Orbit Fit and Astrometric record for 07CQ79

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: 07CQ79    
# Created Tue Dec 12 02:37:32 2017
# Orbit generated from Bernstein formalism
# Fitting   20 observations of   20
# Arc:   8.08y
# First observation: 2005/02/10
#  Last observation: 2013/03/13
Preliminary a, adot, b, bdot, g, gdot:
  -0.000513   0.020876   0.000002  -0.000312   0.021181   0.000000
# Chi-squared of fit:    20.54 DOF:   34 RMS:  0.18
# Min/Max residuals:    -0.48    0.35
# Exact a, adot, b, bdot, g, gdot:
  1.360534E-05  2.056542E-02 -1.138828E-06 -3.069792E-04  2.230357E-02 -1.642808E-03
# Covariance matrix:
  2.8167E-13 -2.0398E-13 -1.7618E-15  2.9123E-15  1.5702E-13 -1.1250E-12
 -2.0398E-13  2.2282E-13  2.2390E-15 -3.4204E-15 -1.2760E-13  1.3222E-12
 -1.7618E-15  2.2390E-15  1.2332E-13 -2.6215E-14 -4.0439E-16  1.4151E-14
  2.9123E-15 -3.4204E-15 -2.6215E-14  1.3805E-14  2.1111E-15 -2.1632E-14
  1.5702E-13 -1.2760E-13 -4.0439E-16  2.1111E-15  4.0578E-13 -8.1032E-13
 -1.1250E-12  1.3222E-12  1.4151E-14 -2.1632E-14 -8.1032E-13  8.3622E-12
#      lat0       lon0       xBary       yBary       zBary        JD0
    0.833240  133.084570   -0.142679    0.014265   -0.973028  2453411.798283
# Heliocentric elements and errors
Epoch:              2453410.5000  =  2005/02/09
Mean Anomaly:          272.60008 +/-     0.090
Argument of Peri:      232.68992 +/-     0.074
Long of Asc Node:      356.93627 +/-     0.010
Inclination:             1.18083 +/-     0.000
Eccentricity:         0.07831953 +/-    0.0001
Semi-Major Axis:     45.69463138 +/-    0.0057
Time of Perihelion: 2480801.2996 +/-      27.9
Perihelion:          42.11584910 +/-    0.0083
Aphelion:            49.27341365 +/-    0.0089
Period (y)              308.8915 +/-      0.06
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -31.39680462 +/-    0.0009
Ecliptic Y           33.35509920 +/-    0.0009
Ecliptic Z            0.65195616 +/-    0.0000
Ecliptic XDOT        -0.00170657 +/-    0.0000
Ecliptic YDOT        -0.00187847 +/-    0.0000
Ecliptic ZDOT        -0.00004054 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   45.81208389 +/-    0.0009
Geocenter to KBO     44.83586550 +/-    0.0013
# Hcoef:  7.08

The following table shows the complete astrometric record for 07CQ79. 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 (07CQ79) followed by the observatory code and reference code for the source of the astrometry.

2005 02  10.29754  09 03 11.68   +17 41 15.3   24.3g 07CQ79    568  C~0VEU      
2005 02  10.38053  09 03 11.29   +17 41 17.0   24.0g 07CQ79    568  C~0VEU      
2005 02  10.41998  09 03 11.09   +17 41 17.4   24.6g 07CQ79    568  C~0VEU      
2005 02  15.31900  09 02 48.98   +17 42 49.6   23.7g 07CQ79    568  C~0VEU      
2005 04  11.28431  08 59 57.42   +17 54 01.8   23.1i 07CQ79    568  C~0VEU      
2005 04  11.31026  08 59 57.38   +17 54 01.9   23.2i 07CQ79    568  C~0VEU      
2005 04  11.33986  08 59 57.35   +17 54 02.1   23.3i 07CQ79    568  C~0VEU      
2006 03  02.21268  09 06 29.99   +17 25 47.3   23.1R 07CQ79    695  C~0VX4      
2006 03  02.26884  09 06 29.76   +17 25 48.4         07CQ79    695  C~0VX4      
2006 03  02.32534  09 06 29.54   +17 25 49.5         07CQ79    695  C~0VX4      
2007 02  14.44934  09 12 21.71   +16 59 06.3         07CQ79    568  C74770      
2007 02  14.48688  09 12 21.55   +16 59 07.2         07CQ79    568  C74770      
2007 02  14.52049  09 12 21.40   +16 59 07.7         07CQ79    568  C74770      
2007 02  15.46372  09 12 17.15   +16 59 26.5         07CQ79    568  C74770      
2007 02  21.34561  09 11 51.03   +17 01 19.1   23.2R 07CQ79    675  C~0VEU      
2007 02  21.39879  09 11 50.79   +17 01 20.1   23.2R 07CQ79    675  C~0VEU      
2007 11  08.49501  09 21 29.97   +16 15 40.4   22.2r 07CQ79    695  C~0VEU      
2007 11  09.47327  09 21 30.82   +16 15 37.5   21.9r 07CQ79    695  C~0VEU      
2013 03  13.13379  09 38 37.95   +14 47 37.7   23.3R 07CQ79    G37  C~0qSl      
2013 03  13.18756  09 38 37.73   +14 47 38.6         07CQ79    G37  C~0qSl      

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     0.19
  2   0.0002     -5.83     0.09       0.04     0.27
  3   0.0003     -8.68    -0.05      -0.39    -0.14
  4   0.0137   -337.80    -0.34      -2.04     0.07
  5   0.1642  -2878.18     0.12     -50.41     0.09
  6   0.1643  -2878.75     0.03     -50.47     0.06
  7   0.1644  -2879.22     0.10     -50.40     0.18
  8   1.0538   2983.31    -0.10     -74.13    -0.48
  9   1.0540   2979.84    -0.16     -74.03    -0.32
 10   1.0541   2976.50    -0.07     -73.89    -0.12
 11   2.0100   8275.08     0.00    -128.32     0.04
 12   2.0101   8272.61     0.12    -128.14     0.25
 13   2.0102   8270.41     0.22    -128.30     0.11
 14   2.0128   8206.50     0.09    -128.42     0.35
 15   2.0289   7814.71    -0.11    -131.87    -0.28
 16   2.0290   7811.12    -0.18    -131.93    -0.29
 17   2.7411  16605.53    -0.09    -232.42    -0.11
 18   2.7438  16618.15     0.12    -231.42     0.04
 19   8.0844  32601.98     0.07    -534.91     0.12
 20   8.0846  32598.58    -0.08    -535.10    -0.02

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.

07CQ79    quality flag:3

Type:      CLASSICAL CLASSICAL CLASSICAL

axisobj        45.458    45.475    45.441
ecceobj         0.073     0.073     0.074
incobj          1.185     1.185     1.185
qmin           41.401    41.452    41.353
qmax           49.844    49.869    49.811
amean          45.504    45.520    45.472
amin           45.131    45.151    45.097
amax           45.885    45.913    45.866
emean           0.073     0.072     0.073
emin            0.059     0.059     0.060
emax            0.086     0.086     0.087
imean           2.274     2.273     2.275
imin            1.762     1.764     1.755
imax            2.680     2.677     2.688
excite_mean     0.083     0.083     0.083
fracstop        1.000     1.000     1.000
cjmean          3.111     3.112     3.111

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       181.9     183.0     181.3
kozaiamp        179.9     179.9     180.0