Orbit Fit and Astrometric record for 538495

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: 538495    
# Created Fri Dec  3 02:08:06 2021
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting    110 observations of    111
# Arc:   7.37y
# First observation: 2011/11/24
#  Last observation: 2019/04/09
# Chi-squared of fit:   199.98 DOF:    214 RMS:  0.24
# Min/Max residuals:    -0.72    1.03
# Exact a, adot, b, bdot, g, gdot:
  3.476325E-05  2.541163E-01  1.083260E-05  8.000533E-02  1.156942E-01 -6.972921E-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
   11.633320   91.987948    0.495431    0.171644   -0.833603  2455889.959096
# Heliocentric elements and errors
Epoch:              2455890.5000  =  2011/11/25
Mean Anomaly:          338.22696 +/-     0.000
Argument of Peri:       90.39701 +/-     0.000
Long of Asc Node:       59.48683 +/-     0.000
Inclination:            20.80927 +/-     0.000
Eccentricity:         0.46158970 +/-    0.0000
Semi-Major Axis:     14.90770815 +/-    0.0000
Time of Perihelion: 2457162.0439 +/-       0.0
Perihelion:           8.02646359 +/-    0.0000
Aphelion:            21.78895271 +/-    0.0000
Period (y)               57.5605 +/-      0.00
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X            0.17502906 +/-    0.0000
Ecliptic Y            9.32971514 +/-    0.0000
Ecliptic Z            1.74300108 +/-    0.0000
Ecliptic XDOT        -0.00594454 +/-    0.0000
Ecliptic YDOT        -0.00220047 +/-    0.0000
Ecliptic ZDOT         0.00152173 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO    9.49284638 +/-    0.0000
Geocenter to KBO      8.64358944 +/-    0.0000
# Hcoef: 11.97

The following table shows the complete astrometric record for 538495. 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 (538495) followed by the observatory code and reference code for the source of the astrometry.

2011 11  24.45833  06 09 30.918  +35 03 22.31  21.7G 538495    F51  C~2jiM      
2011 11  24.47239  06 09 30.659  +35 03 23.60  21.7G 538495    F51  C~2jiM      
2011 11  24.48648  06 09 30.405  +35 03 24.89  21.6G 538495    F51  C~2jiM      
2011 11  24.50057  06 09 30.158  +35 03 26.18  21.8G 538495    F51  C~2jiM      
2012 01  03.34012  05 55 08.950  +35 43 16.81  21.5G 538495    F51  C~2jiM      
2012 01  03.35305  05 55 08.666  +35 43 17.30  21.5G 538495    F51  C~2jiM      
2012 10  18.62271  07 29 52.771  +36 40 17.27  21.4G 538495    F51  C~2jiM      
2012 10  18.63491  07 29 52.887  +36 40 18.59  21.9G 538495    F51  C~2jiM      
2012 10  31.55667  07 31 16.937  +37 08 18.11  21.6G 538495    F51  C~2jiM      
2012 10  31.56905  07 31 16.972  +37 08 19.53  21.9G 538495    F51  C~2jiM      
2012 11  28.50571  07 29 00.947  +38 16 05.88  21.3G 538495    F51  C~2jiM      
2012 11  28.51903  07 29 00.766  +38 16 07.75  21.8G 538495    F51  C~2jiM      
2014 12  27.47943  10 36 22.168  +33 00 16.78  20.4G 538495    F51  C~2jiM      
2014 12  27.49174  10 36 22.097  +33 00 19.04  21.1G 538495    F51  C~2jiM      
2014 12  27.50401  10 36 22.055  +33 00 21.27  20.8G 538495    F51  C~2jiM      
