Orbit Fit and Astrometric record for 308933

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: 308933    
# Created Fri Dec 15 02:36:40 2017
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting   99 observations of   99
# Arc:   9.86y
# First observation: 2005/09/13
#  Last observation: 2015/07/25
# Chi-squared of fit:    87.59 DOF:  192 RMS:  0.17
# Min/Max residuals:    -0.67    0.56
# Exact a, adot, b, bdot, g, gdot:
  2.764449E-05  7.558253E-02 -3.826854E-06 -1.215459E-02  4.274706E-02 -4.478540E-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
   17.626639  -44.082368   -0.573342    0.251854   -0.792405  2453626.653353
# Heliocentric elements and errors
Epoch:              2453626.5000  =  2005/09/13
Mean Anomaly:          359.98557 +/-     0.000
Argument of Peri:      122.34211 +/-     0.000
Long of Asc Node:      197.31763 +/-     0.000
Inclination:            19.47642 +/-     0.000
Eccentricity:         0.96935976 +/-    0.0000
Semi-Major Axis:    788.71039946 +/-    0.0000
Time of Perihelion: 2453950.7206 +/-       0.0
Perihelion:          24.16627523 +/-    0.0000
Aphelion:          1553.25452368 +/-    0.0000
Period (y)            22150.5520 +/-      0.00
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           17.00795611 +/-    0.0000
Ecliptic Y          -15.67815644 +/-    0.0000
Ecliptic Z            7.08378541 +/-    0.0000
Ecliptic XDOT         0.00334261 +/-    0.0000
Ecliptic YDOT         0.00349693 +/-    0.0000
Ecliptic ZDOT        -0.00082876 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   24.19206915 +/-    0.0000
Geocenter to KBO     23.39350180 +/-    0.0000
# Hcoef:  7.98

The following table shows the complete astrometric record for 308933. 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 (308933) followed by the observatory code and reference code for the source of the astrometry.

