Orbit Fit and Astrometric record for 468861

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: 468861    
# Created Tue Oct 24 01:36:48 2017
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting  102 observations of  102
# Arc:   3.98y
# First observation: 2013/06/08
#  Last observation: 2017/06/01
# Chi-squared of fit:   484.33 DOF:  198 RMS:  0.39
# Min/Max residuals:    -1.80    1.43
# Exact a, adot, b, bdot, g, gdot:
 -1.536221E-05 -4.299445E-02  1.165938E-05  3.939992E-02  4.743471E-02 -6.507131E-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
   40.137116 -119.289941   -0.295130    0.627781   -0.744539  2456451.878468
# Heliocentric elements and errors
Epoch:              2456452.5000  =  2013/06/09
Mean Anomaly:          358.31346 +/-     0.000
Argument of Peri:      152.98832 +/-     0.000
Long of Asc Node:      276.13191 +/-     0.000
Inclination:           125.41966 +/-     0.000
Eccentricity:         0.95050503 +/-    0.0000
Semi-Major Axis:    177.10558781 +/-    0.0000
Time of Perihelion: 2460485.6141 +/-       0.0
Perihelion:           8.76583646 +/-    0.0000
Aphelion:           345.44533915 +/-    0.0000
Period (y)             2356.9838 +/-      0.00
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           -8.10386134 +/-    0.0000
Ecliptic Y          -15.04742779 +/-    0.0000
Ecliptic Z           13.58986019 +/-    0.0000
Ecliptic XDOT        -0.00004871 +/-    0.0000
Ecliptic YDOT         0.00499651 +/-    0.0000
Ecliptic ZDOT        -0.00068236 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   21.83580299 +/-    0.0000
Geocenter to KBO     21.08210025 +/-    0.0000
# Hcoef:  8.06

The following table shows the complete astrometric record for 468861. 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 (468861) followed by the observatory code and reference code for the source of the astrometry.