2015 01  11.66920  10 34 47.843  +33 45 54.90  20.7G 538495    F51  C~2jiM      
2015 01  12.66743  10 34 37.456  +33 48 58.73  21.2G 538495    F51  C~2jiM      
2015 01  13.67518  10 34 26.402  +33 52 04.15  21.4G 538495    F51  C~2jiM      
2015 02  27.30402  10 20 28.74   +35 38 54.7   20.2V 538495    G96  C~29Em      
2015 02  27.31136  10 20 28.55   +35 38 54.7   20.5V 538495    G96  C~29Em      
2015 02  27.31870  10 20 28.39   +35 38 55.6   20.6V 538495    G96  C~29Em      
2015 02  27.32603  10 20 28.22   +35 38 56.2   21.0V 538495    G96  C~29Em      
2015 03  24.35219  10 12 14.087  +35 45 35.45  21.0G 538495    F51  C~2jiM      
2015 04  07.33110  10 09 11.750  +35 29 07.75  20.9G 538495    F51  C~2jiM      
2015 04  09.36654  10 08 52.776  +35 25 37.66  21.3G 538495    F51  C~2jiM      
2015 04  09.37769  10 08 52.688  +35 25 36.24  21.3G 538495    F51  C~2jiM      
2015 04  09.38876  10 08 52.584  +35 25 35.12  21.9G 538495    F51  C~2jiM      
2015 04  21.35075  10 07 44.592  +34 59 51.81  21.0G 538495    F51  C~2jiM      
2015 04  21.36287  10 07 44.556  +34 59 50.11  21.0G 538495    F51  C~2jiM      
2016 01  03.53061  11 57 56.936  +23 40 15.38  20.8G 538495    F51  C~2jiM      
2016 01  03.54291  11 57 56.997  +23 40 17.00  21.2G 538495    F51  C~2jiM      
2016 01  03.55547  11 57 57.061  +23 40 18.46  20.8G 538495    F51  C~2jiM      
2016 02  03.47120  11 56 23.150  +24 55 08.40  21.1w 538495    F51  C~29Em      
2016 02  03.48419  11 56 22.996  +24 55 10.42  21.2w 538495    F51  C~29Em      
2016 02  03.49737  11 56 22.868  +24 55 12.65  21.1w 538495    F51  C~29Em      
2016 02  10.43219  11 54 59.242  +25 13 41.73  21.0w 538495    F51  C~29Em      
2016 02  10.44376  11 54 59.073  +25 13 43.53  21.0w 538495    F51  C~29Em      
2016 02  10.45535  11 54 58.926  +25 13 45.29  21.1w 538495    F51  C~29Em      
2016 02  10.46700  11 54 58.760  +25 13 47.32  21.1w 538495    F51  C~29Em      
2016 02  11.46504  11 54 44.972  +25 16 23.38  20.8G 538495    F51  C~2jiM      
2016 02  13.43349  11 54 17.044  +25 21 32.91  21.0G 538495    F51  C~2jiM      
2016 02  13.44588  11 54 16.867  +25 21 34.65  21.4G 538495    F51  C~2jiM      
2016 03  13.50686  11 45 21.195  +26 22 37.10  20.9w 538495    F51  C~1oeJ      
2016 03  13.51800  11 45 20.970  +26 22 37.98  21.0w 538495    F51  C~1oeJ      
2016 03  13.52918  11 45 20.731  +26 22 38.96  20.8w 538495    F51  C~1oeJ      
2016 03  16.32495  11 44 23.16   +26 26 17.9   20.8R 538495    926  C~1oeJ      
2016 03  16.34926  11 44 22.70   +26 26 19.4   20.9R 538495    926  C~1oeJ      
2016 03  16.36708  11 44 22.31   +26 26 21.0   20.5R 538495    926  C~1oeJ      
2016 03  17.02029  11 44 08.89   +26 27 06.8   21.3V 538495    033  C~1oeJ      
2016 03  17.02300  11 44 08.82   +26 27 06.9   21.2V 538495    033  C~1oeJ      
2016 03  17.02572  11 44 08.81   +26 27 07.2   20.9V 538495    033  C~1oeJ      
2016 03  17.02843  11 44 08.69   +26 27 07.5   21.6V 538495    033  C~1oeJ      
2016 03  17.03115  11 44 08.61   +26 27 07.9   20.8V 538495    033  C~1oeJ      
