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: 23FN57 # Created Wed Jul 17 01:11:59 2024 # Orbit generated from Bernstein formalism # Fitting 8 observations of 8 # Arc: 1.12y # First observation: 2023/03/21 # Last observation: 2024/05/04 Preliminary a, adot, b, bdot, g, gdot: 0.000019 0.025691 -0.000002 -0.000860 0.025102 0.000000 # Chi-squared of fit: 4.92 DOF: 10 RMS: 0.14 # Min/Max residuals: -0.28 0.23 # Exact a, adot, b, bdot, g, gdot: 1.561017E-05 2.592476E-02 -1.087879E-06 -8.677573E-04 2.533400E-02 -8.786843E-04 # Covariance matrix: 7.3621E-13 2.1953E-12 -1.9508E-14 -7.4918E-14 2.2246E-12 1.1524E-10 2.1953E-12 7.9346E-11 -2.2371E-13 -2.2011E-12 3.7548E-11 3.8489E-09 -1.9508E-14 -2.2371E-13 4.1563E-13 -3.9107E-13 -1.5746E-13 -1.0350E-11 -7.4918E-14 -2.2011E-12 -3.9107E-13 7.5408E-13 -1.0606E-12 -1.0760E-10 2.2246E-12 3.7548E-11 -1.5746E-13 -1.0606E-12 2.2045E-11 1.7888E-09 1.1524E-10 3.8489E-09 -1.0350E-11 -1.0760E-10 1.7888E-09 1.8892E-07 # lat0 lon0 xBary yBary zBary JD0 -3.050767 157.442504 -0.387101 -0.049577 -0.926074 2460024.777431 # Heliocentric elements and errors Epoch: 2460020.5000 = 2023/03/17 Mean Anomaly: 342.92812 +/- 11.515 Argument of Peri: 257.40680 +/- 13.460 Long of Asc Node: 280.32645 +/- 0.032 Inclination: 3.52728 +/- 0.001 Eccentricity: 0.07183770 +/- 0.0062 Semi-Major Axis: 43.34820570 +/- 0.0529 Time of Perihelion: 2464963.9938 +/- 3334.4 Perihelion: 40.23417015 +/- 0.2720 Aphelion: 46.46224125 +/- 0.2734 Period (y) 285.4072 +/- 0.52 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X -37.39736744 +/- 0.0067 Ecliptic Y 15.11896706 +/- 0.0028 Ecliptic Z -2.10080083 +/- 0.0004 Ecliptic XDOT -0.00098449 +/- 0.0000 Ecliptic YDOT -0.00261693 +/- 0.0000 Ecliptic ZDOT -0.00008862 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 40.39256888 +/- 0.0063 Geocenter to KBO 39.47264392 +/- 0.0073 # Hcoef: 7.31
The following table shows the complete astrometric record for 23FN57. 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 (23FN57) followed by the observatory code and reference code for the source of the astrometry.
2023 03 21.27663 10 31 59.495 +05 56 36.26 23.1r 23FN57 T09 C~83ID 2023 03 21.47104 10 31 58.634 +05 56 41.49 23.2r 23FN57 T09 C~83ID 2023 04 22.10746 10 30 11.309 +06 08 37.23 23.2r 23FN57 304 C~83ID 2023 05 16.02186 10 29 40.553 +06 13 13.89 23.1r 23FN57 304 C~83ID 2024 04 12.02152 10 36 02.516 +05 30 09.93 23.7r 23FN57 304 C~83ID 2024 04 12.13206 10 36 02.178 +05 30 12.44 23.8r 23FN57 304 C~83ID 2024 05 04.00920 10 35 12.754 +05 36 26.49 23.4r 23FN57 304 C~83ID 2024 05 04.07269 10 35 12.682 +05 36 27.26 23.3r 23FN57 304 C~83ID
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 0.12 0.00 0.11
2 0.0005 -13.87 -0.07 0.12 0.07
3 0.0871 -1765.96 -0.28 74.71 -0.23
4 0.1526 -2294.34 0.23 162.92 0.04
5 1.0616 3957.17 -0.03 -131.05 -0.14
6 1.0619 3951.55 0.11 -130.59 0.05
7 1.1218 3127.34 -0.18 -56.80 -0.00
8 1.1220 3126.05 0.09 -56.48 0.10
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.
23FN57 quality flag:3 Type: CLASSICAL CLASSICAL CLASSICAL axisobj 43.615 43.922 43.468 ecceobj 0.075 0.085 0.086 incobj 3.520 3.523 3.518 qmin 39.015 39.253 38.791 qmax 48.556 48.861 48.469 amean 43.638 43.925 43.509 amin 43.286 43.570 43.159 amax 44.009 44.300 43.886 emean 0.079 0.087 0.085 emin 0.057 0.070 0.067 emax 0.104 0.103 0.105 imean 5.408 5.184 5.430 imin 4.514 4.399 4.544 imax 6.309 5.948 6.257 excite_mean 0.123 0.126 0.128 fracstop 1.000 1.000 1.000 cjmean 3.079 3.082 3.076 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 181.2 182.9 176.8 kozaiamp 179.9 180.0 180.0