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: 23FH57
# Created Wed Dec 25 02:11:20 2024
# Orbit generated from Bernstein formalism
# Fitting 9 observations of 9
# Arc: 1.12y
# First observation: 2023/03/21
# Last observation: 2024/05/04
Preliminary a, adot, b, bdot, g, gdot:
0.000018 0.021047 0.000011 -0.004798 0.023070 0.000000
# Chi-squared of fit: 2.60 DOF: 12 RMS: 0.09
# Min/Max residuals: -0.20 0.22
# Exact a, adot, b, bdot, g, gdot:
1.406370E-05 2.131383E-02 -3.241575E-06 -4.833308E-03 2.343150E-02 -1.527383E-05
# Covariance matrix:
7.0373E-13 8.1200E-13 9.1276E-14 -3.7847E-13 1.7646E-12 5.8679E-11
8.1200E-13 7.7528E-11 3.3254E-12 -2.8555E-11 4.2146E-11 4.4713E-09
9.1276E-14 3.3254E-12 5.1542E-13 -1.5958E-12 1.9646E-12 1.9222E-10
-3.7847E-13 -2.8555E-11 -1.5958E-12 1.1299E-11 -1.5450E-11 -1.6632E-09
1.7646E-12 4.2146E-11 1.9646E-12 -1.5450E-11 2.7027E-11 2.4173E-09
5.8679E-11 4.4713E-09 1.9222E-10 -1.6632E-09 2.4173E-09 2.6046E-07
# lat0 lon0 xBary yBary zBary JD0
4.755335 150.340483 -0.498274 0.072130 -0.869715 2460024.743701
# Heliocentric elements and errors
Epoch: 2460020.5000 = 2023/03/17
Mean Anomaly: 163.13507 +/- 26.133
Argument of Peri: 355.27548 +/- 26.166
Long of Asc Node: 350.56142 +/- 0.007
Inclination: 13.67918 +/- 0.005
Eccentricity: 0.04704195 +/- 0.0062
Semi-Major Axis: 41.65982203 +/- 0.0140
Time of Perihelion: 2415514.4165 +/- 7129.5
Perihelion: 39.70006269 +/- 0.2584
Aphelion: 43.61958136 +/- 0.2585
Period (y) 268.8960 +/- 0.14
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X -37.95466375 +/- 0.0082
Ecliptic Y 21.04503867 +/- 0.0047
Ecliptic Z 3.53788228 +/- 0.0008
Ecliptic XDOT -0.00127342 +/- 0.0001
Ecliptic YDOT -0.00213313 +/- 0.0000
Ecliptic ZDOT -0.00056298 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 43.54270046 +/- 0.0075
Geocenter to KBO 42.67758608 +/- 0.0095
# Hcoef: 6.76
The following table shows the complete astrometric record for 23FH57. 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 (23FH57) followed by the observatory code and reference code for the source of the astrometry.
2023 03 21.24290 10 16 37.240 +15 47 47.21 23.1r 23FH57 T09 C~83ID 2023 03 21.43888 10 16 36.412 +15 47 50.36 23.0r 23FH57 T09 C~83ID 2023 05 23.16201 10 14 33.359 +15 50 00.08 23FH57 G37 C~83ID 2023 05 23.22775 10 14 33.387 +15 49 59.18 23FH57 G37 C~83ID 2023 05 24.15405 10 14 34.026 +15 49 46.73 23FH57 G37 C~83ID 2024 04 12.06430 10 19 35.447 +15 10 35.21 23.0r 23FH57 304 C~83ID 2024 04 12.15165 10 19 35.180 +15 10 35.80 23.1r 23FH57 304 C~83ID 2024 05 03.99504 10 18 51.937 +15 11 25.99 23.3r 23FH57 304 C~83ID 2024 05 04.10462 10 18 51.815 +15 11 26.06 23.3r 23FH57 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 0.07 0.00 -0.00
2 0.0005 -12.28 -0.03 -1.35 -0.10
3 0.1723 -1716.94 0.01 -516.16 0.05
4 0.1724 -1716.24 -0.12 -516.86 -0.01
5 0.1750 -1703.19 0.06 -525.19 0.08
6 1.0618 3208.19 0.05 -1152.15 0.05
7 1.0620 3204.37 -0.11 -1153.00 -0.09
8 1.1218 2602.54 0.08 -1332.86 -0.20
9 1.1221 2600.87 -0.01 -1333.44 0.22
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.
23FH57 quality flag:2 Type: CLASSICAL SCATEXTD CLASSICAL axisobj 41.896 42.245 41.770 ecceobj 0.044 0.074 0.054 incobj 13.657 13.670 13.647 qmin 39.179 35.938 38.596 qmax 44.750 48.910 45.057 amean 41.868 42.188 41.762 amin 41.551 41.815 41.432 amax 42.198 42.630 42.098 emean 0.045 0.107 0.056 emin 0.031 0.062 0.040 emax 0.061 0.148 0.072 imean 13.885 14.009 13.870 imin 13.133 12.824 13.082 imax 14.587 15.151 14.632 excite_mean 0.244 0.265 0.246 fracstop 1.000 1.000 1.000 cjmean 3.006 2.997 3.004 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 180.2 179.6 183.1 kozaiamp 179.9 179.9 180.0