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: 23FW54
# Created Wed Dec 25 02:11:19 2024
# Orbit generated from Bernstein formalism
# Fitting 8 observations of 8
# Arc: 0.97y
# First observation: 2023/03/21
# Last observation: 2024/03/08
Preliminary a, adot, b, bdot, g, gdot:
-0.000011 0.022321 0.000002 -0.000383 0.023107 0.000000
# Chi-squared of fit: 0.48 DOF: 10 RMS: 0.04
# Min/Max residuals: -0.07 0.08
# Exact a, adot, b, bdot, g, gdot:
1.504634E-05 2.213322E-02 -6.637969E-07 -3.804499E-04 2.330846E-02 -3.515421E-03
# Covariance matrix:
7.4256E-13 4.9942E-12 4.5422E-14 -1.2242E-13 3.1660E-12 2.4475E-10
4.9942E-12 7.1350E-10 3.2241E-12 -1.2370E-11 2.4532E-10 2.9257E-08
4.5422E-14 3.2241E-12 3.1345E-13 -4.2786E-13 1.1794E-12 1.3371E-10
-1.2242E-13 -1.2370E-11 -4.2786E-13 1.4360E-12 -4.3557E-12 -5.0985E-10
3.1660E-12 2.4532E-10 1.1794E-12 -4.3557E-12 8.8792E-11 1.0156E-08
2.4475E-10 2.9257E-08 1.3371E-10 -5.0985E-10 1.0156E-08 1.2032E-06
# lat0 lon0 xBary yBary zBary JD0
2.814735 157.341705 -0.389097 0.045280 -0.925469 2460024.799871
# Heliocentric elements and errors
Epoch: 2460020.5000 = 2023/03/17
Mean Anomaly: 286.25530 +/- 4.381
Argument of Peri: 201.05390 +/- 0.142
Long of Asc Node: 47.41827 +/- 0.069
Inclination: 2.94024 +/- 0.001
Eccentricity: 0.14801816 +/- 0.0496
Semi-Major Axis: 44.72840661 +/- 0.6735
Time of Perihelion: 2482402.6533 +/- 1229.8
Perihelion: 38.10779005 +/- 2.2923
Aphelion: 51.34902318 +/- 2.3501
Period (y) 299.1461 +/- 6.76
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X -40.54007264 +/- 0.0160
Ecliptic Y 16.50561984 +/- 0.0067
Ecliptic Z 2.10679587 +/- 0.0008
Ecliptic XDOT -0.00062487 +/- 0.0001
Ecliptic YDOT -0.00254848 +/- 0.0000
Ecliptic ZDOT -0.00006494 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 43.82204428 +/- 0.0150
Geocenter to KBO 42.90287154 +/- 0.0173
# Hcoef: 6.59
The following table shows the complete astrometric record for 23FW54. 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 (23FW54) followed by the observatory code and reference code for the source of the astrometry.
2023 03 21.29907 10 40 26.202 +11 25 34.63 23.0r 23FW54 568 C~7xZn 2023 03 21.49670 10 40 25.370 +11 25 38.97 23.0r 23FW54 568 C~7xZn 2023 04 22.05788 10 38 39.934 +11 34 33.83 23.0r 23FW54 304 C~7xZn 2023 04 22.12657 10 38 39.761 +11 34 34.55 23.0r 23FW54 304 C~7xZn 2023 05 15.08792 10 38 05.888 +11 36 21.82 22.9r 23FW54 304 C~7xZn 2023 05 15.96946 10 38 05.456 +11 36 20.66 23.0r 23FW54 304 C~7xZn 2024 03 07.26173 10 46 09.458 +10 50 12.88 22.8r 23FW54 304 C~7xZn 2024 03 08.25435 10 46 05.038 +10 50 38.64 22.9r 23FW54 304 C~7xZn
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 -0.01 0.00 0.08
2 0.0005 -12.97 -0.00 -0.56 -0.04
3 0.0870 -1650.37 0.04 -83.74 0.03
4 0.0871 -1653.00 -0.04 -84.02 0.02
5 0.1500 -2154.88 -0.03 -170.07 -0.06
6 0.1524 -2160.34 0.03 -173.51 -0.04
7 0.9636 5480.35 0.07 -62.09 -0.01
8 0.9663 5410.28 -0.07 -62.93 0.02
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.
23FW54 quality flag:2 Type: CLASSICAL SCATNEAR CLASSICAL axisobj 44.949 46.911 44.467 ecceobj 0.147 0.270 0.060 incobj 2.936 2.939 2.934 qmin 37.791 31.171 41.113 qmax 52.631 65.948 48.178 amean 45.017 45.776 44.520 amin 44.635 37.987 44.166 amax 45.438 49.118 44.888 emean 0.140 0.283 0.059 emin 0.123 0.144 0.043 emax 0.159 0.346 0.073 imean 1.917 4.246 2.090 imin 1.091 1.320 1.457 imax 2.646 7.639 2.556 excite_mean 0.144 0.293 0.069 fracstop 1.000 1.000 1.000 cjmean 3.088 3.015 3.102 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 186.7 181.9 182.1 kozaiamp 180.0 180.0 180.0