2016 03  17.03385  11 44 08.59   +26 27 08.0   21.1V 538495    033  C~1oeJ      
2016 03  17.11130  11 44 06.92   +26 27 12.9   21.9V 538495    033  C~1oeJ      
2016 03  17.11436  11 44 06.88   +26 27 13.0   21.7V 538495    033  C~1oeJ      
2016 03  17.11743  11 44 06.82   +26 27 13.3   21.8V 538495    033  C~1oeJ      
2016 03  17.12049  11 44 06.76   +26 27 13.3   21.9V 538495    033  C~1oeJ      
2016 03  17.12355  11 44 06.72   +26 27 13.5   21.6V 538495    033  C~1oeJ      
2016 03  17.12661  11 44 06.64   +26 27 13.9   21.9V 538495    033  C~1oeJ      
2016 03  17.14543  11 44 06.24   +26 27 15.2   21.5V 538495    033  C~1oeJ      
2016 03  17.14848  11 44 06.17   +26 27 15.6   21.4V 538495    033  C~1oeJ      
2016 03  17.15155  11 44 06.09   +26 27 15.7   21.6V 538495    033  C~1oeJ      
2016 03  17.26135  11 44 03.95   +26 27 24.2   20.5R 538495    926  C~1oeJ      
2016 03  17.27748  11 44 03.61   +26 27 25.8   20.4R 538495    926  C~1oeJ      
2016 03  17.29358  11 44 03.27   +26 27 26.7   20.4R 538495    926  C~1oeJ      
2016 04  02.12677  11 38 49.11   +26 37 07.2   20.9R 538495    H36  C~1qBJ      
2016 04  02.17226  11 38 48.33   +26 37 07.9   20.6R 538495    H36  C~1qBJ      
2016 04  03.17149  11 38 29.86   +26 37 09.0   21.1R 538495    H36  C~1qBJ      
2016 04  03.20558  11 38 29.18   +26 37 08.8   20.1R 538495    H36  C~1qBJ      
2016 04  03.24467  11 38 28.44   +26 37 08.8   20.8R 538495    H36  C~1qBJ      
2016 04  24.41197  11 33 06.966  +26 20 08.92  21.1G 538495    F51  C~2jiN      
2016 04  24.42470  11 33 06.803  +26 20 07.41  21.5G 538495    F51  C~2jiN      
2016 04  29.20004  11 32 17.20   +26 11 57.1   21.1V 538495    G96  C~1reS      
2016 04  29.20612  11 32 17.13   +26 11 56.4   21.2V 538495    G96  C~1reS      
2016 04  29.21219  11 32 17.06   +26 11 55.6   20.9V 538495    G96  C~1reS      
2016 04  29.21825  11 32 17.02   +26 11 54.5   21.6V 538495    G96  C~1reS      
2016 04  30.35806  11 32 06.556  +26 09 45.12  21.1G 538495    F51  C~2jiN      
2016 04  30.36921  11 32 06.451  +26 09 43.72  21.1G 538495    F51  C~2jiN      
2016 04  30.38154  11 32 06.326  +26 09 42.26  21.2G 538495    F51  C~2jiN      
2016 04  30.39274  11 32 06.214  +26 09 41.05  21.2G 538495    F51  C~2jiN      
2016 05  03.36011  11 31 41.830  +26 03 37.86  21.1G 538495    F51  C~2jiN      
2016 05  03.37169  11 31 41.731  +26 03 36.29  21.2G 538495    F51  C~2jiN      
2017 02  02.54592  13 04 22.129  +13 30 41.53  21.6G 538495    F51  C~2jiN      
2017 02  02.55758  13 04 22.087  +13 30 42.83  21.3G 538495    F51  C~2jiN      
2017 02  02.56925  13 04 22.048  +13 30 43.96  21.4G 538495    F51  C~2jiN      
2017 02  02.58092  13 04 22.005  +13 30 45.16  21.8G 538495    F51  C~2jiN      
2017 02  09.50563  13 03 51.482  +13 43 26.90  21.6G 538495    F51  C~2jiN      
2017 02  21.51220  13 02 08.83   +14 07 23.5   20.4R 538495    695  C~29Em      
2017 02  21.52685  13 02 08.68   +14 07 25.3         538495    695  C~29Em      
2017 02  24.45469  13 01 34.893  +14 13 25.81  21.3w 538495    F51  C~29Em      
