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: 23FA55
# Created Wed Jul 17 01:11:59 2024
# Orbit generated from Bernstein formalism
# Fitting 7 observations of 7
# Arc: 0.97y
# First observation: 2023/03/21
# Last observation: 2024/03/08
Preliminary a, adot, b, bdot, g, gdot:
-0.000010 0.026692 -0.000002 0.002884 0.025481 0.000000
# Chi-squared of fit: 3.13 DOF: 8 RMS: 0.12
# Min/Max residuals: -0.23 0.18
# Exact a, adot, b, bdot, g, gdot:
1.582693E-05 2.649402E-02 1.934121E-06 2.867744E-03 2.569645E-02 -2.817844E-03
# Covariance matrix:
7.4845E-13 5.8133E-12 -8.9775E-15 6.6974E-13 3.4231E-12 2.3607E-10
5.8133E-12 1.0903E-09 -3.5026E-12 1.0931E-10 3.4898E-10 3.7709E-08
-8.9775E-15 -3.5026E-12 3.5468E-13 -7.5547E-13 -1.0798E-12 -1.2066E-10
6.6974E-13 1.0931E-10 -7.5547E-13 1.2224E-11 3.5204E-11 3.7875E-09
3.4231E-12 3.4898E-10 -1.0798E-12 3.5204E-11 1.1736E-10 1.2164E-08
2.3607E-10 3.7709E-08 -1.2066E-10 3.7875E-09 1.2164E-08 1.3069E-06
# lat0 lon0 xBary yBary zBary JD0
2.218155 156.460992 -0.403293 0.035405 -0.919805 2460024.799871
# Heliocentric elements and errors
Epoch: 2460020.5000 = 2023/03/17
Mean Anomaly: 319.69853 +/- 8.523
Argument of Peri: 70.70358 +/- 12.938
Long of Asc Node: 137.71325 +/- 0.015
Inclination: 6.52471 +/- 0.005
Eccentricity: 0.13061060 +/- 0.0360
Semi-Major Axis: 43.83270328 +/- 0.4199
Time of Perihelion: 2471886.7706 +/- 2503.7
Perihelion: 38.10768742 +/- 1.6207
Aphelion: 49.55771915 +/- 1.6488
Period (y) 290.2055 +/- 4.17
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X -36.64715906 +/- 0.0150
Ecliptic Y 15.52824775 +/- 0.0066
Ecliptic Z 1.50630138 +/- 0.0006
Ecliptic XDOT -0.00084339 +/- 0.0001
Ecliptic YDOT -0.00270377 +/- 0.0000
Ecliptic ZDOT 0.00029367 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 39.82975884 +/- 0.0141
Geocenter to KBO 38.91588837 +/- 0.0164
# Hcoef: 7.46
The following table shows the complete astrometric record for 23FA55. 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 (23FA55) followed by the observatory code and reference code for the source of the astrometry.
2023 03 21.29907 10 36 11.920 +11 12 03.96 23.3r 23FA55 568 C~7xZo 2023 03 21.49670 10 36 11.020 +11 12 09.00 23.3r 23FA55 568 C~7xZo 2023 04 22.06157 10 34 20.780 +11 22 38.95 23.4r 23FA55 304 C~7xZo 2023 04 22.12990 10 34 20.600 +11 22 39.90 23.4r 23FA55 304 C~7xZo 2023 05 15.09172 10 33 48.380 +11 25 10.97 23.5r 23FA55 304 C~7xZo 2024 03 07.26482 10 43 12.875 +10 40 51.43 23.4r 23FA55 304 C~7xZo 2024 03 08.25769 10 43 08.159 +10 41 20.78 23.5r 23FA55 304 C~7xZo
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 0.10 0.00 -0.03
2 0.0005 -14.17 -0.11 -0.24 -0.23
3 0.0870 -1753.79 0.11 -16.90 0.16
4 0.0871 -1756.60 -0.06 -17.00 0.18
5 0.1500 -2252.69 -0.05 -51.99 -0.06
6 0.9636 6451.76 -0.14 585.49 -0.02
7 0.9663 6376.23 0.14 586.46 -0.01
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.
23FA55 quality flag:2 Type: CLASSICAL SCATNEAR CLASSICAL axisobj 44.094 44.779 44.033 ecceobj 0.132 0.218 0.128 incobj 6.520 6.506 6.522 qmin 37.729 34.599 37.894 qmax 50.785 55.764 50.515 amean 44.126 44.849 44.061 amin 43.773 44.399 43.694 amax 44.524 45.435 44.454 emean 0.124 0.195 0.120 emin 0.107 0.164 0.103 emax 0.142 0.229 0.137 imean 5.472 4.804 5.479 imin 4.564 3.623 4.584 imax 6.395 6.370 6.392 excite_mean 0.157 0.213 0.154 fracstop 1.000 1.000 1.000 cjmean 3.073 3.057 3.074 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 180.7 178.7 180.6 kozaiamp 180.0 180.0 180.0