Orbit Fit and Astrometric record for 13MY11

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: 13MY11    
# Created Mon Oct 23 01:38:18 2017
# Orbit generated from Bernstein formalism
# Fitting   41 observations of   41
# Arc:   3.91y
# First observation: 2011/07/31
#  Last observation: 2015/06/29
Preliminary a, adot, b, bdot, g, gdot:
  -0.001596   0.081728   0.000216  -0.020133   0.054029   0.000000
# Chi-squared of fit:    11.34 DOF:   76 RMS:  0.09
# Min/Max residuals:    -0.28    0.25
# Exact a, adot, b, bdot, g, gdot:
  2.601104E-05  8.068999E-02 -7.686577E-06 -1.990183E-02  4.870579E-02  8.558430E-04
# Covariance matrix:
  4.6993E-13 -3.2198E-13 -3.3570E-14  5.1392E-14 -1.3969E-13 -6.5171E-13
 -3.2198E-13  3.4746E-13  4.8239E-14 -7.4053E-14  1.5855E-13  9.4287E-13
 -3.3570E-14  4.8239E-14  3.2553E-13 -1.2064E-13  2.4436E-14  1.4901E-13
  5.1392E-14 -7.4053E-14 -1.2064E-13  5.9941E-14 -3.6318E-14 -2.2898E-13
 -1.3969E-13  1.5855E-13  2.4436E-14 -3.6318E-14  3.2826E-13  4.4013E-13
 -6.5171E-13  9.4287E-13  1.4901E-13 -2.2898E-13  4.4013E-13  2.9200E-12
#      lat0       lon0       xBary       yBary       zBary        JD0
   -4.670673  -63.314465   -0.190391   -0.081104   -0.991971  2455773.904526
# Heliocentric elements and errors
Epoch:              2455770.5000  =  2011/07/28
Mean Anomaly:            0.53820 +/-     0.001
Argument of Peri:      195.45375 +/-     0.003
Long of Asc Node:       99.68624 +/-     0.000
Inclination:            14.51058 +/-     0.000
Eccentricity:         0.58789880 +/-    0.0000
Semi-Major Axis:     52.21392449 +/-    0.0067
Time of Perihelion: 2455564.4771 +/-       0.3
Perihelion:          21.51742082 +/-    0.0038
Aphelion:            82.91042816 +/-    0.0110
Period (y)              377.3008 +/-      0.07
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X            9.81126315 +/-    0.0001
Ecliptic Y          -19.08658346 +/-    0.0002
Ecliptic Z           -1.67194810 +/-    0.0000
Ecliptic XDOT         0.00403036 +/-    0.0000
Ecliptic YDOT         0.00208108 +/-    0.0000
Ecliptic ZDOT        -0.00111887 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   21.52565825 +/-    0.0002
Geocenter to KBO     20.53144179 +/-    0.0002
# Hcoef:  8.40

The following table shows the complete astrometric record for 13MY11. 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 (13MY11) followed by the observatory code and reference code for the source of the astrometry.

