Orbit Fit and Astrometric record for 04KF19

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: 04KF19    
# Created Fri Oct 20 01:37:33 2017
# Orbit generated from Bernstein formalism
# Fitting   22 observations of   22
# Arc:  12.04y
# First observation: 2004/05/24
#  Last observation: 2016/06/08
Preliminary a, adot, b, bdot, g, gdot:
  -0.000609   0.025707  -0.000001  -0.000008   0.026933   0.000000
# Chi-squared of fit:    16.65 DOF:   38 RMS:  0.15
# Min/Max residuals:    -0.33    0.30
# Exact a, adot, b, bdot, g, gdot:
  1.728921E-05  2.486723E-02 -7.685710E-07 -7.543499E-06  2.472114E-02 -5.912134E-04
# Covariance matrix:
  1.7517E-13 -7.5915E-14 -3.7083E-17  1.8922E-17  7.4514E-14 -2.0853E-13
 -7.5915E-14  1.0921E-13 -1.4464E-17 -3.2213E-17  2.0301E-13  3.2865E-13
 -3.7083E-17 -1.4464E-17  1.0071E-13 -1.1985E-14 -2.8347E-16 -3.4218E-17
  1.8922E-17 -3.2213E-17 -1.1985E-14  4.1440E-15 -6.6028E-17 -1.0060E-16
  7.4514E-14  2.0301E-13 -2.8347E-16 -6.6028E-17  1.4951E-12  5.8743E-13
 -2.0853E-13  3.2865E-13 -3.4218E-17 -1.0060E-16  5.8743E-13  1.0301E-12
#      lat0       lon0       xBary       yBary       zBary        JD0
   -0.109652 -131.782137   -0.270359   -0.001816   -0.976017  2453149.856713
# Heliocentric elements and errors
Epoch:              2453140.5000  =  2004/05/15
Mean Anomaly:          347.92207 +/-     0.033
Argument of Peri:      276.41487 +/-     0.087
Long of Asc Node:      325.93732 +/-     0.079
Inclination:             0.10795 +/-     0.000
Eccentricity:         0.06608443 +/-    0.0001
Semi-Major Axis:     44.28189617 +/-    0.0090
Time of Perihelion: 2456751.5018 +/-       9.9
Perihelion:          41.35555219 +/-    0.0106
Aphelion:            47.20824014 +/-    0.0115
Period (y)              294.6779 +/-      0.09
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -27.40471809 +/-    0.0013
Ecliptic Y          -31.07029572 +/-    0.0015
Ecliptic Z           -0.07741728 +/-    0.0000
Ecliptic XDOT         0.00209459 +/-    0.0000
Ecliptic YDOT        -0.00179315 +/-    0.0000
Ecliptic ZDOT        -0.00000059 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   41.42931140 +/-    0.0014
Geocenter to KBO     40.45121164 +/-    0.0020
# Hcoef:  7.12

The following table shows the complete astrometric record for 04KF19. 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 (04KF19) followed by the observatory code and reference code for the source of the astrometry.

