Orbit Fit and Astrometric record for 16GR206

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: 16GR206   
# Created Sat Nov 17 02:10:15 2018
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting   83 observations of   83
# Arc:   8.13y
# First observation: 2010/02/24
#  Last observation: 2018/04/12
# Chi-squared of fit:    96.62 DOF:  160 RMS:  0.19
# Min/Max residuals:    -0.53    0.53
# Exact a, adot, b, bdot, g, gdot:
  2.314202E-05  8.435141E-02  3.157113E-06  1.227728E-02  5.648810E-02 -2.198629E-03
# Covariance matrix:
  3.7543E-13 -1.3949E-13  3.2352E-14 -1.6644E-14 -3.7178E-14 -1.3166E-13
 -1.3949E-13  6.3803E-14 -1.7292E-14  8.7224E-15  1.2538E-14  6.9615E-14
  3.2352E-14 -1.7292E-14  1.5847E-13 -2.9043E-14 -1.0926E-15 -2.0960E-14
 -1.6644E-14  8.7224E-15 -2.9043E-14  6.3707E-15  1.4607E-15  1.0410E-14
 -3.7178E-14  1.2538E-14 -1.0926E-15  1.4607E-15  3.9186E-14  8.3351E-15
 -1.3166E-13  6.9615E-14 -2.0960E-14  1.0410E-14  8.3351E-15  8.3681E-14
#      lat0       lon0       xBary       yBary       zBary        JD0
   12.339057  147.622837   -0.134647    0.210519   -0.962377  2455251.826026
# Heliocentric elements and errors
Epoch:              2455252.5000  =  2010/02/25
Mean Anomaly:          346.03068 +/-     0.003
Argument of Peri:       71.79178 +/-     0.004
Long of Asc Node:       93.40679 +/-     0.000
Inclination:            14.24286 +/-     0.000
Eccentricity:         0.07659681 +/-    0.0000
Semi-Major Axis:     20.15246717 +/-    0.0003
Time of Perihelion: 2456534.7226 +/-       0.8
Perihelion:          18.60885244 +/-    0.0004
Aphelion:            21.69608189 +/-    0.0004
Period (y)               90.4692 +/-      0.00
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -15.50582588 +/-    0.0001
Ecliptic Y            9.67156296 +/-    0.0000
Ecliptic Z            3.78308013 +/-    0.0000
Ecliptic XDOT        -0.00199148 +/-    0.0000
Ecliptic YDOT        -0.00357082 +/-    0.0000
Ecliptic ZDOT         0.00055848 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   18.66230893 +/-    0.0000
Geocenter to KBO     17.70289067 +/-    0.0001
# Hcoef:  9.28

The following table shows the complete astrometric record for 16GR206. 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 (16GR206) followed by the observatory code and reference code for the source of the astrometry.

