Orbit Fit and Astrometric record for 04DM71

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: 04DM71    
# Created Tue Oct 17 01:37:28 2017
# Orbit generated from Bernstein formalism
# Fitting   10 observations of   11
# Arc:  11.05y
# First observation: 2004/02/27
#  Last observation: 2015/03/16
Preliminary a, adot, b, bdot, g, gdot:
   0.000009   0.022179   0.000001   0.000367   0.023618   0.000000
# Chi-squared of fit:     8.28 DOF:   14 RMS:  0.16
# Min/Max residuals:    -0.31    0.33
# Exact a, adot, b, bdot, g, gdot:
  1.526279E-05  2.190634E-02  1.341232E-06  3.600677E-04  2.330548E-02  7.610061E-04
# Covariance matrix:
  4.6913E-13  2.8147E-13  3.6739E-15  4.8644E-15  8.1184E-13  1.2725E-12
  2.8147E-13  4.6286E-12 -3.6388E-16  7.6884E-14  5.4644E-12  1.8954E-11
  3.6739E-15 -3.6388E-16  2.0918E-13 -2.2356E-14  6.5414E-15 -1.0889E-15
  4.8644E-15  7.6884E-14 -2.2356E-14  9.3095E-15  9.0564E-14  3.1536E-13
  8.1184E-13  5.4644E-12  6.5414E-15  9.0564E-14  7.3155E-12  2.2465E-11
  1.2725E-12  1.8954E-11 -1.0889E-15  3.1536E-13  2.2465E-11  7.7754E-11
#      lat0       lon0       xBary       yBary       zBary        JD0
    2.140719  171.356826    0.226542    0.035901   -0.958923  2453062.839203
# Heliocentric elements and errors
Epoch:              2453060.5000  =  2004/02/25
Mean Anomaly:          108.30170 +/-     0.215
Argument of Peri:      313.76258 +/-     0.199
Long of Asc Node:      105.52688 +/-     0.005
Inclination:             2.30015 +/-     0.000
Eccentricity:         0.03239039 +/-    0.0004
Semi-Major Axis:     43.38997330 +/-    0.0111
Time of Perihelion: 2421654.3094 +/-      61.1
Perihelion:          41.98455512 +/-    0.0207
Aphelion:            44.79539148 +/-    0.0211
Period (y)              285.8198 +/-      0.11
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -43.30987068 +/-    0.0049
Ecliptic Y            6.81378071 +/-    0.0008
Ecliptic Z            1.60286619 +/-    0.0002
Ecliptic XDOT        -0.00047717 +/-    0.0000
Ecliptic YDOT        -0.00253776 +/-    0.0000
Ecliptic ZDOT         0.00004575 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   43.87187807 +/-    0.0049
Geocenter to KBO     42.90836944 +/-    0.0050
# Hcoef:  7.32

The following table shows the complete astrometric record for 04DM71. 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 (04DM71) followed by the observatory code and reference code for the source of the astrometry.

2004 02  27.33846  11 31 37.80   +05 23 39.2   23.0R 04DM71    695  Ck5116      
2004 02  27.43247  11 31 37.41   +05 23 42.1         04DM71    695  Ck5116      
2004 03  15.22719  11 30 25.06   +05 31 35.5   23.2R 04DM71    695  Ck5116      
2004 03  15.32049  11 30 24.64   +05 31 38.2         04DM71    695  Ck5116      
2005 04  10.22402  11 33 19.31   +05 14 00.1   23.0R 04DM71    695  Cn3122      
2005 04  10.34054  11 33 18.85   +05 14 03.4         04DM71    695  Cn3122      
2005 04  11.22672  11 33 15.53   +05 14 23.2         04DM71    695  Cn3122      
2005 06  07.00280  11 31 25.27   +05 23 54.0   23.8R 04DM71    304  Cn6536      
2005 06  07.99911  11 31 25.52   +05 23 49.4         04DM71    304  Cn6536      
2015 03  16.28225  12 21 08.73   +00 13 41.7   24.0R 04DM71    G37  C~1N5r      
2015 03  16.35450  12 21 08.38   +00 13 43.8         04DM71    G37  C~1N5r      

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    -0.08       0.00    -0.23
  2   0.0003     -6.50    -0.04       0.36     0.09
  3   0.0462  -1185.97     0.13       8.82    -0.07
  4   0.0465  -1192.80    -0.01       8.83    -0.03
  5   1.1167   1621.57     0.33      67.43    -0.03
  6   1.1170   1613.96 (  -0.12)     67.74 (   0.48)
  7   1.1195   1560.57    -0.25      66.30     0.13
  8   1.2749   -177.75    -0.05     -60.31     0.09
  9   1.2776   -172.50    -0.02     -63.06     0.08
 10  11.0471  49116.29     0.31     841.47     0.08
 11  11.0473  49110.32    -0.31     841.26    -0.11

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.

04DM71    quality flag:3

Type:      CLASSICAL CLASSICAL CLASSICAL

axisobj        42.951    42.984    42.919
ecceobj         0.038     0.037     0.039
incobj          2.301     2.301     2.301
qmin           40.173    40.261    40.047
qmax           46.351    46.296    46.362
amean          43.149    43.182    43.116
amin           42.818    42.841    42.784
amax           43.502    43.530    43.459
emean           0.048     0.047     0.049
emin            0.027     0.026     0.028
emax            0.066     0.064     0.067
imean           1.310     1.294     1.324
imin            0.128     0.133     0.125
imax            2.112     2.062     2.149
excite_mean     0.054     0.052     0.055
fracstop        1.000     1.000     1.000
cjmean          3.088     3.088     3.087

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       177.7     177.5     177.4
kozaiamp        180.0     180.0     180.0