Orbit Fit and Astrometric record for 13GW141

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: 13GW141   
# Created Tue Dec  7 02:11:42 2021
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting     94 observations of     94
# Arc:   6.29y
# First observation: 2012/02/20
#  Last observation: 2018/06/07
# Chi-squared of fit:    67.29 DOF:    182 RMS:  0.15
# Min/Max residuals:    -0.45    0.76
# Exact a, adot, b, bdot, g, gdot:
  1.950649E-05  4.306630E-02 -1.124632E-05 -2.328023E-02  3.427108E-02 -2.479534E-02
# Covariance matrix:
  3.5909E-13 -1.5918E-13 -1.3957E-13  7.8991E-14 -2.3150E-14 -3.5824E-13
 -1.5918E-13  8.5855E-14  8.4259E-14 -4.7478E-14  2.2686E-14  2.1493E-13
 -1.3957E-13  8.4259E-14  2.3002E-13 -7.9332E-14  2.0442E-14  2.2936E-13
  7.8991E-14 -4.7478E-14 -7.9332E-14  3.5052E-14 -1.0402E-14 -1.2964E-13
 -2.3150E-14  2.2686E-14  2.0442E-14 -1.0402E-14  5.2240E-14  4.4986E-14
 -3.5824E-13  2.1493E-13  2.2936E-13 -1.2964E-13  4.4986E-14  5.8763E-13
#      lat0       lon0       xBary       yBary       zBary        JD0
   15.686839  178.602417    0.456070    0.237789   -0.846661  2455977.949186
# Heliocentric elements and errors
Epoch:              2455978.5000  =  2012/02/21
Mean Anomaly:          359.58655 +/-     0.000
Argument of Peri:      206.44476 +/-     0.002
Long of Asc Node:       23.41348 +/-     0.000
Inclination:            32.11079 +/-     0.000
Eccentricity:         0.95769554 +/-    0.0000
Semi-Major Axis:    556.39918355 +/-    0.4008
Time of Perihelion: 2461483.9929 +/-    5173.9
Perihelion:          23.53816474 +/-    0.0239
Aphelion:          1089.26020235 +/-    0.7848
Period (y)            13124.6560 +/-     14.18
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -28.94907609 +/-    0.0002
Ecliptic Y            1.16354343 +/-    0.0000
Ecliptic Z            7.88910722 +/-    0.0001
Ecliptic XDOT         0.00131521 +/-    0.0000
Ecliptic YDOT        -0.00346951 +/-    0.0000
Ecliptic ZDOT        -0.00232603 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   30.02767289 +/-    0.0002
Geocenter to KBO     29.17948449 +/-    0.0002
# Hcoef:  8.20

The following table shows the complete astrometric record for 13GW141. 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 (13GW141) followed by the observatory code and reference code for the source of the astrometry.

2012 02  20.44842  12 20 25.543  +14 54 58.87  22.4G 13GW141   F51  C~346E      
2012 02  20.46368  12 20 25.482  +14 54 59.62  23.0G 13GW141   F51  C~346E      
2012 02  20.47892  12 20 25.388  +14 55 00.39  22.5G 13GW141   F51  C~346E      
2013 03  03.54377  12 26 27.692  +12 44 18.11  22.8G 13GW141   F51  C~346E      
2013 03  08.51429  12 25 57.266  +12 47 07.46  22.1G 13GW141   F51  C~346E      
2013 04  06.33777  12 22 47.240  +13 00 07.87  22.7G 13GW141   F51  C~346E      
2013 04  06.35153  12 22 47.153  +13 00 08.19  22.5G 13GW141   F51  C~346E      
2014 05  19.32589  12 26 10.798  +10 37 06.80  22.0G 13GW141   F51  C~346E      
2014 05  19.33774  12 26 10.752  +10 37 06.50  21.9G 13GW141   F51  C~346E      
2014 05  19.34969  12 26 10.705  +10 37 06.26  22.6G 13GW141   F51  C~346E      
2014 05  19.36178  12 26 10.650  +10 37 06.09  22.9G 13GW141   F51  C~346E      