2010 02  24.32526  10 17 40.600  +23 50 15.88  21.6G 16GR206   F51  C~2kSV      
2011 02  04.41348  10 41 34.629  +22 14 31.48  21.1G 16GR206   F51  C~2kSV      
2011 02  14.41646  10 39 59.802  +22 26 39.21  21.9G 16GR206   F51  C~2kSV      
2011 05  16.27761  10 29 47.672  +22 55 37.92  21.5G 16GR206   F51  C~2kSV      
2012 01  22.45549  11 03 20.904  +20 34 32.02  22.1w 16GR206   F51  C~1vaH      
2012 01  22.46962  11 03 20.818  +20 34 33.64  22.2w 16GR206   F51  C~1vaH      
2012 01  22.48366  11 03 20.727  +20 34 34.43  22.1w 16GR206   F51  C~1vaH      
2012 01  22.49769  11 03 20.642  +20 34 35.76  22.1w 16GR206   F51  C~1vaH      
2012 02  05.65054  11 01 34.446  +20 52 37.43  22.0G 16GR206   F51  C~2kSV      
2012 03  20.28826  10 54 32.546  +21 39 00.80  22.0G 16GR206   F51  C~2kSV      
2012 03  27.31272  10 53 28.183  +21 43 27.06  22.0G 16GR206   F51  C~2kSV      
2012 12  29.54716  11 24 09.180  +18 37 23.39  22.2G 16GR206   F51  C~2kSV      
2013 03  03.51887  11 17 19.527  +19 53 41.89  21.8G 16GR206   F51  C~2kSV      
2014 01  10.66747  11 42 42.433  +17 11 15.47  22.1G 16GR206   F51  C~2kSV      
2014 02  20.55172  11 38 40.283  +18 01 34.50  21.3i 16GR206   F51  C~1vaH      
2014 02  20.56524  11 38 40.136  +18 01 35.41  21.5i 16GR206   F51  C~1vaH      
2014 02  20.57885  11 38 40.021  +18 01 36.75  21.5i 16GR206   F51  C~1vaH      
2014 02  24.39533  11 38 05.761  +18 06 23.31  21.7w 16GR206   F51  C~1vaH      
2014 02  24.40785  11 38 05.656  +18 06 24.20  21.8w 16GR206   F51  C~1vaH      
2014 02  24.42037  11 38 05.535  +18 06 25.12  21.8w 16GR206   F51  C~1vaH      
2014 02  24.43293  11 38 05.425  +18 06 26.30  22.0w 16GR206   F51  C~1vaH      
2014 04  28.35832  11 28 53.995  +18 50 52.46  22.3G 16GR206   F51  C~2kSV      
2014 04  28.37119  11 28 53.913  +18 50 52.44  22.2G 16GR206   F51  C~2kSV      
2014 04  28.38401  11 28 53.839  +18 50 52.54  22.1G 16GR206   F51  C~2kSV      
2014 11  26.59757  11 58 36.447  +15 04 51.93  22.1w 16GR206   F51  C~1vaH      
2014 11  26.61010  11 58 36.546  +15 04 51.69  22.1w 16GR206   F51  C~1vaH      
2014 11  26.62262  11 58 36.637  +15 04 51.89  22.3w 16GR206   F51  C~1vaH      
2014 11  26.63516  11 58 36.746  +15 04 51.80  22.3w 16GR206   F51  C~1vaH      
2014 11  30.59294  11 59 06.908  +15 04 51.06  22.1w 16GR206   F51  C~1vaH      
2014 11  30.60484  11 59 06.995  +15 04 51.10  22.1w 16GR206   F51  C~1vaH      
2014 11  30.61677  11 59 07.076  +15 04 51.16  22.4w 16GR206   F51  C~1vaH      
2015 01  15.53822  12 01 07.614  +15 31 36.35  21.9r 16GR206   F51  C~1vaH      
2015 01  15.54941  12 01 07.593  +15 31 36.95  21.8r 16GR206   F51  C~1vaH      
2015 01  15.56061  12 01 07.558  +15 31 37.67  22.2r 16GR206   F51  C~1vaH      
2015 01  15.57188  12 01 07.531  +15 31 38.45  21.7r 16GR206   F51  C~1vaH      
2015 01  27.66822  12 00 26.409  +15 45 17.07  21.5G 16GR206   F51  C~2kSV      
2015 06  03.33201  11 45 54.635  +16 57 27.09  21.4G 16GR206   F51  C~2kSV      
2015 06  19.25994  11 46 19.809  +16 42 17.59  21.5G 16GR206   F51  C~2kSV      
2016 01  08.52674  12 19 23.680  +13 35 25.62  22.0G 16GR206   F51  C~2kSV      
2016 01  08.53788  12 19 23.678  +13 35 26.15  22.0G 16GR206   F51  C~2kSV      
2016 01  08.54883  12 19 23.682  +13 35 26.55  22.0G 16GR206   F51  C~2kSV      
2016 01  08.55979  12 19 23.681  +13 35 27.16  22.0G 16GR206   F51  C~2kSV      