2013 06  08.37769  16 26 46.28   +19 02 18.3   21.7V 468861    G96  C~0sqr      
2013 06  08.38441  16 26 46.17   +19 02 18.2   21.3V 468861    G96  C~0sqr      
2013 06  08.39116  16 26 46.06   +19 02 18.5   21.3V 468861    G96  C~0sqr      
2013 06  08.39794  16 26 46.03   +19 02 18.6   21.6V 468861    G96  C~0sqr      
2013 06  09.20732  16 26 35.69   +19 02 42.3   20.9R 468861    H01  C~0sqr      
2013 06  09.21206  16 26 35.63   +19 02 42.4   21.0R 468861    H01  C~0sqr      
2013 06  09.23338  16 26 35.36   +19 02 43.0   21.0R 468861    H01  C~0sqr      
2013 06  09.24056  16 26 35.27   +19 02 43.2   21.3R 468861    H01  C~0sqr      
2013 06  12.29998  16 25 56.39   +19 04 00.8         468861    G96  C~0sqr      
2013 06  12.30312  16 25 56.39   +19 04 00.8   21.2V 468861    G96  C~0sqr      
2013 06  12.31737  16 25 56.20   +19 04 01.2   21.4V 468861    G96  C~0sqr      
2013 06  12.32054  16 25 56.16   +19 04 01.4   21.6V 468861    G96  C~0sqr      
2013 06  12.32366  16 25 56.15   +19 04 00.8   21.3V 468861    G96  C~0sqr      
2013 06  13.28502  16 25 44.01   +19 04 22.1   21.2R 468861    291  C~0sqr      
2013 06  13.33668  16 25 43.42   +19 04 22.6         468861    291  C~0sqr      
2013 06  14.01052  16 25 34.89   +19 04 35.9         468861    J95  C~0sqr      
2013 06  14.03764  16 25 34.58   +19 04 36.1   21.3R 468861    J95  C~0sqr      
2013 06  14.25941  16 25 31.83   +19 04 41.0   22.0V 468861    G96  C~0sqr      
2013 06  14.26554  16 25 31.72   +19 04 41.3   21.7V 468861    G96  C~0sqr      
2013 06  14.27174  16 25 31.62   +19 04 41.1   21.4V 468861    G96  C~0sqr      
2013 06  15.217402 16 25 19.820  +19 04 57.71  21.5R 468861    695  C~0sqr      
2013 06  15.231557 16 25 19.641  +19 04 58.10  21.7R 468861    695  C~0sqr      
2013 06  15.246127 16 25 19.446  +19 04 58.29  21.2R 468861    695  C~0sqr      
2013 06  15.27980  16 25 19.05   +19 04 58.7   21.6V 468861    G96  C~0sqr      
2013 06  15.28828  16 25 18.91   +19 04 59.0   20.9V 468861    G96  C~0sqr      
2013 06  15.29668  16 25 18.84   +19 04 59.4   21.1V 468861    G96  C~0sqr      
2013 06  15.30500  16 25 18.73   +19 04 59.1   21.4V 468861    G96  C~0sqr      
2014 04  09.45072  16 30 30.80   +20 27 33.3   20.7R 468861    F51  C~16WY      
2014 04  09.46420  16 30 30.67   +20 27 34.9   20.8R 468861    F51  C~16WY      
2014 04  09.47765  16 30 30.50   +20 27 36.7   20.5R 468861    F51  C~16WY      
2014 04  09.49112  16 30 30.38   +20 27 38.5   20.7R 468861    F51  C~16WY      
2014 06  01.31614  16 19 29.18   +21 51 21.9   21.1V 468861    G96  C~158B      
2014 06  01.32238  16 19 29.09   +21 51 22.6   20.9V 468861    G96  C~158B      
2014 06  01.32862  16 19 29.02   +21 51 22.6   20.8V 468861    G96  C~158B      