2005 09  13.15261  20 52 50.55   +00 48 25.9   21.8V 308933    705  ct5561      
2005 09  13.15344  20 52 50.54   +00 48 26.0   22.3  308933    705  ct9511      
2005 09  22.14545  20 52 14.80   +00 40 09.1   22.0V 308933    705  ct5561      
2005 09  22.14877  20 52 14.79   +00 40 09.2   23.0  308933    705  ct9511      
2005 10  02.20335  20 51 46.99   +00 30 54.8   22.1V 308933    705  ct5561      
2005 10  02.20667  20 51 46.97   +00 30 54.8   23.1  308933    705  ct9511      
2005 10  11.16528  20 51 34.40   +00 22 58.2   22.5V 308933    705  ct5561      
2005 10  11.16611  20 51 34.43   +00 22 58.1   24.0  308933    705  ct9511      
2005 10  26.09982  20 51 41.09   +00 10 56.3   22.2V 308933    705  ct5561      
2005 10  26.10314  20 51 41.09   +00 10 56.1   23.2  308933    705  ct9511      
2005 10  31.08417  20 51 51.28   +00 07 22.8   22.2V 308933    705  ct5561      
2005 10  31.08749  20 51 51.29   +00 07 22.8   23.2  308933    705  ct9511      
2005 11  02.17374  20 51 56.74   +00 05 58.3   22.0V 308933    705  ct5561      
2005 11  02.17706  20 51 56.74   +00 05 58.2   23.0  308933    705  ct9511      
2005 11  24.09391  20 53 35.80   -00 05 21.7   22.1V 308933    705  ct5561      
2005 11  24.09723  20 53 35.83   -00 05 21.7   23.1  308933    705  ct9511      
2005 11  25.11746  20 53 42.20   -00 05 43.3   22.1V 308933    705  ct5561      
2005 11  25.12078  20 53 42.20   -00 05 43.2   22.9  308933    705  ct9511      
2005 11  30.08030  20 54 15.44   -00 07 13.9   22.1V 308933    705  ct5561      
2005 11  30.08362  20 54 15.45   -00 07 14.0   23.2  308933    705  ct9511      
2006 09  27.12624  21 09 20.29   +01 09 36.0   22.1V 308933    705  ct5561      
2006 09  27.12956  21 09 20.28   +01 09 35.8   23.1  308933    705  ct9511      
2006 09  29.13891  21 09 13.81   +01 07 42.7   22.1V 308933    705  ct5561      
2006 09  29.14223  21 09 13.81   +01 07 42.6   23.2  308933    705  ct9511      
2006 10  01.13595  21 09 07.93   +01 05 51.0   21.8V 308933    705  ct5561      
2006 10  01.13927  21 09 07.89   +01 05 50.6   22.6  308933    705  ct9511      
2006 10  03.20038  21 09 02.39   +01 03 55.9   21.6V 308933    705  ct5561      
2006 10  03.20121  21 09 02.39   +01 03 56.1   21.9  308933    705  ct9511      
2006 10  12.13605  21 08 45.42   +00 55 51.2   21.9V 308933    705  ct5561      
2006 10  12.13937  21 08 45.41   +00 55 51.1   22.7  308933    705  ct9511      
2006 10  21.12947  21 08 40.33   +00 48 12.7   22.1V 308933    705  ct5561      
2006 10  21.13280  21 08 40.33   +00 48 12.5   23.2  308933    705  ct9511      
2006 10  23.11641  21 08 40.91   +00 46 36.7   22.1V 308933    705  ct5561      
2006 10  23.11973  21 08 40.91   +00 46 36.5   23.3  308933    705  ct9511      
2006 10  28.12122  21 08 45.18   +00 42 44.9   22.1V 308933    705  ct5561      
2006 10  28.12454  21 08 45.19   +00 42 44.3   23.1  308933    705  ct9511      
2006 11  14.11663  21 09 29.67   +00 31 46.7   22.4V 308933    705  ct5561      
2006 11  14.11746  21 09 29.66   +00 31 46.8   23.7  308933    705  ct9511      
2006 11  22.12406  21 10 06.51   +00 27 57.7   22.2V 308933    705  ct5561      
2006 11  22.12738  21 10 06.51   +00 27 57.7   23.2  308933    705  ct9511      
2007 10  30.12758  21 25 51.55   +01 14 24.6   22.0V 308933    705  Cz2954      
2007 10  30.13090  21 25 51.55   +01 14 24.4   23.1  308933    705  Cz2954      
2007 11  02.12145  21 25 54.77   +01 12 12.6   22.0V 308933    705  Cz2954      
2007 11  02.12477  21 25 54.77   +01 12 12.5   23.1  308933    705  Cz2954      
2007 11  05.12634  21 25 59.44   +01 10 06.4   22.1V 308933    705  Cz2954      
2007 11  05.12966  21 25 59.44   +01 10 06.2   23.0  308933    705  Cz2954      
2007 11  08.12450  21 26 05.55   +01 08 07.2   22.2V 308933    705  Cz2954      
2007 11  08.12782  21 26 05.55   +01 08 07.0   23.0  308933    705  Cz2954      
2007 11  17.12642  21 26 32.52   +01 02 53.0   22.2V 308933    705  Cz2954      
2007 11  17.12725  21 26 32.55   +01 02 52.6   23.7  308933    705  Cz2954      
