Orbit Fit and Astrometric record for 471272

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: 471272    
# Created Thu Oct 19 01:36:52 2017
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting   40 observations of   41
# Arc:   3.98y
# First observation: 2011/03/23
#  Last observation: 2015/03/16
# Chi-squared of fit:   122.00 DOF:   74 RMS:  0.31
# Min/Max residuals:    -1.07    0.93
# Exact a, adot, b, bdot, g, gdot:
  2.381636E-05  1.204916E-01  1.797182E-05  7.344391E-02  6.804521E-02  1.988140E-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
  -23.955823 -177.959489    0.003143   -0.406244   -0.914365  2455643.526276
# Heliocentric elements and errors
Epoch:              2455644.5000  =  2011/03/24
Mean Anomaly:            2.13913 +/-     0.000
Argument of Peri:      300.64908 +/-     0.000
Long of Asc Node:      214.27810 +/-     0.000
Inclination:            37.78094 +/-     0.000
Eccentricity:         0.73909244 +/-    0.0000
Semi-Major Axis:     58.18733650 +/-    0.0000
Time of Perihelion: 2454681.1670 +/-       0.0
Perihelion:          15.18151593 +/-    0.0000
Aphelion:           101.19315707 +/-    0.0000
Period (y)              443.8650 +/-      0.00
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -14.41769765 +/-    0.0000
Ecliptic Y           -0.51125247 +/-    0.0000
Ecliptic Z           -5.96687932 +/-    0.0000
Ecliptic XDOT        -0.00175858 +/-    0.0000
Ecliptic YDOT        -0.00490775 +/-    0.0000
Ecliptic ZDOT         0.00237574 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   15.61194193 +/-    0.0000
Geocenter to KBO     14.69607341 +/-    0.0000
# Hcoef:  8.96

The following table shows the complete astrometric record for 471272. 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 (471272) followed by the observatory code and reference code for the source of the astrometry.

2011 03  23.02551  11 27 11.250  -22 40 22.62  21.1R 471272    809  C~0U6m      
2011 03  23.11008  11 27 10.382  -22 40 12.90  20.7R 471272    809  C~0U6m      
2011 03  27.01683  11 26 31.311  -22 32 47.29  21.1R 471272    809  C~0U6m      
2011 03  27.10079  11 26 30.480  -22 32 37.64  21.1R 471272    809  C~0U6n      
2011 03  27.19166  11 26 29.542  -22 32 26.95  21.0R 471272    809  C~0U6n      
2011 03  28.03368  11 26 21.295  -22 30 48.31  21.1R 471272    809  C~0U6n      
2011 03  28.15255  11 26 20.123  -22 30 34.34  21.0R 471272    809  C~0U6n      
2011 03  28.26847  11 26 18.962  -22 30 20.44  21.0R 471272    809  C~0U6n      
2011 03  31.23056  11 25 50.350  -22 24 24.17        471272    807  C~0UWM      
2011 03  31.28221  11 25 49.846  -22 24 17.74        471272    807  C~0UWM      
2011 04  02.01748  11 25 33.633  -22 20 43.22  20.7R 471272    809  C~0UWM      
2011 04  02.10108  11 25 32.842  -22 20 32.96  20.8R 471272    809  C~0UWM      
2011 04  02.18433  11 25 32.088  -22 20 22.99  20.8R 471272    809  C~0UWM      
2011 06  26.04435  11 24 02.941  -19 29 43.08  20.0R 471272    807  C~0fFS      
2012 03  25.17185  12 00 31.13   -21 34 02.0         471272    807  C~0g7h      
2012 03  25.24124  12 00 30.41   -21 33 54.6         471272    807  C~0g7h      
2012 04  13.34980  11 57 27.307  -20 57 01.10  20.7w 471272    F51  C@0612      
2012 04  13.36304  11 57 27.187  -20 56 59.40  20.7w 471272    F51  C@0612      
2012 04  13.37627  11 57 27.070  -20 56 57.79  20.7w 471272    F51  C@0612      
2012 04  13.38951  11 57 26.950  -20 56 56.15  20.7w 471272    F51  C~0g7h      
2014 04  09.41014  12 58 36.035  -18 17 43.36  20.6i 471272    F51  C~1vWM      
2014 04  09.42139  12 58 35.926  -18 17 42.36  20.6i 471272    F51  C~1vWM      
2014 04  09.43262  12 58 35.804  -18 17 41.07  20.6i 471272    F51  C~1vWM      
2014 04  09.44384  12 58 35.692  -18 17 40.05  20.8i 471272    F51  C~1vWM      
2014 05  19.28569  12 53 09.768  -17 07 09.61  21.2w 471272    F51  C~1vWM      
2014 05  19.29693  12 53 09.705  -17 07 08.52  21.1w 471272    F51  C~1vWM      
2014 05  19.29758  12 53 09.701  -17 07 08.30  21.2w 471272    F51  C~1vWM      
2014 05  19.30815  12 53 09.635  -17 07 07.27  21.1w 471272    F51  C~1vWM      
2014 05  19.30881  12 53 09.633  -17 07 07.37  21.2w 471272    F51  C~1vWM      
2014 05  19.31936  12 53 09.564  -17 07 06.09  21.1w 471272    F51  C~1vWM      
2014 05  19.32002  12 53 09.565  -17 07 06.01  21.1w 471272    F51  C~1vWM      
2014 12  30.64432  13 29 40.802  -17 35 45.55  21.6w 471272    F51  C~1vWM      
2014 12  30.64760  13 29 40.826  -17 35 45.38  21.8w 471272    F51  C~1vWN      
2014 12  30.65089  13 29 40.843  -17 35 45.60  21.6w 471272    F51  C~1vWN      
2014 12  30.65418  13 29 40.873  -17 35 45.68  21.5w 471272    F51  C~1vWN      
2015 01  31.61877  13 31 44.024  -17 42 06.28  21.3w 471272    F51  C~1vWN      
2015 01  31.62977  13 31 44.022  -17 42 06.13  21.4w 471272    F51  C~1vWN      
2015 01  31.64077  13 31 44.029  -17 42 06.07  21.4w 471272    F51  C~1vWN      
2015 01  31.65179  13 31 44.022  -17 42 05.95  21.4w 471272    F51  C~1vWN      
2015 03  16.41090  13 28 39.37   -17 12 30.4   20.7R 471272    G37  C~1N7J      
2015 03  16.46487  13 28 38.95   -17 12 26.0         471272    G37  C~1N7J      

