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: 612081 # Created Sun Nov 24 02:07:37 2024 # Orbit generated by ELGB # -->Covariance matrix from a Bernstein fit # Fitting 47 observations of 47 # Arc: 23.04y # First observation: 1998/11/18 # Last observation: 2021/12/01 # Chi-squared of fit: 61.62 DOF: 88 RMS: 0.20 # Min/Max residuals: -0.62 0.52 # Exact a, adot, b, bdot, g, gdot: 1.584643E-05 2.522132E-02 1.374221E-06 9.576210E-04 2.475615E-02 -1.980899E-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 -0.495222 76.259188 0.335702 -0.008226 -0.925422 2451135.932941 # Heliocentric elements and errors Epoch: 2451136.5000 = 1998/11/19 Mean Anomaly: 324.02013 +/- 0.000 Argument of Peri: 33.17841 +/- 0.000 Long of Asc Node: 88.34264 +/- 0.000 Inclination: 2.22474 +/- 0.000 Eccentricity: 0.12713302 +/- 0.0000 Semi-Major Axis: 45.72722427 +/- 0.0000 Time of Perihelion: 2462424.5207 +/- 0.0 Perihelion: 39.91378396 +/- 0.0000 Aphelion: 51.54066459 +/- 0.0000 Period (y) 309.2221 +/- 0.00 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 10.14811757 +/- 0.0000 Ecliptic Y 40.05516345 +/- 0.0000 Ecliptic Z -0.34906981 +/- 0.0000 Ecliptic XDOT -0.00276188 +/- 0.0000 Ecliptic YDOT 0.00045974 +/- 0.0000 Ecliptic ZDOT 0.00010777 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 41.32223067 +/- 0.0000 Geocenter to KBO 40.39409074 +/- 0.0000 # Hcoef: 6.68
The following table shows the complete astrometric record for 612081. 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 (612081) followed by the observatory code and reference code for the source of the astrometry.
1998 11 18.43221 05 00 31.48 +22 14 15.4 22.1R 612081 695 Ca3208 1998 11 18.50365 05 00 31.12 +22 14 15.0 612081 695 Ca3208 1998 11 19.39534 05 00 26.67 +22 14 08.7 22.4R 612081 695 Ca3208 1998 11 19.50699 05 00 26.10 +22 14 08.0 612081 695 Ca3208 1999 01 22.29072 04 55 16.53 +22 07 13.1 22.8R 612081 568 Ca5544 1999 01 22.34875 04 55 16.33 +22 07 12.8 612081 568 Ca5544 1999 01 23.33334 04 55 13.05 +22 07 08.7 612081 568 Ca5544 1999 11 30.32365 05 05 44.82 +22 24 46.3 22.7R 612081 695 Ca9916 1999 11 30.33074 05 05 44.79 +22 24 46.4 22.5R 612081 695 Ca9916 1999 12 28.22900 05 03 16.68 +22 21 46.3 22.4R 612081 695 Ca9916 1999 12 28.23622 05 03 16.69 +22 21 46.2 22.5R 612081 695 Ca9916 1999 12 28.32757 05 03 16.15 +22 21 45.1 612081 695 Ca9916 1999 12 29.29841 05 03 11.30 +22 21 39.9 22.6R 612081 695 Ca9916 1999 12 29.30588 05 03 11.27 +22 21 39.8 22.8R 612081 695 Ca9916 1999 12 29.36427 05 03 10.96 +22 21 39.7 22.3R 612081 695 Ca9916 1999 12 29.37226 05 03 10.95 +22 21 39.6 22.3R 612081 695 Ca9916 2000 01 05.14468 05 02 38.14 +22 21 00.3 23.0R 612081 697 Ca9916 2000 01 05.22955 05 02 37.75 +22 20 59.6 23.0R 612081 697 Ca9916 2000 01 05.30292 05 02 37.39 +22 20 59.4 23.1R 612081 697 Ca9916 2000 11 23.45178 05 12 33.15 +22 36 22.4 22.8R 612081 695 Cc2190 2000 11 23.50455 05 12 32.87 +22 36 21.8 612081 695 Cc2190 2000 11 26.35848 05 12 18.14 +22 36 06.3 22.8R 612081 695 Cc2190 2000 11 26.45245 05 12 17.63 +22 36 05.7 22.9R 612081 695 Cc2190 2000 11 27.41353 05 12 12.62 +22 36 00.5 22.5R 612081 695 Cc2190 2002 01 30.08895 05 13 27.56 +22 41 32.8 20.5 612081 304 Cf1458 2002 01 30.11159 05 13 27.50 +22 41 32.7 612081 304 Cf1458 2002 02 13.04581 05 12 53.77 +22 41 08.5 21.5R 612081 304 f1458 2002 02 13.09976 05 12 53.67 +22 41 08.5 612081 304 f1458 2005 11 