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: 612100
# Created Wed Dec 25 02:07:37 2024
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting 28 observations of 28
# Arc: 20.87y
# First observation: 1999/09/06
# Last observation: 2020/07/21
# Chi-squared of fit: 62.42 DOF: 50 RMS: 0.26
# Min/Max residuals: -0.45 0.66
# Exact a, adot, b, bdot, g, gdot:
1.496954E-05 2.259182E-02 -9.260972E-07 -5.543067E-04 2.353285E-02 -1.052154E-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
0.048021 7.658508 0.413214 0.000543 -0.911985 2451428.041393
# Heliocentric elements and errors
Epoch: 2451428.5000 = 1999/09/07
Mean Anomaly: 295.51173 +/- 0.000
Argument of Peri: 249.13043 +/- 0.000
Long of Asc Node: 189.03613 +/- 0.000
Inclination: 1.40051 +/- 0.000
Eccentricity: 0.06148972 +/- 0.0000
Semi-Major Axis: 44.45051930 +/- 0.0000
Time of Perihelion: 2470819.1283 +/- 0.0
Perihelion: 41.71726927 +/- 0.0000
Aphelion: 47.18376933 +/- 0.0000
Period (y) 296.3626 +/- 0.00
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X 43.08125852 +/- 0.0000
Ecliptic Y 5.37759435 +/- 0.0000
Ecliptic Z 0.03558135 +/- 0.0000
Ecliptic XDOT -0.00047562 +/- 0.0000
Ecliptic YDOT 0.00259694 +/- 0.0000
Ecliptic ZDOT -0.00006453 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 43.41564023 +/- 0.0000
Geocenter to KBO 42.49385367 +/- 0.0000
# Hcoef: 6.86
The following table shows the complete astrometric record for 612100. 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 (612100) followed by the observatory code and reference code for the source of the astrometry.
1999 09 06.54065 00 28 03.40 +03 04 58.3 22.7R 612100 568 Ca8546 1999 09 06.57078 00 28 03.27 +03 04 57.4 22.8R 612100 568 Ca8546 1999 09 06.60771 00 28 03.14 +03 04 56.5 22.6R 612100 568 Ca8546 1999 09 10.52316 00 27 47.68 +03 03 15.7 22.9R 612100 568 Ca8546 1999 09 10.53360 00 27 47.65 +03 03 15.2 22.9R 612100 568 Ca8546 1999 10 08.46757 00 25 49.04 +02 50 21.8 23.1R 612100 568 Ca8546 1999 10 08.49378 00 25 48.96 +02 50 21.4 22.9R 612100 568 Ca8546 1999 11 09.39538 00 23 47.11 +02 37 03.6 22.9R 612100 568 Ca8546 1999 11 09.43564 00 23 46.98 +02 37 03.3 22.9R 612100 568 Ca8546 2000 08 08.33332 00 34 22.32 +03 43 36.3 22.9R 612100 809 Cc2286 2000 08 08.38203 00 34 22.19 +03 43 35.3 23.0R 612100 809 Cc2286 2000 08 08.41532 00 34 22.12 +03 43 34.8 612100 809 Cc2286 2000 08 27.57650 00 33 27.11 +03 37 35.8 23.0R 612100 568 Cb9109 2000 08 27.61252 00 33 26.99 +03 37 34.7 23.0R 612100 568 Cb9109 2000 08 29.59551 00 33 20.08 +03 36 50.0 23.1R 612100 568 Cb9109 2000 08 29.61833 00 33 20.00 +03 36 49.6 23.1R 612100 568 Cb9109 2000 11 26.12588 00 27 49.83 +03 00 58.8 23.0R 612100 695 Cc2286 2000 11 26.13124 00 27 49.89 +03 00 58.4 23.5R 612100 695 Cc2286 2000 11 26.23251 00 27 49.65 +03 00 57.5 22.3R 612100 695 Cc2286 2000 11 27.22284 00 27 47.69 +03 00 44.7 22.6R 612100 695 Cc2286 2013 10 05.40110 01 35 23.71 +09 30 40.6 22.8R 612100 695 C~0zdB 2013 10 05.46354 01 35 23.45 +09 30 38.9 612100 695 C~0zdB 2013 10 06.40926 01 35 19.30 +09 30 14.4 612100 695 C~0zdB 2013 11 06.26585 01 33 01.66 +09 16 48.5 22.9R 612100 G37 C~0yiW 2013 11 06.32417 01 33 01.39 +09 16 46.3 612100 G37 C~0yiW 2019 11 27.163840 02 02 36.123 +11 50 03.74 22.7G 612100 G37 C~3cUc 2019 11 27.226170 02 02 35.913 +11 50 02.54 612100 G37 C~3cUc 2020 07 21.598848 02 13 53.780 +12 48 55.74 23.5G 612100 T14 C~3yxj
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 -0.01 0.00 0.12
2 0.0001 0.00 -0.17 0.00 -0.02
3 0.0002 0.00 0.06 0.00 0.02
4 0.0109 0.00 -0.18 0.00 -0.13
5 0.0109 0.00 0.01 0.00 -0.35
6 0.0874 0.00 -0.01 0.00 -0.35
7 0.0875 0.00 0.51 0.00 -0.02
8 0.1748 0.00 -0.35 0.00 -0.38
9 0.1749 0.00 -0.39 0.00 0.14
10 0.9221 0.00 0.27 0.00 0.48
11 0.9222 0.00 0.02 0.00 0.20
12 0.9223 0.00 0.14 0.00 0.19
13 0.9748 0.00 0.04 0.00 -0.14
14 0.9749 0.00 0.13 0.00 -0.44
15 0.9803 0.00 -0.16 0.00 -0.34
16 0.9804 0.00 -0.13 0.00 -0.21
17 1.2227 0.00 -0.45 0.00 0.25
18 1.2227 0.00 0.62 0.00 -0.08
19 1.2230 0.00 0.17 0.00 0.37
20 1.2257 0.00 -0.10 0.00 0.42
21 14.0804 0.00 -0.29 0.00 0.12
22 14.0806 0.00 -0.02 0.00 0.04
23 14.0831 0.00 0.09 0.00 0.01
24 14.1676 0.00 -0.02 0.00 0.66
25 14.1678 0.00 -0.29 0.00 -0.10
26 20.2235 0.00 -0.05 0.00 -0.22
27 20.2236 0.00 0.45 0.00 -0.16
28 20.8735 0.00 -0.05 0.00 -0.18
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.
612100 quality flag:3 Type: CLASSICAL CLASSICAL CLASSICAL axisobj 44.427 44.427 44.427 ecceobj 0.062 0.062 0.062 incobj 1.400 1.400 1.400 qmin 40.444 40.436 40.453 qmax 48.041 48.039 48.050 amean 44.117 44.117 44.117 amin 43.775 43.769 43.775 amax 44.484 44.484 44.483 emean 0.064 0.064 0.064 emin 0.048 0.047 0.048 emax 0.081 0.081 0.081 imean 2.412 2.412 2.412 imin 1.677 1.677 1.677 imax 3.091 3.091 3.091 excite_mean 0.077 0.077 0.077 fracstop 1.000 1.000 1.000 cjmean 3.096 3.096 3.096 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 194.5 194.4 194.5 kozaiamp 180.0 180.0 180.0