Orbit Fit and Astrometric record for 04KC19

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: 04KC19    
# Created Thu Oct 19 01:37:30 2017
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting   19 observations of   19
# Arc:  12.01y
# First observation: 2004/05/24
#  Last observation: 2016/05/29
# Chi-squared of fit:   144.32 DOF:   32 RMS:  0.49
# Min/Max residuals:    -2.13    0.42
# Exact a, adot, b, bdot, g, gdot:
  1.969845E-05  4.309524E-02  1.616584E-06  4.189011E-03  3.420232E-02 -2.680014E-03
# Covariance matrix:
  3.1592E-13 -2.4129E-13  2.5505E-14 -2.1222E-14  1.0403E-12 -3.8670E-13
 -2.4129E-13  3.5690E-13 -4.0285E-14  3.3597E-14 -1.9343E-12  6.1281E-13
  2.5505E-14 -4.0285E-14  1.6311E-13 -2.3831E-14  2.2054E-13 -7.0275E-14
 -2.1222E-14  3.3597E-14 -2.3831E-14  8.7963E-15 -1.8440E-13  5.8605E-14
  1.0403E-12 -1.9343E-12  2.2054E-13 -1.8440E-13  1.2411E-11 -3.3673E-12
 -3.8670E-13  6.1281E-13 -7.0275E-14  5.8605E-14 -3.3673E-12  1.0690E-12
#      lat0       lon0       xBary       yBary       zBary        JD0
   -0.968124 -129.368325   -0.229130   -0.016617   -0.986375  2453149.863713
# Heliocentric elements and errors
Epoch:              2453150.5000  =  2004/05/25
Mean Anomaly:          350.62105 +/-   103.400
Argument of Peri:        6.06359 +/-     0.005
Long of Asc Node:      240.59060 +/-     0.000
Inclination:             5.63674 +/-     0.000
Eccentricity:         0.23861108 +/-    0.0011
Semi-Major Axis:     39.41538561 +/-    0.1010
Time of Perihelion: 2455505.2721 +/-   25962.8
Perihelion:          30.01043793 +/-    0.0876
Aphelion:            48.82033330 +/-    0.1320
Period (y)              247.4611 +/-      0.95
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -18.99506529 +/-    0.0031
Ecliptic Y          -23.50653863 +/-    0.0037
Ecliptic Z           -0.49392881 +/-    0.0001
Ecliptic XDOT         0.00279671 +/-    0.0000
Ecliptic YDOT        -0.00203369 +/-    0.0000
Ecliptic ZDOT         0.00033902 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   30.22607606 +/-    0.0035
Geocenter to KBO     29.23785074 +/-    0.0049
# Hcoef:  8.48

The following table shows the complete astrometric record for 04KC19. 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 (04KC19) followed by the observatory code and reference code for the source of the astrometry.

2004 05  24.36297  15 11 41.57   -18 50 34.2   22.9g 04KC19    568  C~0Uqx      
2004 05  24.38613  15 11 41.42   -18 50 33.6   22.9g 04KC19    568  C~0Uqx      
2004 05  24.41052  15 11 41.26   -18 50 32.9   22.7g 04KC19    568  C~0Uqx      
2004 05  25.37186  15 11 35.28   -18 50 06.8         04KC19    568  C~0Uqx      
2004 06  10.29553  15 10 02.52   -18 43 09.6   22.7i 04KC19    568  C~0Uqx      
2004 06  10.42945  15 10 01.79   -18 43 06.5   23.1i 04KC19    568  C~0Uqx      
2005 05  14.39397  15 23 11.09   -19 19 42.4   23.2r 04KC19    568  C~0Uqx      
2005 05  14.42769  15 23 10.85   -19 19 41.4   23.1r 04KC19    568  C~0Uqx      
2005 05  14.46641  15 23 10.60   -19 19 40.5   23.0r 04KC19    568  C~0Uqx      
2005 05  17.36867  15 22 51.73   -19 18 23.7   22.9r 04KC19    568  C~0Uqx      
2008 05  03.37228  15 56 05.13   -20 23 43.3         04KC19    695  C~0Uqx      
2008 05  03.42507  15 56 04.78   -20 23 42.0         04KC19    695  C~0Uqx      
2008 05  03.42677  15 56 04.79   -20 23 42.1         04KC19    695  C~0Uqx      
2008 05  04.36040  15 55 58.96   -20 23 22.7         04KC19    695  C~0Uqx      
2008 05  07.47995  15 55 39.20   -20 22 16.5   23.0r 04KC19    568  C~0Uqx      
2008 05  07.50307  15 55 39.04   -20 22 16.1   22.9r 04KC19    568  C~0Uqx      
2008 05  07.52626  15 55 38.89   -20 22 15.6   22.9r 04KC19    568  C~0Uqx      
2016 05  29.36583  17 19 16.594  -21 09 11.76  22.9R 04KC19    G37              
2016 05  29.42761  17 19 16.190  -21 09 10.80        04KC19    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    -0.28       0.00     0.42
  2   0.0001      0.00     0.10       0.00    -0.00
  3   0.0001      0.00     0.03       0.00     0.03
  4   0.0028      0.00     0.06       0.00    -0.19
  5   0.0464      0.00     0.01       0.00     0.06
  6   0.0467      0.00     0.04       0.00    -0.15
  7   0.9720      0.00     0.16       0.00    -0.00
  8   0.9721      0.00    -0.08       0.00     0.11
  9   0.9722      0.00     0.03       0.00    -0.02
 10   0.9802      0.00     0.17       0.00    -0.01
 11   3.9425      0.00     0.07       0.00    -0.09
 12   3.9427      0.00    -0.16       0.00     0.10
 13   3.9427      0.00     0.15       0.00    -0.03
 14   3.9452      0.00     0.12       0.00    -0.11
 15   3.9538      0.00     0.18       0.00     0.06
 16   3.9538      0.00     0.05       0.00    -0.04
 17   3.9539      0.00     0.06       0.00    -0.04
 18  12.0137      0.00    -2.13       0.00    -0.22
 19  12.0139      0.00    -1.99       0.00     0.13

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.

04KC19    quality flag:3

Type:           3:2E      3:2E      3:2E

axisobj        38.997    38.996    38.997
ecceobj         0.232     0.232     0.232
incobj          5.651     5.651     5.651
qmin           29.415    29.415    29.414
qmax           50.058    50.062    50.055
amean          39.455    39.456    39.456
amin           38.996    38.996    38.997
amax           39.975    39.979    39.975
emean           0.218     0.218     0.218
emin            0.187     0.187     0.186
emax            0.254     0.254     0.254
imean           8.913     8.913     8.913
imin            6.780     6.780     6.780
imax           10.181    10.185    10.178
excite_mean     0.268     0.268     0.268
fracstop        1.000     1.000     1.000
cjmean          2.970     2.970     2.970

libcent 0       179.8     180.1     179.0
libamp  0        86.1      86.0      85.3
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       200.0     199.8     199.9
kozaiamp        180.0     180.0     180.0