2014 05  29.32025  12 25 38.261  +10 33 42.10  22.8G 13GW141   F51  C~346E      
2014 05  29.34396  12 25 38.267  +10 33 41.71  22.7G 13GW141   F51  C~346E      
2014 05  29.35581  12 25 38.190  +10 33 40.95  22.2G 13GW141   F51  C~346E      
2014 12  29.61244  12 44 02.983  +07 23 38.96  22.3G 13GW141   F51  C~346E      
2014 12  29.62538  12 44 03.002  +07 23 38.96  23.2G 13GW141   F51  C~346E      
2014 12  29.63846  12 44 03.037  +07 23 39.01  22.6G 13GW141   F51  C~346E      
2014 12  29.65164  12 44 03.055  +07 23 38.96  22.8G 13GW141   F51  C~346E      
2015 01  19.58393  12 44 11.094  +07 26 07.10  22.0G 13GW141   F51  C~346E      
2015 01  19.59750  12 44 11.097  +07 26 07.28  22.7G 13GW141   F51  C~346E      
2015 01  19.61099  12 44 11.079  +07 26 07.13  22.0G 13GW141   F51  C~346E      
2015 01  19.62452  12 44 11.053  +07 26 07.40  22.0G 13GW141   F51  C~346E      
2015 02  19.51173  12 42 37.263  +07 38 32.40  22.9G 13GW141   F51  C~346E      
2015 02  19.52417  12 42 37.188  +07 38 32.57  22.4G 13GW141   F51  C~346E      
2015 02  19.53663  12 42 37.135  +07 38 32.93  22.7G 13GW141   F51  C~346E      
2015 02  19.54912  12 42 37.075  +07 38 33.26  23.0G 13GW141   F51  C~346E      
2015 03  24.42751  12 39 18.639  +07 55 33.68  21.7G 13GW141   F51  C~346E      
2015 05  21.26731  12 33 32.315  +08 05 17.56  22.4G 13GW141   F51  C~346E      
2015 05  21.28160  12 33 32.264  +08 05 17.33  22.0G 13GW141   F51  C~346E      
2015 05  21.29597  12 33 32.216  +08 05 17.01  22.4G 13GW141   F51  C~346E      
2015 05  21.31027  12 33 32.148  +08 05 16.87  22.2G 13GW141   F51  C~346E      
2016 02  02.57108  12 51 35.218  +04 50 57.06  22.2G 13GW141   F51  C~346E      
2016 02  29.54474  12 49 41.597  +05 02 13.73  22.5G 13GW141   F51  C~346E      
2016 03  07.43903  12 49 01.205  +05 05 38.86  22.2G 13GW141   F51  C~346E      
2016 03  07.45255  12 49 01.104  +05 05 39.29  23.0G 13GW141   F51  C~346E      
2016 03  07.46616  12 49 01.020  +05 05 39.83  22.2G 13GW141   F51  C~346E      
2016 03  07.47980  12 49 00.953  +05 05 40.13  22.3G 13GW141   F51  C~346E      
2016 03  14.49312  12 48 16.488  +05 09 10.17  23.1G 13GW141   F51  C~346E      
2016 03  14.50527  12 48 16.408  +05 09 11.03  22.2G 13GW141   F51  C~346E      
2016 03  14.51749  12 48 16.348  +05 09 11.35  22.3G 13GW141   F51  C~346E      
2016 03  14.52958  12 48 16.254  +05 09 11.54  22.0G 13GW141   F51  C~346E      
2016 04  03.40689  12 45 59.944  +05 18 22.19  22.0G 13GW141   F51  C~346E      
2016 04  03.41870  12 45 59.827  +05 18 22.22  22.2G 13GW141   F51  C~346E      
2016 04  03.43055  12 45 59.756  +05 18 22.44  22.4G 13GW141   F51  C~346E      
2016 04  29.42886  12 43 06.282  +05 25 46.79  22.2G 13GW141   F51  C~346E      
2017 03  05.51696  12 57 29.040  +02 15 03.15  21.9G 13GW141   F51  C~346E      
2017 03  05.54241  12 57 28.867  +02 15 04.12  22.3G 13GW141   F51  C~346E      
2017 03  05.55516  12 57 28.803  +02 15 04.28  22.6G 13GW141   F51  C~346E      
2017 03  20.34535  12 55 54.263  +02 21 55.95  22.2G 13GW141   F51  C~346E      
2017 03  20.35720  12 55 54.194  +02 21 56.35  22.9G 13GW141   F51  C~346E      
