Orbit Fit and Astrometric record for 16GC241

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: 16GC241   
# Created Sat Nov 27 02:13:55 2021
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting    104 observations of    104
# Arc:   7.31y
# First observation: 2012/02/04
#  Last observation: 2019/05/27
# Chi-squared of fit:   155.58 DOF:    202 RMS:  0.22
# Min/Max residuals:    -1.02    0.71
# Exact a, adot, b, bdot, g, gdot:
  3.188933E-05  1.523401E-01 -1.327601E-06 -1.113868E-02  7.752460E-02 -1.384540E-04
# Covariance matrix:
  1.3102E-13 -4.9841E-14 -5.7159E-15  3.0216E-15 -7.2744E-15 -2.2735E-14
 -4.9841E-14  2.3927E-14  3.0861E-15 -1.6238E-15  7.4505E-15  1.2012E-14
 -5.7159E-15  3.0861E-15  5.9376E-14 -1.0840E-14  2.6789E-16  1.8343E-15
  3.0216E-15 -1.6238E-15 -1.0840E-14  2.4161E-15 -4.7938E-17 -9.7935E-16
 -7.2744E-15  7.4505E-15  2.6789E-16 -4.7938E-17  4.4097E-14 -2.1965E-15
 -2.2735E-14  1.2012E-14  1.8343E-15 -9.7935E-16 -2.1965E-15  7.6335E-15
#      lat0       lon0       xBary       yBary       zBary        JD0
    0.082301  150.002936    0.253700    0.001382   -0.953735  2455962.017836
# Heliocentric elements and errors
Epoch:              2455962.5000  =  2012/02/05
Mean Anomaly:          358.28954 +/-     0.000
Argument of Peri:      182.87635 +/-     0.000
Long of Asc Node:      329.99021 +/-     0.000
Inclination:             4.18210 +/-     0.000
Eccentricity:         0.36195104 +/-    0.0000
Semi-Major Axis:     21.69843258 +/-    0.0004
Time of Perihelion: 2456137.9089 +/-       1.0
Perihelion:          13.84466244 +/-    0.0003
Aphelion:            29.55220272 +/-    0.0006
Period (y)              101.0766 +/-      0.00
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -11.86755475 +/-    0.0000
Ecliptic Y            7.14666025 +/-    0.0000
Ecliptic Z            0.01850301 +/-    0.0000
Ecliptic XDOT        -0.00269059 +/-    0.0000
Ecliptic YDOT        -0.00465719 +/-    0.0000
Ecliptic ZDOT        -0.00039329 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   13.85330832 +/-    0.0000
Geocenter to KBO     12.89916829 +/-    0.0000
# Hcoef: 11.06

The following table shows the complete astrometric record for 16GC241. 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 (16GC241) followed by the observatory code and reference code for the source of the astrometry.

