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: 23FT54
# Created Wed Jul 17 01:11:59 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:
-0.000016 0.034584 0.000013 -0.006123 0.029288 0.000000
# Chi-squared of fit: 2.24 DOF: 10 RMS: 0.09
# Min/Max residuals: -0.15 0.18
# Exact a, adot, b, bdot, g, gdot:
1.821632E-05 3.429105E-02 -3.064584E-06 -6.082765E-03 2.959252E-02 -3.234183E-03
# Covariance matrix:
7.2403E-13 3.2724E-12 7.5035E-14 -7.4505E-13 2.5160E-12 1.1584E-10
3.2724E-12 6.1654E-10 8.5902E-12 -1.0572E-10 2.0004E-10 1.6800E-08
7.5035E-14 8.5902E-12 4.2041E-13 -1.8546E-12 2.8724E-12 2.3551E-10
-7.4505E-13 -1.0572E-10 -1.8546E-12 1.9419E-11 -3.4762E-11 -2.8913E-09
2.5160E-12 2.0004E-10 2.8724E-12 -3.4762E-11 6.9425E-11 5.5154E-09
1.1584E-10 1.6800E-08 2.3551E-10 -2.8913E-09 5.5154E-09 4.5933E-07
# lat0 lon0 xBary yBary zBary JD0
2.380251 156.365535 -0.404826 0.037980 -0.919028 2460024.799871
# Heliocentric elements and errors
Epoch: 2460020.5000 = 2023/03/17
Mean Anomaly: 345.21014 +/- 3.065
Argument of Peri: 191.30904 +/- 5.277
Long of Asc Node: 349.80808 +/- 0.002
Inclination: 10.36765 +/- 0.002
Eccentricity: 0.23555191 +/- 0.0096
Semi-Major Axis: 44.63331877 +/- 0.2178
Time of Perihelion: 2464495.0424 +/- 926.6
Perihelion: 34.11985523 +/- 0.4582
Aphelion: 55.14678230 +/- 0.5046
Period (y) 298.1927 +/- 2.18
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X -31.92743794 +/- 0.0087
Ecliptic Y 13.53358971 +/- 0.0038
Ecliptic Z 1.40334286 +/- 0.0004
Ecliptic XDOT -0.00102131 +/- 0.0001
Ecliptic YDOT -0.00300822 +/- 0.0000
Ecliptic ZDOT -0.00057473 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 34.70574470 +/- 0.0081
Geocenter to KBO 33.79232454 +/- 0.0095
# Hcoef: 7.57
The following table shows the complete astrometric record for 23FT54. 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 (23FT54) followed by the observatory code and reference code for the source of the astrometry.
2023 03 21.29907 10 36 04.997 +11 23 13.33 22.9r 23FT54 568 C~7xZn 2023 03 21.49670 10 36 03.978 +11 23 18.02 23.0r 23FT54 568 C~7xZn 2023 04 22.06157 10 33 57.168 +11 32 16.74 22.9r 23FT54 304 C~7xZn 2023 04 22.12990 10 33 56.988 +11 32 17.48 23.0r 23FT54 304 C~7xZn 2023 05 15.09540 10 33 20.228 +11 32 56.29 22.9r 23FT54 304 C~7xZn 2023 05 16.07711 10 33 19.890 +11 32 50.59 22.9r 23FT54 304 C~7xZn 2024 03 07.26793 10 44 09.568 +10 13 33.77 22.9r 23FT54 304 C~7xZn 2024 03 08.26127 10 44 04.096 +10 14 01.98 23.0r 23FT54 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 -0.04
2 0.0005 -15.65 0.01 -1.22 -0.13
3 0.0870 -1946.77 -0.12 -192.29 -0.03
4 0.0871 -1949.50 0.02 -192.58 0.18
5 0.1500 -2465.87 -0.02 -356.30 -0.00
6 0.1527 -2468.38 0.10 -363.43 0.04
7 0.9636 8190.04 0.10 -1199.19 0.13
8 0.9664 8104.46 -0.10 -1203.58 -0.15
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.
23FT54 quality flag:3 Type: SCATNEAR SCATNEAR SCATNEAR axisobj 44.969 45.771 44.541 ecceobj 0.239 0.249 0.244 incobj 10.352 10.354 10.351 qmin 33.037 33.821 32.968 qmax 57.365 58.324 56.915 amean 45.089 45.784 44.230 amin 44.385 45.355 43.548 amax 45.701 46.327 45.143 emean 0.241 0.249 0.219 emin 0.227 0.237 0.191 emax 0.261 0.259 0.261 imean 10.345 10.962 6.688 imin 9.003 10.236 2.662 imax 11.545 11.660 11.557 excite_mean 0.301 0.313 0.252 fracstop 1.000 1.000 1.000 cjmean 3.004 3.002 3.026 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 184.4 176.2 182.2 kozaiamp 179.9 180.0 180.0