2017 03  20.36908  12 55 54.125  +02 21 56.45  22.2G 13GW141   F51  C~346E      
2017 03  20.38092  12 55 54.028  +02 21 56.82  22.8G 13GW141   F51  C~346E      
2017 03  20.38601  12 55 53.981  +02 21 56.83  23.2G 13GW141   F51  C~346E      
2017 03  20.40016  12 55 53.894  +02 21 57.49  22.4G 13GW141   F51  C~346E      
2017 03  20.41431  12 55 53.782  +02 21 57.83  22.2G 13GW141   F51  C~346E      
2017 03  20.42848  12 55 53.687  +02 21 58.30  22.3G 13GW141   F51  C~346E      
2017 03  29.40100  12 54 51.220  +02 26 03.11  22.0G 13GW141   F51  C~346E      
2017 03  29.41330  12 54 51.148  +02 26 03.44  22.2G 13GW141   F51  C~346E      
2017 03  29.42685  12 54 51.052  +02 26 03.80  22.5G 13GW141   F51  C~346E      
2017 03  29.43917  12 54 50.946  +02 26 04.37  22.3G 13GW141   F51  C~346E      
2017 04  03.46747  12 54 15.198  +02 28 13.76  22.0G 13GW141   F51  C~346E      
2017 04  03.48134  12 54 15.087  +02 28 14.01  22.5G 13GW141   F51  C~346E      
2017 04  03.49527  12 54 14.990  +02 28 14.39  22.0G 13GW141   F51  C~346E      
2017 04  03.50922  12 54 14.879  +02 28 14.80  21.8G 13GW141   F51  C~346E      
2017 04  16.31017  12 52 44.361  +02 33 02.25  22.5G 13GW141   F51  C~346E      
2017 04  16.31082  12 52 44.357  +02 33 02.32  22.6G 13GW141   F51  C~346E      
2017 04  16.32221  12 52 44.278  +02 33 02.57  22.3G 13GW141   F51  C~346E      
2017 04  16.32287  12 52 44.283  +02 33 02.51  21.8G 13GW141   F51  C~346E      
2017 04  16.33428  12 52 44.191  +02 33 02.68  22.1G 13GW141   F51  C~346E      
2017 04  16.33493  12 52 44.192  +02 33 02.92  22.6G 13GW141   F51  C~346E      
2017 04  16.34636  12 52 44.096  +02 33 02.99  22.3G 13GW141   F51  C~346E      
2017 04  16.34702  12 52 44.098  +02 33 03.01  21.9G 13GW141   F51  C~346E      
2017 04  20.37221  12 52 16.406  +02 34 17.22  22.0G 13GW141   F51  C~346E      
2017 04  20.38290  12 52 16.341  +02 34 17.31  22.6G 13GW141   F51  C~346E      
2017 04  20.39359  12 52 16.261  +02 34 17.51  22.1G 13GW141   F51  C~346E      
2017 04  20.40430  12 52 16.182  +02 34 17.63  22.3G 13GW141   F51  C~346E      
2017 04  27.31452  12 51 30.353  +02 36 02.94  21.7G 13GW141   F51  C~346E      
2017 04  27.32823  12 51 30.265  +02 36 03.14  22.1G 13GW141   F51  C~346E      
2017 04  27.34197  12 51 30.167  +02 36 03.12  22.2G 13GW141   F51  C~346E      
2017 04  27.35578  12 51 30.074  +02 36 03.37  22.6G 13GW141   F51  C~346E      
2018 03  17.44105  13 04 51.078  -00 37 17.09  22.3G 13GW141   F51  C~346E      
2018 03  17.45505  13 04 50.989  -00 37 16.68  21.9G 13GW141   F51  C~346E      
2018 03  17.46904  13 04 50.879  -00 37 16.65  22.1G 13GW141   F51  C~346E      
2018 03  17.48307  13 04 50.802  -00 37 16.11  22.2G 13GW141   F51  C~346E      
2018 04  13.35264  13 01 39.929  -00 26 02.31  22.1G 13GW141   F51  C~346E      
2018 04  13.36516  13 01 39.831  -00 26 01.85  21.5G 13GW141   F51  C~346E      
2018 04  13.37775  13 01 39.738  -00 26 01.82  22.1G 13GW141   F51  C~346E      
2018 04  13.39032  13 01 39.647  -00 26 01.47  22.1G 13GW141   F51  C~346E      
2018 06  06.27120  12 56 40.477  -00 20 25.95  23.1G 13GW141   F51  C~346E      
2018 06  06.28304  12 56 40.435  -00 20 25.67  22.5G 13GW141   F51  C~346E      