2012 02  04.51707  10 08 29.228  +11 32 52.76  22.4G 16GC241   F51  C~36rz      
2012 02  04.59549  10 08 28.327  +11 32 57.33  22.1G 16GC241   F51  C~36rz      
2012 02  04.60636  10 08 28.145  +11 32 58.62  21.1G 16GC241   F51  C~36rz      
2012 02  14.35983  10 06 29.893  +11 42 44.33  23.0G 16GC241   F51  C~36rz      
2012 02  14.37405  10 06 29.686  +11 42 45.28  22.0G 16GC241   F51  C~36rz      
2012 02  14.38821  10 06 29.500  +11 42 46.30  21.5G 16GC241   F51  C~36rz      
2013 02  15.46705  10 38 18.514  +07 58 57.21  22.6G 16GC241   F51  C~36rz      
2013 02  15.48072  10 38 18.362  +07 58 58.05  22.4G 16GC241   F51  C~36rz      
2013 02  15.49439  10 38 18.170  +07 58 59.02  22.1G 16GC241   F51  C~36rz      
2013 02  15.50804  10 38 18.020  +07 58 59.50  22.6G 16GC241   F51  C~36rz      
2013 04  03.31401  10 29 35.617  +08 45 46.00  22.6G 16GC241   F51  C~36rz      
2013 04  03.34413  10 29 35.368  +08 45 46.98  22.6G 16GC241   F51  C~36rz      
2013 04  03.35923  10 29 35.225  +08 45 48.04  22.5G 16GC241   F51  C~36rz      
2013 12  04.61154  11 13 47.079  +03 52 52.92  22.6G 16GC241   F51  C~36rz      
2013 12  04.61681  11 13 47.076  +03 52 52.77  22.4G 16GC241   F51  C~36rz      
2013 12  04.62207  11 13 47.118  +03 52 53.11  22.5G 16GC241   F51  C~36rz      
2013 12  04.62733  11 13 47.173  +03 52 51.98  23.1G 16GC241   F51  C~36rz      
2014 02  09.55271  11 10 43.462  +04 00 15.12  21.9G 16GC241   F51  C~36rz      
2014 02  09.56498  11 10 43.359  +04 00 15.73  22.4G 16GC241   F51  C~36rz      
2014 02  28.40054  11 07 13.607  +04 19 40.71  21.7G 16GC241   F51  C~36rz      
2014 02  28.41291  11 07 13.463  +04 19 41.61  21.7G 16GC241   F51  C~36rz      
2015 01  23.49324  11 42 59.078  -00 00 44.24  22.4G 16GC241   F51  C~36rz      
2015 01  23.50471  11 42 59.021  -00 00 44.08  22.5G 16GC241   F51  C~36rz      
2015 01  23.51617  11 42 58.952  -00 00 43.95  22.6G 16GC241   F51  C~36rz      
2015 01  23.52766  11 42 58.871  -00 00 43.46  22.2G 16GC241   F51  C~36rz      
2015 01  25.48471  11 42 48.404  -00 00 00.27  22.9G 16GC241   F51  C~36rz      
2015 01  25.49608  11 42 48.351  -00 00 00.21  22.6G 16GC241   F51  C~36rz      
2015 01  25.50743  11 42 48.264  +00 00 00.28  23.1G 16GC241   F51  C~36rz      
2015 01  25.51882  11 42 48.217  +00 00 00.52  22.3G 16GC241   F51  C~36rz      
2015 02  24.44737  11 38 33.334  +00 21 59.27  22.6G 16GC241   F51  C~36rz      
2015 02  24.46161  11 38 33.209  +00 21 59.86  22.0G 16GC241   F51  C~36rz      
2015 02  24.47591  11 38 33.044  +00 22 00.64  22.3G 16GC241   F51  C~36rz      
2015 02  24.49019  11 38 32.886  +00 22 01.42  22.2G 16GC241   F51  C~36rz      
2015 02  25.46795  11 38 22.300  +00 23 00.92  22.6G 16GC241   F51  C~36rz      
2015 02  25.48189  11 38 22.130  +00 23 02.53  21.9G 16GC241   F51  C~36rz      
