Orbit Fit and Astrometric record for 02VC131

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: 02VC131   
# Created Sat Oct 21 01:37:21 2017
# Orbit generated from Bernstein formalism
# Fitting    5 observations of    5
# Arc:  24.08d
# First observation: 2002/11/07
#  Last observation: 2002/12/01
Preliminary a, adot, b, bdot, g, gdot:
  -0.000000   0.017065   0.000001   0.000547   0.021256   0.000000
# WARNING MRQMIN stopped after  13 iterations -- oscilliatory solution
# WARNING Fitting with energy constraint
# WARNING MRQMIN stopped after  13 iterations -- oscilliatory solution
# Chi-squared of fit:     2.82 DOF:    5 RMS:  0.13
# Min/Max residuals:    -0.27    0.21
# Exact a, adot, b, bdot, g, gdot:
  1.334296E-05  1.824673E-02  1.010623E-06  5.198241E-04  2.158926E-02 -1.917931E-03
# Covariance matrix:
  5.9440E-12  6.8319E-09 -1.3471E-13 -1.8731E-10  1.3894E-09  1.3002E-09
  6.8319E-09  8.9650E-06 -1.7647E-10 -2.4534E-07  1.8208E-06  2.2694E-06
 -1.3471E-13 -1.7647E-10  7.2428E-13 -6.4545E-12 -3.5846E-11 -4.7361E-11
 -1.8731E-10 -2.4534E-07 -6.4545E-12  7.0122E-09 -4.9860E-08 -8.7522E-08
  1.3894E-09  1.8208E-06 -3.5846E-11 -4.9860E-08  3.6932E-07  1.9212E-08
  1.3002E-09  2.2694E-06 -4.7361E-11 -8.7522E-08  1.9212E-08 -3.8706E-04
#      lat0       lon0       xBary       yBary       zBary        JD0
   -1.987541   18.747120   -0.425940   -0.030965   -0.891288  2452585.653273
# Heliocentric elements and errors
Epoch:              2452580.5000  =  2002/11/02
Mean Anomaly:          221.45359 +/-   315.109
Argument of Peri:       99.67041 +/-    99.670
Long of Asc Node:       69.00223 +/-     9.032
Inclination:             2.55469 +/-     0.342
Eccentricity:         0.16725446 +/-    0.1673
Semi-Major Axis:     41.57733630 +/-   41.5773
Time of Perihelion: 2490266.1659 +/- 9999999.9
Perihelion:          34.62334125 +/-   35.3148
Aphelion:            48.53133134 +/-   49.0270
Period (y)              268.0978 +/-    402.15
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           44.54197918 +/-    1.2340
Ecliptic Y           15.57324110 +/-    0.4187
Ecliptic Z           -1.60638925 +/-    0.0452
Ecliptic XDOT        -0.00097915 +/-   -0.0010
Ecliptic YDOT         0.00211038 +/-    0.0021
Ecliptic ZDOT         0.00007453 +/-    0.0001
# Distances at JD0 (AU)
Heliocenter to KBO   47.21328451 +/-    1.1723
Geocenter to KBO     46.31932024 +/-    1.3038
# Hcoef:  6.32

The following table shows the complete astrometric record for 02VC131. 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 (02VC131) followed by the observatory code and reference code for the source of the astrometry.

2002 11  07.15253  01 12 13.05   +05 30 20.6   22.5R 02VC131   695  Cg8319      
2002 11  07.25970  01 12 12.64   +05 30 18.6         02VC131   695  Cg8319      
2002 11  30.23788  01 11 00.37   +05 23 44.9   23.0R 02VC131   568  Cg8319      
2002 11  30.32760  01 11 00.13   +05 23 43.7         02VC131   568  Cg8319      
2002 12  01.22988  01 10 57.88   +05 23 32.3         02VC131   568  Cg8319      

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     0.00       0.00    -0.13
  2   0.0003     -6.42    -0.02       0.47     0.13
  3   0.0632  -1154.30     0.21      44.71    -0.04
  4   0.0634  -1158.08     0.08      44.95    -0.04
  5   0.0659  -1193.49    -0.27      47.13     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.

02VC131    quality flag:0

Type:      ERR2LARGE ERR2LARGE ERR2LARGE

axisobj         0.000     0.000     0.000
ecceobj        -1.000    -1.000    -1.000
incobj         -1.000    -1.000    -1.000
qmin            0.000     0.000     0.000
qmax            0.000     0.000     0.000
amean           0.000     0.000     0.000
amin            0.000     0.000     0.000
amax            0.000     0.000     0.000
emean           0.000     0.000     0.000
emin            0.000     0.000     0.000
emax            0.000     0.000     0.000
imean           0.000     0.000     0.000
imin            0.000     0.000     0.000
imax            0.000     0.000     0.000
excite_mean     0.000     0.000     0.000
fracstop        0.000     0.000     0.000
cjmean          0.000     0.000     0.000

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         0.0       0.0       0.0
kozaiamp          0.0       0.0       0.0