2018 06  06.29501  12 56 40.411  -00 20 25.92  22.2G 13GW141   F51  C~346E      
2018 06  06.30688  12 56 40.375  -00 20 26.44  22.6G 13GW141   F51  C~346E      
2018 06  07.28603  12 56 37.608  -00 20 40.79  22.4G 13GW141   F51  C~346E      
2018 06  07.29785  12 56 37.573  -00 20 40.92  22.4G 13GW141   F51  C~346E      

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     0.06
     2   0.0000      0.00     0.42       0.00     0.25
     3   0.0001      0.00     0.23       0.00     0.45
     4   1.0324      0.00    -0.02       0.00    -0.18
     5   1.0460      0.00    -0.19       0.00    -0.16
     6   1.1250      0.00    -0.14       0.00    -0.13
     7   1.1250      0.00    -0.06       0.00    -0.06
     8   2.2420      0.00    -0.02       0.00     0.08
     9   2.2420      0.00    -0.02       0.00    -0.03
    10   2.2420      0.00    -0.02       0.00    -0.08
    11   2.2421      0.00    -0.13       0.00    -0.06
    12   2.2693      0.00    -0.32       0.00     0.03
    13   2.2694      0.00     0.76       0.00     0.24
    14   2.2694      0.00     0.10       0.00    -0.22
    15   2.8560      0.00    -0.10       0.00    -0.03
    16   2.8561      0.00    -0.15       0.00    -0.01
    17   2.8561      0.00     0.04       0.00     0.06
    18   2.8561      0.00    -0.03       0.00     0.03
    19   2.9134      0.00    -0.32       0.00     0.14
    20   2.9135      0.00    -0.03       0.00     0.11
    21   2.9135      0.00    -0.06       0.00    -0.25
    22   2.9136      0.00    -0.21       0.00    -0.18
    23   2.9981      0.00    -0.05       0.00     0.09
    24   2.9982      0.00    -0.25       0.00    -0.12
    25   2.9982      0.00    -0.12       0.00    -0.14
    26   2.9982      0.00    -0.10       0.00    -0.19
    27   3.0882      0.00    -0.20       0.00    -0.13
    28   3.2466      0.00    -0.14       0.00     0.06
    29   3.2466      0.00    -0.05       0.00     0.03
    30   3.2467      0.00     0.10       0.00    -0.10
    31   3.2467      0.00    -0.06       0.00    -0.04
    32   3.9511      0.00    -0.13       0.00     0.07
    33   4.0249      0.00     0.12       0.00     0.08
    34   4.0438      0.00     0.07       0.00    -0.05
    35   4.0438      0.00    -0.18       0.00    -0.03
    36   4.0439      0.00    -0.17       0.00     0.10
    37   4.0439      0.00     0.11       0.00    -0.01
    38   4.0631      0.00    -0.05       0.00    -0.45
    39   4.0631      0.00    -0.04       0.00     0.05
    40   4.0632      0.00     0.28       0.00     0.01
    41   4.0632      0.00     0.08       0.00    -0.16
    42   4.1176      0.00     0.25       0.00     0.38
    43   4.1176      0.00    -0.24       0.00     0.12
    44   4.1177      0.00    -0.04       0.00     0.05
    45   4.1889      0.00    -0.06       0.00     0.21
    46   5.0378      0.00     0.23       0.00    -0.16
    47   5.0379      0.00    -0.06       0.00     0.12
    48   5.0379      0.00     0.13       0.00    -0.07
    49   5.0784      0.00    -0.04       0.00     0.03
    50   5.0785      0.00     0.15       0.00     0.10
    51   5.0785      0.00     0.34       0.00    -0.13
    52   5.0785      0.00     0.12       0.00    -0.09
    53   5.0785      0.00    -0.06       0.00    -0.23