2011 07  31.40376  19 58 48.651  -25 24 00.35  21.8w 13MY11    F51  C~1vWz      
2011 07  31.41857  19 58 48.514  -25 24 01.13  21.6w 13MY11    F51  C~1vWz      
2011 07  31.44819  19 58 48.265  -25 24 01.97  21.4w 13MY11    F51  C~1vWz      
2013 06  30.48163  20 44 50.030  -25 03 27.00  21.7r 13MY11    F51  C~1vWz      
2013 06  30.49132  20 44 49.968  -25 03 27.47  21.6r 13MY11    F51  C~1vWz      
2013 06  30.50250  20 44 49.888  -25 03 28.04  21.3i 13MY11    F51  C~1vWz      
2013 06  30.51351  20 44 49.790  -25 03 28.59  21.6i 13MY11    F51  C~1vWz      
2013 07  13.47486  20 43 11.944  -25 13 27.62  21.6w 13MY11    F51  C~1vWz      
2013 07  13.49442  20 43 11.787  -25 13 28.54  21.8w 13MY11    F51  C~1vWz      
2013 07  13.50903  20 43 11.677  -25 13 29.23  21.7w 13MY11    F51  C~1vWz      
2013 08  02.40074  20 40 23.074  -25 27 55.67  21.6w 13MY11    F51  C~1vWz      
2013 08  02.41438  20 40 22.952  -25 27 56.25  21.7w 13MY11    F51  C~1vWz      
2013 08  02.42803  20 40 22.824  -25 27 57.06  22.1w 13MY11    F51  C~1vWz      
2013 08  02.44169  20 40 22.709  -25 27 57.28  21.6w 13MY11    F51  C~1vWz      
2014 07  27.43149  21 01 49.931  -25 08 14.92  21.7w 13MY11    F51  C~1vWz      
2014 07  27.44341  21 01 49.826  -25 08 15.50  21.6w 13MY11    F51  C~1vWz      
2014 07  27.45531  21 01 49.726  -25 08 15.96  21.5w 13MY11    F51  C~1vWz      
2014 07  27.46721  21 01 49.633  -25 08 16.54  21.5w 13MY11    F51  C~1vWz      
2014 07  29.45300  21 01 32.930  -25 09 48.89  21.5w 13MY11    F51  C~1vWz      
2014 07  29.46355  21 01 32.843  -25 09 49.05  21.4w 13MY11    F51  C~1vWz      
2014 07  29.47409  21 01 32.750  -25 09 49.67  21.7w 13MY11    F51  C~1vWz      
2014 07  29.48462  21 01 32.658  -25 09 50.20  21.7w 13MY11    F51  C~1vWz      
2014 07  30.39037  21 01 25.029  -25 10 31.71  21.6w 13MY11    F51  C~1vWz      
2014 07  30.40227  21 01 24.927  -25 10 32.25  21.7w 13MY11    F51  C~1vWz      
2014 07  30.41418  21 01 24.815  -25 10 32.78  21.6w 13MY11    F51  C~1vWz      
2014 07  30.42611  21 01 24.726  -25 10 33.33  21.6w 13MY11    F51  C~1vWz      
2014 07  30.47505  21 01 24.304  -25 10 35.46  21.7w 13MY11    F51  C~1vWz      
2014 07  30.48584  21 01 24.203  -25 10 35.99  21.6w 13MY11    F51  C~1vWz      
2014 07  30.49665  21 01 24.102  -25 10 36.54  21.6w 13MY11    F51  C~1vWz      
2014 07  30.50744  21 01 24.009  -25 10 37.05  21.6w 13MY11    F51  C~1vWz      
2014 08  22.38689  20 58 12.102  -25 26 00.36  21.9w 13MY11    F51  C~1vWz      
2014 08  22.39837  20 58 12.018  -25 26 00.66  21.7w 13MY11    F51  C~1vWz      
2014 08  22.40983  20 58 11.928  -25 26 01.04  21.8w 13MY11    F51  C~1vWz      
2014 08  22.42128  20 58 11.831  -25 26 01.48  21.7w 13MY11    F51  C~1vWz      
2014 09  28.25835  20 54 27.163  -25 38 01.49  21.7w 13MY11    F51  C~1vWz      
2014 09  28.27064  20 54 27.100  -25 38 01.63  21.9w 13MY11    F51  C~1vWz      
2014 09  28.28299  20 54 27.061  -25 38 01.66  21.9w 13MY11    F51  C~1vWz      
2014 09  28.29557  20 54 27.002  -25 38 01.67  22.0w 13MY11    F51  C~1vWz      
2015 06  29.53866  21 25 08.192  -24 18 49.80  21.6i 13MY11    F51  C~1vX0      
2015 06  29.56068  21 25 08.075  -24 18 50.73  21.6i 13MY11    F51  C~1vX0      
2015 06  29.57168  21 25 08.006  -24 18 51.29  21.6i 13MY11    F51  C~1vX0      

