Orbit Fit and Astrometric record for 499522

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: 499522    
# Created Fri Dec 15 02:36:51 2017
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting   53 observations of   53
# Arc:   6.00y
# First observation: 2010/08/14
#  Last observation: 2016/08/14
# Chi-squared of fit:   241.33 DOF:  100 RMS:  0.38
# Min/Max residuals:    -1.90    0.85
# Exact a, adot, b, bdot, g, gdot:
  1.454751E-05  4.351477E-02  8.579840E-06  1.552466E-02  4.236186E-02 -1.702211E-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
  -15.033177  -25.670825    0.231292   -0.254717   -0.948338  2455422.684726
# Heliocentric elements and errors
Epoch:              2455422.5000  =  2010/08/14
Mean Anomaly:          265.53704 +/-     0.000
Argument of Peri:       95.86370 +/-     0.000
Long of Asc Node:        8.58872 +/-     0.000
Inclination:            24.26887 +/-     0.000
Eccentricity:         0.38003519 +/-    0.0000
Semi-Major Axis:     21.23893871 +/-    0.0000
Time of Perihelion: 2464803.6636 +/-       0.0
Perihelion:          13.16739458 +/-    0.0000
Aphelion:            29.31048284 +/-    0.0000
Period (y)               97.8830 +/-      0.00
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           21.33720887 +/-    0.0000
Ecliptic Y          -10.51135102 +/-    0.0000
Ecliptic Z           -6.12271981 +/-    0.0000
Ecliptic XDOT         0.00049609 +/-    0.0000
Ecliptic YDOT         0.00288858 +/-    0.0000
Ecliptic ZDOT         0.00125435 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   24.56135431 +/-    0.0000
Geocenter to KBO     23.60632776 +/-    0.0000
# Hcoef:  7.96

The following table shows the complete astrometric record for 499522. 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 (499522) followed by the observatory code and reference code for the source of the astrometry.