2007 11  18.12675  21 26 36.35   +01 02 21.8   22.1V 308933    705  Cz2954      
2007 11  18.12758  21 26 36.34   +01 02 21.8   23.5  308933    705  Cz2954      
2007 11  20.11520  21 26 44.35   +01 01 23.4   22.4V 308933    705  Cz2954      
2007 11  20.11603  21 26 44.36   +01 01 23.4   23.8  308933    705  Cz2954      
2008 07  31.38061  21 49 50.05   +03 02 06.8   21.3R 308933    688  Cz3577      
2008 07  31.42604  21 49 49.76   +03 02 05.7         308933    688  Cz3577      
2008 08  24.87766  21 47 11.27   +02 46 01.9         308933    246  Cz6760      
2008 08  29.17615  21 46 43.56   +02 42 29.8   21.2R 308933    688  Cz4539      
2008 08  29.21110  21 46 43.34   +02 42 28.1         308933    688  Cz4539      
2008 09  02.86329  21 46 13.98   +02 38 26.5         308933    246  Cz6760      
2008 10  02.118948 21 43 44.35   +02 10 54.3   21.6V 308933    645  C~1Q1s      
2008 10  02.119777 21 43 44.34   +02 10 54.2   21.0V 308933    645  C~1Q1s      
2008 10  02.122265 21 43 44.34   +02 10 54.1   22.6V 308933    645  C~1Q1s      
2010 07  10.32259  22 25 44.24   +04 09 19.3         308933    695  C~0Oox      
2010 07  10.33735  22 25 44.15   +04 09 19.2         308933    695  C~0Oox      
2010 07  10.35401  22 25 44.10   +04 09 19.2         308933    695  C~0Oox      
2010 08  18.37437  22 22 21.210  +03 53 29.62  21.5i 308933    F51  C~1vxF      
2010 08  18.38609  22 22 21.141  +03 53 29.02  21.1i 308933    F51  C~1vxF      
2010 08  18.39925  22 22 21.058  +03 53 28.41  21.5r 308933    F51  C~1vxF      
2010 08  18.41119  22 22 20.973  +03 53 27.92  21.3r 308933    F51  C~1vxF      
2010 09  17.15748  22 19 14.16   +03 28 27.0   21.1R 308933    688  C~0NHL      
2010 09  17.20378  22 19 13.90   +03 28 24.6         308933    688  C~0NHL      
2013 09  03.42593  23 09 28.430  +05 01 04.69  21.6w 308933    F51  C~1vxF      
2013 09  03.44085  23 09 28.337  +05 01 04.04  21.8w 308933    F51  C~1vxF      
2013 09  03.45575  23 09 28.245  +05 01 03.29  21.7w 308933    F51  C~1vxF      
2013 09  03.47063  23 09 28.149  +05 01 02.59  21.8w 308933    F51  C~1vxF      
2014 06  03.58574  23 27 53.426  +05 37 18.91  21.9w 308933    F51  C~1vxF      
2014 06  03.58994  23 27 53.432  +05 37 18.96  21.9w 308933    F51  C~1vxF      
2014 06  03.59416  23 27 53.455  +05 37 19.28  22.0w 308933    F51  C~1vxF      
2014 06  03.59835  23 27 53.464  +05 37 19.37  22.0w 308933    F51  C~1vxF      
2014 08  06.53108  23 27 16.301  +05 41 02.26  21.9w 308933    F51  C~1vxF      
2014 08  06.54269  23 27 16.263  +05 41 02.17  22.0w 308933    F51  C~1vxF      
2014 08  06.55433  23 27 16.197  +05 41 01.45  22.0w 308933    F51  C~1vxF      
2014 08  06.56611  23 27 16.142  +05 41 01.38  21.9w 308933    F51  C~1vxF      
2014 08  19.46067  23 26 13.216  +05 34 13.25  21.3i 308933    F51  C~1vxF      
2014 08  19.47188  23 26 13.161  +05 34 12.72  21.4i 308933    F51  C~1vxF      
2014 08  19.48311  23 26 13.103  +05 34 12.15  21.4i 308933    F51  C~1vxF      
2014 08  19.49433  23 26 13.031  +05 34 12.01  21.4i 308933    F51  C~1vxF      
2014 10  27.26050  23 19 55.291  +04 36 31.42  22.0w 308933    F51  C~1vxF      
2014 10  27.27192  23 19 55.248  +04 36 30.95  21.9w 308933    F51  C~1vxF      
2014 10  27.29477  23 19 55.156  +04 36 30.01  21.8w 308933    F51  C~1vxF      
2014 12  12.21039  23 19 25.106  +04 09 57.64  21.9w 308933    F51  C~1vxF      
2014 12  12.22129  23 19 25.134  +04 09 57.57  22.1w 308933    F51  C~1vxF      
2014 12  12.23219  23 19 25.160  +04 09 57.29  22.1w 308933    F51  C~1vxF      
2014 12  12.24305  23 19 25.184  +04 09 57.27  22.1w 308933    F51  C~1vxF      
2015 07  25.51390  23 42 32.043  +06 04 35.83  21.9w 308933    F51  C~1vxF      
2015 07  25.52642  23 42 32.002  +06 04 35.64  21.9w 308933    F51  C~1vxF      
2015 07  25.53901  23 42 31.967  +06 04 35.52  22.1w 308933    F51  C~1vxF      
2015 07  25.55146  23 42 31.936  +06 04 35.26  21.9w 308933    F51  C~1vxF      

