Orbit Fit and Astrometric record for 120216

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: 120216    
# Created Fri Dec 15 02:36:30 2017
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting  117 observations of  117
# Arc:  14.27y
# First observation: 2001/03/12
#  Last observation: 2015/06/19
# Chi-squared of fit:   360.97 DOF:  228 RMS:  0.31
# Min/Max residuals:    -1.49    1.54
# Exact a, adot, b, bdot, g, gdot:
  1.838058E-05  4.023801E-02 -7.670221E-06 -2.076381E-02  3.533925E-02 -8.481649E-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
   11.374954 -174.075338    0.238244    0.190795   -0.949183  2451980.807262
# Heliocentric elements and errors
Epoch:              2451980.5000  =  2001/03/12
Mean Anomaly:          335.16088 +/-     0.000
Argument of Peri:      204.37512 +/-     0.000
Long of Asc Node:       25.68997 +/-     0.000
Inclination:            29.32370 +/-     0.000
Eccentricity:         0.31292667 +/-    0.0000
Semi-Major Axis:     39.29625065 +/-    0.0000
Time of Perihelion: 2458188.6013 +/-       0.0
Perihelion:          26.99940581 +/-    0.0000
Aphelion:            51.59309548 +/-    0.0000
Period (y)              246.3400 +/-      0.00
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -28.57666745 +/-    0.0000
Ecliptic Y           -2.72179462 +/-    0.0000
Ecliptic Z            5.58081768 +/-    0.0000
Ecliptic XDOT         0.00063863 +/-    0.0000
Ecliptic YDOT        -0.00306394 +/-    0.0000
Ecliptic ZDOT        -0.00170645 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   29.24356233 +/-    0.0000
Geocenter to KBO     28.29729112 +/-    0.0000
# Hcoef:  6.62

The following table shows the complete astrometric record for 120216. 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 (120216) followed by the observatory code and reference code for the source of the astrometry.

