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: 23FD55
# Created Wed Dec 25 02:11:20 2024
# Orbit generated from Bernstein formalism
# Fitting 6 observations of 6
# Arc: 0.97y
# First observation: 2023/03/21
# Last observation: 2024/03/08
Preliminary a, adot, b, bdot, g, gdot:
0.000000 0.016238 0.000001 -0.000946 0.019231 0.000000
# Chi-squared of fit: 0.65 DOF: 6 RMS: 0.06
# Min/Max residuals: -0.07 0.08
# Exact a, adot, b, bdot, g, gdot:
1.360109E-05 1.619091E-02 -5.536170E-07 -9.434917E-04 1.925735E-02 -3.823046E-03
# Covariance matrix:
7.4339E-13 7.1861E-12 4.9460E-14 -5.2022E-13 3.1259E-12 4.4104E-10
7.1861E-12 8.2719E-09 4.4139E-11 -5.3686E-10 2.5123E-09 4.5112E-07
4.9460E-14 4.4139E-11 6.6937E-13 -3.3726E-12 1.3429E-11 2.4082E-09
-5.2022E-13 -5.3686E-10 -3.3726E-12 3.6211E-11 -1.6313E-10 -2.9285E-08
3.1259E-12 2.5123E-09 1.3429E-11 -1.6313E-10 7.6519E-10 1.3709E-07
4.4104E-10 4.5112E-07 2.4082E-09 -2.9285E-08 1.3709E-07 2.4608E-05
# lat0 lon0 xBary yBary zBary JD0
8.962718 -162.457683 0.298936 0.149256 -0.947838 2460024.917531
# Heliocentric elements and errors
Epoch: 2460020.5000 = 2023/03/17
Mean Anomaly: 282.41892 +/- 35.202
Argument of Peri: 215.30534 +/- 15.181
Long of Asc Node: 86.35150 +/- 0.305
Inclination: 9.40913 +/- 0.019
Eccentricity: 0.23591011 +/- 0.2813
Semi-Major Axis: 52.63358759 +/- 6.9288
Time of Perihelion: 2490077.5404 +/- 12279.0
Perihelion: 40.21679214 +/- 15.7263
Aphelion: 65.05038304 +/- 17.1061
Period (y) 381.8587 +/- 75.40
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X -49.90457704 +/- 0.0703
Ecliptic Y -15.46482582 +/- 0.0222
Ecliptic Z 8.08998043 +/- 0.0116
Ecliptic XDOT 0.00118390 +/- 0.0007
Ecliptic YDOT -0.00203061 +/- 0.0002
Ecliptic ZDOT -0.00021720 +/- 0.0001
# Distances at JD0 (AU)
Heliocenter to KBO 52.86847294 +/- 0.0667
Geocenter to KBO 51.92823415 +/- 0.0746
# Hcoef: 7.71
The following table shows the complete astrometric record for 23FD55. 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 (23FD55) followed by the observatory code and reference code for the source of the astrometry.
2023 03 21.41673 13 18 20.808 +01 24 15.23 24.9r 23FD55 568 C~7xZo 2023 03 21.61396 13 18 20.138 +01 24 20.01 24.9r 23FD55 568 C~7xZo 2023 05 15.19315 13 15 09.853 +01 41 46.53 24.9r 23FD55 304 C~7xZo 2023 05 16.05756 13 15 07.322 +01 41 56.00 24.8r 23FD55 304 C~7xZo 2024 03 07.30406 13 22 24.038 +00 54 50.67 24.9r 23FD55 304 C~7xZo 2024 03 08.31225 13 22 21.090 +00 55 14.12 24.8r 23FD55 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 -0.06 0.00 -0.05
2 0.0005 -11.11 0.06 0.61 0.08
3 0.1500 -3048.30 -0.04 -113.06 -0.07
4 0.1523 -3087.02 0.04 -118.68 0.03
5 0.9634 4045.00 0.07 -247.99 0.05
6 0.9662 3995.18 -0.07 -243.08 -0.04
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.
23FD55 quality flag:0 Type: ERR2LARGE ERR2LARGE ERR2LARGE axisobj 0.000 0.000 0.000 ecceobj -1.000 -1.000 -1.000 incobj -1.000 -1.000 -1.000 qmin 0.000 0.000 0.000 qmax 0.000 0.000 0.000 amean 0.000 0.000 0.000 amin 0.000 0.000 0.000 amax 0.000 0.000 0.000 emean 0.000 0.000 0.000 emin 0.000 0.000 0.000 emax 0.000 0.000 0.000 imean 0.000 0.000 0.000 imin 0.000 0.000 0.000 imax 0.000 0.000 0.000 excite_mean 0.000 0.000 0.000 fracstop 0.000 0.000 0.000 cjmean 0.000 0.000 0.000 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 0.0 0.0 0.0 kozaiamp 0.0 0.0 0.0