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: 119976 # Created Thu Nov 21 02:06:52 2024 # Orbit generated by ELGB # -->Covariance matrix from a Bernstein fit # Fitting 31 observations of 31 # Arc: 16.17y # First observation: 2002/11/07 # Last observation: 2019/01/08 # Chi-squared of fit: 133.28 DOF: 56 RMS: 0.37 # Min/Max residuals: -1.20 0.85 # Exact a, adot, b, bdot, g, gdot: 2.977467E-05 1.340824E-01 -4.294493E-06 -7.928176E-03 7.106174E-02 -1.655486E-02 # 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 -1.218057 19.204522 -0.418735 -0.019065 -0.895028 2452585.648713 # Heliocentric elements and errors Epoch: 2452586.5000 = 2002/11/08 Mean Anomaly: 351.79925 +/- 0.000 Argument of Peri: 218.84591 +/- 0.000 Long of Asc Node: 181.88668 +/- 0.000 Inclination: 3.52296 +/- 0.000 Eccentricity: 0.38618946 +/- 0.0000 Semi-Major Axis: 23.99057117 +/- 0.0000 Time of Perihelion: 2453564.2103 +/- 0.0 Perihelion: 14.72566544 +/- 0.0000 Aphelion: 33.25547690 +/- 0.0000 Period (y) 117.5084 +/- 0.00 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 13.99272352 +/- 0.0000 Ecliptic Y 5.32320003 +/- 0.0000 Ecliptic Z -0.29918275 +/- 0.0000 Ecliptic XDOT -0.00231504 +/- 0.0000 Ecliptic YDOT 0.00466308 +/- 0.0000 Ecliptic ZDOT -0.00029162 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 14.97409382 +/- 0.0000 Geocenter to KBO 14.07236090 +/- 0.0000 # Hcoef: 11.20
The following table shows the complete astrometric record for 119976. 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 (119976) followed by the observatory code and reference code for the source of the astrometry.
2002 11 07.14797 01 12 44.96 +06 23 27.5 22.0R 119976 695 Cg8319 2002 11 07.25554 01 12 43.92 +06 23 21.0 119976 695 Cg8319 2002 11 28.15457 01 10 01.27 +06 06 20.7 22.6R 119976 688 Cg8319 2002 11 28.25486 01 10 00.67 +06 06 17.1 119976 688 Cg8319 2002 12 02.17344 01 09 39.40 +06 04 05.4 22.6R 119976 688 Cg8319 2002 12 02.26920 01 09 38.85 +06 04 02.1 119976 688 Cg8319 2003 01 03.08198 01 09 01.98 +06 00 33.0 22.5R 119976 688 Ch0066 2003 01 03.17440 01 09 02.25 +06 00 35.5 119976 688 Ch0066 2003 11 24.14643 01 39 58.61 +08 35 19.6 22.1R 119976 695 Cm1727 2003 11 24.22067 01 39 57.98 +08 35 16.3 119976 695 Cm1727 2004 11 20.23468 02 11 03.60 +10 58 34.1 22.4R 119976 568 Cm1727 2004 11 20.31509 02 11 02.78 +10 58 29.8 119976 568 Cm1727 2005 09 29.40339 02 51 52.43 +13 56 13.6 22.9R 119976 688 Co3857 2005 09 29.48598 02 51 51.81 +13 56 08.7 119976 688 Co3857 2006 08 03.19191 03 22 46.99 +15 55 27.9 22.4R 119976 250 S~06HB 2006 08 03.19630 03 22 47.03 +15 55 28.1 119976 250 S~06HB 2006 08 