2001 03  12.306519 12 39 51.19   +08 05 18.4   21.0V 120216    645  C~2KCh      
2001 03  12.307348 12 39 51.18   +08 05 18.5   20.9V 120216    645  C~2KCh      
2001 03  12.309836 12 39 51.19   +08 05 18.7   21.3V 120216    645  C~2KCh      
2002 03  12.53832  12 46 29.54   +06 03 22.3   20.5R 120216    644  Ck6274      
2002 04  01.50341  12 44 18.91   +06 14 01.2         120216    644  Ck6274      
2002 04  02.49786  12 44 12.20   +06 14 30.4   20.3R 120216    644  Ck6274      
2002 04  13.18947  12 43 00.83   +06 19 07.3   21.0R 120216    644  Ck6274      
2002 04  13.21058  12 43 00.69   +06 19 08.1   20.5R 120216    644  Ck6274      
2002 04  13.23411  12 43 00.55   +06 19 08.8   20.4R 120216    644  Ck6274      
2002 04  15.22316  12 42 47.54   +06 19 54.2   21.0R 120216    644  Ck6274      
2002 04  15.30652  12 42 47.10   +06 19 55.8   21.0R 120216    644  Ck6274      
2002 04  15.36959  12 42 46.57   +06 19 56.6   20.7R 120216    644  Ck6274      
2003 03  11.37885  12 53 20.62   +03 58 21.1   21. R 120216    644  Cm3345      
2003 03  11.44891  12 53 20.33   +03 58 23.1         120216    644  Cm3345      
2003 03  11.51166  12 53 19.83   +03 58 25.2         120216    644  Cm3345      
2003 04  07.36583  12 50 23.87   +04 12 19.3   21. R 120216    644  Cl2198      
2004 03  14.44707  12 59 44.89   +01 53 57.6   21.6V 120216    691  Ck6274      
2004 03  14.47413  12 59 44.69   +01 53 58.7   21.7V 120216    691  Ck6274      
2004 03  14.50319  12 59 44.52   +01 53 59.3   21.9V 120216    691  Ck6274      
2004 04  19.18664  12 55 47.47   +02 11 02.3   21.5V 120216    291  Ck6274      
2004 04  19.25901  12 55 46.99   +02 11 04.0   21.3V 120216    291  Ck6274      
2004 04  19.35427  12 55 46.33   +02 11 04.5   20.8V 120216    291  Ck6274      
2004 04  23.27869  12 55 20.97   +02 12 30.1   21.6V 120216    291  Ck6274      
2004 04  23.29209  12 55 20.88   +02 12 30.4   21.5V 120216    291  Ck6274      
2004 04  23.32632  12 55 20.65   +02 12 31.2   21.5V 120216    291  Ck6274      
2004 04  24.22168  12 55 15.00   +02 12 49.2   21.5V 120216    291  Ck6274      
2004 04  24.24944  12 55 14.82   +02 12 49.4   21.3V 120216    291  Ck6274      
2004 04  24.27901  12 55 14.63   +02 12 50.3   21.3V 120216    291  Ck6275      
2005 04  01.00566  13 04 45.15   -00 05 49.1   22. R 120216    621  Cn1707      
2005 04  02.00124  13 04 38.46   -00 05 19.6   22. R 120216    621  Cn1707      
2005 04  11.96651  13 03 30.32   -00 00 39.9         120216    621  Cn1707      
2005 04  11.98598  13 03 30.14   -00 00 38.6   21. R 120216    621  Cn1707      
2005 06  06.17126  12 58 36.80   +00 09 52.0   21.2R 120216    290  Cn6537      
2005 06  06.22000  12 58 36.65   +00 09 51.7   21.5R 120216    290  Cn6537      
2005 06  07.16769  12 58 34.01   +00 09 43.3   21.3R 120216    290  Cn6537      
2005 06  07.22041  12 58 33.86   +00 09 42.8   21.5R 120216    290  Cn6537      
2006 04  19.22493  13 09 41.90   -02 08 10.7   20.8V 120216    G96  Cq9759      
2006 04  19.23609  13 09 41.79   -02 08 09.7   20.7V 120216    G96  Cq9759      
2006 04  19.24729  13 09 41.68   -02 08 09.9   20.8V 120216    G96  Cq9759      