2014 06  01.33486  16 19 28.91   +21 51 23.2   20.9V 468861    G96  C~158B      
2014 06  01.39824  16 19 27.98   +21 51 25.9         468861    I52  C~158B      
2014 06  01.40478  16 19 27.91   +21 51 26.4         468861    I52  C~158B      
2014 06  01.41131  16 19 27.80   +21 51 26.6         468861    I52  C~158B      
2014 06  02.40092  16 19 13.80   +21 52 09.6   20.5V 468861    G96  C~158B      
2014 06  02.40347  16 19 13.80   +21 52 09.8   21.1V 468861    G96  C~158B      
2014 06  02.40603  16 19 13.76   +21 52 10.2   21.2V 468861    G96  C~158B      
2014 06  02.40858  16 19 13.73   +21 52 10.4   21.1V 468861    G96  C~158B      
2014 06  02.41112  16 19 13.69   +21 52 10.2   21.0V 468861    G96  C~158B      
2014 06  03.28458  16 19 01.39   +21 52 46.7   21.4V 468861    G96  C~158B      
2014 06  03.28721  16 19 01.36   +21 52 46.7   21.0V 468861    G96  C~158B      
2014 06  03.28982  16 19 01.32   +21 52 47.0   21.4V 468861    G96  C~158B      
2014 06  03.29240  16 19 01.29   +21 52 47.4   21.0V 468861    G96  C~158B      
2014 06  03.29501  16 19 01.26   +21 52 47.3   21.2V 468861    G96  C~158B      
2014 06  07.35677  16 18 04.17   +21 55 15.1         468861    H06  C~16WY      
2014 06  07.35976  16 18 04.09   +21 55 15.0         468861    H06  C~16WY      
2014 06  07.36275  16 18 04.04   +21 55 15.3   21.0w 468861    H06  C~16WY      
2014 06  18.49655  16 15 31.36   +21 58 58.0   21.4R 468861    F51  C~16WY      
2014 06  18.51050  16 15 31.22   +21 58 58.4   20.8R 468861    F51  C~16WY      
2014 06  18.52461  16 15 31.02   +21 58 58.5   21.4R 468861    F51  C~16WY      
2014 06  28.22554  16 13 25.85   +21 58 38.2   20.8R 468861    G37  C~16WY      
2014 06  28.28406  16 13 25.12   +21 58 37.4         468861    G37  C~16WY      
2015 05  28.34808  16 09 57.54   +25 05 47.4   20.9V 468861    G96  C~1SlS      
2015 05  28.35319  16 09 57.45   +25 05 47.7   21.2V 468861    G96  C~1SlS      
2015 05  28.35831  16 09 57.38   +25 05 48.2   20.7V 468861    G96  C~1SlS      
2015 05  28.36343  16 09 57.27   +25 05 48.0   20.5V 468861    G96  C~1SlS      
2015 05  29.17837  16 09 44.54   +25 06 33.2   21.2R 468861    926  C~1SlS      
2015 05  29.20020  16 09 44.19   +25 06 34.5   20.7R 468861    926  C~1SlS      
2015 05  29.22019  16 09 43.81   +25 06 35.6   20.5R 468861    926  C~1SlS      
2015 05  29.42723  16 09 40.56   +25 06 45.9   21.4V 468861    G96  C~1SlS      
2015 05  29.43177  16 09 40.48   +25 06 46.3   21.0V 468861    G96  C~1SlS      
2015 05  29.43631  16 09 40.41   +25 06 46.4   21.1V 468861    G96  C~1SlS      
2015 05  29.44086  16 09 40.35   +25 06 46.8   21.0V 468861    G96  C~1SlS      
2015 05  30.27032  16 09 27.36   +25 07 30.1   21.1V 468861    G96  C~1SlS      
