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: 06CH69
# Created Sun Nov 24 02:08:48 2024
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting 30 observations of 30
# Arc: 18.10y
# First observation: 2005/02/10
# Last observation: 2023/03/18
# Chi-squared of fit: 46.54 DOF: 54 RMS: 0.22
# Min/Max residuals: -0.50 0.88
# Exact a, adot, b, bdot, g, gdot:
1.373726E-05 2.219645E-02 2.259788E-07 -1.990881E-05 2.310863E-02 2.788407E-04
# Covariance matrix:
1.4191E-13 -4.2242E-14 1.0255E-16 4.2484E-17 1.1635E-14 -8.9594E-14
-4.2242E-14 2.6989E-14 1.2115E-16 -3.2646E-17 1.0495E-14 6.4844E-14
1.0255E-16 1.2115E-16 8.8402E-14 -6.7124E-15 1.5633E-15 2.8287E-16
4.2484E-17 -3.2646E-17 -6.7124E-15 1.1682E-15 -2.6980E-17 -8.1792E-17
1.1635E-14 1.0495E-14 1.5633E-15 -2.6980E-17 1.5090E-13 2.4287E-14
-8.9594E-14 6.4844E-14 2.8287E-16 -8.1792E-17 2.4287E-14 1.6287E-13
# lat0 lon0 xBary yBary zBary JD0
1.830395 132.620484 -0.150529 0.031159 -0.971450 2453411.796653
# Heliocentric elements and errors
Epoch: 2453412.5000 = 2005/02/11
Mean Anomaly: 19.40890 +/- 0.030
Argument of Peri: 70.63211 +/- 0.033
Long of Asc Node: 41.15407 +/- 0.003
Inclination: 1.79082 +/- 0.000
Eccentricity: 0.04068339 +/- 0.0000
Semi-Major Axis: 46.00492437 +/- 0.0032
Time of Perihelion: 2447267.7618 +/- 9.5
Perihelion: 44.13328809 +/- 0.0038
Aphelion: 47.87656066 +/- 0.0040
Period (y) 312.0432 +/- 0.03
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X -30.06114972 +/- 0.0005
Ecliptic Y 32.43994878 +/- 0.0005
Ecliptic Z 1.38221231 +/- 0.0000
Ecliptic XDOT -0.00195772 +/- 0.0000
Ecliptic YDOT -0.00176356 +/- 0.0000
Ecliptic ZDOT -0.00000124 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 44.24853322 +/- 0.0005
Geocenter to KBO 43.27391081 +/- 0.0007
# Hcoef: 6.51
The following table shows the complete astrometric record for 06CH69. 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 (06CH69) followed by the observatory code and reference code for the source of the astrometry.
2005 02 10.29591 09 02 31.07 +18 46 32.1 23.5g 06CH69 568 C~0VEH 2005 02 10.37891 09 02 30.67 +18 46 33.9 23.6g 06CH69 568 C~0VEH 2005 02 10.41832 09 02 30.48 +18 46 34.6 23.8g 06CH69 568 C~0VEH 2005 04 11.28159 08 59 11.43 +18 58 49.4 22.4i 06CH69 568 C~0VEH 2005 04 11.30755 08 59 11.39 +18 58 49.4 22.5i 06CH69 568 C~0VEH 2005 04 11.33715 08 59 11.37 +18 58 49.6 22.7i 06CH69 568 C~0VEH 2006 02 03.45682 09 08 13.26 +18 22 04.9 06CH69 568 C74770 2006 02 06.30677 09 07 59.73 +18 23 03.3 22.8r 06CH69 568 C74770 2006 02 06.34646 09 07 59.55 +18 23 04.2 22.7r 06CH69 568 C74770 2006 02 06.38730 09 07 59.35 +18 23 05.1 23.0r 06CH69 568 C74770 2006 11 23.47322 09 17 11.17 +17 40 21.8 06CH69 695 C~0VEH 2006 11 24.47718 09 17 10.55 +17 40 27.2 06CH69 695 C~0VEH 