2006 04  19.25861  13 09 41.65   -02 08 09.6   21.0V 120216    G96  Cq9759      
2009 03  31.34938  13 33 34.99   -08 57 08.2   20.6V 120216    G96  C~0658      
2009 03  31.36118  13 33 34.92   -08 57 07.6   20.6V 120216    G96  C~0658      
2009 03  31.37300  13 33 34.84   -08 57 07.0   20.8V 120216    G96  C~0658      
2009 03  31.38481  13 33 34.74   -08 57 07.0   21.0V 120216    G96  C~0658      
2009 04  22.00463  13 31 02.49   -08 47 42.1   20.5R 120216    950  C~093P      
2009 05  25.99506  13 27 30.44   -08 35 49.4   21.1R 120216    950  C~093P      
2009 05  26.03132  13 27 30.25   -08 35 48.7   20.5R 120216    950  C~093P      
2010 01  24.83641  13 45 18.09   -11 18 38.3         120216    250  S~0MLD      
2010 01  24.83880  13 45 18.09   -11 18 38.3         120216    250  S~0MLD      
2010 01  24.84161  13 45 18.10   -11 18 38.4         120216    250  S~0MLD      
2010 01  24.84399  13 45 18.10   -11 18 38.4         120216    250  S~0MLD      
2010 01  24.84907  13 45 18.09   -11 18 38.6         120216    250  S~0MLD      
2010 01  24.85463  13 45 18.09   -11 18 38.7         120216    250  S~0MLD      
2010 01  24.89213  13 45 18.10   -11 18 39.4         120216    250  S~0MLD      
2010 01  24.89769  13 45 18.11   -11 18 39.6         120216    250  S~0MLD      
2011 01  10.52681  13 52 25.45   -13 22 55.1   20.7R 120216    695  C~0ULv      
2011 01  10.56447  13 52 25.53   -13 22 57.0         120216    695  C~0ULv      
2012 03  20.48146  13 57 58.589  -15 47 13.91  20.9r 120216    F51  C~1voq      
2012 03  20.49185  13 57 58.531  -15 47 13.97  20.7r 120216    F51  C~1voq      
2012 03  20.50287  13 57 58.442  -15 47 13.89  21.1g 120216    F51  C~1voq      
2012 03  20.51388  13 57 58.390  -15 47 13.64  21.1g 120216    F51  C~1voq      
2013 04  09.45422  14 03 57.450  -17 57 51.01  20.6w 120216    F51  C~1voq      
2013 04  09.46888  14 03 57.347  -17 57 50.73  20.6w 120216    F51  C~1voq      
2013 04  09.48358  14 03 57.233  -17 57 50.46  20.6w 120216    F51  C~1voq      
2013 04  09.49821  14 03 57.128  -17 57 50.16  20.7w 120216    F51  C~1voq      
2014 01  09.64253  14 16 00.999  -19 50 44.27  21.0w 120216    F51  C~1voq      
2014 01  09.64664  14 16 01.008  -19 50 44.38  20.9w 120216    F51  C~1voq      
2014 01  09.65073  14 16 01.021  -19 50 44.61  20.9w 120216    F51  C~1voq      
2014 01  09.65483  14 16 01.043  -19 50 44.76  21.0w 120216    F51  C~1voq      
2014 04  05.47521  14 12 55.411  -20 14 37.35  20.9w 120216    F51  C~1voq      
2014 04  05.48710  14 12 55.316  -20 14 37.24  20.9w 120216    F51  C~1voq      
2014 04  05.49899  14 12 55.231  -20 14 37.09  20.8w 120216    F51  C~1voq      
2014 04  05.51090  14 12 55.146  -20 14 36.80  20.9w 120216    F51  C~1voq      
2014 04  29.40160  14 09 56.749  -20 06 58.22  20.7w 120216    F51  C~1voq      
2014 04  29.41219  14 09 56.667  -20 06 58.00  20.6w 120216    F51  C~1voq      
2014 04  29.42277  14 09 56.584  -20 06 57.73  20.6w 120216    F51  C~1voq      
2014 04  29.43336  14 09 56.510  -20 06 57.47  20.7w 120216    F51  C~1voq      
2014 05  07.39884  14 08 56.516  -20 03 43.97  20.5r 120216    F51  C~1voq      
