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 Tue Nov 30 02:10:17 2021
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting     20 observations of     20
# Arc:  15.02y
# First observation: 2005/02/10
#  Last observation: 2020/02/18
# Chi-squared of fit:    12.93 DOF:     34 RMS:  0.14
# Min/Max residuals:    -0.47    0.21
# Exact a, adot, b, bdot, g, gdot:
  1.812463E-05  3.300513E-02 -7.144020E-07  2.042124E-04  2.994427E-02  8.504382E-04
# Covariance matrix:
  1.7413E-13 -4.0550E-14  2.6030E-16 -1.9187E-16  1.0994E-13 -5.9225E-14
 -4.0550E-14  3.8747E-14 -2.2397E-16  2.2736E-16  4.5674E-14  7.0820E-14
  2.6030E-16 -2.2397E-16  1.1747E-13 -1.0363E-14  6.8238E-17 -4.3658E-16
 -1.9187E-16  2.2736E-16 -1.0363E-14  2.3088E-15  2.6858E-16  4.4193E-16
  1.0994E-13  4.5674E-14  6.8238E-17  2.6858E-16  7.4709E-13  8.6180E-14
 -5.9225E-14  7.0820E-14 -4.3658E-16  4.4193E-16  8.6180E-14  1.3765E-13
#      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:           20.84007 +/-     0.027
Argument of Peri:        5.10531 +/-     0.032
Long of Asc Node:      109.70169 +/-     0.007
Inclination:             0.40596 +/-     0.000
Eccentricity:         0.06764559 +/-    0.0001
Semi-Major Axis:     36.67622090 +/-    0.0045
Time of Perihelion: 2448716.0249 +/-       6.2
Perihelion:          34.19523640 +/-    0.0051
Aphelion:            39.15720540 +/-    0.0056
Period (y)              222.1187 +/-      0.04
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -25.80327713 +/-    0.0007
Ecliptic Y           22.72058614 +/-    0.0006
Ecliptic Z            0.11785339 +/-    0.0000
Ecliptic XDOT        -0.00205617 +/-    0.0000
Ecliptic YDOT        -0.00221751 +/-    0.0000
Ecliptic ZDOT         0.00001901 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   34.38091050 +/-    0.0007
Geocenter to KBO     33.39538448 +/-    0.0010
# Hcoef:  8.34

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      
2020 02  18.267130 11 09 57.227  +05 44 26.57  23.9G 05CF81    G37  C~3iN7      
2020 02  18.358330 11 09 56.750  +05 44 29.48        05CF81    G37  C~3iN7      
2020 02  18.409330 11 09 56.489  +05 44 31.15        05CF81    G37  C~3iN7      

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    -0.09       0.00     0.21
     2   0.0002      0.00    -0.04       0.00     0.20
     3   0.0003      0.00    -0.11       0.00     0.21
     4   0.1669      0.00     0.16       0.00     0.14
     5   0.1671      0.00     0.07       0.00    -0.10
     6   0.1672      0.00    -0.05       0.00     0.08
     7   0.9806      0.00    -0.28       0.00    -0.47
     8   0.9884      0.00    -0.03       0.00    -0.17
     9   0.9885      0.00    -0.01       0.00    -0.24
    10   0.9886      0.00    -0.12       0.00    -0.01
    11   2.0100      0.00     0.06       0.00    -0.14
    12   2.0101      0.00     0.20       0.00     0.08
    13   2.0102      0.00     0.11       0.00     0.03
    14   2.0128      0.00     0.14       0.00    -0.02
    15   8.0847      0.00    -0.02       0.00     0.01
    16   8.0874      0.00    -0.07       0.00     0.15
    17   8.0878      0.00     0.01       0.00     0.18
    18  15.0197      0.00     0.06       0.00    -0.03
    19  15.0200      0.00    -0.04       0.00    -0.06
    20  15.0201      0.00    -0.01       0.00    -0.03

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        36.508    36.508    36.508
ecceobj         0.065     0.065     0.065
incobj          0.406     0.406     0.406
qmin           33.567    33.566    33.567
qmax           39.638    39.637    39.640
amean          36.487    36.487    36.487
amin           36.188    36.188    36.188
amax           36.810    36.810    36.810
emean           0.058     0.058     0.058
emin            0.038     0.038     0.038
emax            0.078     0.078     0.078
imean           2.374     2.374     2.374
imin            0.268     0.268     0.268
imax            3.683     3.683     3.683
excite_mean     0.073     0.073     0.073
fracstop        1.000     1.000     1.000
cjmean          3.021     3.021     3.021

libcent 0       179.9     179.8     180.0
libamp  0        47.1      47.1      47.0
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       180.5     180.5     180.5
kozaiamp        180.0     180.0     180.0