Orbit Fit and Astrometric record for 02VB131

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: 02VB131   
# Created Sat Nov 17 02:08:08 2018
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting   25 observations of   25
# Arc:  10.92y
# First observation: 2002/11/07
#  Last observation: 2013/10/07
# Chi-squared of fit:    46.59 DOF:   44 RMS:  0.24
# Min/Max residuals:    -0.86    0.42
# Exact a, adot, b, bdot, g, gdot:
  1.400876E-05  2.110259E-02 -5.146831E-07  2.187428E-04  2.284762E-02  2.433365E-04
# Covariance matrix:
  1.6761E-13 -5.9838E-14  5.3174E-16 -4.3788E-16 -2.0155E-14 -1.9035E-13
 -5.9838E-14  4.5426E-14 -3.9943E-16  3.8328E-16 -2.1438E-14  1.7323E-13
  5.3174E-16 -3.9943E-16  1.1687E-13 -1.6688E-14 -7.2263E-16 -1.8438E-15
 -4.3788E-16  3.8328E-16 -1.6688E-14  4.7558E-15  6.7918E-17  1.6736E-15
 -2.0155E-14 -2.1438E-14 -7.2263E-16  6.7918E-17  3.8212E-13 -3.4625E-14
 -1.9035E-13  1.7323E-13 -1.8438E-15  1.6736E-15 -3.4625E-14  7.4642E-13
#      lat0       lon0       xBary       yBary       zBary        JD0
   -1.432680   19.651257   -0.411681   -0.022500   -0.898217  2452585.644793
# Heliocentric elements and errors
Epoch:              2452586.5000  =  2002/11/08
Mean Anomaly:          152.31712 +/-     0.091
Argument of Peri:      139.06475 +/-     0.085
Long of Asc Node:       86.79624 +/-     0.006
Inclination:             1.52942 +/-     0.000
Eccentricity:         0.03928953 +/-    0.0001
Semi-Major Axis:     43.15414337 +/-    0.0046
Time of Perihelion: 2408775.9799 +/-      27.1
Perihelion:          41.45863750 +/-    0.0054
Aphelion:            44.84964923 +/-    0.0057
Period (y)              283.4927 +/-      0.05
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           41.91271736 +/-    0.0011
Ecliptic Y           15.40983550 +/-    0.0004
Ecliptic Z           -1.09431347 +/-    0.0000
Ecliptic XDOT        -0.00082977 +/-    0.0000
Ecliptic YDOT         0.00238805 +/-    0.0000
Ecliptic ZDOT         0.00002568 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   44.66917756 +/-    0.0011
Geocenter to KBO     43.76827729 +/-    0.0012
# Hcoef:  6.32

The following table shows the complete astrometric record for 02VB131. 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 (02VB131) followed by the observatory code and reference code for the source of the astrometry.

