Orbit Fit and Astrometric record for 04KE19

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: 04KE19    
# Created Thu Nov 15 02:08:31 2018
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting   22 observations of   22
# Arc:  12.01y
# First observation: 2004/05/24
#  Last observation: 2016/05/29
# Chi-squared of fit:    12.92 DOF:   38 RMS:  0.14
# Min/Max residuals:    -0.37    0.25
# Exact a, adot, b, bdot, g, gdot:
  1.556999E-05  2.363913E-02  8.305294E-07  2.027717E-04  2.404854E-02  5.257417E-04
# Covariance matrix:
  1.7515E-13 -7.2015E-14  2.6948E-16 -5.4128E-16  9.0542E-14 -2.1904E-13
 -7.2015E-14  6.6774E-14 -4.2384E-16  5.7205E-16 -3.4805E-14  2.3116E-13
  2.6948E-16 -4.2384E-16  1.1522E-13 -1.2704E-14 -1.3927E-15 -1.4580E-15
 -5.4128E-16  5.7205E-16 -1.2704E-14  3.2990E-15 -4.0054E-16  2.0877E-15
  9.0542E-14 -3.4805E-14 -1.3927E-15 -4.0054E-16  7.6423E-13 -1.6591E-13
 -2.1904E-13  2.3116E-13 -1.4580E-15  2.0877E-15 -1.6591E-13  8.4382E-13
#      lat0       lon0       xBary       yBary       zBary        JD0
   -1.092627 -132.961632   -0.290369   -0.018450   -0.970078  2453149.855313
# Heliocentric elements and errors
Epoch:              2453150.5000  =  2004/05/25
Mean Anomaly:           33.50592 +/-     0.060
Argument of Peri:      258.07160 +/-     0.067
Long of Asc Node:      292.19404 +/-     0.006
Inclination:             1.18013 +/-     0.000
Eccentricity:         0.05448098 +/-    0.0001
Semi-Major Axis:     44.53492968 +/-    0.0071
Time of Perihelion: 2443047.0759 +/-      18.3
Perihelion:          42.10862328 +/-    0.0083
Aphelion:            46.96123608 +/-    0.0089
Period (y)              297.2072 +/-      0.07
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -28.78591303 +/-    0.0010
Ecliptic Y          -31.33151966 +/-    0.0011
Ecliptic Z           -0.79286558 +/-    0.0000
Ecliptic XDOT         0.00192572 +/-    0.0000
Ecliptic YDOT        -0.00188519 +/-    0.0000
Ecliptic ZDOT         0.00002206 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   42.55490358 +/-    0.0011
Geocenter to KBO     41.58258880 +/-    0.0015
# Hcoef:  6.88

The following table shows the complete astrometric record for 04KE19. 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 (04KE19) followed by the observatory code and reference code for the source of the astrometry.

2004 05  24.35457  14 56 59.38   -17 58 16.5   23.2g 04KE19    568  C~0VDq      
2004 05  24.37701  14 56 59.28   -17 58 16.0   23.2g 04KE19    568  C~0VDq      
2004 05  24.40204  14 56 59.17   -17 58 15.5   23.1g 04KE19    568  C~0VDq      
2004 05  25.36346  14 56 54.82   -17 57 56.4         04KE19    568  C~0VDq      
2004 06  10.26858  14 55 48.07   -17 52 59.2   22.3i 04KE19    568  C~0VDq      
2004 06  10.33325  14 55 47.82   -17 52 58.2   22.6i 04KE19    568  C~0VDq      
2004 06  10.40473  14 55 47.54   -17 52 56.9         04KE19    568  C~0VDq      
2005 05  14.37712  15 03 16.86   -18 23 51.1   22.6r 04KE19    568  C~0VDq      
2005 05  14.41084  15 03 16.69   -18 23 50.4   22.6r 04KE19    568  C~0VDq      
2005 05  14.44970  15 03 16.49   -18 23 49.7   22.9r 04KE19    568  C~0VDq      
2005 08  02.02478  14 59 29.28   -18 06 35.4         04KE19    309  C~0VDq      
2005 08  03.02019  14 59 29.52   -18 06 34.7         04KE19    309  C~0VDq      
2008 05  04.36435  15 20 39.77   -19 29 30.9         04KE19    695  C~0VDq      
2008 05  04.40196  15 20 39.58   -19 29 30.2         04KE19    695  C~0VDq      
2008 05  05.37851  15 20 34.91   -19 29 13.0         04KE19    695  C~0VDq      
2008 06  07.05484  15 18 01.25   -19 19 23.7         04KE19    807  C~0VDq      
2008 06  07.22863  15 18 00.49   -19 19 20.8         04KE19    807  C~0VDq      
2015 06  21.18262  15 55 59.55   -21 20 02.0         04KE19    W84  C~2fbn      
2015 06  21.25157  15 55 59.25   -21 20 01.3   23.2V 04KE19    W84  C~2fbn      
2015 06  22.07706  15 55 55.78   -21 19 50.4         04KE19    W84  C~2fbn      
2016 05  29.32572  16 03 19.709  -21 40 00.24        04KE19    G37  C~2bkb      
2016 05  29.38104  16 03 19.432  -21 39 59.27        04KE19    G37  C~2bkb      

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    -0.05       0.00    -0.14
  2   0.0001      0.00     0.01       0.00    -0.08
  3   0.0001      0.00     0.09       0.00    -0.08
  4   0.0028      0.00     0.00       0.00     0.01
  5   0.0463      0.00     0.04       0.00     0.19
  6   0.0465      0.00     0.09       0.00     0.07
  7   0.0467      0.00     0.08       0.00     0.12
  8   0.9720      0.00     0.03       0.00     0.22
  9   0.9721      0.00    -0.06       0.00     0.25
 10   0.9722      0.00    -0.22       0.00     0.18
 11   1.1901      0.00    -0.01       0.00    -0.11
 12   1.1928      0.00     0.00       0.00    -0.09
 13   3.9453      0.00     0.07       0.00    -0.24
 14   3.9454      0.00    -0.03       0.00    -0.22
 15   3.9480      0.00     0.14       0.00    -0.37
 16   4.0375      0.00    -0.17       0.00     0.07
 17   4.0380      0.00    -0.16       0.00    -0.00
 18  11.0741      0.00     0.18       0.00     0.15
 19  11.0743      0.00     0.11       0.00    -0.08
 20  11.0766      0.00    -0.15       0.00     0.02
 21  12.0136      0.00    -0.05       0.00    -0.03
 22  12.0138      0.00    -0.06       0.00     0.17

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.

04KE19    quality flag:3

Type:      CLASSICAL CLASSICAL CLASSICAL

axisobj        44.084    44.084    44.084
ecceobj         0.045     0.045     0.045
incobj          1.180     1.180     1.180
qmin           41.444    41.415    41.458
qmax           47.546    47.582    47.554
amean          44.416    44.416    44.416
amin           44.068    44.065    44.070
amax           44.777    44.773    44.778
emean           0.048     0.048     0.048
emin            0.033     0.033     0.033
emax            0.062     0.063     0.063
imean           2.940     2.940     2.940
imin            2.295     2.296     2.295
imax            3.453     3.453     3.452
excite_mean     0.071     0.071     0.071
fracstop        1.000     1.000     1.000
cjmean          3.100     3.100     3.100

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       174.4     174.5     174.6
kozaiamp        180.0     179.9     180.0