2015 02  25.49586  11 38 21.989  +00 23 03.28  22.1G 16GC241   F51  C~36rz      
2015 02  25.50975  11 38 21.814  +00 23 03.70  22.3G 16GC241   F51  C~36rz      
2015 03  22.39990  11 33 35.273  +00 51 00.86  22.4G 16GC241   F51  C~36rz      
2015 03  22.41377  11 33 35.096  +00 51 01.86  22.1G 16GC241   F51  C~36rz      
2015 03  22.42761  11 33 34.949  +00 51 02.92  22.3G 16GC241   F51  C~36rz      
2015 03  22.44143  11 33 34.778  +00 51 03.95  22.0G 16GC241   F51  C~36rz      
2016 02  03.56714  12 10 51.731  -03 37 49.94  22.1G 16GC241   F51  C~36rz      
2016 02  03.57899  12 10 51.682  -03 37 49.58  21.8G 16GC241   F51  C~36rz      
2016 02  10.52137  12 10 05.989  -03 34 27.41  22.2G 16GC241   F51  C~36rz      
2016 02  10.53432  12 10 05.874  -03 34 26.66  22.5G 16GC241   F51  C~36rz      
2016 02  10.54728  12 10 05.762  -03 34 26.42  22.3G 16GC241   F51  C~36rz      
2016 02  10.56028  12 10 05.674  -03 34 25.45  22.0G 16GC241   F51  C~36rz      
2016 03  01.47875  12 07 05.782  -03 18 49.08  22.2G 16GC241   F51  C~36rz      
2016 03  01.49389  12 07 05.627  -03 18 48.64  22.6G 16GC241   F51  C~36rz      
2016 03  01.50915  12 07 05.451  -03 18 47.25  22.0G 16GC241   F51  C~36rz      
2016 03  01.52433  12 07 05.309  -03 18 46.85  22.6G 16GC241   F51  C~36rz      
2016 03  13.42598  12 04 54.500  -03 06 21.18  22.0G 16GC241   F51  C~36rz      
2016 03  13.44101  12 04 54.323  -03 06 20.21  22.7G 16GC241   F51  C~36rz      
2016 03  13.45608  12 04 54.175  -03 06 18.96  22.0w 16GC241   F51  C~1rSP      
2016 03  13.47111  12 04 53.974  -03 06 18.18  22.3w 16GC241   F51  C~1rSP      
2016 04  01.36168  12 01 17.495  -02 44 34.25  22.1w 16GC241   F51  C~1rSP      
2016 04  01.37399  12 01 17.346  -02 44 33.52  22.7w 16GC241   F51  C~1rSP      
2016 04  01.38631  12 01 17.214  -02 44 32.51  22.3w 16GC241   F51  C~1rSP      
2016 04  01.39863  12 01 17.057  -02 44 31.83  22.4w 16GC241   F51  C~1rSP      
2016 04  02.36867  12 01 06.226  -02 43 24.37  22.3G 16GC241   F51  C~36rz      
2016 04  02.38033  12 01 06.077  -02 43 24.06  22.9G 16GC241   F51  C~36rz      
2016 04  02.39202  12 01 05.963  -02 43 22.76  22.2w 16GC241   F51  C~1rSP      
2016 04  02.40370  12 01 05.818  -02 43 22.05  22.7G 16GC241   F51  C~36rz      
2016 04  10.35736  11 59 39.754  -02 34 21.50  22.3w 16GC241   F51  C~1rSP      
2016 04  10.37032  11 59 39.600  -02 34 20.78  22.5w 16GC241   F51  C~1rSP      
2016 04  10.38347  11 59 39.480  -02 34 19.54  22.2w 16GC241   F51  C~1rSP      
2016 04  10.47143  11 59 38.531  -02 34 14.00  22.7G 16GC241   F51  C~36rz      
2016 04  10.48474  11 59 38.360  -02 34 12.74  22.6G 16GC241   F51  C~36rz      
2017 02  21.52810  12 36 53.940  -06 59 20.09  22.6G 16GC241   F51  C~36rz      