2015 05  30.27497  16 09 27.26   +25 07 30.1   21.5V 468861    G96  C~1SlS      
2015 05  30.28429  16 09 27.10   +25 07 30.8   21.0V 468861    G96  C~1SlS      
2015 06  11.46372  16 06 17.994  +25 14 46.97  20.9r 468861    F51  C~1T2z      
2015 06  11.49097  16 06 17.580  +25 14 47.60  21.0r 468861    F51  C~1T2z      
2015 06  11.50461  16 06 17.393  +25 14 47.86  21.3r 468861    F51  C~1T2z      
2015 07  27.31732  15 56 53.039  +24 51 43.76  20.7i 468861    F51  C~1V2z      
2015 07  27.34566  15 56 52.816  +24 51 41.98  20.8i 468861    F51  C~1V2z      
2015 07  27.35996  15 56 52.687  +24 51 40.63  20.9i 468861    F51  C~1V2z      
2016 05  05.55824  16 03 25.035  +28 21 56.42  20.7w 468861    F51  C~1s30      
2016 05  05.57222  16 03 24.797  +28 21 58.00  20.8w 468861    F51  C~1s30      
2016 05  05.58618  16 03 24.554  +28 21 59.66  20.8w 468861    F51  C~1s30      
2016 05  05.60020  16 03 24.314  +28 22 01.23  21.0w 468861    F51  C~1s30      
2016 05  31.819444 15 55 44.481  +28 56 44.99  19.6R 468861    N50  C~1vUz      
2016 05  31.827734 15 55 44.330  +28 56 45.32  20.0R 468861    N50  C~1vUz      
2016 05  31.841944 15 55 44.082  +28 56 46.00  19.8R 468861    N50  C~1vUz      
2016 05  31.848444 15 55 43.967  +28 56 46.25  20.5R 468861    N50  C~1vUz      
2016 05  31.854964 15 55 43.848  +28 56 46.57  19.7R 468861    N50  C~1vUz      
2016 05  31.861484 15 55 43.726  +28 56 46.82  19.7R 468861    N50  C~1vUz      
2016 06  02.51490  15 55 14.649  +28 57 54.10  20.8w 468861    F51  C~1tfQ      
2016 06  02.52810  15 55 14.424  +28 57 54.51  20.9w 468861    F51  C~1tfQ      
2016 06  02.54134  15 55 14.191  +28 57 55.08  20.7w 468861    F51  C~1tfQ      
2016 06  02.55460  15 55 13.948  +28 57 55.57  20.8w 468861    F51  C~1tfQ      
2017 05  19.28269  15 43 21.87   +33 06 56.4         468861    U69  C~2MXh      
2017 05  19.28633  15 43 21.78   +33 06 57.0   20.4w 468861    U69  C~2MXh      
2017 05  26.31849  15 40 57.50   +33 14 49.3   20.4R 468861    G37  C~2Gsp      
2017 05  26.33840  15 40 57.129  +33 14 50.38  20.5w 468861    F51  C~2Gdd      
2017 05  26.34752  15 40 56.91   +33 14 50.9         468861    G37  C~2Gsp      
2017 05  26.35061  15 40 56.877  +33 14 51.13  20.5w 468861    F51  C~2Gdd      
2017 05  26.36284  15 40 56.622  +33 14 51.79  20.4w 468861    F51  C~2Gdd      
2017 05  26.37517  15 40 56.362  +33 14 52.49  20.5w 468861    F51  C~2Gdd      
2017 05  26.38230  15 40 56.19   +33 14 52.8         468861    G37  C~2Gsp      
2017 06  01.44825  15 38 53.011  +33 19 26.78  20.2i 468861    F51  C~2Gdd      
2017 06  01.45937  15 38 52.796  +33 19 27.15  20.3i 468861    F51  C~2Gdd      
2017 06  01.47045  15 38 52.563  +33 19 27.63  20.3i 468861    F51  C~2Gdd      