2010 08  14.18396  22 48 30.754  -23 51 11.52        499522    809  C~0M7s      
2010 08  14.27171  22 48 30.007  -23 51 15.73        499522    809  C~0M7s      
2010 08  14.35228  22 48 29.377  -23 51 19.29        499522    809  C~0M7s      
2010 08  15.18573  22 48 22.617  -23 51 58.06  21.9R 499522    809  C~0M7s      
2010 08  15.26801  22 48 21.958  -23 52 01.77  21.8R 499522    809  C~0M7s      
2010 08  15.34904  22 48 21.254  -23 52 05.88        499522    809  C~0M7s      
2010 08  17.25080  22 48 05.62   -23 53 32.1         499522    807  C~0Mw2      
2010 09  06.02309  22 45 16.480  -24 06 43.23  22.2R 499522    809  C~0ev6      
2010 09  06.10686  22 45 15.725  -24 06 45.54  22.2R 499522    809  C~0ev6      
2010 09  06.20016  22 45 14.941  -24 06 48.63  21.9R 499522    809  C~0ev6      
2010 09  06.27246  22 45 14.19   -24 06 50.9         499522    807  C~0Mw2      
2010 09  07.22564  22 45 05.93   -24 07 22.2         499522    807  C~0Mw2      
2010 09  29.22354  22 42 04.80   -24 15 27.4         499522    807  C~0NJ7      
2010 09  29.25653  22 42 04.61   -24 15 28.7         499522    807  C~0NJ7      
2010 10  08.18696  22 41 00.66   -24 16 23.1   21.8R 499522    688  C~0NnL      
2010 10  08.24222  22 41 00.31   -24 16 22.2         499522    688  C~0NnL      
2011 07  28.32268  22 59 08.05   -21 46 37.7         499522    807  C~16cO      
2011 07  28.36598  22 59 07.78   -21 46 39.6         499522    807  C~16cO      
2014 07  29.39211  23 25 08.10   -15 41 11.9   21.1R 499522    G37  C~16cO      
2014 07  29.44009  23 25 07.81   -15 41 14.0         499522    G37  C~16cO      
2014 09  13.42352  23 19 07.595  -16 16 23.27  20.6i 499522    F51  C~1vWF      
2014 09  13.44461  23 19 07.426  -16 16 24.12  20.6i 499522    F51  C~1vWF      
2014 09  13.45518  23 19 07.327  -16 16 24.31  20.7i 499522    F51  C~1vWF      
2014 09  17.38511  23 18 32.555  -16 18 52.84  21.3w 499522    F51  C~1vWF      
2014 09  17.39638  23 18 32.455  -16 18 53.16  21.3w 499522    F51  C~1vWF      
2014 09  17.40763  23 18 32.360  -16 18 53.61  21.2w 499522    F51  C~1vWF      
2014 09  17.41886  23 18 32.254  -16 18 54.13  21.3w 499522    F51  C~1vWF      
2014 09  21.09180  23 18 00.01   -16 21 02.7   21.7V 499522    W84  C~2J9J      
2014 09  21.18136  23 17 59.22   -16 21 05.7         499522    W84  C~2J9J      
2014 09  21.24844  23 17 58.62   -16 21 08.0         499522    W84  C~2J9J      
2014 10  10.41661  23 15 20.796  -16 29 11.85  20.8i 499522    F51  C~1vWF      
2014 10  10.42948  23 15 20.696  -16 29 12.58  20.7i 499522    F51  C~1vWF      
2014 10  10.44235  23 15 20.595  -16 29 12.90  20.8i 499522    F51  C~1vWF      
2014 10  10.45525  23 15 20.513  -16 29 13.32  20.3i 499522    F51  C~1vWF      
2014 11  20.26173  23 11 57.696  -16 24 22.63  21.4w 499522    F51  C~1vWF      
2014 11  20.27396  23 11 57.683  -16 24 22.32  21.2w 499522    F51  C~1vWF      
2014 11  20.28614  23 11 57.654  -16 24 21.90  21.4w 499522    F51  C~1vWF      
2014 11  20.29839  23 11 57.644  -16 24 21.63  21.1w 499522    F51  C~1vWF      
2014 11  22.20623  23 11 54.438  -16 23 20.48  21.5w 499522    F51  C~1vWF      
2014 11  22.21683  23 11 54.421  -16 23 20.27  21.3w 499522    F51  C~1vWF      
2014 11  22.22745  23 11 54.410  -16 23 19.89  21.6w 499522    F51  C~1vWF      
2014 11  22.23808  23 11 54.363  -16 23 19.80  21.6w 499522    F51  C~1vWF      
2014 11  22.25936  23 11 54.338  -16 23 18.72  21.5w 499522    F51  C~1vWF      
2014 11  22.27159  23 11 54.312  -16 23 18.33  21.6w 499522    F51  C~1vWF      
2014 11  22.28383  23 11 54.300  -16 23 18.26  21.7w 499522    F51  C~1vWF      
2014 11  22.29605  23 11 54.278  -16 23 17.85  21.7w 499522    F51  C~1vWF      
2016 08  02.53259  23 43 00.211  -11 06 56.38  21.2w 499522    F51  C~1wBs      
2016 08  02.54363  23 43 00.172  -11 06 56.57  21.7w 499522    F51  C~1wBs      
2016 08  02.55469  23 43 00.077  -11 06 57.25  21.4w 499522    F51  C~1wBs      
2016 08  14.52035  23 41 41.407  -11 15 38.56  21.3r 499522    F51  C~1wZF      
2016 08  14.53187  23 41 41.303  -11 15 39.48  21.3r 499522    F51  C~1wZF      
2016 08  14.54341  23 41 41.239  -11 15 39.75  21.5r 499522    F51  C~1wZF      
2016 08  14.55494  23 41 41.138  -11 15 40.41  21.2r 499522    F51  C~1wZF      