2014 05  07.40964  14 08 56.437  -20 03 43.69  20.8r 120216    F51  C~1voq      
2014 05  07.42018  14 08 56.360  -20 03 43.42  20.6r 120216    F51  C~1voq      
2014 05  07.43072  14 08 56.280  -20 03 43.14  20.6r 120216    F51  C~1voq      
2014 05  23.31522  14 07 04.523  -19 57 00.49  20.7w 120216    F51  C~1voq      
2014 05  23.32649  14 07 04.449  -19 57 00.19  20.8w 120216    F51  C~1voq      
2014 05  23.33777  14 07 04.374  -19 56 59.91  20.7w 120216    F51  C~1voq      
2014 05  23.34905  14 07 04.296  -19 56 59.63  20.6w 120216    F51  C~1voq      
2014 06  04.29930  14 05 52.084  -19 52 11.05  20.6i 120216    F51  C~1voq      
2014 06  04.31095  14 05 52.012  -19 52 10.75  20.6i 120216    F51  C~1voq      
2014 06  04.32257  14 05 51.940  -19 52 10.52  20.6i 120216    F51  C~1voq      
2014 06  04.33421  14 05 51.889  -19 52 10.19  20.5i 120216    F51  C~1voq      
2014 06  20.28885  14 04 38.426  -19 46 50.32  20.7w 120216    F51  C~1voq      
2014 06  20.30076  14 04 38.376  -19 46 50.07  20.9w 120216    F51  C~1voq      
2014 06  20.31265  14 04 38.330  -19 46 49.89  21.0w 120216    F51  C~1voq      
2014 06  20.32469  14 04 38.299  -19 46 49.60  20.9w 120216    F51  C~1voq      
2014 06  30.26826  14 04 08.347  -19 44 28.23  20.8w 120216    F51  C~1voq      
2014 06  30.28017  14 04 08.319  -19 44 27.95  20.9w 120216    F51  C~1voq      
2014 06  30.29204  14 04 08.289  -19 44 27.95  20.8w 120216    F51  C~1voq      
2014 06  30.30391  14 04 08.256  -19 44 27.75  20.9w 120216    F51  C~1voq      
2015 04  02.50018  14 22 03.279  -22 29 38.01  20.4i 120216    F51  C~1voq      
2015 04  02.51211  14 22 03.195  -22 29 37.73  20.6i 120216    F51  C~1voq      
2015 04  02.52403  14 22 03.114  -22 29 37.50  20.4i 120216    F51  C~1voq      
2015 04  02.53596  14 22 03.031  -22 29 37.46  20.4i 120216    F51  C~1voq      
2015 04  25.40814  14 19 13.580  -22 24 01.71  20.4i 120216    F51  C~1voq      
2015 04  25.42004  14 19 13.500  -22 24 01.54  20.5i 120216    F51  C~1voq      
2015 04  25.43196  14 19 13.396  -22 24 01.26  20.4i 120216    F51  C~1voq      
2015 04  25.44388  14 19 13.299  -22 24 00.94  20.7i 120216    F51  C~1voq      
2015 05  21.32523  14 15 58.726  -22 13 41.13  20.7w 120216    F51  C@0617      
2015 05  21.33734  14 15 58.638  -22 13 40.82  20.8w 120216    F51  C@0617      
2015 05  21.34954  14 15 58.548  -22 13 40.49  20.7w 120216    F51  C~1voq      
2015 05  21.36167  14 15 58.465  -22 13 40.13  20.8w 120216    F51  C@0617      
2015 06  18.29690  14 13 17.682  -22 02 19.90  21.1w 120216    F51  C~1voq      
2015 06  18.30920  14 13 17.621  -22 02 19.62  21.0w 120216    F51  C~1voq      
2015 06  18.32148  14 13 17.566  -22 02 19.33  21.0w 120216    F51  C~1voq      
2015 06  18.33378  14 13 17.518  -22 02 19.07  20.9w 120216    F51  C~1voq      
2015 06  19.28393  14 13 13.515  -22 01 59.38  20.8w 120216    F51  C~1voq      
2015 06  19.29583  14 13 13.464  -22 01 59.13  20.8w 120216    F51  C~1voq      
2015 06  19.30773  14 13 13.418  -22 01 58.86  20.8w 120216    F51  C~1voq      
2015 06  19.31961  14 13 13.367  -22 01 58.68  20.9w 120216    F51  C~1voq      