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 (  -0.34)      0.00 (   2.93)
  2   0.0002      0.00     0.93       0.00    -0.21
  3   0.0109      0.00     0.57       0.00     0.46
  4   0.0112      0.00     0.75       0.00     0.36
  5   0.0114      0.00     0.43       0.00     0.44
  6   0.0137      0.00     0.19       0.00     0.02
  7   0.0140      0.00     0.42       0.00    -0.01
  8   0.0144      0.00     0.37       0.00     0.12
  9   0.0225      0.00    -1.01       0.00    -0.39
 10   0.0226      0.00    -1.07       0.00    -0.32
 11   0.0274      0.00    -0.47       0.00    -0.03
 12   0.0276      0.00    -0.42       0.00    -0.13
 13   0.0278      0.00     0.17       0.00    -0.53
 14   0.2601      0.00    -0.22       0.00    -0.14
 15   1.0079      0.00     0.15       0.00    -0.22
 16   1.0081      0.00     0.14       0.00    -0.09
 17   1.0604      0.00     0.07       0.00    -0.16
 18   1.0605      0.00     0.05       0.00    -0.11
 19   1.0605      0.00     0.08       0.00    -0.15
 20   1.0605      0.00     0.06       0.00    -0.16
 21   3.0483      0.00     0.26       0.00    -0.15
 22   3.0483      0.00     0.30       0.00    -0.28
 23   3.0483      0.00     0.14       0.00    -0.12
 24   3.0484      0.00     0.14       0.00    -0.23
 25   3.1575      0.00     0.07       0.00    -0.07
 26   3.1575      0.00     0.11       0.00    -0.13
 27   3.1575      0.00     0.11       0.00     0.02
 28   3.1575      0.00     0.04       0.00    -0.04
 29   3.1575      0.00     0.07       0.00    -0.21
 30   3.1575      0.00    -0.04       0.00    -0.02
 31   3.1575      0.00     0.03       0.00    -0.00
 32   3.7745      0.00    -0.06       0.00    -0.07
 33   3.7745      0.00    -0.05       0.00     0.21
 34   3.7745      0.00    -0.15       0.00     0.09
 35   3.7745      0.00    -0.06       0.00     0.11
 36   3.8620      0.00    -0.20       0.00    -0.08
 37   3.8620      0.00    -0.23       0.00    -0.03
 38   3.8621      0.00    -0.13       0.00    -0.08
 39   3.8621      0.00    -0.24       0.00    -0.06
 40   3.9819      0.00     0.23       0.00    -0.17
 41   3.9820      0.00     0.45       0.00     0.44

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.

471272    quality flag:3

Type:       CENTAURR  CENTAURR  CENTAURR

axisobj        58.908    58.906    58.909
ecceobj         0.742     0.742     0.742
incobj         37.715    37.715    37.715
qmin           14.818    12.863    14.811
qmax          108.012   105.707   105.052
amean          59.342    52.225    58.987
amin           58.225    44.582    58.225
amax           61.586    60.457    60.119
emean           0.744     0.736     0.743
emin            0.736     0.680     0.736
emax            0.754     0.775     0.750
imean          38.074    35.521    38.058
imin           37.791    33.688    37.761
imax           38.350    38.843    38.350
excite_mean     0.967     0.938     0.965
fracstop        0.006     0.168     0.006
cjmean          1.996     2.024     1.998

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       302.1     189.4     302.0
kozaiamp          1.8     179.9       1.7