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    -0.12       0.00    -0.58
  2   0.0000      0.00     0.06       0.00     0.07
  3   0.0246      0.00     0.05       0.00     0.17
  4   0.0246      0.00     0.08       0.00     0.45
  5   0.0522      0.00     0.08       0.00    -0.10
  6   0.0522      0.00    -0.11       0.00     0.08
  7   0.0767      0.00    -0.16       0.00    -0.04
  8   0.0767      0.00     0.30       0.00    -0.10
  9   0.1176      0.00    -0.03       0.00     0.11
 10   0.1176      0.00    -0.10       0.00     0.06
 11   0.1312      0.00     0.09       0.00     0.02
 12   0.1312      0.00     0.12       0.00     0.16
 13   0.1370      0.00     0.10       0.00     0.06
 14   0.1370      0.00    -0.03       0.00     0.09
 15   0.1970      0.00    -0.12       0.00    -0.09
 16   0.1970      0.00     0.03       0.00    -0.02
 17   0.1998      0.00    -0.27       0.00    -0.09
 18   0.1998      0.00    -0.58       0.00     0.08
 19   0.2134      0.00     0.01       0.00     0.05
 20   0.2134      0.00    -0.18       0.00    -0.00
 21   1.0376      0.00     0.06       0.00     0.20
 22   1.0376      0.00     0.09       0.00     0.19
 23   1.0431      0.00    -0.08       0.00     0.09
 24   1.0431      0.00     0.08       0.00     0.17
 25   1.0486      0.00     0.06       0.00     0.17
 26   1.0486      0.00    -0.39       0.00    -0.05
 27   1.0542      0.00    -0.08       0.00    -0.10
 28   1.0542      0.00    -0.04       0.00     0.14
 29   1.0787      0.00     0.03       0.00     0.00
 30   1.0787      0.00    -0.05       0.00     0.08
 31   1.1033      0.00    -0.04       0.00     0.05
 32   1.1033      0.00    -0.04       0.00     0.01
 33   1.1087      0.00    -0.06       0.00     0.07
 34   1.1087      0.00    -0.08       0.00     0.03
 35   1.1224      0.00     0.12       0.00     0.03
 36   1.1224      0.00     0.22       0.00    -0.42
 37   1.1690      0.00     0.22       0.00    -0.07
 38   1.1690      0.00     0.02       0.00     0.06
 39   1.1909      0.00     0.22       0.00     0.03
 40   1.1909      0.00    -0.04       0.00     0.11
 41   2.1272      0.00     0.05       0.00     0.21
 42   2.1273      0.00     0.01       0.00     0.16
 43   2.1354      0.00     0.04       0.00     0.10
 44   2.1354      0.00    -0.02       0.00     0.14
 45   2.1437      0.00     0.05       0.00     0.04
 46   2.1437      0.00    -0.03       0.00    -0.02
 47   2.1519      0.00     0.13       0.00     0.09
 48   2.1519      0.00     0.02       0.00     0.02
 49   2.1765      0.00    -0.30       0.00     0.56
 50   2.1765      0.00     0.10       0.00     0.18
 51   2.1793      0.00     0.20       0.00     0.06
 52   2.1793      0.00     0.01       0.00     0.08
 53   2.1847      0.00     0.01       0.00     0.03
 54   2.1847      0.00     0.11       0.00     0.05
 55   2.8808      0.00     0.20       0.00    -0.12
 56   2.8810      0.00     0.14       0.00     0.11
 57   2.9479      0.00    -0.59       0.00    -0.34
 58   2.9597      0.00    -0.09       0.00     0.05
