Orbit Fit and Astrometric record for 06CH69

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 Wed Nov 14 02:08:50 2018
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting   22 observations of   22
# Arc:   8.08y
# First observation: 2005/02/10
#  Last observation: 2013/03/13
# Chi-squared of fit:    21.92 DOF:   38 RMS:  0.18
# Min/Max residuals:    -0.52    0.24
# Exact a, adot, b, bdot, g, gdot:
  1.421538E-05  2.219597E-02 -1.556237E-08 -1.978224E-05  2.310866E-02  2.764496E-04
# Covariance matrix:
  2.0458E-13 -1.1571E-13 -8.0679E-18  2.0540E-16 -9.0564E-16 -5.4177E-13
 -1.1571E-13  1.1651E-13  3.2509E-16 -1.9931E-16  3.8367E-14  6.2134E-13
 -8.0679E-18  3.2509E-16  1.2581E-13 -2.8268E-14  2.0654E-15  1.1619E-15
  2.0540E-16 -1.9931E-16 -2.8268E-14  1.3734E-14  1.8496E-16 -1.3122E-15
 -9.0564E-16  3.8367E-14  2.0654E-15  1.8496E-16  2.4410E-13  1.3699E-13
 -5.4177E-13  6.2134E-13  1.1619E-15 -1.3122E-15  1.3699E-13  3.7957E-12
#      lat0       lon0       xBary       yBary       zBary        JD0
    1.830395  132.620484   -0.150528    0.031159   -0.971450  2453411.796653
# Heliocentric elements and errors
Epoch:              2453412.5000  =  2005/02/11
Mean Anomaly:           19.29867 +/-     0.104
Argument of Peri:       70.74450 +/-     0.114
Long of Asc Node:       41.16432 +/-     0.010
Inclination:             1.79080 +/-     0.000
Eccentricity:         0.04059855 +/-    0.0001
Semi-Major Axis:     46.00241353 +/-    0.0041
Time of Perihelion: 2447303.1610 +/-      33.0
Perihelion:          44.13478213 +/-    0.0053
Aphelion:            47.87004492 +/-    0.0056
Period (y)              312.0176 +/-      0.04
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -30.06112502 +/-    0.0006
Ecliptic Y           32.43989138 +/-    0.0007
Ecliptic Z            1.38219997 +/-    0.0000
Ecliptic XDOT        -0.00195749 +/-    0.0000
Ecliptic YDOT        -0.00176373 +/-    0.0000
Ecliptic ZDOT        -0.00000123 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   44.24847405 +/-    0.0007
Geocenter to KBO     43.27385156 +/-    0.0009
# Hcoef:  6.83

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      

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     0.20       0.00    -0.06
  2   0.0002      0.00     0.16       0.00     0.11
  3   0.0003      0.00     0.14       0.00     0.05
  4   0.1642      0.00     0.08       0.00     0.16
  5   0.1643      0.00    -0.02       0.00     0.09
  6   0.1644      0.00     0.24       0.00     0.23
  7   0.9806      0.00    -0.24       0.00    -0.08
  8   0.9884      0.00    -0.49       0.00    -0.02
  9   0.9885      0.00    -0.33       0.00     0.06
 10   0.9886      0.00    -0.38       0.00     0.12
 11   1.7828      0.00     0.22       0.00     0.01
 12   1.7856      0.00     0.15       0.00     0.07
 13   2.0101      0.00     0.14       0.00    -0.07
 14   2.0102      0.00    -0.02       0.00    -0.04
 15   2.0103      0.00     0.07       0.00    -0.29
 16   2.0128      0.00    -0.07       0.00    -0.52
 17   3.2249      0.00     0.06       0.00     0.05
 18   3.2249      0.00     0.01       0.00    -0.11
 19   3.2275      0.00     0.04       0.00     0.02
 20   3.2275      0.00     0.00       0.00     0.05
 21   8.0844      0.00     0.00       0.00     0.10
 22   8.0846      0.00     0.02       0.00     0.08

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        45.809    45.809    45.809
ecceobj         0.039     0.039     0.039
incobj          1.790     1.790     1.790
qmin           43.171    43.181    43.166
qmax           48.672    48.678    48.661
amean          45.813    45.813    45.813
amin           45.441    45.441    45.443
amax           46.197    46.197    46.193
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            1.944     1.944     1.944
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       154.5     154.5     154.5
kozaiamp        179.9     180.0     180.0