Orbit Fit and Astrometric record for 04KD19

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: 04KD19    
# Created Mon Dec 11 02:37:24 2017
# Orbit generated from Bernstein formalism
# Fitting   14 observations of   14
# Arc:   3.95y
# First observation: 2004/05/24
#  Last observation: 2008/05/05
Preliminary a, adot, b, bdot, g, gdot:
  -0.000066   0.026474   0.000002  -0.000646   0.026624   0.000000
# Chi-squared of fit:     8.53 DOF:   22 RMS:  0.14
# Min/Max residuals:    -0.36    0.27
# Exact a, adot, b, bdot, g, gdot:
  1.624492E-05  2.640213E-02 -5.085631E-07 -6.432621E-04  2.640263E-02  3.082673E-05
# Covariance matrix:
  3.4739E-13 -3.6287E-13 -3.0008E-15  6.3187E-15 -5.1967E-14 -2.4944E-12
 -3.6287E-13  6.6108E-13  6.2351E-15 -1.3763E-14  2.0858E-13  5.4387E-12
 -3.0008E-15  6.2351E-15  2.1613E-13 -8.5778E-14  1.6958E-16  5.5211E-14
  6.3187E-15 -1.3763E-14 -8.5778E-14  6.6530E-14 -6.8530E-15 -1.2764E-13
 -5.1967E-14  2.0858E-13  1.6958E-16 -6.8530E-15  1.0334E-12  2.7616E-12
 -2.4944E-12  5.4387E-12  5.5211E-14 -1.2764E-13  2.7616E-12  5.0485E-11
#      lat0       lon0       xBary       yBary       zBary        JD0
   -1.652575 -126.333974   -0.176731   -0.028709   -0.996825  2453149.872103
# Heliocentric elements and errors
Epoch:              2453140.5000  =  2004/05/15
Mean Anomaly:          147.80191 +/-     0.881
Argument of Peri:       80.61415 +/-     0.878
Long of Asc Node:        4.54646 +/-     0.012
Inclination:             2.12100 +/-     0.000
Eccentricity:         0.01565480 +/-    0.0002
Semi-Major Axis:     38.36203686 +/-    0.0056
Time of Perihelion: 2417509.4628 +/-     212.2
Perihelion:          37.76148691 +/-    0.0082
Aphelion:            38.96258681 +/-    0.0084
Period (y)              237.6078 +/-      0.05
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -22.88318667 +/-    0.0009
Ecliptic Y          -31.40511601 +/-    0.0012
Ecliptic Z           -1.09226204 +/-    0.0000
Ecliptic XDOT         0.00220208 +/-    0.0000
Ecliptic YDOT        -0.00163011 +/-    0.0000
Ecliptic ZDOT        -0.00006665 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   38.87305725 +/-    0.0011
Geocenter to KBO     37.87501791 +/-    0.0015
# Hcoef:  7.52

The following table shows the complete astrometric record for 04KD19. 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 (04KD19) followed by the observatory code and reference code for the source of the astrometry.

2004 05  24.37136  15 23 22.75   -20 17 22.7   23.6g 04KD19    568  C~0V8G      
2004 05  24.39644  15 23 22.61   -20 17 22.3   23.6g 04KD19    568  C~0V8G      
2004 05  24.41896  15 23 22.50   -20 17 21.8   23.5g 04KD19    568  C~0V8G      
2004 05  25.38026  15 23 17.47   -20 17 03.4   23.5g 04KD19    568  C~0V8G      
2005 05  14.40334  15 30 31.29   -20 45 05.1   22.9r 04KD19    568  C~0V8G      
2005 05  14.43701  15 30 31.10   -20 45 04.6   23.0r 04KD19    568  C~0V8G      
2005 05  14.47570  15 30 30.89   -20 45 03.7   22.9r 04KD19    568  C~0V8G      
2005 05  17.38052  15 30 15.26   -20 44 10.5   23.6r 04KD19    568  C~0V8G      
2005 08  02.03428  15 25 41.34   -20 26 24.2         04KD19    309  C~0V8G      
2005 08  02.03825  15 25 41.34   -20 26 24.4         04KD19    309  C~0V8G      
2006 05  02.42422  15 37 52.48   -21 12 08.2         04KD19    695  C~0V8G      
2006 05  02.46723  15 37 52.26   -21 12 07.4   22.9r 04KD19    695  C~0V8G      
2008 05  05.40969  15 50 12.42   -21 55 30.9         04KD19    695  C~0V8G      
2008 05  05.44037  15 50 12.26   -21 55 30.5         04KD19    695  C~0V8G      

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    -0.09       0.00     0.03
  2   0.0001     -2.01    -0.15      -0.11    -0.07
  3   0.0001     -3.63    -0.02      -0.01     0.03
  4   0.0028    -76.75     0.10       0.01    -0.05
  5   0.9720   6246.02     0.17    -130.38     0.21
  6   0.9721   6243.31     0.12    -130.54     0.08
  7   0.9722   6240.23     0.10    -130.37     0.27
  8   0.9802   6014.42     0.10    -131.55     0.02
  9   1.1900   2022.45    -0.06     -37.97     0.06
 10   1.1901   2022.50     0.02     -38.16    -0.14
 11   1.9385  12647.53    -0.20    -255.37    -0.36
 12   1.9387  12644.34    -0.14    -255.29    -0.25
 13   3.9481  23372.71     0.00    -526.10     0.11
 14   3.9482  23370.42     0.06    -526.18     0.06

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.

04KD19    quality flag:3

Type:      CLASSICAL CLASSICAL CLASSICAL

axisobj        38.053    38.070    38.037
ecceobj         0.022     0.021     0.022
incobj          2.129     2.129     2.129
qmin           37.007    37.003    36.998
qmax           39.769    39.726    39.754
amean          38.303    38.319    38.286
amin           38.021    38.038    38.008
amax           38.587    38.602    38.570
emean           0.018     0.018     0.018
emin            0.005     0.006     0.006
emax            0.031     0.030     0.031
imean           4.393     4.390     4.395
imin            2.518     2.520     2.515
imax            5.747     5.769     5.725
excite_mean     0.079     0.079     0.079
fracstop        1.000     1.000     1.000
cjmean          3.035     3.035     3.035

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       180.3     180.4     180.2
kozaiamp        180.0     180.0     180.0