Orbit Fit and Astrometric record for 04DN64

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: 04DN64    
# Created Wed Dec 13 02:37:20 2017
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting    6 observations of    6
# Arc:  17.93d
# First observation: 2004/02/26
#  Last observation: 2004/03/15
# Chi-squared of fit:    46.97 DOF:    6 RMS:  0.49
# Min/Max residuals:    -0.56    1.20
# Exact a, adot, b, bdot, g, gdot:
  1.754448E-05  2.419076E-02 -7.116455E-07 -3.762851E-04  2.430044E-02  3.599568E-04
# Covariance matrix:
  1.0171E-11  1.7083E-08 -1.8752E-13 -1.8421E-10  2.8566E-09  1.0452E-08
  1.7083E-08  3.0221E-05 -3.3141E-10 -3.2565E-07  5.0489E-06  1.7267E-05
 -1.8752E-13 -3.3141E-10  5.0138E-13 -6.9683E-12 -5.5379E-11 -1.9978E-10
 -1.8421E-10 -3.2565E-07 -6.9683E-12  3.9474E-09 -5.4408E-08 -1.8676E-07
  2.8566E-09  5.0489E-06 -5.5379E-11 -5.4408E-08  8.4363E-07  3.0082E-06
  1.0452E-08  1.7267E-05 -1.9978E-10 -1.8676E-07  3.0082E-06  1.3539E-04
#      lat0       lon0       xBary       yBary       zBary        JD0
    1.894619 -176.719261    0.434369    0.029305   -0.884394  2453061.908663
# Heliocentric elements and errors
Epoch:              2453062.5000  =  2004/02/27
Mean Anomaly:            5.23595 +/-     9.442
Argument of Peri:      109.16818 +/-    52.654
Long of Asc Node:       67.57704 +/-     1.477
Inclination:             2.04785 +/-     0.024
Eccentricity:         0.06121543 +/-    0.3566
Semi-Major Axis:     44.76929768 +/-  109.0021
Time of Perihelion: 2451471.1632 +/-    6481.7
Perihelion:          42.02872579 +/-  103.5671
Aphelion:            47.50986956 +/-  116.7709
Period (y)              299.5564 +/-   1094.02
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -41.97351105 +/-    1.3909
Ecliptic Y           -1.96898003 +/-    0.0796
Ecliptic Z            1.36051346 +/-    0.0461
Ecliptic XDOT         0.00011044 +/-    0.0012
Ecliptic YDOT        -0.00273011 +/-    0.0005
Ecliptic ZDOT        -0.00004089 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   42.04168390 +/-    1.3887
Geocenter to KBO     41.15153945 +/-    1.3940
# Hcoef:  7.58

The following table shows the complete astrometric record for 04DN64. 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 (04DN64) followed by the observatory code and reference code for the source of the astrometry.

2004 02  26.40792  12 15 03.13   +00 26 03.8   23.3R 04DN64    695  Ck0899      
2004 02  26.48487  12 15 02.85   +00 26 05.6         04DN64    695  Ck0899      
2004 02  27.46725  12 14 59.02   +00 26 31.4         04DN64    695  Ck0899      
2004 03  14.43499  12 13 52.09   +00 33 58.3   23.6R 04DN64    695  Ck4349      
2004 03  15.25257  12 13 48.44   +00 34 21.4         04DN64    695  Ck4349      
2004 03  15.34004  12 13 48.02   +00 34 24.0         04DN64    695  Ck4349      

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    -0.19       0.00     1.20
  2   0.0002      0.00     0.11       0.00    -0.02
  3   0.0029      0.00     0.23       0.00    -0.28
  4   0.0466      0.00     0.85       0.00     0.29
  5   0.0489      0.00    -0.14       0.00    -0.19
  6   0.0491      0.00    -0.56       0.00    -0.12

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.

04DN64    quality flag:3

Type:      CLASSICAL CLASSICAL CLASSICAL

axisobj        44.248    44.248    44.248
ecceobj         0.050     0.050     0.050
incobj          2.050     2.050     2.050
qmin           41.277    41.275    41.278
qmax           48.011    48.012    48.011
amean          44.517    44.517    44.517
amin           44.168    44.168    44.168
amax           44.884    44.884    44.884
emean           0.054     0.054     0.054
emin            0.038     0.038     0.038
emax            0.070     0.070     0.070
imean           0.968     0.968     0.968
imin            0.250     0.250     0.250
imax            1.434     1.435     1.434
excite_mean     0.057     0.057     0.057
fracstop        1.000     1.000     1.000
cjmean          3.104     3.104     3.104

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       173.2     173.2     173.2
kozaiamp        180.0     180.0     180.0