Orbit Fit and Astrometric record for 05CF81

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: 05CF81    
# Created Sat Oct 20 01:08:27 2018
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting   17 observations of   17
# Arc:   8.09y
# First observation: 2005/02/10
#  Last observation: 2013/03/14
# Chi-squared of fit:    11.01 DOF:   28 RMS:  0.14
# Min/Max residuals:    -0.49    0.17
# Exact a, adot, b, bdot, g, gdot:
  1.746745E-05  3.300590E-02 -7.972440E-07  2.042686E-04  2.994335E-02  8.532718E-04
# Covariance matrix:
  3.7052E-13 -2.8479E-13  1.3254E-15 -1.7804E-15  3.4709E-13 -1.0390E-12
 -2.8479E-13  3.4249E-13 -1.5705E-15  2.2169E-15 -2.4925E-13  1.2893E-12
  1.3254E-15 -1.5705E-15  1.3750E-13 -2.3124E-14  1.6722E-15 -6.1732E-15
 -1.7804E-15  2.2169E-15 -2.3124E-14  1.0441E-14 -1.8520E-15  8.6365E-15
  3.4709E-13 -2.4925E-13  1.6722E-15 -1.8520E-15  1.0335E-12 -1.0970E-12
 -1.0390E-12  1.2893E-12 -6.1732E-15  8.6365E-15 -1.0970E-12  5.0260E-12
#      lat0       lon0       xBary       yBary       zBary        JD0
    0.202253  138.546510   -0.049693    0.003581   -0.982280  2453411.814663
# Heliocentric elements and errors
Epoch:              2453412.5000  =  2005/02/11
Mean Anomaly:           20.85235 +/-     0.034
Argument of Peri:        5.07644 +/-     0.042
Long of Asc Node:      109.70832 +/-     0.014
Inclination:             0.40604 +/-     0.000
Eccentricity:         0.06781758 +/-    0.0001
Semi-Major Axis:     36.68325216 +/-    0.0063
Time of Perihelion: 2448711.9058 +/-       7.8
Perihelion:          34.19548263 +/-    0.0077
Aphelion:            39.17102168 +/-    0.0084
Period (y)              222.1826 +/-      0.06
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -25.80403906 +/-    0.0008
Ecliptic Y           22.72128839 +/-    0.0008
Ecliptic Z            0.11785428 +/-    0.0000
Ecliptic XDOT        -0.00205647 +/-    0.0000
Ecliptic YDOT        -0.00221746 +/-    0.0000
Ecliptic ZDOT         0.00001902 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   34.38194637 +/-    0.0008
Geocenter to KBO     33.39642038 +/-    0.0011
# Hcoef:  8.71

The following table shows the complete astrometric record for 05CF81. 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 (05CF81) followed by the observatory code and reference code for the source of the astrometry.

2005 02  10.31392  09 24 10.51   +15 27 37.0   24.2g 05CF81    568  C~0W4f      
2005 02  10.39693  09 24 10.02   +15 27 39.3   24.3g 05CF81    568  C~0W4f      
2005 02  10.43646  09 24 09.78   +15 27 40.4   24.0g 05CF81    568  C~0W4f      
2005 04  12.26433  09 19 45.01   +15 48 08.5   23.4i 05CF81    568  C~0W4f      
2005 04  12.34493  09 19 44.85   +15 48 08.9   23.4i 05CF81    568  C~0W4f      
2005 04  12.37258  09 19 44.79   +15 48 09.3   23.4i 05CF81    568  C~0W4f      
2006 02  03.48337  09 32 19.31   +14 49 21.0         05CF81    568  C~0W4f      
2006 02  06.33546  09 32 02.83   +14 50 42.0   23.5r 05CF81    568  C~0W4f      
2006 02  06.37634  09 32 02.59   +14 50 43.1   23.5r 05CF81    568  C~0W4f      
2006 02  06.41413  09 32 02.36   +14 50 44.4   23.4r 05CF81    568  C~0W4f      
2007 02  14.47529  09 38 41.14   +14 18 45.1         05CF81    568  C~0W4f      
2007 02  14.50923  09 38 40.95   +14 18 46.3         05CF81    568  C~0W4f      
2007 02  14.54231  09 38 40.75   +14 18 47.2         05CF81    568  C~0W4f      
2007 02  15.48615  09 38 35.31   +14 19 14.4         05CF81    568  C~0W4f      
2013 03  13.26626  10 19 26.01   +10 44 42.8   23.3R 05CF81    695  C~0udE      
2013 03  14.22581  10 19 21.06   +10 45 11.0         05CF81    695  C~0udE      
2013 03  14.37616  10 19 20.28   +10 45 15.4         05CF81    695  C~0udE      

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     0.12       0.00     0.16
  2   0.0002      0.00     0.17       0.00     0.15
  3   0.0003      0.00     0.10       0.00     0.16
  4   0.1669      0.00     0.14       0.00     0.16
  5   0.1671      0.00     0.04       0.00    -0.08
  6   0.1672      0.00    -0.08       0.00     0.10
  7   0.9806      0.00    -0.18       0.00    -0.49
  8   0.9884      0.00     0.06       0.00    -0.19
  9   0.9885      0.00     0.07       0.00    -0.26
 10   0.9886      0.00    -0.03       0.00    -0.03
 11   2.0100      0.00     0.01       0.00    -0.13
 12   2.0101      0.00     0.15       0.00     0.09
 13   2.0102      0.00     0.06       0.00     0.05
 14   2.0128      0.00     0.09       0.00    -0.01
 15   8.0847      0.00     0.08       0.00    -0.10
 16   8.0874      0.00     0.02       0.00     0.04
 17   8.0878      0.00     0.10       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.

05CF81    quality flag:3

Type:           4:3E      4:3E      4:3E

axisobj        36.515    36.515    36.515
ecceobj         0.065     0.065     0.065
incobj          0.406     0.406     0.406
qmin           33.618    33.618    33.618
qmax           39.597    39.599    39.595
amean          36.487    36.487    36.487
amin           36.184    36.184    36.184
amax           36.804    36.804    36.804
emean           0.058     0.058     0.058
emin            0.038     0.038     0.038
emax            0.078     0.078     0.077
imean           2.316     2.316     2.316
imin            0.259     0.259     0.258
imax            3.643     3.643     3.643
excite_mean     0.073     0.073     0.073
fracstop        1.000     1.000     1.000
cjmean          3.022     3.022     3.022

libcent 0       180.4     180.4     180.4
libamp  0        51.7      51.7      51.7
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       180.3     180.1     180.5
kozaiamp        180.0     179.9     180.0