Orbit Fit and Astrometric record for 385533

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: 385533    
# Created Wed Dec 13 02:36:45 2017
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting   26 observations of   26
# Arc:   9.13y
# First observation: 2004/08/19
#  Last observation: 2013/10/06
# Chi-squared of fit:    44.17 DOF:   46 RMS:  0.23
# Min/Max residuals:    -0.64    0.62
# Exact a, adot, b, bdot, g, gdot:
  1.455483E-05  2.334608E-02 -6.881261E-06 -1.032165E-02  2.526653E-02  2.430355E-03
# Covariance matrix:
  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00
  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00
  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00
  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00
  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00
  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00
#      lat0       lon0       xBary       yBary       zBary        JD0
   -0.199622  -44.563525   -0.198457   -0.003413   -0.996548  2453236.849313
# Heliocentric elements and errors
Epoch:              2453236.5000  =  2004/08/19
Mean Anomaly:           55.86255 +/-     0.000
Argument of Peri:      112.92651 +/-     0.000
Long of Asc Node:      135.27479 +/-     0.000
Inclination:            23.91307 +/-     0.000
Eccentricity:         0.11421899 +/-    0.0000
Semi-Major Axis:     42.90018726 +/-    0.0000
Time of Perihelion: 2437310.5452 +/-       0.0
Perihelion:          38.00017124 +/-    0.0000
Aphelion:            47.80020327 +/-    0.0000
Period (y)              280.9940 +/-      0.00
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           29.04366640 +/-    0.0000
Ecliptic Y          -28.32794385 +/-    0.0000
Ecliptic Z           -0.13813294 +/-    0.0000
Ecliptic XDOT         0.00195809 +/-    0.0000
Ecliptic YDOT         0.00161332 +/-    0.0000
Ecliptic ZDOT        -0.00111924 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   40.57118290 +/-    0.0000
Geocenter to KBO     39.57801673 +/-    0.0000
# Hcoef:  7.01

The following table shows the complete astrometric record for 385533. 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 (385533) followed by the observatory code and reference code for the source of the astrometry.

2004 08  19.34857  21 11 50.44   -16 23 54.3   23.0g 385533    568  C~0VDs      
2004 08  19.37565  21 11 50.31   -16 23 55.4   23.1g 385533    568  C~0VDs      
2004 08  19.40662  21 11 50.15   -16 23 56.1   23.0g 385533    568  C~0VDs      
2005 07  30.38318  21 19 30.24   -16 24 17.7   23.0R 385533    568  C~0VDs      
2005 07  30.41535  21 19 30.08   -16 24 18.6   23.0R 385533    568  C~0VDs      
2005 07  30.45660  21 19 29.88   -16 24 19.7   22.9R 385533    568  C~0VDs      
2005 07  31.42775  21 19 25.24   -16 24 47.1   23.2r 385533    568  C~0VDs      
2006 07  20.43925  21 26 17.65   -16 28 31.8         385533    568  C~0VDs      
2006 07  20.46564  21 26 17.53   -16 28 32.5   23.2r 385533    568  C~0VDs      
2006 07  20.49206  21 26 17.42   -16 28 33.4   23.4r 385533    568  C~0VDs      
2006 10  21.92257  21 20 27.66   -17 03 42.5         385533    950  C~0VDs      
2006 10  22.92409  21 20 26.81   -17 03 49.9         385533    950  C~0VDs      
2007 09  11.24844  21 28 14.44   -17 01 09.6   22.5r 385533    695  C~0VDs      
2007 09  11.30904  21 28 14.19   -17 01 11.1   22.5r 385533    695  C~0VDs      
2007 09  12.23784  21 28 10.40   -17 01 33.2   22.3r 385533    695  C~0VDs      
2007 09  16.25250  21 27 54.55   -17 03 05.4         385533    675  C~0VDs      
2007 09  17.26057  21 27 50.72   -17 03 27.8         385533    675  C~0VDs      
2007 09  17.26471  21 27 50.70   -17 03 28.0         385533    675  C~0VDs      
2009 06  21.44630  21 45 47.66   -16 38 40.7         385533    695  C~0VDs      
2009 06  22.39252  21 45 45.39   -16 39 01.3         385533    695  C~0VDs      
2009 07  24.31216  21 43 54.29   -16 53 02.2         385533    675  C~0VDs      
2009 07  25.34532  21 43 49.77   -16 53 32.6         385533    675  C~0VDs      
2009 07  25.42734  21 43 49.40   -16 53 35.2         385533    675  C~0VDs      
2013 10  05.18542  22 02 12.74   -17 46 52.9   22.9R 385533    695  C~0zda      
2013 10  05.28126  22 02 12.47   -17 46 54.9         385533    695  C~0zda      
2013 10  06.22581  22 02 09.56   -17 47 10.0         385533    695  C~0zda      

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    -0.13       0.00    -0.64
  2   0.0001      0.00     0.06       0.00    -0.25
  3   0.0002      0.00    -0.08       0.00    -0.11
  4   0.9447      0.00     0.30       0.00     0.29
  5   0.9447      0.00     0.24       0.00     0.30
  6   0.9449      0.00     0.24       0.00     0.37
  7   0.9475      0.00     0.08       0.00     0.34
  8   1.9167      0.00     0.04       0.00     0.01
  9   1.9168      0.00     0.02       0.00     0.04
 10   1.9169      0.00     0.15       0.00    -0.13
 11   2.1727      0.00    -0.21       0.00    -0.05
 12   2.1754      0.00    -0.46       0.00     0.10
 13   3.0606      0.00     0.02       0.00     0.09
 14   3.0608      0.00     0.07       0.00     0.03
 15   3.0634      0.00    -0.02       0.00    -0.03
 16   3.0743      0.00     0.10       0.00     0.00
 17   3.0771      0.00     0.29       0.00    -0.05
 18   3.0771      0.00     0.23       0.00    -0.16
 19   4.8380      0.00     0.12       0.00    -0.10
 20   4.8406      0.00    -0.23       0.00    -0.12
 21   4.9280      0.00     0.16       0.00    -0.32
 22   4.9309      0.00    -0.11       0.00    -0.20
 23   4.9311      0.00    -0.18       0.00    -0.37
 24   9.1275      0.00    -0.25       0.00     0.62
 25   9.1278      0.00     0.29       0.00     0.14
 26   9.1304      0.00     0.23       0.00    -0.10

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.

385533    quality flag:3

Type:       SCATEXTD  SCATEXTD  SCATEXTD

axisobj        43.089    43.089    43.089
ecceobj         0.113     0.113     0.113
incobj         23.848    23.848    23.848
qmin           37.492    37.635    37.389
qmax           49.042    48.969    49.111
amean          43.129    43.128    43.127
amin           42.776    42.770    42.756
amax           43.512    43.514    43.532
emean           0.112     0.111     0.113
emin            0.098     0.097     0.098
emax            0.128     0.125     0.130
imean          22.617    22.629    22.603
imin           22.156    22.214    22.154
imax           23.015    23.016    23.017
excite_mean     0.401     0.400     0.401
fracstop        1.000     1.000     1.000
cjmean          2.894     2.894     2.894

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       178.5     177.3     183.6
kozaiamp        179.9     180.0     180.0