16.98956 05 44 59.11 +23 17 40.0 22.0R 612081 250 S~06AK 2005 11 16.99628 05 44 59.08 +23 17 40.0 612081 250 S~06AK 2005 11 17.00299 05 44 59.05 +23 17 40.0 612081 250 S~06AK 2008 12 21.40374 06 01 28.62 +23 31 05.2 21.4r 612081 695 C~0hkJ 2008 12 21.47708 06 01 28.21 +23 31 05.3 22.1r 612081 695 C~0hkJ 2008 12 22.38747 06 01 23.16 +23 31 06.0 21.8r 612081 695 C~0hkJ 2013 11 06.43622 06 37 54.56 +23 30 54.6 23.2R 612081 G37 C~0yiW 2013 11 06.51738 06 37 54.33 +23 30 54.9 612081 G37 C~0yiW 2015 01 20.28328 06 38 34.292 +23 34 43.42 23.1G 612081 F51 C~2r77 2015 01 20.29402 06 38 34.228 +23 34 43.59 23.0G 612081 F51 C~2r77 2015 01 20.30494 06 38 34.177 +23 34 43.82 23.5G 612081 F51 C~2r77 2015 01 20.31574 06 38 34.111 +23 34 43.87 24.0G 612081 F51 C~2r77 2015 12 14.38588 06 48 37.455 +23 27 27.31 23.0G 612081 F51 C~2r77 2016 01 04.46077 06 46 42.341 +23 29 52.33 22.9G 612081 F51 C~2r77 2017 03 24.24519 06 48 47.455 +23 31 02.94 22.2w 612081 568 C~2WWz 2017 12 12.43110 07 02 06.213 +23 16 39.28 22.5G 612081 F51 C~2r77 2021 12 01.429150 07 29 31.721 +22 40 46.30 22.5G 612081 G37 C~5J0s 2021 12 01.468950 07 29 31.549 +22 40 46.57 612081 G37 C~5J0s 2021 12 01.508520 07 29 31.382 +22 40 46.76 612081 G37 C~5J0s
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 0.08 0.00 -0.15
2 0.0002 0.00 0.08 0.00 -0.04
3 0.0026 0.00 0.07 0.00 -0.27
4 0.0029 0.00 0.04 0.00 -0.18
5 0.1776 0.00 0.16 0.00 -0.00
6 0.1777 0.00 0.17 0.00 -0.06
7 0.1804 0.00 -0.02 0.00 -0.16
8 1.0319 0.00 -0.11 0.00 0.08
9 1.0319 0.00 0.01 0.00 0.22
10 1.1083 0.00 -0.18 0.00 -0.03
11 1.1083 0.00 0.52 0.00 -0.09
12 1.1085 0.00 -0.56 0.00 -0.62
13 1.1112 0.00 -0.25 0.00 0.04
14 1.1112 0.00 -0.13 0.00 -0.02
15 1.1114 0.00 -0.34 0.00 0.25
16 1.1114 0.00 0.12 0.00 0.20
17 1.1299 0.00 0.10 0.00 0.20
18 1.1302 0.00 0.31 0.00 -0.04
19 1.1304 0.00 0.14 0.00 0.18
20 2.0151 0.00 -0.14 0.00 0.04
21 2.0153 0.00 -0.24 0.00 -0.25
22 2.0231 0.00 -0.11 0.00 -0.10
23 2.0233 0.00 -0.30 0.00 -0.16
24 2.0260 0.00 -0.10 0.00 -0.02
25 3.1996 0.00 -0.08 0.00 -0.12
26 3.1997 0.00 0.09 0.00 -0.17
27 3.2378 0.00 0.06 0.00 0.09
28 3.2380 0.00 0.03 0.00 0.15
29 6.9967 0.00 0.34 0.00 0.51
30 6.9968 0.00 0.35 0.00 0.52
31 6.9968 0.00 0.35 0.00 0.52
32 10.0916 0.00 -0.21 0.00 -0.04
33 10.0918 0.00 -0.18 0.00 0.03
34 10.0943 0.00 -0.14 0.00 0.00
35 14.9678 0.00 -0.14 0.00 -0.00
36 14.9681 0.00 -0.11 0.00 0.02
37 16.1721 0.00 0.08 0.00 -0.25
38 16.1721 0.00 -0.03 0.00 -0.14
39 16.1721 0.00 0.06 0.00 0.04
40 16.1722 0.00 -0.08 0.00 0.03
41 17.0704 0.00 0.07 0.00 -0.05
42 17.1281 0.00 0.08 0.00 -0.02
43 18.3458 0.00 -0.04 0.00 -0.10
44 19.0664 0.00 -0.14 0.00 -0.16
45 23.0363 0.00 0.25 0.00 0.14
46 23.0364 0.00 0.02 0.00 0.03
47 23.0365 0.00 -0.14 0.00 -0.15
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.
612081 quality flag:3 Type: CLASSICAL CLASSICAL CLASSICAL axisobj 45.905 45.905 45.905 ecceobj 0.130 0.130 0.130 incobj 2.224 2.224 2.224 qmin 38.869 38.864 38.831 qmax 52.794 52.800 52.763 amean 45.638 45.637 45.637 amin 45.265 45.254 45.254 amax 46.066 46.066 46.057 emean 0.131 0.131 0.131 emin 0.117 0.117 0.117 emax 0.146 0.146 0.146 imean 0.760 0.761 0.760 imin 0.028 0.028 0.028 imax 1.314 1.314 1.311 excite_mean 0.132 0.132 0.132 fracstop 1.000 1.000 1.000 cjmean 3.100 3.100 3.100 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 176.6 176.8 176.2 kozaiamp 179.9 179.9 180.0