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 Mar 29 01:19:47 2024 # Orbit generated from Bernstein formalism # Fitting 13 observations of 13 # Arc: 2.09y # First observation: 2021/03/22 # Last observation: 2023/04/24 Preliminary a, adot, b, bdot, g, gdot: -0.000002 0.031910 0.000004 0.003038 0.029907 0.000000 # Chi-squared of fit: 60.54 DOF: 20 RMS: 0.38 # Min/Max residuals: -0.72 0.83 # Exact a, adot, b, bdot, g, gdot: 1.295164E-05 3.194126E-02 4.228440E-06 3.045605E-03 2.977057E-02 2.544158E-03 # Covariance matrix: 3.2574E-13 -1.0582E-12 3.1971E-14 -1.8231E-13 2.6151E-12 -3.1802E-11 -1.0582E-12 1.2259E-11 -4.8175E-13 2.7533E-12 -4.5569E-11 4.7998E-10 3.1971E-14 -4.8175E-13 2.6841E-13 -2.8724E-13 2.0354E-12 -2.0220E-11 -1.8231E-13 2.7533E-12 -2.8724E-13 8.8107E-13 -1.1658E-11 1.1568E-10 2.6151E-12 -4.5569E-11 2.0354E-12 -1.1658E-11 2.1723E-10 -2.0310E-09 -3.1802E-11 4.7998E-10 -2.0220E-11 1.1568E-10 -2.0310E-09 2.0160E-08 # 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: 70.02016 +/- 0.887 Argument of Peri: 293.23784 +/- 0.647 Long of Asc Node: 187.77161 +/- 0.003 Inclination: 5.56451 +/- 0.001 Eccentricity: 0.07038358 +/- 0.0049 Semi-Major Axis: 35.22680179 +/- 0.1026 Time of Perihelion: 2444436.9994 +/- 176.7 Perihelion: 32.74741343 +/- 0.1963 Aphelion: 37.70619014 +/- 0.2037 Period (y) 209.0827 +/- 0.91 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X -32.69270980 +/- 0.0157 Ecliptic Y -11.12597637 +/- 0.0055 Ecliptic Z 0.64329286 +/- 0.0003 Ecliptic XDOT 0.00076138 +/- 0.0000 Ecliptic YDOT -0.00284143 +/- 0.0000 Ecliptic ZDOT 0.00028432 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 34.54004126 +/- 0.0150 Geocenter to KBO 33.59022391 +/- 0.0166 # Hcoef: 8.19
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
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 0.83 0.00 -0.54 2 0.0001 -2.74 -0.14 0.40 -0.18 3 0.0001 -4.71 -0.51 0.89 0.28 4 0.0055 -167.41 0.54 5.54 0.31 5 0.0056 -171.59 -0.67 5.13 -0.16 6 1.0102 6256.86 -0.05 636.63 0.42 7 1.0103 6254.42 0.49 636.30 0.02 8 1.0103 6251.11 -0.16 636.15 -0.18 9 1.0156 6088.77 -0.72 641.35 0.58 10 1.0157 6086.76 0.16 640.75 -0.08 11 1.0158 6083.72 0.20 640.71 -0.18 12 2.0890 10319.93 0.11 1311.80 0.04 13 2.0892 10314.33 -0.07 1311.47 -0.32
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: SCATNEAR SCATNEAR 5:4E axisobj 35.225 35.641 34.829 ecceobj 0.073 0.087 0.060 incobj 5.572 5.575 5.570 qmin 31.757 31.727 32.133 qmax 42.038 41.849 37.969 amean 36.260 35.882 34.949 amin 35.005 34.876 34.667 amax 37.135 37.127 35.246 emean 0.087 0.066 0.059 emin 0.046 0.033 0.038 emax 0.134 0.128 0.079 imean 4.577 5.395 4.445 imin 3.005 4.055 3.203 imax 6.734 6.846 5.523 excite_mean 0.119 0.116 0.098 fracstop 1.000 1.000 1.000 cjmean 3.010 3.008 3.006 libcent 0 -180.0 -180.0 180.2 libamp 0 -180.0 -180.0 49.2 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 177.5 178.2 179.9 kozaiamp 180.0 180.0 180.0