Orbit Fit and Astrometric record for 13KY18

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: 13KY18    
# Created Wed Nov 14 02:09:36 2018
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting  105 observations of  105
# Arc:   6.08y
# First observation: 2010/06/04
#  Last observation: 2016/07/01
# Chi-squared of fit:    79.08 DOF:  204 RMS:  0.15
# Min/Max residuals:    -0.53    0.70
# Exact a, adot, b, bdot, g, gdot:
  1.704130E-05  3.625430E-02 -1.646085E-06 -3.934176E-03  3.317124E-02 -4.499142E-03
# Covariance matrix:
  2.4788E-13 -1.2474E-13 -1.3707E-14  1.0529E-14 -5.1151E-14 -3.9401E-13
 -1.2474E-13  8.2546E-14  1.0707E-14 -8.2271E-15  3.6986E-14  3.0773E-13
 -1.3707E-14  1.0707E-14  1.2585E-13 -2.9618E-14  5.2413E-15  4.3810E-14
  1.0529E-14 -8.2271E-15 -2.9618E-14  8.2354E-15 -3.9884E-15 -3.3662E-14
 -5.1151E-14  3.6986E-14  5.2413E-15 -3.9884E-15  7.2223E-14  1.5157E-13
 -3.9401E-13  3.0773E-13  4.3810E-14 -3.3662E-14  1.5157E-13  1.2591E-12
#      lat0       lon0       xBary       yBary       zBary        JD0
    2.480173 -116.983187   -0.180885    0.043101   -0.996521  2455351.921676
# Heliocentric elements and errors
Epoch:              2455352.5000  =  2010/06/05
Mean Anomaly:          261.46429 +/-     0.014
Argument of Peri:      270.83243 +/-     0.010
Long of Asc Node:       84.40907 +/-     0.000
Inclination:             6.65770 +/-     0.000
Eccentricity:         0.12273295 +/-    0.0000
Semi-Major Axis:     30.16538897 +/-    0.0008
Time of Perihelion: 2471916.0321 +/-       2.9
Perihelion:          26.46310171 +/-    0.0011
Aphelion:            33.86767622 +/-    0.0013
Period (y)              165.6806 +/-      0.01
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -13.95240159 +/-    0.0001
Ecliptic Y          -27.81286730 +/-    0.0002
Ecliptic Z            1.30455411 +/-    0.0000
Ecliptic XDOT         0.00283005 +/-    0.0000
Ecliptic YDOT        -0.00103357 +/-    0.0000
Ecliptic ZDOT        -0.00034052 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   31.14371263 +/-    0.0002
Geocenter to KBO     30.14669592 +/-    0.0002
# Hcoef:  6.72

The following table shows the complete astrometric record for 13KY18. 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 (13KY18) followed by the observatory code and reference code for the source of the astrometry.

2010 06  04.42091  16 05 54.263  -18 19 37.27  21.9G 13KY18    F51  C~2jhC      
2010 06  04.43298  16 05 54.185  -18 19 37.08  21.5G 13KY18    F51  C~2jhC      
2010 06  07.37694  16 05 35.136  -18 18 54.11  21.4G 13KY18    F51  C~2jhC      
2010 06  07.38841  16 05 35.071  -18 18 53.98  21.3G 13KY18    F51  C~2jhC      
2011 05  29.40292  16 15 04.307  -18 57 30.49  20.7G 13KY18    F51  C~2jhD      
2011 06  06.39389  16 14 11.191  -18 55 37.23  21.3G 13KY18    F51  C~2jhD      
2011 06  06.40835  16 14 11.100  -18 55 37.17  20.9G 13KY18    F51  C~2jhD      
2011 06  06.42277  16 14 11.001  -18 55 36.79  21.3G 13KY18    F51  C~2jhD      
2011 06  06.43721  16 14 10.918  -18 55 36.72  21.5G 13KY18    F51  C~2jhD      
2013 05  16.43740  16 33 49.505  -20 09 02.89  21.3G 13KY18    F51  C~2jhD      
2013 05  16.43806  16 33 49.500  -20 09 02.84  21.5G 13KY18    F51  C~2jhD      
2013 05  16.45219  16 33 49.435  -20 09 02.94  20.9G 13KY18    F51  C~2jhD      
2013 05  16.45284  16 33 49.426  -20 09 02.73  21.2G 13KY18    F51  C~2jhD      
2013 05  16.46699  16 33 49.322  -20 09 02.60  21.2G 13KY18    F51  C~2jhD      