2004 05  24.35597  15 02 54.11   -17 21 35.3   23.4g 04KF19    568  C~0VDq      
2004 05  24.37910  15 02 54.00   -17 21 34.9   23.0g 04KF19    568  C~0VDq      
2004 05  24.40347  15 02 53.88   -17 21 34.4   23.3g 04KF19    568  C~0VDq      
2004 05  25.36486  15 02 49.44   -17 21 16.0         04KF19    568  C~0VDq      
2004 06  10.27217  15 01 40.21   -17 16 27.7   22.4i 04KF19    568  C~0VDq      
2004 06  10.33739  15 01 39.95   -17 16 26.7   22.5i 04KF19    568  C~0VDq      
2004 06  10.40819  15 01 39.66   -17 16 25.3   22.6i 04KF19    568  C~0VDq      
2005 05  14.38273  15 09 29.14   -17 48 23.6   22.7r 04KF19    568  C~0VDq      
2005 05  14.41646  15 09 28.97   -17 48 22.9   22.6r 04KF19    568  C~0VDq      
2005 05  14.45529  15 09 28.76   -17 48 22.2   22.7r 04KF19    568  C~0VDq      
2005 05  17.35241  15 09 14.63   -17 47 25.3   22.7r 04KF19    568  C~0VDq      
2006 06  30.27387  15 12 00.66   -17 58 22.7   23.5r 04KF19    568  C~0VDq      
2006 06  30.27625  15 12 00.66   -17 58 22.6   23.8r 04KF19    568  C~0VDq      
2006 06  30.28067  15 12 00.63   -17 58 22.8   23.5r 04KF19    568  C~0VDq      
2006 06  30.28494  15 12 00.62   -17 58 22.7   23.4r 04KF19    568  C~0VDq      
2006 07  01.29568  15 11 57.69   -17 58 10.9   22.8r 04KF19    568  C~0VDq      
2006 07  01.30878  15 11 57.64   -17 58 11.0   23.0r 04KF19    568  C~0VDq      
2008 06  07.07036  15 25 03.42   -18 47 57.2         04KF19    807  C~0VDq      
2008 06  07.26990  15 25 02.50   -18 47 54.1         04KF19    807  C~0VDq      
2016 06  08.18295  16 12 32.583  -21 15 23.08  22.7R 04KF19    G37              
2016 06  08.22140  16 12 32.395  -21 15 22.62        04KF19    G37              
2016 06  08.26320  16 12 32.207  -21 15 21.93        04KF19    G37              

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    -0.29       0.00     0.16
  2   0.0001     -1.62    -0.27      -0.05     0.11
  3   0.0001     -3.41    -0.33      -0.05     0.12
  4   0.0028    -69.59     0.30      -0.03     0.09
  5   0.0463  -1102.06     0.16       0.76    -0.09
  6   0.0465  -1105.92     0.27       0.68    -0.15
  7   0.0467  -1110.30     0.18       0.86     0.05
  8   0.9720   5874.66     0.13      -1.87    -0.09
  9   0.9721   5872.13     0.09      -1.85    -0.06
 10   0.9722   5869.05    -0.11      -1.99    -0.18
 11   0.9801   5659.22     0.05      -1.58     0.16
 12   2.0997   8121.61    -0.06      -0.07     0.04
 13   2.0997   8121.59     0.02       0.03     0.14
 14   2.0997   8121.23    -0.14      -0.28    -0.17
 15   2.0997   8121.06    -0.11      -0.22    -0.11
 16   2.1025   8077.56     0.03       0.03     0.02
 17   2.1025   8076.89    -0.06      -0.26    -0.26
 18   4.0375  19709.04     0.12      -5.46     0.22
 19   4.0381  19695.50     0.03      -5.71    -0.01
 20  12.0406  62572.73    -0.17     -18.77    -0.07
 21  12.0407  62569.81    -0.08     -18.79    -0.08
 22  12.0408  62566.85     0.24     -18.57     0.15

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.

04KF19    quality flag:3

Type:      CLASSICAL CLASSICAL CLASSICAL

axisobj        43.849    43.875    43.823
ecceobj         0.058     0.059     0.058
incobj          0.108     0.108     0.108
qmin           40.814    40.792    40.779
qmax           47.837    47.842    47.746
amean          44.182    44.209    44.156
amin           43.839    43.863    43.805
amax           44.556    44.575    44.521
emean           0.058     0.058     0.057
emin            0.041     0.042     0.040
emax            0.074     0.074     0.073
imean           1.963     1.962     1.964
imin            1.254     1.255     1.251
imax            2.534     2.544     2.525
excite_mean     0.067     0.068     0.067
fracstop        1.000     1.000     1.000
cjmean          3.098     3.098     3.098

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       167.3     167.1     167.5
kozaiamp        180.0     180.0     180.0