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: 22FH9
# Created Fri Nov 22 02:11:12 2024
# Orbit generated from Bernstein formalism
# Fitting 16 observations of 16
# Arc: 3.12y
# First observation: 2021/03/22
# Last observation: 2024/05/04
Preliminary a, adot, b, bdot, g, gdot:
0.000021 0.031885 0.000008 0.003031 0.030020 0.000000
# Chi-squared of fit: 71.48 DOF: 26 RMS: 0.37
# Min/Max residuals: -0.67 0.75
# Exact a, adot, b, bdot, g, gdot:
1.350361E-05 3.193164E-02 4.860680E-06 3.042862E-03 2.981168E-02 2.138186E-03
# Covariance matrix:
2.8272E-13 -3.6801E-13 8.3053E-15 -2.5063E-14 -3.0207E-13 -2.6884E-12
-3.6801E-13 1.0646E-12 -2.3275E-14 6.9260E-14 1.7442E-12 7.4008E-12
8.3053E-15 -2.3275E-14 2.0418E-13 -9.5870E-14 9.3735E-14 -6.1582E-13
-2.5063E-14 6.9260E-14 -9.5870E-14 9.1430E-14 -3.0534E-13 1.9192E-12
-3.0207E-13 1.7442E-12 9.3735E-14 -3.0534E-13 1.7220E-11 -3.3404E-11
-2.6884E-12 7.4008E-12 -6.1582E-13 1.9192E-12 -3.3404E-11 2.0762E-10
# lat0 lon0 xBary yBary zBary JD0
1.097138 -160.700440 0.312447 0.018154 -0.953425 2459295.683221
# Heliocentric elements and errors
Epoch: 2459290.5000 = 2021/03/17
Mean Anomaly: 73.63622 +/- 0.322
Argument of Peri: 291.08714 +/- 0.347
Long of Asc Node: 187.76508 +/- 0.001
Inclination: 5.56156 +/- 0.001
Eccentricity: 0.05654952 +/- 0.0005
Semi-Major Axis: 34.94443188 +/- 0.0202
Time of Perihelion: 2443857.3570 +/- 66.1
Perihelion: 32.96834098 +/- 0.0262
Aphelion: 36.92052279 +/- 0.0279
Period (y) 206.5738 +/- 0.18
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X -32.64898561 +/- 0.0044
Ecliptic Y -11.11068374 +/- 0.0015
Ecliptic Z 0.64242678 +/- 0.0001
Ecliptic XDOT 0.00079523 +/- 0.0000
Ecliptic YDOT -0.00282435 +/- 0.0000
Ecliptic ZDOT 0.00028296 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 34.49371344 +/- 0.0042
Geocenter to KBO 33.54389445 +/- 0.0047
# Hcoef: 8.17
The following table shows the complete astrometric record for 22FH9. 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 (22FH9) followed by the observatory code and reference code for the source of the astrometry.
2021 03 22.18242 13 12 55.17 -06 32 19.8 22FH9 W93 C~5Zfa 2021 03 22.20353 13 12 55.01 -06 32 18.4 22.8R 22FH9 W93 C~5Zfa 2021 03 22.22274 13 12 54.90 -06 32 17.2 23.3R 22FH9 W93 C~5Zfa 2021 03 24.19721 13 12 44.91 -06 31 11.4 23.2R 22FH9 W93 C~5Zfa 2021 03 24.23220 13 12 44.64 -06 31 10.2 23.1R 22FH9 W93 C~5Zfa 2022 03 26.14496 13 19 40.32 -07 01 43.8 22FH9 W93 C~5Zfa 2022 03 26.18023 13 19 40.16 -07 01 43.2 22FH9 W93 C~5Zfa 2022 03 26.21168 13 19 39.95 -07 01 42.1 23.0R 22FH9 W93 C~5Zfa 2022 03 28.14190 13 19 29.98 -07 00 36.5 23.7R 22FH9 W93 C~5Zfa 2022 03 28.17563 13 19 29.84 -07 00 36.3 23.5R 22FH9 W93 C~5Zfa 2022 03 28.21163 13 19 29.65 -07 00 35.2 23.5R 22FH9 W93 C~5Zfa 2023 04 24.183950 13 24 10.053 -07 16 33.59 22.9G 22FH9 G37 C~6hd9 2023 04 24.246640 13 24 09.696 -07 16 31.81 22FH9 G37 C~6hd9 2024 05 04.274010 13 30 16.435 -07 41 29.58 23.1G 22FH9 G37 C~82ny 2024 05 04.306060 13 30 16.268 -07 41 28.51 22FH9 G37 C~82ny 2024 05 04.338100 13 30 16.106 -07 41 27.92 22FH9 G37 C~82ny
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 0.71 0.00 -0.67
2 0.0001 -2.74 -0.26 0.40 -0.31
3 0.0001 -4.71 -0.62 0.89 0.14
4 0.0055 -167.41 0.71 5.54 0.18
5 0.0056 -171.59 -0.50 5.13 -0.29
6 1.0102 6256.86 -0.22 636.63 0.60
7 1.0103 6254.42 0.33 636.30 0.20
8 1.0103 6251.11 -0.31 636.15 -0.01
9 1.0156 6088.77 -0.53 641.35 0.75
10 1.0157 6086.76 0.35 640.75 0.10
11 1.0158 6083.72 0.40 640.71 -0.00
12 2.0890 10319.93 0.01 1311.80 -0.04
13 2.0892 10314.33 -0.16 1311.47 -0.40
14 3.1187 15958.57 0.03 1945.73 -0.01
15 3.1188 15955.85 -0.05 1945.81 0.06
16 3.1188 15953.38 0.12 1945.46 -0.28
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.
22FH9 quality flag:2 Type: 5:4E REMOVED 5:4E axisobj 34.938 35.006 34.870 ecceobj 0.059 0.061 0.058 incobj 5.570 5.570 5.569 qmin 32.313 30.775 32.223 qmax 37.990 53.828 37.959 amean 34.950 35.578 34.950 amin 34.595 32.352 34.646 amax 35.324 42.885 35.267 emean 0.052 0.067 0.055 emin 0.028 0.001 0.035 emax 0.076 0.255 0.077 imean 4.590 3.558 4.476 imin 3.571 0.497 3.317 imax 5.536 6.145 5.518 excite_mean 0.096 0.099 0.096 fracstop 1.000 0.722 1.000 cjmean 3.007 3.009 3.007 libcent 0 180.9 -180.0 180.1 libamp 0 105.2 -180.0 67.1 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 180.0 207.7 180.1 kozaiamp 180.0 179.9 180.0