Orbit Fit and Astrometric record for 04DF77

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: 04DF77    
# Created Wed Sep 26 00:57:37 2018
# Orbit generated from Bernstein formalism
# Fitting    4 observations of    4
# Arc:  17.00d
# First observation: 2004/02/27
#  Last observation: 2004/03/15
# WARNING Fitting with energy constraint
# WARNING and with gdot fixed = 0
# Chi-squared of fit:     0.49 DOF:    4 RMS:  0.06
# Min/Max residuals:    -0.12    0.12
# Exact a, adot, b, bdot, g, gdot:
  1.113684E-05  1.677523E-02 -1.033932E-05 -1.553997E-02  2.366530E-02  0.000000E+00
# Covariance matrix:
  7.7569E-11  1.1512E-07 -5.4899E-13 -6.9261E-10  1.8327E-08  0.0000E+00
  1.1512E-07  1.7250E-04 -8.2249E-10 -1.0376E-06  2.7457E-05  0.0000E+00
 -5.4899E-13 -8.2249E-10  7.2149E-13 -1.0550E-11 -1.3092E-10  0.0000E+00
 -6.9261E-10 -1.0376E-06 -1.0550E-11  6.9272E-09 -1.6517E-07  0.0000E+00
  1.8327E-08  2.7457E-05 -1.3092E-10 -1.6517E-07  4.3703E-06  0.0000E+00
  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  1.7440E-04
#      lat0       lon0       xBary       yBary       zBary        JD0
    3.872951  170.824102    0.217808    0.065008   -0.959413  2453062.827593
# Heliocentric elements and errors
Epoch:              2453060.5000  =  2004/02/25
Mean Anomaly:          356.32165 +/-   139.595
Argument of Peri:      178.29599 +/-   206.262
Long of Asc Node:      354.62758 +/-     3.131
Inclination:            42.82183 +/-    22.037
Eccentricity:         0.02635330 +/-    0.5998
Semi-Major Axis:     44.38719231 +/-   23.5089
Time of Perihelion: 2454164.1592 +/-  365929.0
Perihelion:          43.21744319 +/-   35.1095
Aphelion:            45.55694144 +/-   35.9296
Period (y)              295.7295 +/-    234.94
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -42.53829490 +/-    3.6766
Ecliptic Y            7.09336997 +/-    0.5942
Ecliptic Z            2.85372540 +/-    0.2521
Ecliptic XDOT        -0.00043302 +/-    0.0015
Ecliptic YDOT        -0.00190323 +/-    0.0014
Ecliptic ZDOT        -0.00179358 +/-    0.0002
# Distances at JD0 (AU)
Heliocenter to KBO   43.21997430 +/-    3.6199
Geocenter to KBO     42.25596378 +/-    3.7328
# Hcoef:  7.68

The following table shows the complete astrometric record for 04DF77. 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 (04DF77) followed by the observatory code and reference code for the source of the astrometry.

2004 02  27.32685  11 32 25.19   +07 11 44.3   23.6R 04DF77    695  Ck9975      
2004 02  27.42087  11 32 24.74   +07 11 46.4         04DF77    695  Ck9975      
2004 03  15.23693  11 31 03.73   +07 17 53.9   23.7R 04DF77    695  Ck9975      
2004 03  15.32442  11 31 03.30   +07 17 56.0         04DF77    695  Ck9975      

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     0.01       0.00    -0.01
  2   0.0003     -6.98    -0.02      -0.72     0.01
  3   0.0463  -1259.51     0.04    -139.89    -0.12
  4   0.0465  -1266.21    -0.04    -140.48     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.

04DF77    quality flag:3

Type:       SCATEXTD  SCATEXTD  SCATEXTD

axisobj        44.045    44.045    44.045
ecceobj         0.019     0.019     0.019
incobj         43.024    43.024    43.024
qmin           42.649    42.649    42.649
qmax           45.899    45.898    45.900
amean          44.189    44.189    44.189
amin           43.859    43.859    43.859
amax           44.522    44.523    44.522
emean           0.022     0.022     0.022
emin            0.014     0.014     0.014
emax            0.031     0.031     0.031
imean          43.509    43.509    43.509
imin           43.303    43.302    43.303
imax           43.709    43.709    43.709
excite_mean     0.689     0.689     0.689
fracstop        1.000     1.000     1.000
cjmean          2.437     2.437     2.437

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       178.9     178.9     178.9
kozaiamp        179.9     179.9     179.9