2013 05  16.46765  16 33 49.330  -20 09 02.34  21.0G 13KY18    F51  C~2jhD      
2013 05  16.46875  16 33 49.31   -20 09 02.5   21.2w 13KY18    F51  C~1tfQ      
2013 05  16.48047  16 33 49.23   -20 09 02.3   21.6w 13KY18    F51  C~1tfQ      
2013 05  16.48175  16 33 49.235  -20 09 02.37  21.3G 13KY18    F51  C~2jhD      
2013 05  16.48240  16 33 49.227  -20 09 02.34  21.2G 13KY18    F51  C~2jhD      
2013 05  16.51504  16 33 49.004  -20 09 01.96  19.1G 13KY18    F51  C~2jhD      
2013 06  07.41676  16 31 21.293  -20 04 37.07  21.2G 13KY18    F51  C~2jhD      
2013 06  07.41797  16 31 21.29   -20 04 37.1   21.5w 13KY18    F51  C~1tfQ      
2013 06  07.42969  16 31 21.21   -20 04 37.0   21.6w 13KY18    F51  C~1tfQ      
2013 06  07.43067  16 31 21.208  -20 04 36.99  21.3G 13KY18    F51  C~2jhD      
2013 06  07.44531  16 31 21.09   -20 04 36.9   21.5w 13KY18    F51  C~1tfQ      
2013 06  07.44724  16 31 21.087  -20 04 36.91  21.6G 13KY18    F51  C~2jhD      
2013 06  07.46094  16 31 20.99   -20 04 36.6   21.4w 13KY18    F51  C~1tfQ      
2013 06  07.46133  16 31 20.990  -20 04 36.61  21.4G 13KY18    F51  C~2jhD      
2013 06  28.37952  16 29 07.672  -20 01 00.61  21.3G 13KY18    F51  C~2jhD      
2013 07  01.31891  16 28 50.831  -20 00 35.79  21.6G 13KY18    F51  C~2jhD      
2013 07  01.32031  16 28 50.83   -20 00 35.7   21.6w 13KY18    F51  C~1tfQ      
2013 07  01.33203  16 28 50.76   -20 00 35.5   21.7w 13KY18    F51  C~1tfQ      
2013 07  01.33227  16 28 50.758  -20 00 35.63  21.8G 13KY18    F51  C~2jhD      
2013 07  01.34375  16 28 50.68   -20 00 35.6   21.5w 13KY18    F51  C~1tfQ      
2013 07  01.34563  16 28 50.677  -20 00 35.63  21.6G 13KY18    F51  C~2jhD      
2013 07  01.35895  16 28 50.596  -20 00 35.58  22.2G 13KY18    F51  C~2jhD      
2013 07  01.35938  16 28 50.60   -20 00 35.6   21.9w 13KY18    F51  C~1tfQ      
2014 02  26.62060  16 46 21.877  -20 48 00.73  21.8G 13KY18    F51  C~2jhD      
2014 04  03.57031  16 46 13.83   -20 47 20.9   21.7w 13KY18    F51  C~1tfQ      
2014 04  03.59600  16 46 13.750  -20 47 20.92  21.7G 13KY18    F51  C~2jhD      
2014 04  03.59766  16 46 13.76   -20 47 21.1   21.8w 13KY18    F51  C~1tfQ      
2014 04  03.60938  16 46 13.71   -20 47 20.7   21.9w 13KY18    F51  C~1tfQ      
2014 05  03.47153  16 44 04.459  -20 43 32.10  21.4G 13KY18    F51  C~2jhD      
2014 05  03.48232  16 44 04.387  -20 43 31.79  21.6G 13KY18    F51  C~2jhD      
2014 05  03.49308  16 44 04.318  -20 43 31.58  22.6G 13KY18    F51  C~2jhD      
2014 05  03.50384  16 44 04.268  -20 43 31.59  22.3G 13KY18    F51  C~2jhD      
2014 05  21.44071  16 42 11.775  -20 40 25.87  21.5G 13KY18    F51  C~2jhD      
2014 05  21.45382  16 42 11.695  -20 40 25.62  21.6G 13KY18    F51  C~2jhD      
2014 05  21.46689  16 42 11.588  -20 40 25.38  20.9G 13KY18    F51  C~2jhD      
2014 05  21.47998  16 42 11.524  -20 40 25.39  21.0G 13KY18    F51  C~2jhD      
2014 05  28.43279  16 41 24.421  -20 39 10.10  21.0G 13KY18    F51  C~2jhD      
2014 06  03.39921  16 40 43.480  -20 38 05.98  21.7G 13KY18    F51  C~2jhD      
2014 06  04.42013  16 40 36.440  -20 37 55.53  19.4G 13KY18    F51  C~2jhD      
2014 06  18.41002  16 39 02.089  -20 35 33.44  21.4G 13KY18    F51  C~2jhD      
2014 06  26.35734  16 38 11.473  -20 34 21.42  21.9G 13KY18    F51  C~2jhD      
2014 06  28.33546  16 37 59.406  -20 34 05.23  21.6G 13KY18    F51  C~2jhD      
2014 06  28.34603  16 37 59.340  -20 34 05.05  21.6G 13KY18    F51  C~2jhD      