2007 02 14.47836 09 12 29.29 +18 03 11.8 22.9r 06CH69 568 C~0VEH 2007 02 14.51197 09 12 29.12 +18 03 12.5 22.7r 06CH69 568 C~0VEH 2007 02 14.54506 09 12 28.97 +18 03 12.9 22.8r 06CH69 568 C~0VEH 2007 02 15.48922 09 12 24.58 +18 03 31.6 22.9r 06CH69 568 C~0VEH 2008 05 03.18246 09 14 09.59 +17 53 07.9 06CH69 695 C~0VEH 2008 05 03.19137 09 14 09.59 +17 53 07.7 06CH69 695 C~0VEH 2008 05 04.14958 09 14 10.07 +17 53 03.2 06CH69 695 C~0VEH 2008 05 04.15471 09 14 10.07 +17 53 03.2 06CH69 695 C~0VEH 2013 03 13.13907 09 40 37.52 +15 48 13.2 22.7R 06CH69 G37 C~0qSe 2013 03 13.18991 09 40 37.32 +15 48 14.1 06CH69 G37 C~0qSe 2018 04 12.14077 10 03 26.484 +13 45 40.45 23.0r 06CH69 G83 C~4twh 2018 04 12.14911 10 03 26.538 +13 45 40.29 22.7r 06CH69 G83 C~4twh 2020 01 04.342480 10 19 14.35 +12 16 59.9 23.1G 06CH69 705 C~3smi 2020 01 04.407530 10 19 14.21 +12 17 00.7 22.8G 06CH69 705 C~3smi 2020 01 04.493410 10 19 13.97 +12 17 02.6 22.7G 06CH69 705 C~3smi 2023 03 18.167650 10 28 34.854 +11 21 06.48 22.9G 06CH69 G37 C~6V3V 2023 03 18.210050 10 28 34.656 +11 21 07.46 06CH69 G37 C~6V3V 2023 03 18.252650 10 28 34.488 +11 21 08.38 06CH69 G37 C~6V3V
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 0.29 0.00 -0.13
2 0.0002 0.00 0.24 0.00 0.04
3 0.0003 0.00 0.23 0.00 -0.03
4 0.1642 0.00 0.14 0.00 0.09
5 0.1643 0.00 0.04 0.00 0.03
6 0.1644 0.00 0.30 0.00 0.16
7 0.9806 0.00 -0.23 0.00 -0.11
8 0.9884 0.00 -0.49 0.00 -0.05
9 0.9885 0.00 -0.33 0.00 0.03
10 0.9886 0.00 -0.38 0.00 0.09
11 1.7828 0.00 0.21 0.00 0.01
12 1.7856 0.00 0.13 0.00 0.07
13 2.0101 0.00 0.09 0.00 -0.05
14 2.0102 0.00 -0.08 0.00 -0.02
15 2.0103 0.00 0.01 0.00 -0.27
16 2.0128 0.00 -0.13 0.00 -0.50
17 3.2249 0.00 -0.07 0.00 0.12
18 3.2249 0.00 -0.12 0.00 -0.03
19 3.2275 0.00 -0.09 0.00 0.09
20 3.2275 0.00 -0.13 0.00 0.12
21 8.0844 0.00 0.03 0.00 0.26
22 8.0846 0.00 0.05 0.00 0.24
23 13.1659 0.00 -0.24 0.00 0.27
24 13.1659 0.00 0.88 0.00 0.02
25 14.8968 0.00 -0.28 0.00 -0.06
26 14.8970 0.00 0.23 0.00 -0.35
27 14.8972 0.00 0.09 0.00 0.12
28 18.0968 0.00 0.07 0.00 -0.06
29 18.0970 0.00 -0.28 0.00 -0.04
30 18.0971 0.00 -0.17 0.00 -0.07
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.
06CH69 quality flag:3 Type: CLASSICAL CLASSICAL CLASSICAL axisobj 45.811 45.811 45.811 ecceobj 0.039 0.039 0.039 incobj 1.790 1.790 1.790 qmin 43.157 43.156 43.159 qmax 48.637 48.665 48.650 amean 45.815 45.815 45.815 amin 45.452 45.451 45.454 amax 46.185 46.185 46.184 emean 0.041 0.041 0.041 emin 0.028 0.028 0.028 emax 0.054 0.054 0.054 imean 1.584 1.584 1.584 imin 1.192 1.192 1.192 imax 1.945 1.945 1.945 excite_mean 0.050 0.050 0.050 fracstop 1.000 1.000 1.000 cjmean 3.121 3.121 3.121 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 154.2 154.3 154.3 kozaiamp 180.0 180.0 180.0