.26654 +/- 0.018
Long of Asc Node: 157.30541 +/- 0.001
Inclination: 8.91415 +/- 0.000
Eccentricity: 0.16097792 +/- 0.0001
Semi-Major Axis: 44.76621184 +/- 0.0039
Time of Perihelion: 2443672.6001 +/- 4.2
Perihelion: 37.55984035 +/- 0.0046
Aphelion: 51.97258332 +/- 0.0056
Period (y) 299.5254 +/- 0.04
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X 13.01167670 +/- 0.0002
Ecliptic Y -37.73523419 +/- 0.0007
Ecliptic Z 4.67306522 +/- 0.0001
Ecliptic XDOT 0.00278423 +/- 0.0000
Ecliptic YDOT 0.00055014 +/- 0.0000
Ecliptic ZDOT -0.00024810 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 40.18809156 +/- 0.0006
Geocenter to KBO 39.25248377 +/- 0.0007
# Hcoef: 6.97
The following table shows the complete astrometric record for 23PL5. 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 (23PL5) followed by the observatory code and reference code for the source of the astrometry.
2014 08 03.150717 19 16 11.57 -15 23 18.3 23PL5 X11 C~8rAj 2014 08 17.222333 19 15 12.09 -15 26 46.1 23PL5 X11 C~8rAj 2014 08 24.129594 19 14 47.23 -15 28 30.4 23PL5 X11 C~8rAj 2014 09 01.175386 19 14 22.71 -15 30 30.8 23PL5 X11 C~8rAj 2016 05 18.399529 19 34 09.07 -15 05 56.3 23PL5 W84 C~8rAj 2019 06 03.204406 19 51 35.41 -14 50 42.1 23PL5 W84 C~8rAj 2019 10 10.035798 19 44 00.65 -15 19 32.2 23PL5 W84 C~8rAj 2023 05 14.323510 20 15 50.24 -14 21 48.5 23PL5 W84 C~8rAj 2023 06 15.312670 20 14 33.23 -14 23 31.3 23PL5 W84 C~8rAj 2023 06 16.348685 20 14 29.46 -14 23 40.3 23PL5 W84 C~8rAj 2023 08 13.33775 20 10 06.056 -14 38 24.00 23.1r 23PL5 T09 C~8nlW 2023 08 13.47621 20 10 05.416 -14 38 26.69 23.1r 23PL5 T09 C~8nlW 2023 09 14.00609 20 08 08.966 -14 47 56.59 23.3r 23PL5 269 C~8nlW 2023 09 15.01136 20 08 06.320 -14 48 12.96 23.2r 23PL5 269 C~8nlW 2023 10 06.02489 20 07 31.163 -14 53 08.65 23.0r 23PL5 269 C~8nlW 2023 10 07.01658 20 07 30.518 -14 53 19.97 23.0r 23PL5 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 0.02 0.00 0.03
2 0.0385 0.00 0.08 0.00 0.08
3 0.0574 0.00 -0.02 0.00 -0.06
4 0.0795 0.00 -0.06 0.00 -0.05
5 1.7912 0.00 0.07 0.00 -0.09
6 4.8325 0.00 -0.01 0.00 0.10
7 5.1852 0.00 -0.10 0.00 0.08
8 8.7780 0.00 -0.34 0.00 -0.13
9 8.8656 0.00 0.24 0.00 0.04
10 8.8684 0.00 0.03 0.00 -0.02
11 9.0272 0.00 0.13 0.00 -0.07
12 9.0276 0.00 0.05 0.00 -0.16
13 9.1139 0.00 0.12 0.00 0.08
14 9.1167 0.00 -0.04 0.00 0.10
15 9.1742 0.00 -0.19 0.00 0.01
16 9.1769 0.00 0.01 0.00 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.
23PL5 quality flag:3 Type: CLASSICAL CLASSICAL CLASSICAL axisobj 44.728 44.728 44.728 ecceobj 0.158 0.158 0.158 incobj 8.899 8.899 8.899 qmin 37.207 37.206 37.208 qmax 53.074 53.073 53.075 amean 44.958 44.958 44.959 amin 44.586 44.583 44.581 amax 45.381 45.391 45.393 emean 0.152 0.152 0.152 emin 0.135 0.135 0.135 emax 0.170 0.170 0.170 imean 8.322 8.324 8.320 imin 7.558 7.561 7.561 imax 9.136 9.136 9.134 excite_mean 0.210 0.210 0.210 fracstop 1.000 1.000 1.000 cjmean 3.060 3.060 3.060 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 185.0 185.0 184.9 kozaiamp 179.9 179.9 180.0