2014 06  28.35662  16 37 59.280  -20 34 04.95  21.5G 13KY18    F51  C~2jhD      
2014 06  28.36721  16 37 59.212  -20 34 04.87  21.7G 13KY18    F51  C~2jhD      
2014 07  31.26712  16 35 26.520  -20 31 24.35  21.7G 13KY18    F51  C~2jhD      
2014 07  31.27838  16 35 26.475  -20 31 24.39  20.9G 13KY18    F51  C~2jhD      
2015 03  20.61864  16 55 30.057  -21 17 32.87  21.9G 13KY18    F51  C~2jhD      
2015 03  20.62874  16 55 30.062  -21 17 32.60  21.3G 13KY18    F51  C~2jhD      
2015 03  20.62940  16 55 30.069  -21 17 32.26  21.3G 13KY18    F51  C~2jhD      
2015 03  20.63955  16 55 30.043  -21 17 32.77  21.8G 13KY18    F51  C~2jhD      
2015 03  20.64023  16 55 30.037  -21 17 32.74  21.5G 13KY18    F51  C~2jhD      
2015 03  21.57893  16 55 29.542  -21 17 31.93  21.5G 13KY18    F51  C~2jhD      
2015 03  21.57959  16 55 29.537  -21 17 31.73  21.7G 13KY18    F51  C~2jhD      
2015 03  21.58956  16 55 29.535  -21 17 31.79  21.9G 13KY18    F51  C~2jhD      
2015 03  21.59021  16 55 29.539  -21 17 31.63  22.0G 13KY18    F51  C~2jhD      
2015 03  21.60019  16 55 29.520  -21 17 31.81  21.7G 13KY18    F51  C~2jhD      
2015 03  21.60085  16 55 29.521  -21 17 31.80  21.6G 13KY18    F51  C~2jhD      
2015 03  21.61083  16 55 29.512  -21 17 31.86  21.7G 13KY18    F51  C~2jhD      
2015 03  21.61150  16 55 29.509  -21 17 31.77  21.7G 13KY18    F51  C~2jhD      
2015 05  20.44149  16 51 22.721  -21 11 31.19  21.5G 13KY18    F51  C~2jhD      
2015 05  20.45359  16 51 22.611  -21 11 31.08  21.4G 13KY18    F51  C~2jhD      
2015 05  20.46572  16 51 22.527  -21 11 30.98  21.5G 13KY18    F51  C~2jhD      
2015 05  20.47781  16 51 22.469  -21 11 30.82  21.5G 13KY18    F51  C~2jhD      
2015 05  21.43702  16 51 16.084  -21 11 22.28  21.2G 13KY18    F51  C~2jhD      
2015 05  21.44908  16 51 16.007  -21 11 22.01  21.1G 13KY18    F51  C~2jhD      
2015 05  21.47332  16 51 15.869  -21 11 22.18  20.4G 13KY18    F51  C~2jhD      
2015 06  11.36732  16 48 52.583  -21 08 08.10  20.8G 13KY18    F51  C~2jhD      
2015 06  11.37941  16 48 52.514  -21 08 07.99  21.0G 13KY18    F51  C~2jhD      
2015 06  11.39147  16 48 52.430  -21 08 07.77  21.2G 13KY18    F51  C~2jhD      
2015 06  11.40357  16 48 52.352  -21 08 07.55  21.6G 13KY18    F51  C~2jhD      
2015 06  13.38501  16 48 38.765  -21 07 49.85  21.5G 13KY18    F51  C~2jhD      
2015 06  13.39711  16 48 38.676  -21 07 49.71  21.4G 13KY18    F51  C~2jhD      
2015 06  17.71477  16 48 09.43   -21 07 11.9   22.3  13KY18    D35  C~1tfQ      
2015 06  17.72924  16 48 09.34   -21 07 11.4   22.3  13KY18    D35  C~1tfQ      
2015 06  17.74009  16 48 09.27   -21 07 11.8   22.2  13KY18    D35  C~1tfQ      
2015 07  12.35676  16 45 39.772  -21 04 16.15  21.5G 13KY18    F51  C~2jhD      
2015 07  12.36853  16 45 39.713  -21 04 16.15  21.8G 13KY18    F51  C~2jhD      
2015 07  12.38033  16 45 39.650  -21 04 16.05  21.4G 13KY18    F51  C~2jhD      
2015 07  12.39214  16 45 39.588  -21 04 15.91  21.3G 13KY18    F51  C~2jhD      
2015 08  06.29207  16 44 01.753  -21 03 07.75  22.2G 13KY18    F51  C~2jhD      
2015 08  06.30374  16 44 01.737  -21 03 07.76  21.5G 13KY18    F51  C~2jhD      
2015 08  06.31545  16 44 01.696  -21 03 07.71  21.5G 13KY18    F51  C~2jhD      
2015 08  06.32718  16 44 01.665  -21 03 07.78  21.7G 13KY18    F51  C~2jhD      
2016 06  08.44446  16 58 18.997  -21 38 15.87  21.6G 13KY18    F51  C~2jhD      
2016 06  08.45419  16 58 18.930  -21 38 15.89  21.6G 13KY18    F51  C~2jhD      
