Orbit Fit and Astrometric record for 02VG131

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: 02VG131   
# Created Tue Oct 24 01:37:21 2017
# Orbit generated from Bernstein formalism
# Fitting    6 observations of    6
# Arc:  26.02d
# First observation: 2002/11/09
#  Last observation: 2002/12/05
Preliminary a, adot, b, bdot, g, gdot:
   0.000000   0.142845  -0.000001  -0.040859   0.076124   0.000000
# Chi-squared of fit:     2.04 DOF:    6 RMS:  0.10
# Min/Max residuals:    -0.17    0.17
# Exact a, adot, b, bdot, g, gdot:
  2.656539E-05  1.196283E-01 -9.494084E-06 -4.423184E-02  7.217278E-02  3.040766E-02
# Covariance matrix:
  8.7547E-13  5.9961E-10 -9.8108E-15  8.3662E-11  1.0774E-10 -8.0054E-09
  5.9961E-10  2.6609E-06 -5.1618E-11  3.8149E-07  4.5545E-07 -3.9420E-05
 -9.8108E-15 -5.1618E-11  7.2905E-13 -1.9213E-11 -7.9997E-12  1.0320E-09
  8.3662E-11  3.8149E-07 -1.9213E-11  5.6833E-08  6.3714E-08 -6.1600E-06
  1.0774E-10  4.5545E-07 -7.9997E-12  6.3714E-08  7.9303E-08 -6.3204E-06
 -8.0054E-09 -3.9420E-05  1.0320E-09 -6.1600E-06 -6.3204E-06  7.2066E-04
#      lat0       lon0       xBary       yBary       zBary        JD0
    5.763984   17.348065   -0.478382    0.086752   -0.859745  2452587.680353
# Heliocentric elements and errors
Epoch:              2452580.5000  =  2002/11/02
Mean Anomaly:           33.34112 +/-     7.962
Argument of Peri:       99.83365 +/-    20.948
Long of Asc Node:      213.38440 +/-     0.309
Inclination:            21.22791 +/-     0.409
Eccentricity:         0.34324553 +/-    0.2056
Semi-Major Axis:     19.10835249 +/-    2.6429
Time of Perihelion: 2449754.8983 +/-     334.2
Perihelion:          12.54949596 +/-    4.2955
Aphelion:            25.66720903 +/-    5.2954
Period (y)               83.5301 +/-     17.33
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           13.83958049 +/-    0.0513
Ecliptic Y            4.83014260 +/-    0.0160
Ecliptic Z            1.39142003 +/-    0.0054
Ecliptic XDOT        -0.00010426 +/-    0.0010
Ecliptic YDOT         0.00472062 +/-    0.0003
Ecliptic ZDOT        -0.00155338 +/-    0.0001
# Distances at JD0 (AU)
Heliocenter to KBO   14.72414056 +/-    0.0485
Geocenter to KBO     13.85563953 +/-    0.0541
# Hcoef: 11.33

The following table shows the complete astrometric record for 02VG131. 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 (02VG131) followed by the observatory code and reference code for the source of the astrometry.

2002 11  09.17961  00 54 57.98   +12 07 52.4   22.5R 02VG131   695  Cg8319      
2002 11  09.26667  00 54 57.20   +12 07 44.2         02VG131   695  Cg8319      
2002 12  02.21513  00 52 25.81   +11 34 57.0   22.8R 02VG131   568  Cg8319      
2002 12  02.33724  00 52 25.26   +11 34 48.3         02VG131   568  Cg8319      
2002 12  05.14387  00 52 14.81   +11 31 28.3   23.1R 02VG131   662  C~077L      
2002 12  05.19575  00 52 14.61   +11 31 24.5         02VG131   662  C~077L      

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    -0.07       0.00    -0.04
  2   0.0002    -13.73     0.07      -3.11     0.04
  3   0.0631  -2826.95     0.09    -949.65    -0.17
  4   0.0634  -2837.79    -0.10    -954.51     0.17
  5   0.0711  -3057.32     0.13   -1078.68     0.06
  6   0.0712  -3061.52    -0.13   -1081.03    -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.

02VG131    quality flag:0

Type:      ERR2LARGE ERR2LARGE ERR2LARGE

axisobj         0.000     0.000     0.000
ecceobj        -1.000    -1.000    -1.000
incobj         -1.000    -1.000    -1.000
qmin            0.000     0.000     0.000
qmax            0.000     0.000     0.000
amean           0.000     0.000     0.000
amin            0.000     0.000     0.000
amax            0.000     0.000     0.000
emean           0.000     0.000     0.000
emin            0.000     0.000     0.000
emax            0.000     0.000     0.000
imean           0.000     0.000     0.000
imin            0.000     0.000     0.000
imax            0.000     0.000     0.000
excite_mean     0.000     0.000     0.000
fracstop        0.000     0.000     0.000
cjmean          0.000     0.000     0.000

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         0.0       0.0       0.0
kozaiamp          0.0       0.0       0.0