2017 02  21.53979  12 36 53.854  -06 59 19.40  22.4G 16GC241   F51  C~36rz      
2017 02  21.55148  12 36 53.745  -06 59 18.96  22.5G 16GC241   F51  C~36rz      
2017 02  21.56315  12 36 53.642  -06 59 18.57  22.0G 16GC241   F51  C~36rz      
2017 03  19.37852  12 32 37.792  -06 36 39.47  22.3G 16GC241   F51  C~36rz      
2017 03  19.39060  12 32 37.655  -06 36 38.63  22.3G 16GC241   F51  C~36rz      
2017 03  19.40268  12 32 37.519  -06 36 37.82  22.4G 16GC241   F51  C~36rz      
2017 03  19.41477  12 32 37.384  -06 36 37.26  22.0G 16GC241   F51  C~36rz      
2017 04  20.31942  12 26 43.558  -06 00 46.92  23.3G 16GC241   F51  C~36rz      
2017 04  20.33179  12 26 43.428  -06 00 46.11  22.8G 16GC241   F51  C~36rz      
2017 04  20.35661  12 26 43.178  -06 00 44.76  23.7G 16GC241   F51  C~36rz      
2017 04  28.36946  12 25 26.430  -05 52 22.22  22.6G 16GC241   F51  C~36rz      
2017 04  28.45822  12 25 25.593  -05 52 16.54  22.7G 16GC241   F51  C~36rz      
2018 03  17.50737  13 00 51.108  -09 59 33.73  21.9G 16GC241   F51  C~36rz      
2018 03  17.51808  13 00 50.998  -09 59 33.10  22.0G 16GC241   F51  C~36rz      
2018 03  17.52876  13 00 50.868  -09 59 32.67  22.9G 16GC241   F51  C~36rz      
2018 03  17.53949  13 00 50.732  -09 59 31.26  21.6G 16GC241   F51  C~36rz      
2018 03  20.46168  13 00 19.968  -09 56 49.91  22.9G 16GC241   F51  C~36rz      
2019 04  03.45436  13 24 47.816  -12 47 03.15  22.7G 16GC241   F51  C~36rz      
2019 04  03.46618  13 24 47.687  -12 47 02.57  22.6G 16GC241   F51  C~36rz      
2019 04  03.47795  13 24 47.567  -12 47 01.60  22.9G 16GC241   F51  C~36rz      
2019 04  03.48974  13 24 47.428  -12 47 00.80  23.0G 16GC241   F51  C~36rz      
2019 04  06.44118  13 24 14.570  -12 44 07.10  23.0G 16GC241   F51  C~36rz      
2019 04  06.45346  13 24 14.401  -12 44 06.33  23.0G 16GC241   F51  C~36rz      
2019 04  06.46573  13 24 14.249  -12 44 05.49  23.0G 16GC241   F51  C~36rz      
2019 04  06.47801  13 24 14.133  -12 44 04.95  22.5G 16GC241   F51  C~36rz      
2019 04  09.43201  13 23 40.955  -12 41 05.72  23.3G 16GC241   F51  C~36rz      
2019 04  09.44430  13 23 40.810  -12 41 05.35  23.5G 16GC241   F51  C~36rz      
2019 04  09.45661  13 23 40.660  -12 41 04.60  22.6G 16GC241   F51  C~36rz      
2019 04  09.46889  13 23 40.522  -12 41 03.61  23.5G 16GC241   F51  C~36rz      
2019 04  25.36721  13 20 43.020  -12 24 19.88  22.7G 16GC241   F51  C~36rz      
2019 04  25.37922  13 20 42.889  -12 24 18.12  23.5G 16GC241   F51  C~36rz      
2019 05  27.28468  13 15 54.963  -11 53 39.37  22.9G 16GC241   F51  C~36rz      
2019 05  27.29741  13 15 54.846  -11 53 38.54  23.1G 16GC241   F51  C~36rz      
2019 05  27.31016  13 15 54.773  -11 53 37.79  22.5G 16GC241   F51  C~36rz      
2019 05  27.32287  13 15 54.672  -11 53 37.75  22.6G 16GC241   F51  C~36rz      