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    -0.18       0.00     0.86
  2   0.0000      0.00    -0.21       0.00    -0.23
  3   0.0000      0.00     0.18       0.00    -0.12
  4   1.0000      0.00    -0.32       0.00    -0.27
  5   1.0546      0.00     0.58       0.00    -0.45
  6   1.0573      0.00     0.25       0.00     0.19
  7   1.0866      0.00    -0.42       0.00    -0.38
  8   1.0867      0.00    -0.41       0.00    -0.07
  9   1.0867      0.00    -0.15       0.00     0.09
 10   1.0922      0.00    -0.13       0.00     0.72
 11   1.0924      0.00     1.54       0.00     0.49
 12   1.0926      0.00    -0.15       0.00    -0.08
 13   1.9961      0.00    -0.59       0.00     0.08
 14   1.9963      0.00     1.53       0.00    -0.22
 15   1.9965      0.00    -0.17       0.00    -0.18
 16   2.0700      0.00    -0.13       0.00    -0.01
 17   3.0065      0.00     0.43       0.00     0.03
 18   3.0066      0.00    -0.02       0.00     0.28
 19   3.0067      0.00     0.17       0.00    -0.04
 20   3.1044      0.00     0.33       0.00     0.08
 21   3.1046      0.00     0.35       0.00     0.15
 22   3.1049      0.00    -0.04       0.00    -1.49
 23   3.1156      0.00     0.14       0.00     0.27
 24   3.1156      0.00     0.10       0.00     0.30
 25   3.1157      0.00    -0.02       0.00     0.41
 26   3.1182      0.00     0.49       0.00     0.51
 27   3.1183      0.00     0.48       0.00     0.16
 28   3.1183      0.00     0.49       0.00     0.48
 29   4.0539      0.00    -0.57       0.00    -0.32
 30   4.0567      0.00     0.64       0.00    -0.08
 31   4.0839      0.00     0.16       0.00    -0.97
 32   4.0840      0.00    -0.52       0.00    -0.19
 33   4.2351      0.00     0.18       0.00     0.29
 34   4.2352      0.00     0.10       0.00     0.39
 35   4.2378      0.00     0.13       0.00     0.29
 36   4.2380      0.00     0.13       0.00     0.27
 37   5.1031      0.00     0.24       0.00    -0.02
 38   5.1032      0.00    -0.26       0.00     0.70
 39   5.1032      0.00    -0.75       0.00     0.22
 40   5.1032      0.00    -0.04       0.00     0.24
 41   8.0521      0.00    -0.18       0.00    -0.71
 42   8.0522      0.00    -0.00       0.00    -0.41
 43   8.0522      0.00     0.03       0.00    -0.11
 44   8.0522      0.00    -0.24       0.00    -0.40
 45   8.1114      0.00    -1.00       0.00     0.58
 46   8.2045      0.00     0.57       0.00    -0.08
 47   8.2046      0.00     0.51       0.00     0.13
 48   8.8721      0.00    -0.15       0.00    -0.26
 49   8.8721      0.00    -0.16       0.00    -0.22
 50   8.8721      0.00    -0.03       0.00    -0.27
 51   8.8721      0.00    -0.04       0.00    -0.22
 52   8.8721      0.00    -0.22       0.00    -0.33
 53   8.8721      0.00    -0.25       0.00    -0.34
 54   8.8722      0.00    -0.30       0.00    -0.37
 55   8.8723      0.00    -0.18       0.00    -0.48
 56   9.8322      0.00     0.12       0.00     0.17
 57   9.8323      0.00    -0.19       0.00    -0.45
 58  11.0231      0.00     0.13       0.00    -0.07
 59  11.0231      0.00     0.23       0.00    -0.25
 60  11.0231      0.00    -0.08       0.00    -0.31
 61  11.0232      0.00     0.16       0.00    -0.19
 62  12.0771      0.00     0.13       0.00    -0.01
 63  12.0771      0.00     0.21       0.00    -0.01
 64  12.0771      0.00     0.13       0.00    -0.02
 65  12.0772      0.00     0.18       0.00     0.01
 66  12.8305      0.00     0.04       0.00    -0.03
 67  12.8305      0.00    -0.07       0.00     0.05
 68  12.8305      0.00    -0.11       0.00     0.02
 69  12.8305      0.00    -0.01       0.00     0.07
 70  13.0655      0.00     0.13       0.00     0.00
 71  13.0655      0.00    -0.01       0.00    -0.05
 72  13.0656      0.00    -0.00       0.00    -0.06
 73  13.0656      0.00     0.01       0.00     0.06
 74  13.1310      0.00     0.18       0.00    -0.04
 75  13.1310      0.00     0.19       0.00    -0.07
 76  13.1311      0.00     0.17       0.00    -0.05
 77  13.1311      0.00     0.29       0.00    -0.04
 78  13.1529      0.00     0.13       0.00    -0.05
 79  13.1529      0.00     0.17       0.00    -0.04
 80  13.1529      0.00     0.21       0.00    -0.04
 81  13.1530      0.00     0.20       0.00    -0.02
 82  13.1965      0.00     0.09       0.00    -0.07
 83  13.1965      0.00     0.11       0.00    -0.05
 84  13.1965      0.00     0.11       0.00    -0.05
 85  13.1966      0.00     0.07       0.00    -0.06
 86  13.2293      0.00     0.07       0.00    -0.14
 87  13.2293      0.00    -0.03       0.00    -0.10
 88  13.2293      0.00    -0.13       0.00    -0.14
 89  13.2294      0.00     0.09       0.00    -0.07
 90  13.2731      0.00     0.04       0.00     0.05
 91  13.2731      0.00    -0.03       0.00     0.10
 92  13.2731      0.00    -0.04       0.00     0.07
 93  13.2732      0.00     0.18       0.00     0.16
 94  13.3004      0.00     0.04       0.00     0.06
 95  13.3004      0.00     0.06       0.00     0.20
 96  13.3004      0.00     0.05       0.00     0.06
 97  13.3005      0.00    -0.00       0.00     0.13
 98  14.0567      0.00     0.21       0.00    -0.23
 99  14.0567      0.00     0.20       0.00    -0.05
100  14.0567      0.00     0.22       0.00     0.09
101  14.0568      0.00     0.22       0.00     0.03
102  14.1194      0.00     0.19       0.00     0.05
103  14.1194      0.00     0.40       0.00    -0.02
104  14.1194      0.00     0.25       0.00     0.02
105  14.1195      0.00     0.21       0.00     0.10
106  14.1903      0.00     0.13       0.00     0.09
107  14.1904      0.00     0.10       0.00     0.08
108  14.1904      0.00     0.05       0.00     0.10
109  14.1904      0.00     0.10       0.00     0.14
110  14.2669      0.00     0.02       0.00     0.05
111  14.2669      0.00    -0.08       0.00     0.07
112  14.2670      0.00    -0.09       0.00     0.10
113  14.2670      0.00     0.00       0.00     0.10
114  14.2696      0.00    -0.09       0.00     0.09
115  14.2696      0.00    -0.09       0.00     0.10
116  14.2697      0.00    -0.02       0.00     0.12
117  14.2697      0.00    -0.02       0.00     0.06

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.

120216    quality flag:3

Type:           3:2E      3:2E      3:2E

axisobj        39.175    39.175    39.175
ecceobj         0.312     0.312     0.312
incobj         29.344    29.344    29.344
qmin           24.535    24.611    24.559
qmax           55.016    55.015    55.017
amean          39.453    39.453    39.453
amin           39.028    39.049    39.028
amax           40.004    40.003    40.004
emean           0.287     0.287     0.286
emin            0.152     0.152     0.153
emax            0.377     0.375     0.377
imean          29.760    29.765    29.769
imin           26.821    26.860    26.853
imax           33.002    33.004    32.999
excite_mean     0.577     0.577     0.577
fracstop        1.000     1.000     1.000
cjmean          2.661     2.661     2.661

libcent 0       179.0     178.9     179.2
libamp  0        66.6      67.7      67.8
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       269.8     270.0     270.1
kozaiamp         78.9      78.9      79.1