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: 23FU54
# Created Tue Jan 21 02:11:39 2025
# 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:
-0.000012 0.015213 0.000020 -0.010065 0.022424 0.000000
# Chi-squared of fit: 4.01 DOF: 10 RMS: 0.13
# Min/Max residuals: -0.28 0.28
# Exact a, adot, b, bdot, g, gdot:
1.036366E-05 1.492945E-02 -6.969220E-06 -9.933453E-03 2.259701E-02 -1.059133E-02
# Covariance matrix:
6.9907E-13 5.5076E-14 6.9918E-14 -6.1356E-13 1.4938E-12 5.7033E-11
5.5076E-14 1.4345E-10 5.9758E-12 -8.1922E-11 5.2856E-11 7.9721E-09
6.9918E-14 5.9758E-12 5.5515E-13 -3.8588E-12 2.3943E-12 3.3924E-10
-6.1356E-13 -8.1922E-11 -3.8588E-12 4.8728E-11 -3.1673E-11 -4.6219E-09
1.4938E-12 5.2856E-11 2.3943E-12 -3.1673E-11 2.4098E-11 3.0732E-09
5.7033E-11 7.9721E-09 3.3924E-10 -4.6219E-09 3.0732E-09 4.4955E-07
# lat0 lon0 xBary yBary zBary JD0
4.179892 157.011252 -0.394494 0.067149 -0.921851 2460024.803501
# Heliocentric elements and errors
Epoch: 2460020.5000 = 2023/03/17
Mean Anomaly: 294.80168 +/- 5.758
Argument of Peri: 296.07334 +/- 1.680
Long of Asc Node: 343.62640 +/- 0.001
Inclination: 33.88890 +/- 0.006
Eccentricity: 0.50198488 +/- 0.0227
Semi-Major Axis: 43.68559181 +/- 1.3263
Time of Perihelion: 2479120.7761 +/- 1445.2
Perihelion: 21.75608546 +/- 1.1919
Aphelion: 65.61509816 +/- 2.2255
Period (y) 288.7457 +/- 13.15
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X -41.62694002 +/- 0.0088
Ecliptic Y 17.23531808 +/- 0.0038
Ecliptic Z 3.22526819 +/- 0.0007
Ecliptic XDOT 0.00038907 +/- 0.0001
Ecliptic YDOT -0.00212206 +/- 0.0000
Ecliptic ZDOT -0.00129389 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 45.16924484 +/- 0.0083
Geocenter to KBO 44.25364010 +/- 0.0096
# Hcoef: 6.16
The following table shows the complete astrometric record for 23FU54. 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 (23FU54) followed by the observatory code and reference code for the source of the astrometry.
2023 03 21.30270 10 41 16.814 +12 48 55.82 22.7r 23FU54 568 C~7xZn 2023 03 21.50089 10 41 15.929 +12 48 59.33 22.8r 23FU54 568 C~7xZn 2023 04 22.06545 10 39 21.074 +12 55 08.28 22.8r 23FU54 304 C~7xZn 2023 04 22.13343 10 39 20.873 +12 55 08.84 22.8r 23FU54 304 C~7xZn 2023 05 15.09913 10 38 39.044 +12 54 53.06 22.5r 23FU54 304 C~7xZn 2023 05 16.08071 10 38 38.202 +12 54 46.58 22.6r 23FU54 304 C~7xZn 2024 03 07.27091 10 44 40.945 +11 53 04.19 22.5r 23FU54 304 C~7xZn 2024 03 08.26462 10 44 36.229 +11 53 24.81 22.5r 23FU54 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 0.02 0.00 0.00
2 0.0005 -13.31 0.01 -1.61 0.04
3 0.0870 -1708.81 0.09 -288.81 -0.16
4 0.0871 -1711.74 -0.17 -289.39 -0.02
5 0.1500 -2273.21 -0.04 -532.46 0.04
6 0.1527 -2282.21 0.09 -543.07 0.12
7 0.9636 4034.64 0.04 -1976.87 0.28
8 0.9664 3962.73 -0.04 -1983.97 -0.28
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.
23FU54 quality flag:1 Type: CENTAURR CENTAURR CENTAURR axisobj 43.800 47.793 40.941 ecceobj 0.501 0.563 0.440 incobj 33.859 33.847 33.871 qmin 19.152 18.355 20.332 qmax 69.419 79.964 69.964 amean 43.632 48.131 41.583 amin 42.882 46.683 40.789 amax 44.664 49.483 45.243 emean 0.541 0.594 0.488 emin 0.498 0.562 0.439 emax 0.564 0.622 0.546 imean 32.155 32.579 32.670 imin 31.035 31.133 31.322 imax 34.765 34.798 34.777 excite_mean 0.759 0.802 0.728 fracstop 0.117 0.075 0.080 cjmean 2.393 2.328 2.438 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 267.7 310.7 323.8 kozaiamp 180.0 21.5 28.2