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    -0.85       0.00     1.43
  2   0.0000      0.00     0.09       0.00    -0.07
  3   0.0000      0.00    -0.26       0.00     0.03
  4   0.0001      0.00     0.60       0.00    -0.07
  5   0.0023      0.00     0.05       0.00     0.07
  6   0.0023      0.00     0.07       0.00     0.03
  7   0.0023      0.00     0.15       0.00     0.03
  8   0.0024      0.00     0.18       0.00     0.02
  9   0.0107      0.00    -0.48       0.00     0.19
 10   0.0107      0.00     0.13       0.00     0.12
 11   0.0108      0.00     0.01       0.00     0.20
 12   0.0108      0.00     0.02       0.00     0.33
 13   0.0108      0.00     0.46       0.00    -0.34
 14   0.0134      0.00     0.04       0.00     0.39
 15   0.0136      0.00     1.06       0.00    -0.16
 16   0.0154      0.00     0.01       0.00    -0.03
 17   0.0155      0.00     0.51       0.00    -0.34
 18   0.0161      0.00     0.83       0.00     0.25
 19   0.0161      0.00     0.35       0.00     0.44
 20   0.0161      0.00     0.03       0.00     0.12
 21   0.0187      0.00     0.31       0.00     0.02
 22   0.0188      0.00     0.31       0.00     0.17
 23   0.0188      0.00     0.14       0.00     0.11
 24   0.0189      0.00     0.59       0.00    -0.03
 25   0.0189      0.00     0.10       0.00     0.13
 26   0.0189      0.00     0.64       0.00     0.39
 27   0.0190      0.00     0.57       0.00    -0.05
 28   0.8352      0.00    -0.17       0.00    -1.57
 29   0.8353      0.00    -0.23       0.00    -1.78
 30   0.8353      0.00    -0.89       0.00    -1.79
 31   0.8354      0.00    -0.80       0.00    -1.80
 32   0.9800      0.00     0.12       0.00    -0.25
 33   0.9800      0.00     0.11       0.00     0.17
 34   0.9800      0.00     0.39       0.00    -0.11
 35   0.9800      0.00     0.08       0.00     0.21
 36   0.9802      0.00    -0.28       0.00     0.08
 37   0.9802      0.00     0.07       0.00     0.29
 38   0.9802      0.00    -0.19       0.00     0.20
 39   0.9830      0.00    -0.47       0.00    -0.19
 40   0.9830      0.00     0.08       0.00    -0.09
 41   0.9830      0.00     0.02       0.00     0.20
 42   0.9830      0.00     0.12       0.00     0.29
 43   0.9830      0.00     0.06       0.00    -0.02
 44   0.9854      0.00     0.20       0.00    -0.06
 45   0.9854      0.00     0.31       0.00    -0.17
 46   0.9854      0.00     0.27       0.00     0.03
 47   0.9854      0.00     0.37       0.00     0.32
 48   0.9854      0.00     0.48       0.00     0.11
 49   0.9965      0.00     0.65       0.00     0.01
 50   0.9965      0.00     0.09       0.00    -0.18
 51   0.9965      0.00    -0.03       0.00     0.02
 52   1.0270      0.00    -0.54       0.00    -0.18
 53   1.0271      0.00     0.18       0.00     0.12
 54   1.0271      0.00     0.03       0.00     0.11
 55   1.0537      0.00     0.15       0.00     0.39
 56   1.0538      0.00     0.23       0.00     0.32
 57   1.9684      0.00     0.18       0.00    -0.17
 58   1.9684      0.00     0.05       0.00    -0.15
 59   1.9685      0.00     0.22       0.00     0.07
 60   1.9685      0.00    -0.21       0.00    -0.41
 61   1.9707      0.00     0.55       0.00     0.39
 62   1.9708      0.00     0.50       0.00     0.50
 63   1.9708      0.00    -0.44       0.00     0.53
 64   1.9714      0.00     0.17       0.00    -0.14
 65   1.9714      0.00     0.04       0.00     0.03
 66   1.9714      0.00     0.07       0.00    -0.11
 67   1.9714      0.00     0.25       0.00     0.05
 68   1.9737      0.00     0.50       0.00     0.28
 69   1.9737      0.00     0.10       0.00     0.04
 70   1.9737      0.00    -0.07       0.00     0.26
 71   2.0071      0.00     0.17       0.00    -0.03
 72   2.0072      0.00     0.26       0.00     0.06
 73   2.0072      0.00     0.60       0.00     0.04
 74   2.1326      0.00     0.11       0.00     0.02
 75   2.1327      0.00     0.36       0.00     0.32
 76   2.1327      0.00     0.24       0.00     0.03
 77   2.9081      0.00     0.54       0.00    -0.09
 78   2.9081      0.00     0.55       0.00    -0.10
 79   2.9082      0.00     0.47       0.00    -0.03
 80   2.9082      0.00     0.44       0.00    -0.05
 81   2.9800      0.00     0.13       0.00    -0.10
 82   2.9800      0.00     0.08       0.00    -0.12
 83   2.9801      0.00     0.16       0.00    -0.04
 84   2.9801      0.00     0.17       0.00    -0.07
 85   2.9801      0.00     0.13       0.00    -0.02
 86   2.9801      0.00     0.04       0.00    -0.05
 87   2.9846      0.00     0.34       0.00     0.04
 88   2.9847      0.00     0.47       0.00    -0.04
 89   2.9847      0.00     0.50       0.00     0.04
 90   2.9847      0.00     0.37       0.00     0.04
 91   3.9450      0.00     0.44       0.00    -0.75
 92   3.9450      0.00     0.22       0.00    -0.44
 93   3.9642      0.00     0.08       0.00     0.15
 94   3.9643      0.00     0.23       0.00     0.01
 95   3.9643      0.00     0.23       0.00     0.16
 96   3.9643      0.00     0.24       0.00     0.08
 97   3.9644      0.00     0.22       0.00     0.05
 98   3.9644      0.00     0.15       0.00     0.07
 99   3.9644      0.00     0.21       0.00     0.16
100   3.9810      0.00     0.05       0.00    -0.08
101   3.9811      0.00     0.23       0.00    -0.09
102   3.9811      0.00     0.12       0.00     0.01

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.

468861    quality flag:3

Type:       CENTAURR  CENTAURR  CENTAURR

axisobj       182.276   182.262   182.291
ecceobj         0.952     0.952     0.952
incobj        125.448   125.448   125.448
qmin            8.002     8.212     8.120
qmax          362.902   355.724   367.900
amean         161.027   152.489   174.746
amin          139.617   140.115   158.880
amax          185.785   182.262   188.271
emean           0.946     0.943     0.950
emin            0.938     0.936     0.944
emax            0.954     0.953     0.955
imean         127.422   127.288   127.064
imin          125.301   125.752   125.371
imax          129.355   128.708   128.772
excite_mean     1.235     1.234     1.241
fracstop        0.040     0.013     0.022
cjmean         -0.723    -0.711    -0.735

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       150.3     152.4     152.2
kozaiamp          3.5       1.1       1.6