    54   5.0786      0.00     0.10       0.00     0.04
    55   5.0786      0.00    -0.11       0.00    -0.02
    56   5.0787      0.00    -0.06       0.00     0.06
    57   5.1032      0.00    -0.09       0.00    -0.06
    58   5.1033      0.00     0.16       0.00    -0.06
    59   5.1033      0.00     0.19       0.00    -0.06
    60   5.1033      0.00    -0.07       0.00     0.19
    61   5.1171      0.00     0.12       0.00     0.02
    62   5.1171      0.00    -0.03       0.00    -0.07
    63   5.1172      0.00     0.03       0.00    -0.04
    64   5.1172      0.00    -0.12       0.00     0.02
    65   5.1523      0.00    -0.01       0.00    -0.03
    66   5.1523      0.00     0.00       0.00     0.03
    67   5.1523      0.00     0.02       0.00     0.05
    68   5.1523      0.00     0.17       0.00    -0.02
    69   5.1523      0.00    -0.00       0.00    -0.07
    70   5.1523      0.00     0.08       0.00     0.15
    71   5.1524      0.00    -0.15       0.00     0.00
    72   5.1524      0.00    -0.05       0.00     0.01
    73   5.1634      0.00    -0.14       0.00     0.05
    74   5.1634      0.00    -0.00       0.00    -0.04
    75   5.1634      0.00    -0.09       0.00    -0.03
    76   5.1635      0.00    -0.16       0.00    -0.09
    77   5.1824      0.00     0.10       0.00     0.26
    78   5.1824      0.00     0.13       0.00     0.28
    79   5.1825      0.00     0.02       0.00     0.09
    80   5.1825      0.00    -0.02       0.00     0.16
    81   6.0698      0.00     0.00       0.00     0.08
    82   6.0698      0.00     0.09       0.00     0.13
    83   6.0699      0.00    -0.13       0.00    -0.21
    84   6.0699      0.00     0.14       0.00    -0.03
    85   6.1435      0.00     0.04       0.00     0.01
    86   6.1435      0.00    -0.05       0.00     0.19
    87   6.1435      0.00    -0.06       0.00    -0.06
    88   6.1436      0.00    -0.04       0.00     0.01
    89   6.2911      0.00    -0.13       0.00    -0.23
    90   6.2911      0.00    -0.22       0.00     0.22
    91   6.2912      0.00    -0.04       0.00     0.14
    92   6.2912      0.00    -0.04       0.00    -0.20
    93   6.2939      0.00     0.02       0.00    -0.04
    94   6.2939      0.00     0.01       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.

13GW141    quality flag:3

Type:       CENTAURS  CENTAURS  CENTAURS

axisobj       539.252   539.163   539.341
ecceobj         0.956     0.956     0.956
incobj         32.126    32.126    32.126
qmin           20.197    20.218    20.044
qmax         1338.096  1300.635  1474.391
amean         498.054   512.511   529.404
amin          429.916   421.647   458.813
amax          680.816   662.170   749.003
emean           0.952     0.953     0.955
emin            0.942     0.939     0.944
emax            0.965     0.965     0.968
imean          32.440    32.455    32.362
imin           29.983    29.971    29.734
imax           34.846    34.730    34.656
excite_mean     1.093     1.094     1.095
fracstop        1.000     1.000     1.000
cjmean          2.156     2.155     2.153

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       210.0     210.1     210.0
kozaiamp          5.0       5.3       5.5