Orbit Fit and Astrometric record for 130391

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: 130391    
# Created Sun Oct 26 01:36:43 2014
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting   22 observations of   22
# Arc:   8.04y
# First observation: 1999/04/17
#  Last observation: 2007/05/02
# Chi-squared of fit:    34.24 DOF:   38 RMS:  0.22
# Min/Max residuals:    -0.60    0.63
# Exact a, adot, b, bdot, g, gdot:
  1.799343E-05  3.359250E-02 -7.609303E-06 -1.453737E-02  3.010936E-02  1.015318E-03
# Covariance matrix:
  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00
  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00
  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00
  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00
  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00
  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00
#      lat0       lon0       xBary       yBary       zBary        JD0
    1.995621 -138.064771    0.264972    0.033735   -0.975448  2451285.865553
# Heliocentric elements and errors
Epoch:              2451286.5000  =  1999/04/18
Mean Anomaly:            2.90549 +/-     0.000
Argument of Peri:      169.82192 +/-     0.000
Long of Asc Node:       45.96282 +/-     0.000
Inclination:            23.50954 +/-     0.000
Eccentricity:         0.27542566 +/-    0.0000
Semi-Major Axis:     47.13179547 +/-    0.0000
Time of Perihelion: 2450332.6355 +/-       0.0
Perihelion:          34.15048969 +/-    0.0000
Aphelion:            60.11310124 +/-    0.0000
Period (y)              323.5781 +/-      0.00
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -25.58624682 +/-    0.0000
Ecliptic Y          -22.63691946 +/-    0.0000
Ecliptic Z            1.15633471 +/-    0.0000
Ecliptic XDOT         0.00193602 +/-    0.0000
Ecliptic YDOT        -0.00235596 +/-    0.0000
Ecliptic ZDOT        -0.00131785 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   34.18219406 +/-    0.0000
Geocenter to KBO     33.21227252 +/-    0.0000
# Hcoef:  7.97

The following table shows the complete astrometric record for 130391. 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 (130391) followed by the observatory code and reference code for the source of the astrometry.

1999 04  17.36481  14 40 30.29   -13 30 58.2   24.1R 130391    695  Ch1267      
1999 04  17.40913  14 40 30.06   -13 30 57.4         130391    695  Ch1267      
2000 05  06.04674  14 45 08.23   -14 47 23.5   22.8R 130391    809  Cb5923      
2000 05  06.14545  14 45 07.64   -14 47 21.3         130391    809  Cb5923      
2000 05  06.24139  14 45 07.05   -14 47 19.6         130391    809  Cb5923      
2000 05  06.33509  14 45 06.47   -14 47 17.9         130391    809  Cb5923      
2000 05  07.30056  14 45 00.81   -14 46 59.6         130391    809  Cb5923      
2000 06  24.96979  14 41 01.58   -14 36 23.6         130391    950  Cb7059      
2000 06  25.01103  14 41 01.45   -14 36 23.6         130391    950  Cb7059      
2001 03  23.50481  14 55 33.92   -16 19 45.1         130391    695  Cd0028      
2001 03  29.47964  14 55 08.71   -16 18 44.1         130391    695  Cd0028      
2001 03  30.50000  14 55 04.11   -16 18 32.6         130391    695  Cd0028      
2001 03  31.46321  14 54 59.74   -16 18 21.4         130391    695  Cd0028      
2001 03  31.48365  14 54 59.63   -16 18 21.0         130391    695  Cd0028      
2001 03  31.50325  14 54 59.53   -16 18 20.7         130391    695  Cd0028      
2006 04  27.26868  15 26 46.94   -22 42 18.6   21.7R 130391    807  Cr3553      
2006 04  27.34068  15 26 46.50   -22 42 17.8         130391    807  Cr3553      
2006 04  28.24437  15 26 41.25   -22 42 08.8         130391    807  Cr3553      
2007 05  02.58087  15 33 23.07   -23 55 24.9   23.2R 130391    250  S~06HE      
2007 05  02.58850  15 33 23.03   -23 55 24.8         130391    250  S~06HE      
2007 05  02.59545  15 33 22.99   -23 55 24.8         130391    250  S~06HE      
2007 05  02.60239  15 33 22.94   -23 55 24.7         130391    250  S~06HE      

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    -0.25       0.00     0.40
  2   0.0001      0.00     0.33       0.00    -0.02
  3   1.0532      0.00     0.27       0.00    -0.60
  4   1.0535      0.00     0.27       0.00    -0.16
  5   1.0537      0.00     0.05       0.00    -0.20
  6   1.0540      0.00    -0.26       0.00    -0.22
  7   1.0566      0.00     0.12       0.00     0.63
  8   1.1899      0.00    -0.08       0.00     0.17
  9   1.1900      0.00     0.03       0.00    -0.05
 10   1.9333      0.00    -0.17       0.00    -0.10
 11   1.9497      0.00    -0.03       0.00     0.10
 12   1.9525      0.00    -0.14       0.00     0.02
 13   1.9551      0.00     0.34       0.00    -0.01
 14   1.9552      0.00     0.13       0.00     0.15
 15   1.9552      0.00     0.01       0.00     0.21
 16   7.0278      0.00     0.30       0.00    -0.12
 17   7.0280      0.00     0.09       0.00    -0.05
 18   7.0305      0.00     0.32       0.00    -0.20
 19   8.0417      0.00    -0.16       0.00    -0.09
 20   8.0417      0.00    -0.07       0.00    -0.06
 21   8.0417      0.00    -0.05       0.00    -0.13
 22   8.0417      0.00    -0.18       0.00    -0.10

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.