 59   2.9598      0.00     0.02       0.00     0.11
 60   2.9725      0.00    -0.67       0.00    -0.37
 61   3.0526      0.00     0.16       0.00    -0.25
 62   3.0526      0.00     0.06       0.00    -0.31
 63   3.0526      0.00     0.20       0.00    -0.26
 64   4.8218      0.00     0.52       0.00    -0.13
 65   4.8219      0.00    -0.04       0.00    -0.16
 66   4.8219      0.00     0.10       0.00    -0.08
 67   4.9287      0.00     0.04       0.00     0.22
 68   4.9288      0.00     0.14       0.00     0.11
 69   4.9288      0.00     0.18       0.00     0.04
 70   4.9288      0.00     0.06       0.00     0.05
 71   5.0103      0.00    -0.09       0.00    -0.19
 72   5.0104      0.00     0.12       0.00     0.03
 73   7.9734      0.00    -0.01       0.00     0.05
 74   7.9734      0.00     0.01       0.00     0.12
 75   7.9735      0.00     0.04       0.00     0.09
 76   7.9735      0.00     0.01       0.00     0.11
 77   8.7212      0.00     0.05       0.00    -0.02
 78   8.7213      0.00    -0.08       0.00    -0.11
 79   8.7213      0.00     0.04       0.00     0.08
 80   8.7213      0.00    -0.05       0.00     0.03
 81   8.8963      0.00     0.22       0.00     0.09
 82   8.8963      0.00     0.43       0.00     0.31
 83   8.8964      0.00     0.22       0.00    -0.11
 84   8.8964      0.00     0.19       0.00     0.13
 85   8.9317      0.00    -0.01       0.00     0.15
 86   8.9317      0.00     0.09       0.00     0.03
 87   8.9318      0.00     0.14       0.00    -0.13
 88   8.9318      0.00    -0.01       0.00     0.14
 89   9.1201      0.00    -0.06       0.00    -0.03
 90   9.1201      0.00    -0.06       0.00     0.07
 91   9.1202      0.00    -0.16       0.00     0.26
 92   9.2459      0.00    -0.05       0.00    -0.03
 93   9.2459      0.00    -0.03       0.00     0.07
 94   9.2459      0.00    -0.04       0.00    -0.04
 95   9.2460      0.00    -0.08       0.00     0.11
 96   9.8627      0.00     0.05       0.00    -0.09
 97   9.8628      0.00    -0.04       0.00    -0.10
 98   9.8628      0.00    -0.04       0.00    -0.05
 99   9.8628      0.00     0.01       0.00    -0.13

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.

308933    quality flag:2

Type:       CENTAURR  CENTAURS  CENTAURS

axisobj       860.970   860.840   861.101
ecceobj         0.972     0.972     0.972
incobj         19.459    19.459    19.459
qmin           19.494    15.319    15.077
qmax         1779.119  4072.684  5637.411
amean         608.555  1037.944  1122.565
amin          480.648   704.540   727.609
amax          901.637  2048.541  2830.949
emean           0.959     0.976     0.977
emin            0.944     0.962     0.961
emax            0.975     0.989     0.991
imean          19.868    19.844    19.852
imin           18.596    17.950    18.021
imax           20.915    22.728    23.035
excite_mean     1.018     1.033     1.035
fracstop        0.325     1.000     1.000
cjmean          2.410     2.407     2.410

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       124.2     126.5     126.3
kozaiamp          5.9      10.4      11.3