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    -0.31       0.00    -1.90
  2   0.0002      0.00     0.31       0.00    -0.45
  3   0.0005      0.00     0.79       0.00    -0.27
  4   0.0027      0.00     0.42       0.00    -0.24
  5   0.0030      0.00     0.75       0.00    -0.13
  6   0.0032      0.00     0.25       0.00    -0.51
  7   0.0084      0.00    -0.67       0.00     0.62
  8   0.0625      0.00     0.56       0.00    -0.32
  9   0.0628      0.00     0.27       0.00     0.20
 10   0.0630      0.00     0.85       0.00     0.22
 11   0.0632      0.00    -0.86       0.00     0.31
 12   0.0658      0.00    -0.96       0.00     0.15
 13   0.1260      0.00    -0.21       0.00     0.65
 14   0.1261      0.00     0.74       0.00    -0.31
 15   0.1506      0.00    -0.63       0.00    -0.21
 16   0.1507      0.00    -0.20       0.00     0.74
 17   0.9532      0.00    -0.39       0.00     0.03
 18   0.9533      0.00    -0.20       0.00     0.26
 19   3.9568      0.00    -0.06       0.00     0.40
 20   3.9569      0.00    -0.15       0.00     0.46
 21   4.0828      0.00    -0.14       0.00     0.04
 22   4.0828      0.00     0.18       0.00     0.01
 23   4.0829      0.00     0.13       0.00     0.24
 24   4.0936      0.00    -0.03       0.00     0.06
 25   4.0937      0.00    -0.01       0.00     0.15
 26   4.0937      0.00     0.08       0.00     0.11
 27   4.0937      0.00     0.01       0.00    -0.00
 28   4.1038      0.00     0.16       0.00    -0.04
 29   4.1040      0.00     0.24       0.00    -0.01
 30   4.1042      0.00     0.18       0.00    -0.07
 31   4.1567      0.00     0.06       0.00     0.12
 32   4.1567      0.00     0.05       0.00    -0.41
 33   4.1568      0.00     0.02       0.00    -0.53
 34   4.1568      0.00     0.27       0.00    -0.75
 35   4.2685      0.00    -0.15       0.00     0.23
 36   4.2686      0.00     0.02       0.00     0.17
 37   4.2686      0.00    -0.04       0.00     0.21
 38   4.2686      0.00     0.17       0.00     0.10
 39   4.2738      0.00     0.20       0.00     0.17
 40   4.2739      0.00     0.22       0.00     0.03
 41   4.2739      0.00     0.32       0.00     0.06
 42   4.2739      0.00    -0.12       0.00    -0.20
 43   4.2740      0.00     0.04       0.00     0.17
 44   4.2740      0.00    -0.04       0.00     0.15
 45   4.2741      0.00     0.08       0.00    -0.18
 46   4.2741      0.00     0.06       0.00    -0.18
 47   5.9695      0.00    -0.11       0.00    -0.13
 48   5.9695      0.00     0.30       0.00     0.13
 49   5.9695      0.00    -0.13       0.00    -0.09
 50   6.0023      0.00     0.31       0.00     0.23
 51   6.0023      0.00     0.03       0.00    -0.17
 52   6.0024      0.00     0.36       0.00     0.09
 53   6.0024      0.00     0.12       0.00    -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.

499522    quality flag:3

Type:       CENTAURR  CENTAURR  CENTAURR

axisobj        21.188    21.188    21.188
ecceobj         0.382     0.382     0.382
incobj         24.265    24.265    24.265
qmin           13.085    12.656    13.085
qmax           29.872    30.605    29.873
amean          21.349    21.610    21.380
amin           20.918    20.841    21.188
amax           21.668    22.072    21.609
emean           0.358     0.376     0.383
emin            0.333     0.341     0.380
emax            0.387     0.401     0.387
imean          24.698    24.522    24.469
imin           23.903    23.792    24.368
imax           25.655    25.436    24.622
excite_mean     0.550     0.560     0.564
fracstop        0.023     0.021     0.001
cjmean          2.837     2.819     2.816

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     193.1      98.4
kozaiamp         88.9      94.5       2.3