Orbit Fit and Astrometric record for 119976

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: 119976    
# Created Sat Dec 16 02:36:33 2017
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting   21 observations of   21
# Arc:  12.28y
# First observation: 2002/11/07
#  Last observation: 2015/02/18
# Chi-squared of fit:   117.46 DOF:   36 RMS:  0.42
# Min/Max residuals:    -1.00    0.76
# Exact a, adot, b, bdot, g, gdot:
  2.843625E-05  1.340786E-01 -3.816473E-06 -7.928174E-03  7.105454E-02 -1.656921E-02
# 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
   -1.218057   19.204522   -0.418735   -0.019065   -0.895029  2452585.648713
# Heliocentric elements and errors
Epoch:              2452586.5000  =  2002/11/08
Mean Anomaly:          351.80408 +/-     0.000
Argument of Peri:      218.85433 +/-     0.000
Long of Asc Node:      181.88717 +/-     0.000
Inclination:             3.52303 +/-     0.000
Eccentricity:         0.38656963 +/-    0.0000
Semi-Major Axis:     24.00706790 +/-    0.0000
Time of Perihelion: 2453564.6434 +/-       0.0
Perihelion:          14.72666447 +/-    0.0000
Aphelion:            33.28747132 +/-    0.0000
Period (y)              117.6297 +/-      0.00
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           13.99407656 +/-    0.0000
Ecliptic Y            5.32365143 +/-    0.0000
Ecliptic Z           -0.29920635 +/-    0.0000
Ecliptic XDOT        -0.00231575 +/-    0.0000
Ecliptic YDOT         0.00466324 +/-    0.0000
Ecliptic ZDOT        -0.00029164 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   14.97551919 +/-    0.0000
Geocenter to KBO     14.07378736 +/-    0.0000
# Hcoef: 11.06

The following table shows the complete astrometric record for 119976. 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 (119976) followed by the observatory code and reference code for the source of the astrometry.

2002 11  07.14797  01 12 44.96   +06 23 27.5   22.0R 119976    695  Cg8319      
2002 11  07.25554  01 12 43.92   +06 23 21.0         119976    695  Cg8319      
2002 11  28.15457  01 10 01.27   +06 06 20.7   22.6R 119976    688  Cg8319      
2002 11  28.25486  01 10 00.67   +06 06 17.1         119976    688  Cg8319      
2002 12  02.17344  01 09 39.40   +06 04 05.4   22.6R 119976    688  Cg8319      
2002 12  02.26920  01 09 38.85   +06 04 02.1         119976    688  Cg8319      
2003 01  03.08198  01 09 01.98   +06 00 33.0   22.5R 119976    688  Ch0066      
2003 01  03.17440  01 09 02.25   +06 00 35.5         119976    688  Ch0066      
2003 11  24.14643  01 39 58.61   +08 35 19.6   22.1R 119976    695  Cm1727      
2003 11  24.22067  01 39 57.98   +08 35 16.3         119976    695  Cm1727      
2004 11  20.23468  02 11 03.60   +10 58 34.1   22.4R 119976    568  Cm1727      
2004 11  20.31509  02 11 02.78   +10 58 29.8         119976    568  Cm1727      
2005 09  29.40339  02 51 52.43   +13 56 13.6   22.9R 119976    688  Co3857      
2005 09  29.48598  02 51 51.81   +13 56 08.7         119976    688  Co3857      
2006 08  03.19191  03 22 46.99   +15 55 27.9   22.4R 119976    250  S~06HB      
2006 08  03.19630  03 22 47.03   +15 55 28.1         119976    250  S~06HB      
2006 08  03.20070  03 22 47.07   +15 55 28.1         119976    250  S~06HB      
2006 08  03.20510  03 22 47.10   +15 55 28.2         119976    250  S~06HB      
2015 02  18.15566  06 51 47.89   +19 18 46.6   24.3R 119976    695  C~1MUI      
2015 02  18.20306  06 51 47.57   +19 18 47.6         119976    695  C~1MUI      
2015 02  18.24837  06 51 47.26   +19 18 48.2         119976    695  C~1MUI      

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    -0.28       0.00     0.76
  2   0.0003      0.00     0.18       0.00     0.45
  3   0.0575      0.00     0.22       0.00     0.25
  4   0.0578      0.00     0.34       0.00     0.30
  5   0.0685      0.00     0.41       0.00     0.20
  6   0.0688      0.00    -0.39       0.00    -0.14
  7   0.1559      0.00    -0.80       0.00    -0.17
  8   0.1561      0.00    -0.46       0.00     0.63
  9   1.0459      0.00    -0.03       0.00     0.23
 10   1.0461      0.00    -0.03       0.00     0.44
 11   2.0372      0.00    -0.07       0.00     0.49
 12   2.0374      0.00     0.06       0.00     0.42
 13   2.8946      0.00    -0.14       0.00     0.10
 14   2.8948      0.00     0.68       0.00    -1.00
 15   3.7373      0.00    -0.25       0.00    -0.62
 16   3.7373      0.00    -0.19       0.00    -0.50
 17   3.7373      0.00    -0.13       0.00    -0.57
 18   3.7373      0.00    -0.22       0.00    -0.55
 19  12.2820      0.00     0.18       0.00     0.48
 20  12.2821      0.00     0.14       0.00     0.60
 21  12.2823      0.00     0.02       0.00     0.37

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.

119976    quality flag:3

Type:       CENTAURR  CENTAURR  CENTAURR

axisobj        24.187    24.187    24.187
ecceobj         0.390     0.390     0.390
incobj          3.517     3.517     3.517
qmin           14.372    13.334    13.812
qmax           34.138    34.054    34.059
amean          24.028    23.439    23.869
amin           23.577    22.484    22.862
amax           24.515    24.515    24.515
emean           0.388     0.389     0.386
emin            0.377     0.373     0.377
emax            0.405     0.414     0.397
imean           3.662     3.434     3.796
imin            3.441     2.182     3.441
imax            3.903     4.105     4.387
excite_mean     0.393     0.393     0.392
fracstop        0.002     0.006     0.002
cjmean          2.898     2.908     2.902

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       247.7     268.4     245.5
kozaiamp         29.7     173.5      25.8