Orbit Fit and Astrometric record for 04KG19

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: 04KG19    
# Created Mon Dec 11 02:37:24 2017
# Orbit generated from Bernstein formalism
# Fitting   19 observations of   19
# Arc:  10.89y
# First observation: 2004/05/24
#  Last observation: 2015/04/15
Preliminary a, adot, b, bdot, g, gdot:
  -0.000331   0.024075  -0.000004   0.000133   0.024657   0.000000
# Chi-squared of fit:    12.01 DOF:   32 RMS:  0.14
# Min/Max residuals:    -0.21    0.29
# Exact a, adot, b, bdot, g, gdot:
  1.598917E-05  2.358641E-02 -1.331360E-06  1.313822E-04  2.416398E-02  9.465897E-06
# Covariance matrix:
  2.1632E-13 -1.4135E-13  1.5940E-16 -5.9977E-16  1.8251E-13 -3.9746E-13
 -1.4135E-13  1.9495E-13 -6.4620E-16  9.9954E-16 -9.5651E-16  6.5590E-13
  1.5940E-16 -6.4620E-16  1.0989E-13 -1.3210E-14 -2.5349E-15 -2.8715E-15
 -5.9977E-16  9.9954E-16 -1.3210E-14  5.2696E-15  6.8627E-16  3.6297E-15
  1.8251E-13 -9.5651E-16 -2.5349E-15  6.8627E-16  1.6656E-12  4.1473E-13
 -3.9746E-13  6.5590E-13 -2.8715E-15  3.6297E-15  4.1473E-13  2.3729E-12
#      lat0       lon0       xBary       yBary       zBary        JD0
   -0.927386 -131.756579   -0.269947   -0.015747   -0.976006  2453149.858113
# Heliocentric elements and errors
Epoch:              2453140.5000  =  2004/05/15
Mean Anomaly:           20.24514 +/-     0.178
Argument of Peri:      268.63463 +/-     0.188
Long of Asc Node:      298.61704 +/-     0.010
Inclination:             0.96406 +/-     0.000
Eccentricity:         0.02617179 +/-    0.0002
Semi-Major Axis:     43.42432940 +/-    0.0097
Time of Perihelion: 2447262.6774 +/-      51.6
Perihelion:          42.28783697 +/-    0.0117
Aphelion:            44.56082183 +/-    0.0121
Period (y)              286.1593 +/-      0.10
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -28.00885325 +/-    0.0015
Ecliptic Y          -31.77408810 +/-    0.0016
Ecliptic Z           -0.66983404 +/-    0.0000
Ecliptic XDOT         0.00199002 +/-    0.0000
Ecliptic YDOT        -0.00178769 +/-    0.0000
Ecliptic ZDOT         0.00001499 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   42.36197839 +/-    0.0016
Geocenter to KBO     41.38391143 +/-    0.0022
# Hcoef:  7.60

The following table shows the complete astrometric record for 04KG19. 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 (04KG19) followed by the observatory code and reference code for the source of the astrometry.

2004 05  24.35737  15 02 02.96   -18 09 08.5   24.1g 04KG19    568  C~0VDq      
2004 05  24.38051  15 02 02.85   -18 09 08.3   24.1g 04KG19    568  C~0VDq      
2004 05  24.40488  15 02 02.73   -18 09 07.8   23.9g 04KG19    568  C~0VDq      
2004 05  25.36626  15 01 58.32   -18 08 49.3   23.7g 04KG19    568  C~0VDq      
2004 06  10.27217  15 00 50.13   -18 03 56.0   23.1i 04KG19    568  C~0VDq      
2004 06  10.33739  15 00 49.86   -18 03 54.6   23.3i 04KG19    568  C~0VDq      
2004 06  10.40819  15 00 49.58   -18 03 53.4   23.4i 04KG19    568  C~0VDq      
2005 05  14.38273  15 08 21.16   -18 34 21.5   23.3r 04KG19    568  C~0VDq      
2005 05  14.41646  15 08 21.00   -18 34 20.9   23.3r 04KG19    568  C~0VDq      
2005 05  14.45529  15 08 20.80   -18 34 20.1   23.2r 04KG19    568  C~0VDq      
2005 07  11.07989  15 04 45.44   -18 19 04.4   23.0R 04KG19    809  C~0VDq      
2005 07  11.11440  15 04 45.37   -18 19 04.1   23.2R 04KG19    809  C~0VDq      
2006 05  26.38188  15 12 56.37   -18 51 54.1   23.9r 04KG19    568  C~0VDq      
2006 05  26.41525  15 12 56.21   -18 51 53.4   23.9r 04KG19    568  C~0VDq      
2006 05  26.44870  15 12 56.06   -18 51 52.9   23.8r 04KG19    568  C~0VDq      
2006 05  27.45918  15 12 51.33   -18 51 34.1         04KG19    568  C~0VDq      
2015 04  15.39737  16 06 32.44   -21 42 32.5   23.2R 04KG19    695  C~1RHU      
2015 04  15.43535  16 06 32.28   -21 42 31.9         04KG19    695  C~1RHU      
2015 04  15.47410  16 06 32.12   -21 42 31.8         04KG19    695  C~1RHU      

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    -0.11       0.00     0.29
  2   0.0001     -1.56    -0.06      -0.25     0.05
  3   0.0001     -3.34    -0.14      -0.24     0.05
  4   0.0028    -68.87     0.03      -0.00    -0.14
  5   0.0463  -1084.31     0.29       9.75    -0.14
  6   0.0465  -1088.40     0.10      10.01     0.10
  7   0.0467  -1092.57     0.16      10.05     0.10
  8   0.9720   5593.98    -0.10      23.85    -0.18
  9   0.9721   5591.62    -0.01      23.81    -0.21
 10   0.9722   5588.67    -0.14      23.82    -0.20
 11   1.1300   2389.39    -0.15      68.64     0.10
 12   1.1301   2388.35    -0.17      68.66     0.07
 13   2.0042   9648.51     0.08      54.95     0.04
 14   2.0043   9646.13     0.04      55.02     0.11
 15   2.0044   9643.94     0.20      54.94     0.02
 16   2.0071   9574.06     0.00      55.33    -0.06
 17  10.8913  57433.62     0.26     303.32    -0.03
 18  10.8914  57431.14    -0.05     303.50     0.18
 19  10.8915  57428.76    -0.21     303.18    -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.

04KG19    quality flag:3

Type:      CLASSICAL CLASSICAL CLASSICAL

axisobj        43.013    43.042    42.985
ecceobj         0.016     0.017     0.016
incobj          0.964     0.964     0.964
qmin           41.602    41.645    41.580
qmax           45.160    45.231    45.137
amean          43.328    43.357    43.299
amin           43.001    43.031    42.966
amax           43.661    43.696    43.633
emean           0.018     0.019     0.018
emin            0.000     0.001     0.000
emax            0.035     0.036     0.035
imean           2.727     2.723     2.732
imin            1.899     1.906     1.891
imax            3.432     3.424     3.444
excite_mean     0.052     0.052     0.052
fracstop        1.000     1.000     1.000
cjmean          3.090     3.091     3.090

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       176.4     175.8     177.2
kozaiamp        180.0     180.0     180.0