Orbit Fit and Astrometric record for 07CR79

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: 07CR79    
# Created Fri Oct 20 01:37:44 2017
# Orbit generated from Bernstein formalism
# Fitting   18 observations of   18
# Arc:  10.02y
# First observation: 2005/02/10
#  Last observation: 2015/02/18
Preliminary a, adot, b, bdot, g, gdot:
  -0.001624   0.030188  -0.000631   0.012105   0.027089   0.000000
# Chi-squared of fit:    11.83 DOF:   30 RMS:  0.14
# Min/Max residuals:    -0.22    0.35
# Exact a, adot, b, bdot, g, gdot:
  1.583776E-05  2.954531E-02  5.560555E-06  1.183571E-02  2.785923E-02  5.749120E-04
# Covariance matrix:
  2.5320E-13 -1.0626E-13  3.6948E-14 -3.4166E-14  6.0932E-14 -2.7068E-13
 -1.0626E-13  8.8653E-14 -3.4729E-14  3.3231E-14  5.8005E-15  2.6346E-13
  3.6948E-14 -3.4729E-14  1.6259E-13 -3.5387E-14  8.7083E-16 -1.1177E-13
 -3.4166E-14  3.3231E-14 -3.5387E-14  2.0418E-14  3.8255E-15  1.0716E-13
  6.0932E-14  5.8005E-15  8.7083E-16  3.8255E-15  2.6283E-13  3.1082E-14
 -2.7068E-13  2.6346E-13 -1.1177E-13  1.0716E-13  3.1082E-14  8.4966E-13
#      lat0       lon0       xBary       yBary       zBary        JD0
    1.392795  136.524240   -0.084238    0.023932   -0.979634  2453411.809733
# Heliocentric elements and errors
Epoch:              2453410.5000  =  2005/02/09
Mean Anomaly:            3.56906 +/-     0.005
Argument of Peri:      357.86544 +/-     0.009
Long of Asc Node:      133.27404 +/-     0.000
Inclination:            21.83593 +/-     0.000
Eccentricity:         0.22423049 +/-    0.0001
Semi-Major Axis:     47.49253254 +/-    0.0051
Time of Perihelion: 2452225.3110 +/-       1.7
Perihelion:          36.84325853 +/-    0.0052
Aphelion:            58.14180655 +/-    0.0071
Period (y)              327.3001 +/-      0.05
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -26.81364080 +/-    0.0005
Ecliptic Y           25.30269529 +/-    0.0005
Ecliptic Z            0.87266595 +/-    0.0000
Ecliptic XDOT        -0.00201843 +/-    0.0000
Ecliptic YDOT        -0.00209478 +/-    0.0000
Ecliptic ZDOT         0.00116424 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   36.87762558 +/-    0.0005
Geocenter to KBO     35.89474164 +/-    0.0007
# Hcoef:  7.66

The following table shows the complete astrometric record for 07CR79. 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 (07CR79) followed by the observatory code and reference code for the source of the astrometry.

2005 02  10.30899  09 17 40.05   +17 12 43.5   23.4g 07CR79    568  C~0VEU      
2005 02  10.39196  09 17 39.59   +17 12 45.9   23.5g 07CR79    568  C~0VEU      
2005 02  10.43152  09 17 39.36   +17 12 47.3   23.4g 07CR79    568  C~0VEU      
2005 04  11.30482  09 13 43.08   +17 36 02.0   23.3i 07CR79    568  C~0VEU      
2005 04  11.33442  09 13 43.03   +17 36 02.4   23.3i 07CR79    568  C~0VEU      
2005 04  11.35929  09 13 42.99   +17 36 02.7   23.4i 07CR79    568  C~0VEU      
2007 02  14.45798  09 32 35.01   +17 28 40.4   23.0r 07CR79    568  C74770      
2007 02  14.49571  09 32 34.80   +17 28 41.6   23.0r 07CR79    568  C74770      
2007 02  14.52893  09 32 34.63   +17 28 42.7   23.0r 07CR79    568  C74770      
2007 02  15.47269  09 32 29.57   +17 29 13.3   23.1r 07CR79    568  C74770      
2007 11  08.51341  09 44 29.36   +16 55 10.2   22.0r 07CR79    695  C~0VEU      
2007 11  09.49094  09 44 31.29   +16 55 12.8   22.1r 07CR79    695  C~0VEU      
2008 05  04.16494  09 35 54.96   +17 59 00.0         07CR79    695  C~0VEU      
2008 05  05.13645  09 35 55.33   +17 58 59.5         07CR79    695  C~0VEU      
2008 05  05.13952  09 35 55.31   +17 58 59.2         07CR79    695  C~0VEU      
2015 02  18.26506  10 32 34.73   +17 44 04.9   22.3R 07CR79    695  C~1M6T      
2015 02  18.35525  10 32 34.26   +17 44 08.4         07CR79    695  C~1M6T      
2015 02  18.44818  10 32 33.78   +17 44 11.7         07CR79    695  C~1M6T      

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     0.19       0.00     0.24
  2   0.0002     -7.01     0.19       0.30     0.01
  3   0.0003    -10.57    -0.03       0.63     0.11
  4   0.1643  -3655.39    -0.05     317.59    -0.20
  5   0.1643  -3656.19    -0.09     317.76    -0.15
  6   0.1644  -3656.82    -0.09     317.88    -0.12
  7   2.0100  11894.05    -0.04    4905.83    -0.12
  8   2.0101  11890.81    -0.09    4906.00    -0.16
  9   2.0102  11888.14     0.05    4906.26    -0.08
 10   2.0128  11809.48    -0.16    4911.99    -0.00
 11   2.7411  22302.12     0.02    6379.68     0.15
 12   2.7438  22327.68    -0.06    6391.52     0.35
 13   3.2275  14022.31    -0.17    7559.95    -0.22
 14   3.2302  14027.49     0.24    7561.21     0.33
 15   3.2302  14027.32     0.06    7560.83    -0.05
 16  10.0204  61601.12     0.00   24994.11    -0.07
 17  10.0207  61592.85    -0.05   24994.56     0.06
 18  10.0209  61584.52     0.07   24994.76    -0.05

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.

07CR79    quality flag:3

Type:       SCATNEAR  SCATNEAR  SCATNEAR

axisobj        47.228    47.243    47.213
ecceobj         0.220     0.220     0.220
incobj         21.878    21.878    21.878
qmin           35.427    35.496    35.440
qmax           59.476    59.541    59.549
amean          47.192    47.222    47.191
amin           46.747    46.787    46.758
amax           47.783    47.761    47.759
emean           0.228     0.229     0.229
emin            0.211     0.211     0.211
emax            0.247     0.247     0.248
imean          20.239    20.235    20.236
imin           19.649    19.613    19.640
imax           20.756    20.796    20.760
excite_mean     0.415     0.415     0.415
fracstop        1.000     1.000     1.000
cjmean          2.926     2.926     2.926

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       168.2     167.9     168.6
kozaiamp        180.0     180.0     180.0