Orbit Fit and Astrometric record for 02VW130

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: 02VW130   
# Created Tue Dec 12 02:37:18 2017
# Orbit generated from Bernstein formalism
# Fitting    5 observations of    5
# Arc:  25.07d
# First observation: 2002/11/07
#  Last observation: 2002/12/02
Preliminary a, adot, b, bdot, g, gdot:
  -0.000000   0.030976  -0.000000   0.000795   0.025436   0.000000
# WARNING Fitting with energy constraint
# Chi-squared of fit:     3.06 DOF:    5 RMS:  0.14
# Min/Max residuals:    -0.29    0.25
# Exact a, adot, b, bdot, g, gdot:
  1.640232E-05  2.615287E-02  4.905917E-07  7.635309E-04  2.460812E-02  6.858154E-04
# Covariance matrix:
  5.0877E-12  6.5049E-09  2.1691E-14  4.6802E-11  1.2733E-09 -1.0073E-08
  6.5049E-09  9.7296E-06  3.2374E-11  6.9852E-08  1.9002E-06 -1.5881E-05
  2.1691E-14  3.2374E-11  7.2344E-13 -1.0624E-11  6.3330E-12 -4.5011E-11
  4.6802E-11  6.9852E-08 -1.0624E-11  7.7793E-10  1.3664E-08 -9.7895E-08
  1.2733E-09  1.9002E-06  6.3330E-12  1.3664E-08  3.7184E-07 -2.5577E-06
 -1.0073E-08 -1.5881E-05 -4.5011E-11 -9.7895E-08 -2.5577E-06  4.4658E-04
#      lat0       lon0       xBary       yBary       zBary        JD0
    0.568722   21.360162   -0.385169    0.009002   -0.910130  2452585.673853
# Heliocentric elements and errors
Epoch:              2452580.5000  =  2002/11/02
Mean Anomaly:            7.75499 +/-   187.364
Argument of Peri:        6.71450 +/-   284.248
Long of Asc Node:        3.51992 +/-     1.645
Inclination:             1.76375 +/-     0.154
Eccentricity:         0.19277755 +/-    0.2249
Semi-Major Axis:     51.30061723 +/-   10.7629
Time of Perihelion: 2449689.4148 +/-   69843.8
Perihelion:          41.41101018 +/-   14.4423
Aphelion:            61.19022429 +/-   17.2599
Period (y)              367.4448 +/-    115.64
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           38.54991072 +/-    0.9378
Ecliptic Y           15.49629281 +/-    0.3667
Ecliptic Z            0.40339608 +/-    0.0100
Ecliptic XDOT        -0.00099697 +/-    0.0022
Ecliptic YDOT         0.00273389 +/-    0.0008
Ecliptic ZDOT         0.00008591 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   41.54989092 +/-    0.8808
Geocenter to KBO     40.63700044 +/-    1.0070
# Hcoef:  6.98

The following table shows the complete astrometric record for 02VW130. 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 (02VW130) followed by the observatory code and reference code for the source of the astrometry.

2002 11  07.17311  01 18 05.66   +08 51 27.9   22.6R 02VW130   695  Cg8319      
2002 11  07.28046  01 18 05.20   +08 51 25.2         02VW130   695  Cg8319      
2002 12  01.26130  01 16 41.63   +08 43 01.4   23.1R 02VW130   568  Cg8319      
2002 12  01.33274  01 16 41.39   +08 43 00.2         02VW130   568  Cg8319      
2002 12  02.24298  01 16 38.97   +08 42 45.2         02VW130   568  Cg8319      

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     0.00
  2   0.0003     -7.33    -0.08       0.05    -0.00
  3   0.0659  -1344.71     0.25      -1.90    -0.08
  4   0.0661  -1348.46    -0.29      -1.67     0.13
  5   0.0686  -1387.35     0.03      -2.09    -0.04

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.

02VW130    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