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     0.04       0.00     0.25
  2   0.0000     -1.97    -0.10      -0.40    -0.03
  3   0.0001     -5.45     0.09      -0.55     0.05
  4   1.9167  37070.24     0.04   -7869.81     0.04
  5   1.9167  37069.27     0.12   -7870.03    -0.01
  6   1.9168  37068.02     0.10   -7870.27    -0.06
  7   1.9168  37066.54    -0.17   -7870.42    -0.02
  8   1.9523  35578.25    -0.06   -8072.39    -0.02
  9   1.9523  35575.88    -0.00   -8072.68    -0.06
 10   1.9524  35574.20     0.13   -8072.92    -0.12
 11   2.0068  33069.54     0.05   -8269.92    -0.04
 12   2.0069  33067.74     0.02   -8270.02    -0.06
 13   2.0069  33065.80    -0.15   -8270.32    -0.28
 14   2.0069  33064.20     0.01   -8270.10     0.02
 15   2.9898  50856.35    -0.08  -12431.81    -0.07
 16   2.9898  50854.72    -0.12  -12431.91    -0.08
 17   2.9899  50853.19    -0.07  -12431.91     0.01
 18   2.9899  50851.73     0.05  -12432.06    -0.06
 19   2.9953  50592.37    -0.14  -12447.90    -0.21
 20   2.9954  50591.12     0.02  -12447.66     0.09
 21   2.9954  50589.65    -0.05  -12447.86    -0.03
 22   2.9954  50588.21    -0.08  -12447.96    -0.07
 23   2.9979  50470.04     0.02  -12454.59    -0.04
 24   2.9979  50468.46     0.04  -12454.66    -0.03
 25   2.9980  50466.76    -0.08  -12454.68     0.03
 26   2.9980  50465.36     0.11  -12454.82    -0.04
 27   2.9981  50458.87     0.16  -12455.03     0.07
 28   2.9982  50457.32     0.04  -12455.09     0.06
 29   2.9982  50455.75    -0.08  -12455.18     0.04
 30   2.9982  50454.31    -0.09  -12455.27     0.02
 31   3.0609  47533.82    -0.18  -12513.09     0.03
 32   3.0609  47532.58    -0.02  -12513.01     0.07
 33   3.0609  47531.24     0.04  -12512.99     0.06
 34   3.0610  47529.78    -0.03  -12513.00     0.02
 35   3.1618  44252.17     0.25  -12251.39     0.08
 36   3.1619  44251.28    -0.01  -12251.26     0.07
 37   3.1619  44250.74     0.09  -12251.12     0.06
 38   3.1619  44249.94    -0.06  -12250.88     0.15
 39   3.9128  71573.17     0.01  -16325.40    -0.06
 40   3.9128  71571.12     0.14  -16325.70     0.08
 41   3.9128  71569.91     0.01  -16325.89     0.11

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.

13MY11    quality flag:3

Type:       CENTAURR  CENTAURR  CENTAURR

axisobj        51.648    51.666    51.630
ecceobj         0.584     0.584     0.584
incobj         14.519    14.519    14.519
qmin           21.309    21.315    21.185
qmax           85.536    87.146    84.080
amean          52.358    53.367    50.977
amin           51.603    51.667    49.862
amax           53.552    54.703    52.795
emean           0.578     0.586     0.569
emin            0.556     0.565     0.552
emax            0.597     0.600     0.593
imean          14.827    14.489    14.408
imin           12.847    12.867    12.759
imax           17.518    16.767    15.551
excite_mean     0.633     0.637     0.622
fracstop        0.054     0.046     0.072
cjmean          2.655     2.653     2.663

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       218.2     218.3     237.6
kozaiamp         21.0      21.6      38.9