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: 612102 # Created Sun Dec 22 02:07:43 2024 # Orbit generated by ELGB # -->Covariance matrix from a Bernstein fit # Fitting 26 observations of 26 # Arc: 19.02y # First observation: 1999/09/07 # Last observation: 2018/09/14 # Chi-squared of fit: 78.28 DOF: 46 RMS: 0.31 # Min/Max residuals: -0.78 0.82 # Exact a, adot, b, bdot, g, gdot: 1.446547E-05 2.148525E-02 -5.968012E-07 -2.709931E-03 2.380659E-02 2.534001E-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 -9.062547 8.396761 0.409760 -0.144064 -0.901784 2451429.011913 # Heliocentric elements and errors Epoch: 2451428.5000 = 1999/09/07 Mean Anomaly: 122.10916 +/- 0.000 Argument of Peri: 97.07335 +/- 0.000 Long of Asc Node: 137.45943 +/- 0.000 Inclination: 11.45015 +/- 0.000 Eccentricity: 0.13287494 +/- 0.0000 Semi-Major Axis: 39.66476337 +/- 0.0000 Time of Perihelion: 2420479.1533 +/- 0.0 Perihelion: 34.39431031 +/- 0.0000 Aphelion: 44.93521644 +/- 0.0000 Period (y) 249.8133 +/- 0.00 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 42.00704446 +/- 0.0000 Ecliptic Y 5.78779239 +/- 0.0000 Ecliptic Z -6.61636177 +/- 0.0000 Ecliptic XDOT -0.00012877 +/- 0.0000 Ecliptic YDOT 0.00248758 +/- 0.0000 Ecliptic ZDOT -0.00035360 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 42.91690912 +/- 0.0000 Geocenter to KBO 42.00514436 +/- 0.0000 # Hcoef: 7.46
The following table shows the complete astrometric record for 612102. 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 (612102) followed by the observatory code and reference code for the source of the astrometry.
1999 09 07.51117 00 45 08.61 -04 59 59.6 24.3R 612102 568 Ca8547 1999 09 07.55015 00 45 08.46 -05 00 00.8 23.4R 612102 568 Ca8547 1999 09 07.59142 00 45 08.28 -05 00 01.5 23.1R 612102 568 Ca8547 1999 09 10.59454 00 44 56.64 -05 01 37.4 23.8R 612102 568 Ca8547 1999 09 10.60498 00 44 56.59 -05 01 37.9 23.4R 612102 568 Ca8547 1999 10 10.41986 00 42 48.82 -05 16 47.9 23.6R 612102 568 Ca8547 1999 10 10.46961 00 42 48.62 -05 16 49.3 23.6R 612102 568 Ca8547 1999 10 11.44638 00 42 44.33 -05 17 16.4 23.6R 612102 568 Ca8547 1999 10 11.49807 00 42 44.10 -05 17 17.7 23.5R 612102 568 Ca8547 1999 11 11.38953 00 40 41.23 -05 28 03.0 23.6R 612102 568 Ca8547 1999 11 11.44068 00 40 41.03 -05 28 03.6 24.2R 612102 568 Ca8547 2000 12 27.24300 00 44 08.009 -05 07 25.10 23.2R 612102 568 Cl2529 2000 12 28.25263 00 44 08.289 -05 07 10.60 23.1R 612102 568 Cl2529 2003 11 21.15416 00 59 05.71 -04 07 55.2 24.0R 612102 695 Cl2529 2003 11 21.20316 00 59 05.56 -04 07 55.7 612102 695 Cl2529 2015 11 08.14163 01 54 45.56 +00 01 09.7 23.5R 612102 G37 C~1dc0 2015 11 08.21319 01 54 45.32 +00 01 08.4 612102 G37 C~1dc0 2016 09 10.29392 02 03 07.009 +00 46 52.02 23.0r 612102 W84 C~4yC4 2016 11 28.12449 01 57 52.002 +00 16 08.53 24.3r 612102 W84 C~4yC4 2017 09 18.33799 02 07 09.214 +01 03 15.82 24.8r 612102 W84 C~4yC4 2017 10 27.24057 02 04 31.498 +00 45 38.08 24.4g 612102 W84 C~4yC4 2017 10 29.23867 02 04 22.646 +00 44 50.97 22.8z 612102 W84 C~4yC4 2017 11 16.15429 02 03 05.590 +00 38 54.83 23.7r 612102 W84 C~4yC4 2018 09 09.35165 02 12 02.535 +01 27 26.77 22.5r 612102 W84 C~4yC4 2018 09 09.35304 02 12 02.541 +01 27 26.71 23.2i 612102 W84 C~4yC4 2018 09 14.36371 02 11 48.369 +01 25 11.07 24.4r 612102 W84 C~4yC4
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 0.06 0.00 -0.24
2 0.0001 0.00 0.09 0.00 -0.20
3 0.0002 0.00 -0.20 0.00 0.41
4 0.0084 0.00 0.02 0.00 0.25
5 0.0085 0.00 -0.11 0.00 0.08
6 0.0901 0.00 -0.21 0.00 -0.19
7 0.0902 0.00 0.13 0.00 -0.22
8 0.0929 0.00 0.18 0.00 -0.60
9 0.0931 0.00 0.19 0.00 -0.49
10 0.1776 0.00 0.15 0.00 -0.33
11 0.1778 0.00 -0.24 0.00 -0.25
12 1.3052 0.00 -0.03 0.00 0.50
13 1.3080 0.00 0.14 0.00 0.39
14 4.2044 0.00 -0.15 0.00 0.52
15 4.2045 0.00 -0.12 0.00 0.48
16 16.1687 0.00 -0.78 0.00 0.72
17 16.1689 0.00 0.25 0.00 0.82
18 17.0097 0.00 0.04 0.00 -0.26
19 17.2255 0.00 -0.05 0.00 -0.15
20 18.0310 0.00 0.15 0.00 -0.10
21 18.1375 0.00 0.04 0.00 -0.09
22 18.1430 0.00 0.07 0.00 -0.33
23 18.1920 0.00 0.08 0.00 -0.23
24 19.0057 0.00 -0.08 0.00 -0.12
25 19.0057 0.00 0.07 0.00 -0.14
26 19.0194 0.00 0.28 0.00 -0.24
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.
612102 quality flag:3 Type: 3:2E 3:2E 3:2E axisobj 39.642 39.642 39.642 ecceobj 0.133 0.133 0.133 incobj 11.454 11.454 11.454 qmin 32.599 32.598 32.600 qmax 46.744 46.744 46.744 amean 39.457 39.457 39.457 amin 39.064 39.064 39.064 amax 39.896 39.897 39.895 emean 0.153 0.153 0.153 emin 0.131 0.131 0.131 emax 0.172 0.172 0.172 imean 9.645 9.645 9.645 imin 8.834 8.832 8.834 imax 10.537 10.537 10.538 excite_mean 0.227 0.227 0.227 fracstop 1.000 1.000 1.000 cjmean 2.994 2.994 2.994 libcent 0 179.9 179.9 180.0 libamp 0 60.8 60.6 60.8 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 179.4 179.4 179.4 kozaiamp 180.0 180.0 180.0