2017 02  24.46719  13 01 34.725  +14 13 27.42  21.6w 538495    F51  C~29Em      
2017 02  24.56296  13 01 33.551  +14 13 39.09  21.3w 538495    F51  C~29Em      
2017 02  24.57560  13 01 33.389  +14 13 40.73  21.1w 538495    F51  C~29Em      
2017 02  25.35804  13 01 23.78   +14 15 15.9   20.4R 538495    H36  C~29Em      
2017 02  25.38114  13 01 23.45   +14 15 19.1   20.5R 538495    H36  C~29Em      
2017 03  22.39130  12 54 41.267  +15 01 57.92  21.2G 538495    F51  C~2jiN      
2017 03  22.40201  12 54 41.053  +15 01 58.64  20.9G 538495    F51  C~2jiN      
2017 03  30.37834  12 52 08.630  +15 12 55.98  21.1G 538495    F51  C~2jiN      
2017 03  30.40356  12 52 08.130  +15 12 57.73  21.4G 538495    F51  C~2jiN      
2018 03  11.52594  13 55 00.405  +03 35 22.03  21.9G 538495    F51  C~2jiN      
2019 04  03.50556  14 37 36.909  -05 33 38.35  21.9w 538495    F51  C~326N      
2019 04  03.51726  14 37 36.721  -05 33 37.97  22.2w 538495    F51  C~326N      
2019 04  03.54063  14 37 36.352  -05 33 36.61  21.9w 538495    F51  C~326N      
2019 04  08.48603  14 36 19.896  -05 29 12.90  22.2w 538495    F51  C~332z      
2019 04  08.49860  14 36 19.700  -05 29 12.45  21.7w 538495    F51  C~332z      
2019 04  08.51117  14 36 19.481  -05 29 11.64  21.8w 538495    F51  C~332z      
2019 04  08.52379  14 36 19.266  -05 29 10.97  21.8w 538495    F51  C~332z      
2019 04  09.48386  14 36 03.854  -05 28 20.53  21.9w 538495    F51  C~332z      
2019 04  09.49651  14 36 03.634  -05 28 19.36  21.8w 538495    F51  C~332z      
2019 04  09.52187  14 36 03.237  -05 28 18.17  21.8w 538495    F51  C~332z      

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    -0.01       0.00     0.02
     2   0.0000      0.00    -0.08       0.00     0.02
     3   0.0001      0.00    -0.07       0.00     0.03
     4   0.0001      0.00     0.05       0.00     0.04
     5   0.1092      0.00    -0.03       0.00     0.02
     6   0.1092      0.00     0.12       0.00     0.17
     7   0.9012      0.00    -0.06       0.00     0.04
     8   0.9012      0.00    -0.06       0.00    -0.14
     9   0.9366      0.00    -0.08       0.00     0.07
    10   0.9366      0.00    -0.01       0.00    -0.23
    11   1.0131      0.00    -0.13       0.00     0.07
    12   1.0132      0.00    -0.26       0.00    -0.04
    13   3.0911      0.00     0.61       0.00    -0.09
    14   3.0911      0.00    -0.00       0.00     0.01
    15   3.0912      0.00    -0.17       0.00     0.09
    16   3.1327      0.00    -0.52       0.00     0.05
    17   3.1354      0.00     0.09       0.00    -0.01
    18   3.1382      0.00    -0.20       0.00    -0.13
    19   3.2604      0.00     0.47       0.00     0.08
    20   3.2604      0.00     0.11       0.00    -0.44
    21   3.2604      0.00     0.20       0.00    -0.07
    22   3.2604      0.00     0.14       0.00     0.01
    23   3.3289      0.00     0.15       0.00     0.14
    24   3.3672      0.00     0.14       0.00     0.06
    25   3.3728      0.00    -0.22       0.00     0.14
    26   3.3728      0.00     0.02       0.00    -0.07