2016 06  08.46392  16 58 18.863  -21 38 15.66  21.4G 13KY18    F51  C~2jhD      
2016 06  08.47367  16 58 18.803  -21 38 15.58  21.5G 13KY18    F51  C~2jhD      
2016 06  13.41862  16 57 44.440  -21 37 37.76  21.6G 13KY18    F51  C~2jhD      
2016 06  23.38352  16 56 36.917  -21 36 24.82  21.2G 13KY18    F51  C~2jhD      
2016 07  01.39035  16 55 45.587  -21 35 32.38  20.9G 13KY18    F51  C~2jhD      

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    -0.06
  2   0.0000      0.00     0.07       0.00    -0.05
  3   0.0081      0.00    -0.20       0.00     0.01
  4   0.0081      0.00    -0.04       0.00    -0.02
  5   0.9828      0.00    -0.13       0.00    -0.11
  6   1.0047      0.00    -0.00       0.00     0.06
  7   1.0048      0.00     0.09       0.00    -0.08
  8   1.0048      0.00     0.05       0.00     0.11
  9   1.0048      0.00     0.25       0.00    -0.02
 10   2.9487      0.00    -0.25       0.00     0.02
 11   2.9487      0.00    -0.26       0.00     0.06
 12   2.9488      0.00     0.17       0.00    -0.21
 13   2.9488      0.00     0.10       0.00    -0.01
 14   2.9488      0.00    -0.04       0.00    -0.05
 15   2.9488      0.00     0.14       0.00     0.20
 16   2.9488      0.00    -0.05       0.00     0.03
 17   2.9488      0.00    -0.07       0.00     0.09
 18   2.9488      0.00     0.13       0.00     0.00
 19   2.9488      0.00     0.07       0.00     0.02
 20   2.9489      0.00    -0.01       0.00     0.00
 21   3.0089      0.00    -0.04       0.00     0.07
 22   3.0089      0.00     0.04       0.00     0.03
 23   3.0089      0.00     0.05       0.00    -0.01
 24   3.0089      0.00     0.12       0.00    -0.01
 25   3.0090      0.00    -0.14       0.00    -0.09
 26   3.0090      0.00     0.01       0.00    -0.12
 27   3.0090      0.00    -0.03       0.00     0.03
 28   3.0090      0.00     0.01       0.00     0.01
 29   3.0663      0.00     0.06       0.00    -0.01
 30   3.0743      0.00     0.03       0.00     0.04
 31   3.0743      0.00     0.13       0.00     0.12
 32   3.0744      0.00     0.09       0.00     0.23
 33   3.0744      0.00     0.08       0.00     0.09
 34   3.0744      0.00    -0.10       0.00     0.03
 35   3.0744      0.00     0.02       0.00    -0.01
 36   3.0744      0.00    -0.05       0.00    -0.07
 37   3.0744      0.00     0.05       0.00    -0.10
 38   3.7322      0.00     0.13       0.00    -0.16
 39   3.8307      0.00    -0.01       0.00     0.29
 40   3.8307      0.00    -0.14       0.00     0.14
 41   3.8307      0.00     0.08       0.00    -0.05
 42   3.8308      0.00    -0.18       0.00     0.29
 43   3.9125      0.00     0.06       0.00    -0.07
 44   3.9126      0.00    -0.07       0.00     0.14
 45   3.9126      0.00    -0.16       0.00     0.24
 46   3.9126      0.00     0.04       0.00     0.13
 47   3.9617      0.00    -0.01       0.00    -0.09
 48   3.9618      0.00     0.13       0.00     0.02
 49   3.9618      0.00    -0.14       0.00     0.12
 50   3.9618      0.00     0.24       0.00    -0.04
 51   3.9809      0.00    -0.07       0.00    -0.03
 52   3.9972      0.00     0.01       0.00    -0.12
 53   4.0000      0.00    -0.37       0.00    -0.53
 54   4.0383      0.00     0.07       0.00    -0.26
 55   4.0601      0.00    -0.05       0.00     0.16
 56   4.0655      0.00    -0.04       0.00    -0.11
 57   4.0655      0.00    -0.06       0.00    -0.02
 58   4.0655      0.00     0.02       0.00    -0.00
