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 Tue Oct 17 01:37:21 2017
# Orbit generated from Bernstein formalism
# Fitting   25 observations of   25
# Arc:  10.92y
# First observation: 2002/11/07
#  Last observation: 2013/10/07
Preliminary a, adot, b, bdot, g, gdot:
  -0.000516   0.021409  -0.000006   0.000221   0.023170   0.000000
# Chi-squared of fit:    45.85 DOF:   44 RMS:  0.24
# Min/Max residuals:    -0.73    0.49
# Exact a, adot, b, bdot, g, gdot:
  1.401988E-05  2.110267E-02 -5.195812E-07  2.187450E-04  2.284766E-02  2.433849E-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:              2452580.5000  =  2002/11/02
Mean Anomaly:          152.29208 +/-     0.091
Argument of Peri:      139.06880 +/-     0.085
Long of Asc Node:       86.79612 +/-     0.006
Inclination:             1.52942 +/-     0.000
Eccentricity:         0.03928909 +/-    0.0001
Semi-Major Axis:     43.15412303 +/-    0.0046
Time of Perihelion: 2408777.2138 +/-      25.2
Perihelion:          41.45863676 +/-    0.0054
Aphelion:            44.84960929 +/-    0.0057
Period (y)              283.4925 +/-      0.05
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           41.91263087 +/-    0.0011
Ecliptic Y           15.40980513 +/-    0.0004
Ecliptic Z           -1.09431139 +/-    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   44.66909712 +/-    0.0011
Geocenter to KBO     43.76815239 +/-    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     0.12       0.00     0.14
  2   0.0003     -6.64     0.22      -0.10    -0.12
  3   0.0633  -1217.16     0.10      31.01    -0.04
  4   0.0635  -1220.86     0.23      31.01    -0.23
  5   0.0660  -1258.21    -0.08      32.63    -0.07
  6   0.0765  -1406.46    -0.26      39.51     0.27
  7   0.0768  -1410.26     0.04      39.65     0.18
  8   0.9583   5355.48    -0.27      33.62     0.11
  9   0.9586   5348.92    -0.20      33.68     0.09
 10   1.8627  12049.64    -0.15      82.58     0.21
 11   1.8628  12047.33    -0.12      82.42     0.06
 12   2.8916  15738.81    -0.21     121.97    -0.11
 13   2.8916  15738.85    -0.12     122.07    -0.02
 14   2.8916  15739.09     0.29     121.86    -0.22
 15   2.9274  14851.83     0.11     120.61     0.06
 16   2.9274  14851.62    -0.05     120.48    -0.07
 17   2.9274  14851.79     0.30     120.51    -0.03
 18   5.9856  26518.62     0.27     265.96    -0.45
 19   5.9856  26518.44     0.15     265.92    -0.49
 20   5.9856  26518.30     0.18     265.97    -0.44
 21   6.0670  24724.95    -0.73     303.52     0.49
 22   6.0676  24716.18     0.22     303.78     0.36
 23  10.9165  50795.29     0.16     487.33    -0.06
 24  10.9166  50790.82    -0.07     487.81     0.41
 25  10.9168  50786.51    -0.14     487.37    -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.

02VB131    quality flag:3

Type:      CLASSICAL CLASSICAL CLASSICAL

axisobj        43.467    43.481    43.453
ecceobj         0.034     0.034     0.034
incobj          1.529     1.529     1.529
qmin           40.836    40.840    40.770
qmax           45.702    45.730    45.590
amean          43.178    43.192    43.167
amin           42.851    42.867    42.835
amax           43.526    43.531    43.503
emean           0.032     0.032     0.032
emin            0.014     0.013     0.015
emax            0.051     0.051     0.050
imean           0.937     0.928     0.944
imin            0.371     0.360     0.383
imax            1.317     1.306     1.326
excite_mean     0.036     0.036     0.037
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     167.0     167.7
kozaiamp        180.0     179.9     180.0