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    -0.23       0.00    -0.12
     2   0.0002      0.00     0.41       0.00    -0.11
     3   0.0002      0.00    -0.37       0.00     0.55
     4   0.0269      0.00     0.33       0.00    -0.15
     5   0.0270      0.00    -0.09       0.00    -0.08
     6   0.0270      0.00    -0.19       0.00     0.07
     7   1.0320      0.00     0.05       0.00     0.06
     8   1.0321      0.00     0.25       0.00     0.03
     9   1.0321      0.00    -0.15       0.00     0.14
    10   1.0321      0.00     0.08       0.00    -0.24
    11   1.1603      0.00     0.07       0.00     0.04
    12   1.1604      0.00     0.28       0.00    -0.33
    13   1.1604      0.00     0.10       0.00     0.05
    14   1.8319      0.00     0.07       0.00    -0.22
    15   1.8319      0.00    -0.42       0.00    -0.12
    16   1.8319      0.00    -0.25       0.00     0.48
    17   1.8319      0.00     0.13       0.00    -0.40
    18   2.0152      0.00    -0.44       0.00     0.04
    19   2.0152      0.00    -0.08       0.00    -0.02
    20   2.0668      0.00    -0.14       0.00    -0.00
    21   2.0668      0.00    -0.05       0.00     0.07
    22   2.9678      0.00     0.04       0.00    -0.07
    23   2.9678      0.00     0.11       0.00    -0.15
    24   2.9678      0.00    -0.00       0.00    -0.25
    25   2.9679      0.00    -0.29       0.00     0.00
    26   2.9732      0.00     0.04       0.00    -0.01
    27   2.9732      0.00     0.23       0.00    -0.22
    28   2.9733      0.00    -0.08       0.00     0.00
    29   2.9733      0.00     0.21       0.00    -0.03
    30   3.0553      0.00    -0.45       0.00     0.29
    31   3.0553      0.00     0.04       0.00     0.01
    32   3.0553      0.00    -0.07       0.00    -0.07
    33   3.0554      0.00    -0.07       0.00    -0.16
    34   3.0580      0.00     0.15       0.00    -0.37
    35   3.0581      0.00    -0.07       0.00     0.38
    36   3.0581      0.00     0.15       0.00     0.28
    37   3.0582      0.00    -0.15       0.00    -0.16
    38   3.1263      0.00    -0.01       0.00    -0.14
    39   3.1263      0.00    -0.21       0.00    -0.11
    40   3.1264      0.00     0.03       0.00    -0.01
    41   3.1264      0.00    -0.09       0.00     0.06
    42   3.9974      0.00    -0.14       0.00     0.17
    43   3.9974      0.00     0.21       0.00     0.25
    44   4.0164      0.00     0.14       0.00    -0.04
    45   4.0165      0.00    -0.12       0.00     0.27
    46   4.0165      0.00    -0.32       0.00     0.07
    47   4.0165      0.00    -0.17       0.00     0.59
    48   4.0711      0.00     0.08       0.00     0.28
    49   4.0711      0.00     0.19       0.00    -0.16
    50   4.0712      0.00     0.00       0.00     0.35
    51   4.0712      0.00     0.31       0.00    -0.14
    52   4.1038      0.00    -0.05       0.00    -0.11
    53   4.1038      0.00    -0.08       0.00    -0.14
    54   4.1039      0.00     0.33       0.00     0.11
    55   4.1039      0.00    -0.06       0.00    -0.11
    56   4.1556      0.00     0.21       0.00     0.06
    57   4.1557      0.00     0.09       0.00    -0.07
    58   4.1557      0.00     0.23       0.00     0.09
    59   4.1557      0.00    -0.01       0.00    -0.09
    60   4.1584      0.00     0.08       0.00     0.12
    61   4.1584      0.00    -0.16       0.00    -0.38
    62   4.1585      0.00     0.13       0.00     0.11
    63   4.1585      0.00    -0.04       0.00     0.01
    64   4.1803      0.00     0.18       0.00    -0.07
    65   4.1803      0.00    -0.05       0.00    -0.21
    66   4.1803      0.00     0.26       0.00     0.16
    67   4.1806      0.00     0.11       0.00    -0.13
    68   4.1806      0.00    -0.33       0.00     0.24
    69   5.0486      0.00     0.08       0.00    -0.21
    70   5.0487      0.00     0.25       0.00     0.03
    71   5.0487      0.00     0.08       0.00     0.02
    72   5.0487      0.00    -0.01       0.00    -0.04
    73   5.1194      0.00     0.04       0.00    -0.09
    74   5.1194      0.00     0.05       0.00    -0.02
    75   5.1195      0.00     0.07       0.00     0.02
    76   5.1195      0.00     0.12       0.00    -0.19
    77   5.2069      0.00    -0.03       0.00     0.12
    78   5.2069      0.00    -0.06       0.00     0.13
    79   5.2070      0.00     0.04       0.00    -0.13
    80   5.2289      0.00    -0.18       0.00     0.17
    81   5.2291      0.00    -0.44       0.00     0.52
    82   6.1136      0.00     0.18       0.00    -0.02
    83   6.1136      0.00     0.24       0.00     0.03
    84   6.1137      0.00    -0.01       0.00    -0.12
    85   6.1137      0.00    -0.34       0.00     0.71
    86   6.1217      0.00    -0.20       0.00    -0.09
    87   7.1593      0.00     0.07       0.00     0.04
    88   7.1593      0.00     0.14       0.00    -0.07
    89   7.1594      0.00     0.34       0.00     0.22
    90   7.1594      0.00     0.26       0.00     0.33
    91   7.1675      0.00     0.34       0.00    -0.14
    92   7.1675      0.00    -0.09       0.00    -0.10
    93   7.1676      0.00    -0.27       0.00     0.00
    94   7.1676      0.00     0.10       0.00    -0.19
    95   7.1757      0.00     0.06       0.00     0.19
    96   7.1757      0.00     0.01       0.00    -0.19
    97   7.1757      0.00    -0.11       0.00    -0.20
    98   7.1758      0.00    -0.06       0.00     0.04
    99   7.2193      0.00    -0.53       0.00    -1.02
   100   7.2193      0.00    -0.50       0.00    -0.03
   101   7.3067      0.00     0.25       0.00    -0.06
   102   7.3067      0.00    -0.21       0.00     0.18
   103   7.3068      0.00    -0.01       0.00     0.33
   104   7.3068      0.00    -0.23       0.00    -0.22

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.

16GC241    quality flag:3

Type:       CENTAURR  CENTAURR  CENTAURR

axisobj        21.768    21.768    21.768
ecceobj         0.361     0.361     0.361
incobj          4.180     4.180     4.180
qmin           13.763    13.764    13.763
qmax           29.621    29.621    29.621
amean          21.712    21.712    21.712
amin           21.657    21.657    21.656
amax           21.768    21.768    21.768
emean           0.363     0.363     0.363
emin            0.361     0.361     0.361
emax            0.364     0.364     0.364
imean           5.444     5.444     5.444
imin            5.436     5.436     5.436
imax            5.451     5.451     5.451
excite_mean     0.375     0.375     0.375
fracstop        0.000     0.000     0.000
cjmean          2.960     2.960     2.960

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       183.3     183.3     183.3
kozaiamp          1.0       1.0       1.0