2016 01  09.53764  12 19 23.923  +13 36 16.28  22.2G 16GR206   F51  C~2kSV      
2016 01  09.55092  12 19 23.928  +13 36 16.88  22.2G 16GR206   F51  C~2kSV      
2016 01  09.56420  12 19 23.922  +13 36 17.45  22.2G 16GR206   F51  C~2kSV      
2016 01  09.57742  12 19 23.915  +13 36 18.15  21.9G 16GR206   F51  C~2kSV      
2016 02  03.51413  12 18 23.348  +14 02 25.04  21.9G 16GR206   F51  C~2kSV      
2016 02  03.52530  12 18 23.280  +14 02 25.78  22.0G 16GR206   F51  C~2kSV      
2016 02  03.53697  12 18 23.203  +14 02 26.83  22.3G 16GR206   F51  C~2kSV      
2016 02  03.54822  12 18 23.167  +14 02 27.39  22.3G 16GR206   F51  C~2kSV      
2016 02  29.55151  12 15 24.478  +14 35 08.06  21.3G 16GR206   F51  C~2kSV      
2016 02  29.56363  12 15 24.379  +14 35 09.10  21.3G 16GR206   F51  C~2kSV      
2016 02  29.57552  12 15 24.274  +14 35 10.23  21.5G 16GR206   F51  C~2kSV      
2016 02  29.58735  12 15 24.165  +14 35 11.12  21.9G 16GR206   F51  C~2kSV      
2016 03  08.42885  12 14 14.616  +14 44 44.98  21.5G 16GR206   F51  C~2kSV      
2016 04  04.23563  12 09 59.14   +15 11 35.3   21.9V 16GR206   G96  C~1qqH      
2016 04  04.24709  12 09 59.07   +15 11 35.6   21.9V 16GR206   G96  C~1qqH      
2016 04  04.25854  12 09 58.93   +15 11 36.3   21.2V 16GR206   G96  C~1qqH      
2016 04  04.26999  12 09 58.85   +15 11 36.9   21.8V 16GR206   G96  C~1qqH      
2016 04  04.32779  12 09 58.28   +15 11 39.7   21.4V 16GR206   G96  C~1qqH      
2016 04  04.33186  12 09 58.21   +15 11 40.4   22.0V 16GR206   G96  C~1qqH      
2016 04  04.34000  12 09 58.15   +15 11 40.7   21.8V 16GR206   G96  C~1qqH      
2016 04  05.259771 12 09 49.53   +15 12 22.0   22.2V 16GR206   H01  C~1qqH      
2016 04  05.267804 12 09 49.46   +15 12 22.3   21.8V 16GR206   H01  C~1qqH      
2016 04  05.287519 12 09 49.28   +15 12 23.3   21.9V 16GR206   H01  C~1qqH      
2016 04  05.298877 12 09 49.17   +15 12 23.8   21.8V 16GR206   H01  C~1qqH      
2016 04  09.32594  12 09 12.11   +15 15 12.1   22.0R 16GR206   F51  C~1qqH      
2016 04  09.33834  12 09 12.00   +15 15 12.8   21.7R 16GR206   F51  C~1qqH      
2016 04  09.35087  12 09 11.92   +15 15 13.3   22.0R 16GR206   F51  C~1qqH      
2016 04  09.36351  12 09 11.79   +15 15 13.6   22.4R 16GR206   F51  C~1qqH      
2016 04  10.16457  12 09 04.54   +15 15 44.4   22.1V 16GR206   G96  C~1qqH      
2016 04  10.16958  12 09 04.48   +15 15 44.5   22.2V 16GR206   G96  C~1qqH      
2016 04  10.17460  12 09 04.47   +15 15 45.2   22.4V 16GR206   G96  C~1qqH      
2016 04  10.17961  12 09 04.43   +15 15 44.8   22.7V 16GR206   G96  C~1qqH      
2017 02  24.45018  12 34 24.216  +12 33 32.22  22.1G 16GR206   F51  C~2kSV      
2017 02  24.46269  12 34 24.123  +12 33 33.36  22.1G 16GR206   F51  C~2kSV      
2017 02  24.47524  12 34 24.009  +12 33 34.01  22.2G 16GR206   F51  C~2kSV      
2017 05  11.42132  12 23 34.032  +13 32 17.62  21.6G 16GR206   F51  C~2kSV      
2017 05  23.36206  12 22 34.976  +13 30 03.18  22.6G 16GR206   F51  C~2kSV      
2018 04  12.30162  12 45 35.414  +11 23 50.92  22.1G 16GR206   F51  C~2kSV      
2018 04  12.31249  12 45 35.322  +11 23 51.50  21.7G 16GR206   F51  C~2kSV      
2018 04  12.32340  12 45 35.203  +11 23 52.10  22.4G 16GR206   F51  C~2kSV      
2018 04  12.33431  12 45 35.138  +11 23 52.58  21.8G 16GR206   F51  C~2kSV      

