Orbit Fit and Astrometric record for 02VX130

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: 02VX130   
# Created Mon Oct 23 01:37:22 2017
# Orbit generated from Bernstein formalism
# Fitting   20 observations of   21
# Arc:   5.96y
# First observation: 2002/11/07
#  Last observation: 2008/10/22
Preliminary a, adot, b, bdot, g, gdot:
  -0.001115   0.043144  -0.000004  -0.000073   0.032153   0.000000
# Chi-squared of fit:    34.68 DOF:   34 RMS:  0.23
# Min/Max residuals:    -0.63    0.52
# Exact a, adot, b, bdot, g, gdot:
  2.081594E-05  4.190257E-02 -1.192927E-06 -7.352718E-05  3.351901E-02 -1.769330E-03
# Covariance matrix:
  3.7882E-13 -3.6839E-13 -1.3110E-16  7.3322E-16  1.0052E-13 -1.0543E-12
 -3.6839E-13  5.1722E-13  3.9155E-16 -1.0871E-15 -7.4961E-14  1.6170E-12
 -1.3110E-16  3.9155E-16  1.4866E-13 -3.1389E-14  1.2702E-15  1.9483E-15
  7.3322E-16 -1.0871E-15 -3.1389E-14  1.2927E-14  2.3040E-16 -3.4498E-15
  1.0052E-13 -7.4961E-14  1.2702E-15  2.3040E-16  5.2419E-13  2.7210E-14
 -1.0543E-12  1.6170E-12  1.9483E-15 -3.4498E-15  2.7210E-14  5.3245E-12
#      lat0       lon0       xBary       yBary       zBary        JD0
    1.358358   31.368795   -0.221410    0.022802   -0.962925  2452585.690753
# Heliocentric elements and errors
Epoch:              2452580.5000  =  2002/11/02
Mean Anomaly:          352.79615 +/-     0.012
Argument of Peri:      106.20888 +/-     0.020
Long of Asc Node:      297.21248 +/-     0.007
Inclination:             1.31994 +/-     0.000
Eccentricity:         0.22529672 +/-    0.0001
Semi-Major Axis:     39.60621079 +/-    0.0054
Time of Perihelion: 2454402.3191 +/-       2.9
Perihelion:          30.68306160 +/-    0.0055
Aphelion:            48.52935998 +/-    0.0075
Period (y)              249.2603 +/-      0.05
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           26.17185296 +/-    0.0006
Ecliptic Y           16.22142522 +/-    0.0003
Ecliptic Z            0.70720794 +/-    0.0000
Ecliptic XDOT        -0.00191231 +/-    0.0000
Ecliptic YDOT         0.00284378 +/-    0.0000
Ecliptic ZDOT        -0.00000922 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   30.79936146 +/-    0.0005
Geocenter to KBO     29.83381772 +/-    0.0006
# Hcoef:  8.35

The following table shows the complete astrometric record for 02VX130. 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 (02VX130) followed by the observatory code and reference code for the source of the astrometry.

2002 11  07.19001  01 54 56.64   +13 13 25.0   22.3R 02VX130   695  Cg8319      
2002 11  07.29686  01 54 55.98   +13 13 21.5         02VX130   695  Cg8319      
2002 12  01.34477  01 52 48.63   +13 01 14.9   23.0R 02VX130   568  Cg8319      
2002 12  02.25460  01 52 44.64   +13 00 49.4         02VX130   568  Cg8319      
2002 12  02.31430  01 52 44.38   +13 00 47.8         02VX130   568  Cg8319      
2003 10  23.18857  02 05 48.67   +14 11 12.9   22.3R 02VX130   695  Cj4694      
2003 10  23.28356  02 05 48.08   +14 11 09.9         02VX130   695  Cj4694      
2003 11  20.14996  02 03 00.52   +13 56 09.5   22.9R 02VX130   695  Cj4694      
2003 11  20.23472  02 03 00.06   +13 56 07.1         02VX130   695  Cj4694      
2003 11  24.16271  02 02 38.93   +13 54 09.6   23.2R 02VX130   695  Cj4694      
2003 11  24.23152  02 02 38.59   +13 54 07.7         02VX130   695  Cj4694      
2003 12  17.26629  02 00 59.86   +13 44 37.1   23.2R 02VX130   568  Ck9585      
2003 12  17.33675  02 00 59.61   +13 44 35.6         02VX130   568  Ck9585      
2004 09  17.47950  02 18 23.03   +15 14 37.0   23.7R 02VX130   568  Cl5726      
2004 09  17.51728  02 18 22.89   +15 14 36.2         02VX130   568  Cl5726      
2008 08  31.06699  02 57 09.47   +18 09 58.9   23.9R 02VX130   250  S~06Aa      
2008 08  31.07393  02 57 09.46   +18 09 58.8         02VX130   250  S~06Aa      
2008 08  31.08018  02 57 09.45   +18 09 58.8         02VX130   250  S~06Aa      
2008 08  31.08713  02 57 09.44   +18 09 58.8         02VX130   250  S~06Aa      
2008 10  22.26115  02 53 35.14   +17 56 06.4   22.4r 02VX130   695  C~0gM1      
2008 10  22.29270  02 53 34.95   +17 56 05.7   22.5r 02VX130   695  C~0gM1      

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    -0.22       0.00     0.24
  2   0.0003    -10.25    -0.40       0.08     0.34
  3   0.0661  -2007.33 (   0.67)    -29.68 (   1.19)
  4   0.0686  -2070.88     0.26     -33.09    -0.53
  5   0.0688  -2075.00     0.35     -33.26    -0.63
  6   0.9582  10122.97    -0.03      -8.94     0.04
  7   0.9585  10113.86     0.10      -8.86     0.05
  8   1.0348   7510.11    -0.25     -27.40    -0.03
  9   1.0350   7502.99     0.02     -27.37     0.06
 10   1.0458   7173.30     0.09     -32.81     0.16
 11   1.0460   7167.99     0.52     -32.91     0.13
 12   1.1090   5619.99    -0.07     -76.80     0.33
 13   1.1092   5616.05    -0.37     -76.96     0.30
 14   1.8625  21781.48    -0.15     -52.43    -0.11
 15   1.8626  21779.28     0.18     -52.53    -0.30
 16   5.8149  58209.74     0.06    -145.97     0.02
 17   5.8149  58209.57     0.02    -146.03    -0.05
 18   5.8149  58209.42     0.01    -145.99    -0.03
 19   5.8149  58209.27     0.00    -145.95     0.00
 20   5.9578  54804.48    -0.11     -83.45    -0.03
 21   5.9578  54801.49     0.02     -83.35     0.05

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.

02VX130    quality flag:3

Type:           3:2E      3:2E      3:2E

axisobj        39.905    39.921    39.888
ecceobj         0.231     0.231     0.230
incobj          1.320     1.320     1.320
qmin           29.896    29.917    29.892
qmax           49.464    49.464    49.437
amean          39.455    39.455    39.455
amin           39.078    39.053    39.097
amax           39.906    39.926    39.890
emean           0.223     0.223     0.223
emin            0.203     0.205     0.203
emax            0.240     0.239     0.240
imean           1.680     1.716     1.655
imin            0.470     0.710     0.334
imax            3.137     3.143     3.138
excite_mean     0.225     0.225     0.225
fracstop        1.000     1.000     1.000
cjmean          2.993     2.993     2.993

libcent 0       179.6     179.9     179.8
libamp  0        45.3      53.5      37.8
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       180.7     181.6     180.3
kozaiamp        180.0     180.0     180.0