03.20070 03 22 47.07 +15 55 28.1 119976 250 S~06HB 2006 08 03.20510 03 22 47.10 +15 55 28.2 119976 250 S~06HB 2013 12 11.567095 06 38 46.992 +19 25 31.87 24.1G 119976 F51 C~42BO 2013 12 11.582185 06 38 46.821 +19 25 31.86 23.4G 119976 F51 C~42BO 2015 01 20.319074 06 56 05.240 +19 09 24.92 23.8G 119976 F51 C~42BO 2015 02 18.15566 06 51 47.89 +19 18 46.6 24.3R 119976 695 C~1MUI 2015 02 18.20306 06 51 47.57 +19 18 47.6 119976 695 C~1MUI 2015 02 18.24837 06 51 47.26 +19 18 48.2 119976 695 C~1MUI 2016 02 10.276077 07 15 58.398 +18 44 33.38 24.5G 119976 F51 C~42BO 2018 01 16.346568 08 02 17.946 +17 05 24.03 23.5G 119976 F51 C~42BO 2018 01 16.358212 08 02 17.795 +17 05 24.14 23.5G 119976 F51 C~42BO 2018 01 16.369831 08 02 17.687 +17 05 24.47 22.8G 119976 F51 C~42BO 2018 01 16.381512 08 02 17.566 +17 05 25.07 23.4G 119976 F51 C~42BO 2018 01 20.364463 08 01 35.749 +17 07 33.55 23.5G 119976 F51 C~42BO 2019 01 08.379236 08 22 42.332 +16 09 03.12 24.3G 119976 F51 C~42BO
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 -0.19 0.00 0.49
2 0.0003 0.00 -0.23 0.00 0.40
3 0.0575 0.00 0.21 0.00 0.35
4 0.0578 0.00 0.34 0.00 0.40
5 0.0685 0.00 0.46 0.00 0.32
6 0.0688 0.00 -0.33 0.00 -0.02
7 0.1559 0.00 -0.45 0.00 0.05
8 0.1561 0.00 -0.10 0.00 0.85
9 1.0459 0.00 -0.47 0.00 0.13
10 1.0461 0.00 -0.46 0.00 0.35
11 2.0372 0.00 -0.29 0.00 0.42
12 2.0374 0.00 -0.15 0.00 0.35
13 2.8946 0.00 -0.56 0.00 -0.10
14 2.8948 0.00 0.26 0.00 -1.20
15 3.7373 0.00 0.16 0.00 -0.69
16 3.7373 0.00 0.23 0.00 -0.57
17 3.7373 0.00 0.29 0.00 -0.64
18 3.7373 0.00 0.20 0.00 -0.62
19 11.0949 0.00 0.02 0.00 0.04
20 11.0950 0.00 -0.04 0.00 -0.05
21 12.2031 0.00 0.01 0.00 0.19
22 12.2820 0.00 -0.11 0.00 0.29
23 12.2821 0.00 -0.15 0.00 0.41
24 12.2823 0.00 -0.26 0.00 0.18
25 13.2598 0.00 0.49 0.00 -0.16
26 15.1929 0.00 0.23 0.00 0.24
27 15.1929 0.00 -0.18 0.00 -0.03
28 15.1929 0.00 0.06 0.00 -0.07
29 15.1930 0.00 0.12 0.00 0.15
30 15.2039 0.00 -0.29 0.00 0.55
31 16.1704 0.00 0.18 0.00 0.01
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.
119976 quality flag:3 Type: CENTAURR CENTAURR CENTAURR axisobj 24.170 24.170 24.170 ecceobj 0.390 0.390 0.390 incobj 3.517 3.517 3.517 qmin 14.666 14.742 14.742 qmax 33.677 33.689 35.396 amean 24.063 24.195 24.799 amin 23.506 23.752 23.774 amax 24.438 24.443 25.775 emean 0.378 0.379 0.372 emin 0.372 0.372 0.363 emax 0.390 0.390 0.390 imean 3.433 3.417 3.207 imin 3.313 3.302 2.874 imax 3.595 3.596 3.594 excite_mean 0.383 0.384 0.377 fracstop 0.001 0.001 0.003 cjmean 2.905 2.902 2.897 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 236.5 231.5 258.5 kozaiamp 17.8 13.3 35.7