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     0.02
  2   0.9448      0.00    -0.10       0.00    -0.15
  3   0.9722      0.00    -0.06       0.00    -0.26
  4   1.2210      0.00    -0.25       0.00     0.31
  5   1.9086      0.00    -0.05       0.00    -0.35
  6   1.9087      0.00     0.06       0.00     0.20
  7   1.9087      0.00     0.08       0.00    -0.08
  8   1.9088      0.00     0.20       0.00     0.19
  9   1.9475      0.00    -0.21       0.00     0.33
 10   2.0670      0.00     0.09       0.00    -0.05
 11   2.0862      0.00    -0.01       0.00     0.03
 12   2.8452      0.00    -0.08       0.00    -0.19
 13   3.0204      0.00    -0.17       0.00    -0.03
 14   3.8777      0.00     0.07       0.00    -0.07
 15   3.9897      0.00     0.41       0.00    -0.01
 16   3.9897      0.00     0.04       0.00    -0.12
 17   3.9897      0.00     0.15       0.00     0.19
 18   4.0002      0.00     0.12       0.00    -0.02
 19   4.0002      0.00     0.30       0.00    -0.06
 20   4.0003      0.00     0.23       0.00    -0.08
 21   4.0003      0.00     0.34       0.00     0.16
 22   4.1726      0.00    -0.03       0.00    -0.07
 23   4.1726      0.00    -0.11       0.00    -0.07
 24   4.1726      0.00    -0.08       0.00     0.05
 25   4.7537      0.00    -0.21       0.00     0.07
 26   4.7537      0.00    -0.20       0.00    -0.14
 27   4.7537      0.00    -0.31       0.00     0.09
 28   4.7538      0.00    -0.15       0.00     0.04
 29   4.7646      0.00     0.13       0.00    -0.04
 30   4.7646      0.00     0.16       0.00    -0.04
 31   4.7647      0.00     0.10       0.00    -0.02
 32   4.8904      0.00     0.01       0.00     0.17
 33   4.8904      0.00     0.09       0.00     0.07
 34   4.8904      0.00    -0.03       0.00     0.08
 35   4.8905      0.00    -0.04       0.00     0.15
 36   4.9236      0.00    -0.16       0.00    -0.12
 37   5.2704      0.00    -0.17       0.00    -0.25
 38   5.3140      0.00    -0.17       0.00     0.07
 39   5.8705      0.00    -0.10       0.00     0.09
 40   5.8705      0.00    -0.16       0.00     0.06
 41   5.8706      0.00    -0.13       0.00    -0.09
 42   5.8706      0.00    -0.18       0.00    -0.02
 43   5.8733      0.00    -0.01       0.00     0.03
 44   5.8733      0.00     0.07       0.00    -0.05
 45   5.8733      0.00    -0.01       0.00    -0.16
 46   5.8734      0.00    -0.11       0.00    -0.13
 47   5.9417      0.00     0.05       0.00     0.08
 48   5.9417      0.00    -0.13       0.00     0.01
 49   5.9417      0.00    -0.40       0.00     0.21
 50   5.9417      0.00    -0.09       0.00    -0.04
 51   6.0129      0.00    -0.08       0.00    -0.21
 52   6.0130      0.00     0.02       0.00    -0.07
 53   6.0130      0.00    -0.00       0.00     0.17
 54   6.0130      0.00    -0.09       0.00     0.18
 55   6.0345      0.00     0.17       0.00    -0.39
 56   6.1079      0.00    -0.06       0.00    -0.30
 57   6.1079      0.00     0.53       0.00    -0.53
 58   6.1080      0.00     0.08       0.00    -0.35
 59   6.1080      0.00     0.52       0.00    -0.28
 60   6.1082      0.00     0.25       0.00    -0.12
 61   6.1082      0.00    -0.21       0.00     0.40
 62   6.1082      0.00     0.05       0.00     0.33
 63   6.1107      0.00    -0.40       0.00     0.15
 64   6.1107      0.00    -0.31       0.00     0.09
 65   6.1108      0.00    -0.20       0.00     0.21
 66   6.1108      0.00    -0.23       0.00     0.21
 67   6.1218      0.00    -0.25       0.00    -0.01
 68   6.1219      0.00    -0.18       0.00     0.20
 69   6.1219      0.00     0.36       0.00     0.21
 70   6.1219      0.00     0.17       0.00     0.01
 71   6.1241      0.00    -0.07       0.00     0.07
 72   6.1241      0.00    -0.28       0.00    -0.02
 73   6.1242      0.00     0.26       0.00     0.48
 74   6.1242      0.00     0.35       0.00    -0.11
 75   7.0010      0.00     0.01       0.00    -0.13
 76   7.0011      0.00     0.04       0.00     0.07
 77   7.0011      0.00    -0.23       0.00    -0.23
 78   7.2090      0.00    -0.20       0.00     0.09
 79   7.2417      0.00     0.19       0.00     0.23
 80   8.1286      0.00    -0.08       0.00    -0.15
 81   8.1286      0.00     0.09       0.00    -0.06
 82   8.1287      0.00    -0.13       0.00     0.04
 83   8.1287      0.00     0.45       0.00     0.02

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.

16GR206    quality flag:3

Type:       CENTAURR  CENTAURR  CENTAURR

axisobj        20.265    20.265    20.265
ecceobj         0.079     0.079     0.079
incobj         14.224    14.224    14.224
qmin           18.520    18.520    18.520
qmax           21.995    22.313    22.097
amean          20.152    20.223    20.226
amin           19.988    19.988    19.988
amax           20.295    20.538    20.441
emean           0.077     0.079     0.078
emin            0.068     0.068     0.068
emax            0.084     0.086     0.085
imean          12.688    12.676    12.675
imin           12.677    12.625    12.639
imax           12.699    12.699    12.699
excite_mean     0.233     0.233     0.233
fracstop        0.000     0.001     0.001
cjmean          3.085     3.082     3.081

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        67.7      66.6      64.9
kozaiamp          6.0       6.4       7.0