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: 23FP61 # Created Mon Jul 7 01:12:06 2025 # Orbit generated from Bernstein formalism # Fitting 4 observations of 4 # Arc: 31.84d # First observation: 2023/03/21 # Last observation: 2023/04/22 Preliminary a, adot, b, bdot, g, gdot: -0.000000 0.025836 -0.000000 0.000561 0.023313 0.000000 # WARNING Fitting with energy constraint # Chi-squared of fit: 0.39 DOF: 3 RMS: 0.06 # Min/Max residuals: -0.08 0.08 # Exact a, adot, b, bdot, g, gdot: 1.479557E-05 2.122333E-02 7.616601E-08 6.281604E-04 2.251387E-02 1.493451E-03 # Covariance matrix: 7.1780E-11 9.5599E-08 -6.0253E-13 -1.2951E-09 1.8536E-08 -6.0180E-07 9.5599E-08 1.2869E-04 -8.1141E-10 -1.7441E-06 2.4931E-05 -8.2253E-04 -6.0253E-13 -8.1141E-10 7.3232E-13 2.6295E-12 -1.5701E-10 5.3011E-09 -1.2951E-09 -1.7441E-06 2.6295E-12 2.3857E-08 -3.3744E-07 1.1433E-05 1.8536E-08 2.4931E-05 -1.5701E-10 -3.3744E-07 4.8389E-06 -1.5355E-04 -6.0180E-07 -8.2253E-04 5.3011E-09 1.1433E-05 -1.5355E-04 8.9324E-03 # lat0 lon0 xBary yBary zBary JD0 -0.984837 157.532834 -0.385705 -0.016170 -0.927843 2460024.781511 # Heliocentric elements and errors Epoch: 2460020.5000 = 2023/03/17 Mean Anomaly: 70.74819 +/- 218.118 Argument of Peri: 250.48527 +/- 318.970 Long of Asc Node: 187.44985 +/- 18.773 Inclination: 1.96274 +/- 1.140 Eccentricity: 0.08342196 +/- 4.3218 Semi-Major Axis: 46.31325055 +/- 21.1932 Time of Perihelion: 2437396.5116 +/- 184218.1 Perihelion: 42.44970846 +/- 201.0947 Aphelion: 50.17679263 +/- 201.4670 Period (y) 315.1854 +/- 216.35 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X -42.03594839 +/- 4.0097 Ecliptic Y 16.96985333 +/- 1.6585 Ecliptic Z -0.76342142 +/- 0.0746 Ecliptic XDOT -0.00115723 +/- 0.0103 Ecliptic YDOT -0.00230641 +/- 0.0052 Ecliptic ZDOT 0.00007323 +/- 0.0002 # Distances at JD0 (AU) Heliocenter to KBO 45.33850121 +/- 3.7691 Geocenter to KBO 44.41706845 +/- 4.3398 # Hcoef: 7.26
The following table shows the complete astrometric record for 23FP61. 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 (23FP61) followed by the observatory code and reference code for the source of the astrometry.
2023 03 21.28071 10 35 24.641 +07 49 45.05 23.7r 23FP61 T09 C~8vOI 2023 03 21.47603 10 35 23.860 +07 49 49.62 23.8r 23FP61 T09 C~8vOI 2023 04 22.04981 10 33 45.379 +08 00 13.23 23.8r 23FP61 269 C~8vOI 2023 04 22.11966 10 33 45.220 +08 00 14.38 23.8r 23FP61 269 C~8vOI
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 0.08
2 0.0005 -12.47 -0.02 -0.06 -0.08
3 0.0870 -1602.56 0.05 36.94 -0.06
4 0.0872 -1605.18 -0.05 37.13 0.06
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.
23FP61 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