Orbit Fit and Astrometric record for 02VF130

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: 02VF130   
# Created Fri Dec 15 02:37:12 2017
# Orbit generated from Bernstein formalism
# Fitting   20 observations of   21
# Arc:   5.99y
# First observation: 2002/11/07
#  Last observation: 2008/11/03
Preliminary a, adot, b, bdot, g, gdot:
   0.000054   0.022538  -0.000017  -0.007826   0.024128   0.000000
# Chi-squared of fit:    16.97 DOF:   34 RMS:  0.16
# Min/Max residuals:    -0.31    0.35
# Exact a, adot, b, bdot, g, gdot:
  1.558068E-05  2.270844E-02 -5.452173E-06 -7.891341E-03  2.412251E-02  2.340965E-03
# Covariance matrix:
  3.6833E-13 -2.2213E-13 -1.5326E-14  5.4477E-14  5.1212E-13 -1.1502E-12
 -2.2213E-13  4.0472E-13  3.5125E-14 -1.2814E-13 -2.2296E-13  2.7086E-12
 -1.5326E-14  3.5125E-14  1.0987E-13 -3.3177E-14 -1.3243E-14  2.4758E-13
  5.4477E-14 -1.2814E-13 -3.3177E-14  5.6783E-14  4.4723E-14 -9.0538E-13
  5.1212E-13 -2.2296E-13 -1.3243E-14  4.4723E-14  1.1240E-12 -9.4198E-13
 -1.1502E-12  2.7086E-12  2.4758E-13 -9.0538E-13 -9.4198E-13  1.9140E-11
#      lat0       lon0       xBary       yBary       zBary        JD0
    4.229831   66.241156    0.366290    0.067682   -0.915381  2452585.859333
# Heliocentric elements and errors
Epoch:              2452580.5000  =  2002/11/02
Mean Anomaly:           42.45224 +/-     0.045
Argument of Peri:      114.87686 +/-     0.058
Long of Asc Node:      257.54869 +/-     0.000
Inclination:            19.48154 +/-     0.000
Eccentricity:         0.11775329 +/-    0.0002
Semi-Major Axis:     46.04337966 +/-    0.0113
Time of Perihelion: 2439123.5292 +/-      13.2
Perihelion:          40.62162036 +/-    0.0147
Aphelion:            51.46513895 +/-    0.0166
Period (y)              312.4345 +/-      0.12
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           17.35975033 +/-    0.0008
Ecliptic Y           38.53613829 +/-    0.0017
Ecliptic Z            3.05739582 +/-    0.0001
Ecliptic XDOT        -0.00223300 +/-    0.0000
Ecliptic YDOT         0.00133792 +/-    0.0000
Ecliptic ZDOT        -0.00087340 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   42.37620269 +/-    0.0015
Geocenter to KBO     41.45504792 +/-    0.0018
# Hcoef:  6.91

The following table shows the complete astrometric record for 02VF130. 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 (02VF130) followed by the observatory code and reference code for the source of the astrometry.

2002 11  07.35859  04 14 15.17   +25 30 53.4   23.2R 02VF130   695  Cg8319      
2002 11  07.45565  04 14 14.70   +25 30 52.0         02VF130   695  Cg8319      
2002 11  08.46612  04 14 09.71   +25 30 37.4         02VF130   695  C47440      
2002 12  02.44669  04 12 04.64   +25 23 59.9   23.2R 02VF130   568  Ch0066      
2002 12  02.49604  04 12 04.37   +25 23 59.1         02VF130   568  Ch0066      
2002 12  05.16992  04 11 50.31   +25 23 10.2   22.8R 02VF130   695  Ch0066      
2002 12  05.28068  04 11 49.73   +25 23 07.8         02VF130   695  Ch0066      
2002 12  06.13840  04 11 45.25   +25 22 51.8         02VF130   695  Ch0066      
2002 12  06.23285  04 11 44.72   +25 22 50.4         02VF130   695  Ch0066      
2002 12  31.207008 04 09 45.00   +25 14 56.9   22.6V 02VF130   645  C~2Jx8      
2002 12  31.207838 04 09 44.99   +25 14 56.8   22.3V 02VF130   645  C~2Jx8      
2002 12  31.210325 04 09 44.98   +25 14 56.8   23.5V 02VF130   645  C~2Jx8      
2003 11  20.32791  04 19 11.65   +25 14 32.7   22.6R 02VF130   695  Cl9844      
2003 11  20.40682  04 19 11.26   +25 14 31.6         02VF130   695  Cl9844      
2004 11  09.44702  04 26 01.07   +25 03 01.4   22.9R 02VF130   695  Cl9844      
2004 11  10.39197  04 25 56.38   +25 02 48.9         02VF130   695  Cl9844      
2004 11  10.46745  04 25 56.01   +25 02 47.8         02VF130   695  Cl9844      
2008 11  03.81624  04 49 43.28   +23 59 51.0   23.7R 02VF130   250  S~06Aa      
2008 11  03.82249  04 49 43.25   +23 59 51.0         02VF130   250  S~06Aa      
2008 11  03.82944  04 49 43.22   +23 59 50.9         02VF130   250  S~06Aa      
2008 11  03.83569  04 49 43.19   +23 59 50.9         02VF130   250  S~06Aa      

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    -0.14       0.00     0.06
  2   0.0003     -6.51     0.05      -0.25     0.02
  3   0.0030    -75.58     0.01      -2.61    -0.05
  4   0.0687  -1813.41    -0.19     -89.30    -0.13
  5   0.0688  -1817.15    -0.23     -89.42    -0.01
  6   0.0761  -2013.41     0.04    -102.87     0.26
  7   0.0764  -2021.57     0.10    -103.79    -0.13
  8   0.0788  -2084.19     0.17    -108.47    -0.21
  9   0.0791  -2091.51    -0.16    -108.54     0.19
 10   0.1474  -3774.62     0.08    -275.23    -0.24
 11   0.1474  -3774.77    -0.02    -275.30    -0.31
 12   0.1474  -3774.91    -0.00    -275.28    -0.26
 13   1.0348   3788.23    -0.08   -1661.32     0.19
 14   1.0350   3782.83     0.34   -1661.52     0.28
 15   2.0071   9168.00 (   0.63)  -3247.34 (  -0.02)
 16   2.0097   9102.96     0.01   -3249.72     0.35
 17   2.0099   9097.81     0.10   -3250.02     0.27
 18   5.9917  28073.38     0.01   -9677.01    -0.12
 19   5.9917  28072.96    -0.02   -9676.96    -0.05
 20   5.9917  28072.53    -0.02   -9677.01    -0.08
 21   5.9917  28072.12    -0.06   -9676.96    -0.01

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.

02VF130    quality flag:3

Type:       SCATEXTD  SCATEXTD  SCATEXTD

axisobj        46.201    46.236    46.167
ecceobj         0.123     0.123     0.122
incobj         19.482    19.481    19.482
qmin           39.873    39.890    39.834
qmax           52.081    52.205    52.007
amean          45.854    45.888    45.820
amin           45.489    45.508    45.448
amax           46.268    46.288    46.227
emean           0.114     0.114     0.113
emin            0.102     0.103     0.102
emax            0.127     0.128     0.126
imean          21.094    21.093    21.093
imin           20.750    20.743    20.745
imax           21.386    21.387    21.392
excite_mean     0.377     0.378     0.377
fracstop        1.000     1.000     1.000
cjmean          2.943     2.944     2.943

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     180.7     180.1
kozaiamp        180.0     180.0     180.0