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: 182397 # Created Fri Nov 22 02:06:58 2024 # Orbit generated by ELGB # -->Covariance matrix from a Bernstein fit # Fitting 29 observations of 29 # Arc: 22.00y # First observation: 2000/08/26 # Last observation: 2022/08/27 # Chi-squared of fit: 71.34 DOF: 52 RMS: 0.28 # Min/Max residuals: -0.78 0.54 # Exact a, adot, b, bdot, g, gdot: 1.388885E-05 2.019828E-02 -4.346840E-06 -6.168629E-03 2.216223E-02 4.468613E-03 # Covariance matrix: 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 # lat0 lon0 xBary yBary zBary JD0 -1.224011 -35.253134 -0.140631 -0.021483 -0.997461 2451782.576323 # Heliocentric elements and errors Epoch: 2451782.5000 = 2000/08/26 Mean Anomaly: 50.71361 +/- 0.000 Argument of Peri: 109.03950 +/- 0.000 Long of Asc Node: 141.01850 +/- 0.000 Inclination: 17.03640 +/- 0.000 Eccentricity: 0.23164292 +/- 0.0000 Semi-Major Axis: 51.64884337 +/- 0.0000 Time of Perihelion: 2432683.4680 +/- 0.0 Perihelion: 39.68475462 +/- 0.0000 Aphelion: 63.61293213 +/- 0.0000 Period (y) 371.1924 +/- 0.00 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 37.74039060 +/- 0.0000 Ecliptic Y -26.49408933 +/- 0.0000 Ecliptic Z -0.96406612 +/- 0.0000 Ecliptic XDOT 0.00187034 +/- 0.0000 Ecliptic YDOT 0.00173379 +/- 0.0000 Ecliptic ZDOT -0.00077352 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 46.12147088 +/- 0.0000 Geocenter to KBO 45.12170815 +/- 0.0000 # Hcoef: 6.31
The following table shows the complete astrometric record for 182397. 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 (182397) followed by the observatory code and reference code for the source of the astrometry.
2000 08 26.07558 21 49 50.13 -14 25 35.7 22.1R 182397 807 Cg3217 2000 08 26.15798 21 49 49.76 -14 25 38.0 182397 807 Cg3217 2001 08 20.13349 21 55 13.96 -14 19 29.8 21.4R 182397 807 Cd7926 2001 08 20.21344 21 55 13.62 -14 19 32.0 182397 807 Cd7926 2001 08 21.14872 21 55 09.70 -14 19 56.0 182397 807 Cd7926 2001 08 21.22234 21 55 09.37 -14 19 57.7 182397 807 Cd7926 2001 09 12.24807 21 53 40.31 -14 28 53.8 22.4R 182397 695 Cd7926 2001 09 12.29536 21 53 40.16 -14 28 54.8 182397 695 Cd7926 2002 08 09.18146 22 00 54.97 -14 10 49.9 22.0R 182397 807 Cg3217 2002 08 10.26262 22 00 50.59 -14 11 17.9 182397 807 Cg3217 2002 08 10.36770 22 00 50.12 -14 11 20.8 182397 807 Cg3217 2006 07 28.30598 22 20 47.31 -13 47 04.1 22.8R 182397 250 S~06I2 2006 07 28.31038 22 20 47.29 -13 47 04.2 182397 250 S~06I2 2006 07 28.31478 22 20 47.27 -13 47 04.3 182397 250 S~06I2 2006 07 28.36960 22 20 47.08 -13 47 05.7 182397 250 S~06I2 2007 07 11.35120 22 26 18.89 -13 34 50.5 182397 304 Cv1972 2007 07 11.39760 22 26 18.75 -13 34 51.5 182397 304 Cv1972 2007 09 17.23646 22 22 10.11 -14 03 23.1 182397 675 Cy6680 2007 09 17.24194 22 22 10.10 -14 03 23.2 23.5R 182397 675 Cy6680 2007 09 17.28484 22 22 09.92 -14 03 23.9 182397 675 Cy6680 2007 09 17.28967 22 22 09.91 -14 03 24.1 182397 675 Cy6680 2007 11 08.13018 22 20 03.83 -14 15 01.9 182397 695 Cy3972 2007 11 09.15319 22 20 03.20 -14 15 03.9 182397 695 Cy3972 2021 10 03.138940 23 22 17.648 -12 29 40.85 24.1G 182397 G37 C~5AHx 2021 10 03.191900 23 22 17.476 -12 29 42.26 182397 G37 C~5AHx 2021 10 03.244890 23 22 17.268 -12 29 43.12 182397 G37 C~5AHx 2022 08 27.251900 23 28 39.444 -12 05 21.22 23.7G 182397 G37 C~5njm 2022 08 27.298640 23 28 39.279 -12 05 22.37 182397 G37 C~5njm 2022 08 27.345590 23 28 39.092 -12 05 23.96 182397 G37 C~5njm
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 0.11 0.00 0.03
2 0.0002 0.00 -0.20 0.00 -0.21
3 0.9830 0.00 -0.06 0.00 -0.09
4 0.9833 0.00 -0.04 0.00 -0.23
5 0.9858 0.00 -0.04 0.00 -0.25
6 0.9860 0.00 -0.27 0.00 -0.06
7 1.0463 0.00 -0.18 0.00 0.09
8 1.0465 0.00 0.30 0.00 0.15
9 1.9524 0.00 -0.02 0.00 -0.10
10 1.9553 0.00 0.50 0.00 -0.07
11 1.9556 0.00 -0.01 0.00 -0.25
12 5.9199 0.00 0.51 0.00 0.52
13 5.9199 0.00 0.44 0.00 0.53
14 5.9199 0.00 0.37 0.00 0.54
15 5.9200 0.00 0.39 0.00 0.52
16 6.8728 0.00 -0.49 0.00 -0.08
17 6.8729 0.00 -0.78 0.00 -0.09
18 7.0586 0.00 -0.19 0.00 -0.22
19 7.0586 0.00 -0.02 0.00 -0.19
20 7.0588 0.00 -0.27 0.00 0.09
21 7.0588 0.00 -0.14 0.00 -0.01
22 7.2007 0.00 0.19 0.00 -0.36
23 7.2035 0.00 0.36 0.00 -0.34
24 21.1035 0.00 0.00 0.00 0.01
25 21.1037 0.00 0.26 0.00 -0.30
26 21.1038 0.00 -0.02 0.00 -0.06
27 22.0019 0.00 -0.03 0.00 0.01
28 22.0020 0.00 0.04 0.00 0.17
29 22.0021 0.00 -0.21 0.00 -0.11
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.
182397 quality flag:3 Type: 9:4EEEEE 9:4EEEEE 9:4EEEEE axisobj 51.780 51.780 51.780 ecceobj 0.233 0.233 0.233 incobj 17.019 17.019 17.019 qmin 37.381 37.383 37.378 qmax 66.690 66.691 66.689 amean 51.700 51.700 51.700 amin 51.179 51.179 51.179 amax 52.296 52.296 52.297 emean 0.253 0.252 0.253 emin 0.222 0.223 0.222 emax 0.276 0.276 0.276 imean 14.793 14.797 14.788 imin 13.811 13.816 13.803 imax 16.009 16.012 16.006 excite_mean 0.359 0.359 0.359 fracstop 1.000 1.000 1.000 cjmean 3.034 3.034 3.034 libcent 0 177.0 177.5 177.7 libamp 0 78.4 79.6 78.6 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 181.7 181.6 181.9 kozaiamp 180.0 180.0 180.0