 59   4.0656      0.00    -0.02       0.00    -0.01
 60   4.1556      0.00    -0.01       0.00    -0.07
 61   4.1557      0.00    -0.17       0.00    -0.12
 62   4.7918      0.00    -0.01       0.00    -0.07
 63   4.7918      0.00     0.16       0.00     0.19
 64   4.7918      0.00     0.27       0.00     0.53
 65   4.7918      0.00    -0.03       0.00     0.01
 66   4.7918      0.00    -0.11       0.00     0.04
 67   4.7944      0.00     0.02       0.00    -0.15
 68   4.7944      0.00    -0.04       0.00     0.05
 69   4.7944      0.00     0.03       0.00    -0.02
 70   4.7944      0.00     0.10       0.00     0.14
 71   4.7945      0.00    -0.07       0.00    -0.05
 72   4.7945      0.00    -0.05       0.00    -0.04
 73   4.7945      0.00    -0.08       0.00    -0.11
 74   4.7945      0.00    -0.11       0.00    -0.02
 75   4.9583      0.00     0.31       0.00     0.06
 76   4.9583      0.00    -0.12       0.00     0.06
 77   4.9584      0.00    -0.15       0.00     0.05
 78   4.9584      0.00     0.20       0.00     0.10
 79   4.9610      0.00    -0.13       0.00    -0.21
 80   4.9611      0.00    -0.06       0.00    -0.05
 81   4.9611      0.00     0.34       0.00    -0.45
 82   5.0183      0.00    -0.32       0.00    -0.25
 83   5.0184      0.00    -0.09       0.00    -0.24
 84   5.0184      0.00    -0.08       0.00    -0.13
 85   5.0184      0.00     0.02       0.00    -0.02
 86   5.0239      0.00    -0.07       0.00    -0.06
 87   5.0239      0.00    -0.14       0.00    -0.03
 88   5.0357      0.00     0.51       0.00     0.03
 89   5.0358      0.00     0.64       0.00     0.40
 90   5.0358      0.00     0.70       0.00    -0.10
 91   5.1032      0.00    -0.07       0.00     0.03
 92   5.1032      0.00    -0.02       0.00    -0.03
 93   5.1032      0.00    -0.02       0.00     0.00
 94   5.1033      0.00    -0.01       0.00     0.08
 95   5.1714      0.00    -0.18       0.00    -0.03
 96   5.1715      0.00     0.04       0.00    -0.04
 97   5.1715      0.00    -0.11       0.00     0.00
 98   5.1715      0.00    -0.12       0.00    -0.07
 99   6.0124      0.00    -0.16       0.00     0.09
100   6.0124      0.00    -0.13       0.00    -0.01
101   6.0124      0.00    -0.10       0.00     0.14
102   6.0125      0.00     0.04       0.00     0.15
103   6.0260      0.00    -0.02       0.00    -0.08
104   6.0533      0.00     0.18       0.00     0.11
105   6.0752      0.00    -0.25       0.00    -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.

13KY18    quality flag:2

Type:            1:1  CENTAURR       1:1

axisobj        30.004    30.004    30.004
ecceobj         0.124     0.124     0.124
incobj          6.668     6.668     6.668
qmin           26.086    25.286    26.010
qmax           34.574    37.047    34.566
amean          30.110    30.129    30.110
amin           29.755    29.265    29.742
amax           30.581    32.232    30.581
emean           0.105     0.107     0.105
emin            0.081     0.082     0.081
emax            0.131     0.165     0.130
imean           5.341     5.690     5.318
imin            5.014     2.110     5.014
imax            6.070     7.613     5.971
excite_mean     0.140     0.147     0.140
fracstop        1.000     0.643     1.000
cjmean          2.979     2.978     2.979

libcent 0       288.5    -180.0     288.8
libamp  0        35.3    -180.0      34.4
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       179.3     178.6     179.3
kozaiamp        179.9     180.0     180.0