2002 11  07.14405  01 14 44.40   +06 21 38.9   22.4R 02VB131   695  Cg8319      
2002 11  07.25151  01 14 43.99   +06 21 36.3         02VB131   695  Cg8319      
2002 11  30.24813  01 13 28.01   +06 14 28.5   22.5R 02VB131   568  Cg8319      
2002 11  30.33764  01 13 27.78   +06 14 27.1         02VB131   568  Cg8319      
2002 12  01.23981  01 13 25.42   +06 14 14.5         02VB131   568  Cg8319      
2002 12  05.08615  01 13 16.04   +06 13 24.9   22.1R 02VB131   695  Ch0066      
2002 12  05.19676  01 13 15.80   +06 13 23.6         02VB131   695  Ch0066      
2003 10  23.16123  01 20 16.60   +06 55 41.4   22.2R 02VB131   695  Cl5726      
2003 10  23.25665  01 20 16.19   +06 55 39.0         02VB131   695  Cl5726      
2004 09  17.49232  01 27 12.11   +07 37 56.3   22.2R 02VB131   568  Cl5726      
2004 09  17.53062  01 27 11.97   +07 37 55.3         02VB131   568  Cl5726      
2005 09  28.311998 01 31 00.75   +08 01 10.6   22.9V 02VB131   645  C~2Jx8      
2005 09  28.312827 01 31 00.75   +08 01 10.7   22.8V 02VB131   645  C~2Jx8      
2005 09  28.315315 01 31 00.77   +08 01 10.6   23.1V 02VB131   645  C~2Jx8      
2005 10  11.381197 01 30 05.59   +07 55 43.9   22.6V 02VB131   645  C~2Jx8      
2005 10  11.382026 01 30 05.58   +07 55 43.7   22.1V 02VB131   645  C~2Jx8      
2005 10  11.384514 01 30 05.59   +07 55 43.8   23.8V 02VB131   645  C~2Jx8      
2008 11  01.388761 01 42 06.61   +09 08 20.5         02VB131   645  C~1GLM      
2008 11  01.389590 01 42 06.60   +09 08 20.4         02VB131   645  C~1GLM      
2008 11  01.392078 01 42 06.59   +09 08 20.4         02VB131   645  C~1GLM      
2008 12  01.12214  01 40 14.56   +08 58 15.0   23.2R 02VB131   688  C~02MM      
2008 12  01.31955  01 40 14.01   +08 58 12.1         02VB131   688  C~02MM      
2013 10  07.37876  02 06 46.94   +11 29 37.8   22.6R 02VB131   695  C~0zdT      
2013 10  07.43946  02 06 46.66   +11 29 36.8         02VB131   695  C~0zdT      
2013 10  07.50035  02 06 46.41   +11 29 35.0         02VB131   695  C~0zdT      

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     0.06       0.00     0.17
  2   0.0003      0.00     0.25       0.00    -0.03
  3   0.0633      0.00     0.11       0.00    -0.00
  4   0.0635      0.00     0.30       0.00    -0.13
  5   0.0660      0.00    -0.04       0.00    -0.10
  6   0.0765      0.00    -0.35       0.00     0.15
  7   0.0768      0.00    -0.03       0.00     0.18
  8   0.9583      0.00    -0.29       0.00     0.01
  9   0.9586      0.00    -0.21       0.00     0.01
 10   1.8627      0.00    -0.21       0.00     0.14
 11   1.8628      0.00    -0.13       0.00     0.02
 12   2.8916      0.00    -0.15       0.00    -0.18
 13   2.8916      0.00    -0.10       0.00    -0.06
 14   2.8916      0.00     0.36       0.00    -0.09
 15   2.9274      0.00     0.08       0.00     0.10
 16   2.9274      0.00    -0.01       0.00    -0.08
 17   2.9274      0.00     0.30       0.00     0.08
 18   5.9856      0.00     0.42       0.00    -0.31
 19   5.9856      0.00     0.32       0.00    -0.39
 20   5.9856      0.00     0.33       0.00    -0.33
 21   6.0670      0.00    -0.86       0.00     0.19
 22   6.0676      0.00     0.07       0.00     0.42
 23  10.9165      0.00     0.16       0.00    -0.00
 24  10.9166      0.00    -0.21       0.00     0.36
 25  10.9168      0.00    -0.12       0.00    -0.08

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.

02VB131    quality flag:3

Type:      CLASSICAL CLASSICAL CLASSICAL

axisobj        43.469    43.469    43.469
ecceobj         0.034     0.034     0.034
incobj          1.529     1.529     1.529
qmin           40.830    40.823    40.828
qmax           45.704    45.699    45.719
amean          43.180    43.180    43.180
amin           42.850    42.849    42.849
amax           43.523    43.524    43.523
emean           0.032     0.032     0.032
emin            0.013     0.013     0.013
emax            0.051     0.051     0.051
imean           0.935     0.935     0.935
imin            0.370     0.370     0.370
imax            1.315     1.315     1.315
excite_mean     0.036     0.036     0.036
fracstop        1.000     1.000     1.000
cjmean          3.090     3.090     3.090

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       167.2     167.3     167.2
kozaiamp        179.9     179.9     180.0