Orbit Fit and Astrometric record for 02VF131

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: 02VF131   
# Created Sun Dec  5 02:09:29 2021
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting     13 observations of     13
# Arc:  17.23y
# First observation: 2002/11/07
#  Last observation: 2020/01/30
# Chi-squared of fit:    17.87 DOF:     20 RMS:  0.21
# Min/Max residuals:    -0.40    0.45
# Exact a, adot, b, bdot, g, gdot:
  1.430408E-05  2.148120E-02 -9.022630E-07  6.542584E-05  2.291386E-02 -1.057612E-03
# Covariance matrix:
  5.5465E-13 -3.0929E-13  3.4513E-15 -1.8570E-15  8.4099E-13 -9.5176E-13
 -3.0929E-13  2.4451E-13 -2.6150E-15  1.4525E-15 -6.1193E-13  7.6835E-13
  3.4513E-15 -2.6150E-15  1.8113E-13 -1.3235E-14  8.6499E-15 -8.5671E-15
 -1.8570E-15  1.4525E-15 -1.3235E-14  2.4036E-15 -4.3214E-15  4.6951E-15
  8.4099E-13 -6.1193E-13  8.6499E-15 -4.3214E-15  2.2924E-12 -2.0401E-12
 -9.5176E-13  7.6835E-13 -8.5671E-15  4.6951E-15 -2.0401E-12  2.4512E-12
#      lat0       lon0       xBary       yBary       zBary        JD0
   -1.835843   72.740342    0.467346   -0.027914   -0.870318  2452585.890203
# Heliocentric elements and errors
Epoch:              2452586.5000  =  2002/11/08
Mean Anomaly:          272.08170 +/-     0.255
Argument of Peri:        9.99377 +/-     0.214
Long of Asc Node:      157.12467 +/-     0.004
Inclination:             1.80662 +/-     0.000
Eccentricity:         0.06161807 +/-    0.0001
Semi-Major Axis:     44.44964503 +/-    0.0130
Time of Perihelion: 2479021.3988 +/-      84.7
Perihelion:          41.71074369 +/-    0.0127
Aphelion:            47.18854637 +/-    0.0142
Period (y)              296.3539 +/-      0.13
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           13.64506066 +/-    0.0009
Ecliptic Y           42.35319471 +/-    0.0027
Ecliptic Z           -1.39814433 +/-    0.0001
Ecliptic XDOT        -0.00249593 +/-    0.0000
Ecliptic YDOT         0.00063772 +/-    0.0000
Ecliptic ZDOT         0.00001207 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   44.51897507 +/-    0.0026
Geocenter to KBO     43.64177814 +/-    0.0029
# Hcoef:  6.68

The following table shows the complete astrometric record for 02VF131. 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 (02VF131) followed by the observatory code and reference code for the source of the astrometry.

2002 11  07.38946  04 46 10.09   +20 30 15.5   22.5R 02VF131   695  Cg8319      
2002 11  07.48765  04 46 09.66   +20 30 14.6         02VF131   695  Cg8319      
2002 11  30.44556  04 44 21.73   +20 26 44.0   22.8R 02VF131   568  Cg8319      
2002 11  30.49346  04 44 21.50   +20 26 43.4         02VF131   568  Cg8319      
2002 12  01.44430  04 44 16.80   +20 26 34.8         02VF131   568  Cg8319      
2004 11  10.40749  04 56 23.98   +20 47 44.0   23.2R 02VF131   695  Cm1727      
2004 11  10.48309  04 56 23.61   +20 47 43.6         02VF131   695  Cm1727      
2004 11  18.49385  04 55 47.24   +20 46 40.0   22.5R 02VF131   568  Cm1727      
2004 11  18.54004  04 55 46.98   +20 46 39.7         02VF131   568  Cm1727      
2014 10  22.40766  05 50 59.79   +21 42 04.5   22.3R 02VF131   G37  C~1BxD      
2014 10  22.49927  05 50 59.57   +21 42 04.3         02VF131   G37  C~1BxD      
2020 01  30.359033 06 11 13.040  +21 45 47.53  23.3G 02VF131   T12  C~3iF5      
2020 01  30.396667 06 11 12.886  +21 45 47.56  23.2G 02VF131   T12  C~3iF5      

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     0.09       0.00     0.21
     2   0.0003      0.00     0.06       0.00     0.19
     3   0.0631      0.00    -0.29       0.00    -0.24
     4   0.0633      0.00    -0.11       0.00    -0.40
     5   0.0659      0.00     0.11       0.00    -0.26
     6   2.0096      0.00     0.20       0.00    -0.13
     7   2.0098      0.00    -0.31       0.00     0.07
     8   2.0318      0.00     0.45       0.00     0.24
     9   2.0319      0.00    -0.14       0.00     0.31
    10  11.9562      0.00    -0.00       0.00     0.08
    11  11.9565      0.00    -0.16       0.00     0.10
    12  17.2292      0.00     0.06       0.00    -0.06
    13  17.2293      0.00     0.03       0.00    -0.12

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.

02VF131    quality flag:3

Type:      CLASSICAL CLASSICAL CLASSICAL

axisobj        44.485    44.485    44.485
ecceobj         0.057     0.057     0.057
incobj          1.807     1.807     1.807
qmin           40.759    40.777    40.759
qmax           47.852    47.843    47.859
amean          44.220    44.220    44.220
amin           43.869    43.869    43.871
amax           44.581    44.582    44.587
emean           0.059     0.059     0.059
emin            0.043     0.043     0.043
emax            0.074     0.074     0.074
imean           1.963     1.963     1.963
imin            1.290     1.290     1.291
imax            2.613     2.613     2.613
excite_mean     0.068     0.068     0.068
fracstop        1.000     1.000     1.000
cjmean          3.099     3.099     3.099

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       180.9     180.9     181.0
kozaiamp        180.0     180.0     179.9