Orbit Fit and Astrometric record for 04KJ19

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: 04KJ19    
# Created Tue Dec 12 02:37:25 2017
# Orbit generated from Bernstein formalism
# Fitting   19 observations of   19
# Arc:  10.02y
# First observation: 2004/05/24
#  Last observation: 2014/05/30
Preliminary a, adot, b, bdot, g, gdot:
  -0.000759   0.028419  -0.000685   0.012917   0.029090   0.000000
# Chi-squared of fit:     6.89 DOF:   32 RMS:  0.11
# Min/Max residuals:    -0.28    0.32
# Exact a, adot, b, bdot, g, gdot:
  1.575031E-05  2.638096E-02  6.418890E-06  1.196256E-02  2.665676E-02 -4.665622E-03
# Covariance matrix:
  1.9235E-13 -1.0457E-13  2.4414E-14 -4.0935E-14  1.0203E-13 -3.0521E-13
 -1.0457E-13  2.5385E-13 -6.9417E-14  1.1478E-13  2.5179E-13  8.5429E-13
  2.4414E-14 -6.9417E-14  1.2843E-13 -4.5965E-14 -7.4154E-14 -2.3909E-13
 -4.0935E-14  1.1478E-13 -4.5965E-14  5.8782E-14  1.2041E-13  3.9524E-13
  1.0203E-13  2.5179E-13 -7.4154E-14  1.2041E-13  1.0059E-12  8.9417E-13
 -3.0521E-13  8.5429E-13 -2.3909E-13  3.9524E-13  8.9417E-13  2.9417E-12
#      lat0       lon0       xBary       yBary       zBary        JD0
   -1.384260 -126.628764   -0.181859   -0.024018   -0.996026  2453149.872103
# Heliocentric elements and errors
Epoch:              2453140.5000  =  2004/05/15
Mean Anomaly:          329.18647 +/-     0.014
Argument of Peri:       45.65383 +/-     0.019
Long of Asc Node:      236.60848 +/-     0.000
Inclination:            24.41067 +/-     0.000
Eccentricity:         0.23593401 +/-    0.0001
Semi-Major Axis:     47.10421286 +/-    0.0088
Time of Perihelion: 2463247.6118 +/-       3.5
Perihelion:          35.99072720 +/-    0.0086
Aphelion:            58.21769853 +/-    0.0121
Period (y)              323.2941 +/-      0.09
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -22.82726571 +/-    0.0008
Ecliptic Y          -31.00337577 +/-    0.0011
Ecliptic Z           -0.90597392 +/-    0.0000
Ecliptic XDOT         0.00243987 +/-    0.0000
Ecliptic YDOT        -0.00126292 +/-    0.0000
Ecliptic ZDOT         0.00123998 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   38.51122119 +/-    0.0010
Geocenter to KBO     37.51393417 +/-    0.0014
# Hcoef:  7.07

The following table shows the complete astrometric record for 04KJ19. 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 (04KJ19) followed by the observatory code and reference code for the source of the astrometry.

2004 05  24.37136  15 22 27.13   -19 57 20.7   22.5g 04KJ19    568  C~0VDq      
2004 05  24.39644  15 22 26.99   -19 57 20.1   22.9g 04KJ19    568  C~0VDq      
2004 05  24.41896  15 22 26.88   -19 57 19.5   22.7g 04KJ19    568  C~0VDq      
2004 05  25.38026  15 22 21.92   -19 56 54.1   22.7g 04KJ19    568  C~0VDq      
2004 06  10.31536  15 21 04.05   -19 50 03.8   22.6i 04KJ19    568  C~0VDq      
2004 06  10.38584  15 21 03.71   -19 50 02.0   22.5i 04KJ19    568  C~0VDq      
2004 06  10.45409  15 21 03.40   -19 50 00.4   22.8i 04KJ19    568  C~0VDq      
2005 05  14.40147  15 30 20.42   -19 44 16.5   22.5r 04KJ19    568  C~0VDq      
2005 05  14.43516  15 30 20.20   -19 44 15.3   22.7r 04KJ19    568  C~0VDq      
2005 05  14.47384  15 30 20.02   -19 44 14.5   22.5r 04KJ19    568  C~0VDq      
2005 07  11.09049  15 26 09.47   -19 22 10.4   21.7R 04KJ19    809  C~0VDq      
2005 07  11.19182  15 26 09.22   -19 22 08.8   22.2R 04KJ19    809  C~0VDq      
2005 08  02.09622  15 25 37.66   -19 17 23.3         04KJ19    309  C~0VDq      
2005 08  03.08966  15 25 37.36   -19 17 14.6         04KJ19    309  C~0VDq      
2006 07  01.29008  15 33 36.73   -19 07 05.4   22.7r 04KJ19    568  C~0VDq      
2006 07  01.30314  15 33 36.69   -19 07 05.1   22.7r 04KJ19    568  C~0VDq      
2014 05  30.25263  16 33 06.87   -16 07 49.6   22.5R 04KJ19    695  C~1LJL      
2014 05  30.38311  16 33 06.14   -16 07 47.2         04KJ19    695  C~1LJL      
2014 05  30.42043  16 33 05.92   -16 07 46.5         04KJ19    695  C~1LJL      

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    -0.02       0.00     0.14
  2   0.0001     -2.06    -0.11       0.08     0.05
  3   0.0001     -3.71     0.00       0.27     0.09
  4   0.0028    -77.80    -0.06       7.19     0.12
  5   0.0464  -1244.31     0.07     125.60    -0.03
  6   0.0466  -1249.41    -0.11     126.12    -0.03
  7   0.0468  -1254.05     0.01     126.55    -0.11
  8   0.9720   6279.71     0.32    2408.93    -0.16
  9   0.9721   6276.41    -0.28    2409.35     0.04
 10   0.9722   6273.75     0.16    2409.51    -0.05
 11   1.1300   2514.06    -0.03    2828.33     0.00
 12   1.1302   2510.24     0.13    2829.01    -0.09
 13   1.1902   2006.65     0.07    2995.02     0.07
 14   1.1929   2000.37    -0.02    3002.39    -0.07
 15   2.1024   8447.34    -0.11    5242.44    -0.04
 16   2.1025   8446.71    -0.02    5242.59     0.03
 17  10.0147  58115.72     0.08   26603.11     0.11
 18  10.0151  58104.03     0.05   26603.65    -0.01
 19  10.0152  58100.51    -0.14   26603.79    -0.07

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.

04KJ19    quality flag:2

Type:       SCATNEAR  SCATEXTD  SCATEXTD

axisobj        46.705    46.730    46.680
ecceobj         0.233     0.234     0.233
incobj         24.491    24.490    24.491
qmin           34.857    34.853    34.859
qmax           59.762    59.831    59.732
amean          47.061    47.087    47.028
amin           46.637    46.670    46.610
amax           47.605    47.601    47.538
emean           0.238     0.238     0.237
emin            0.219     0.221     0.219
emax            0.257     0.258     0.257
imean          25.484    25.482    25.488
imin           24.872    24.877    24.881
imax           26.011    26.003    26.014
excite_mean     0.492     0.492     0.492
fracstop        1.000     1.000     1.000
cjmean          2.831     2.831     2.831

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       174.1     174.5     173.7
kozaiamp        180.0     179.9     180.0