    27   3.3728      0.00     0.00       0.00     0.02
    28   3.4056      0.00     0.07       0.00    -0.16
    29   3.4056      0.00     0.07       0.00    -0.03
    30   4.1097      0.00    -0.14       0.00    -0.14
    31   4.1097      0.00    -0.06       0.00     0.03
    32   4.1098      0.00     0.06       0.00     0.01
    33   4.1944      0.00     0.06       0.00     0.14
    34   4.1945      0.00    -0.10       0.00     0.05
    35   4.1945      0.00     0.16       0.00     0.15
    36   4.2135      0.00    -0.22       0.00     0.09
    37   4.2135      0.00    -0.34       0.00     0.03
    38   4.2135      0.00    -0.13       0.00    -0.06
    39   4.2136      0.00    -0.18       0.00     0.11
    40   4.2163      0.00 (  -1.99)      0.00 (  -1.37)
    41   4.2217      0.00    -0.12       0.00     0.08
    42   4.2217      0.00     0.02       0.00    -0.12
    43   4.3013      0.00    -0.14       0.00     0.15
    44   4.3013      0.00     0.01       0.00     0.11
    45   4.3014      0.00    -0.04       0.00     0.18
    46   4.3090      0.00    -0.32       0.00     0.47
    47   4.3091      0.00     0.46       0.00     0.21
    48   4.3091      0.00     0.24       0.00     0.53
    49   4.3109      0.00     0.53       0.00    -0.00
    50   4.3109      0.00     0.33       0.00    -0.09
    51   4.3109      0.00     1.03       0.00     0.02
    52   4.3109      0.00     0.08       0.00     0.13
    53   4.3109      0.00    -0.26       0.00     0.34
    54   4.3110      0.00     0.28       0.00     0.25
    55   4.3112      0.00    -0.53       0.00    -0.17
    56   4.3112      0.00    -0.17       0.00    -0.28
    57   4.3112      0.00    -0.11       0.00    -0.19
    58   4.3112      0.00    -0.06       0.00    -0.40
    59   4.3112      0.00     0.29       0.00    -0.41
    60   4.3112      0.00     0.05       0.00    -0.22
    61   4.3113      0.00    -0.09       0.00    -0.20
    62   4.3113      0.00    -0.19       0.00    -0.00
    63   4.3113      0.00    -0.44       0.00    -0.11
    64   4.3116      0.00     0.21       0.00     0.18
    65   4.3116      0.00     0.20       0.00     0.65
    66   4.3117      0.00     0.19       0.00     0.43
    67   4.3550      0.00    -0.72       0.00    -0.38
    68   4.3551      0.00     0.55       0.00     0.13
    69   4.3579      0.00     0.70       0.00     0.64
    70   4.3580      0.00     0.12       0.00     0.48
    71   4.3581      0.00     0.05       0.00     0.56
    72   4.4160      0.00     0.11       0.00     0.10
    73   4.4161      0.00    -0.08       0.00    -0.20
    74   4.4291      0.00     0.34       0.00    -0.12
    75   4.4292      0.00     0.19       0.00    -0.13
    76   4.4292      0.00     0.03       0.00    -0.25
    77   4.4292      0.00     0.33       0.00    -0.67
    78   4.4323      0.00    -0.16       0.00     0.09
    79   4.4323      0.00    -0.17       0.00     0.00
    80   4.4324      0.00    -0.31       0.00    -0.00
    81   4.4324      0.00    -0.43       0.00     0.11
    82   4.4405      0.00     0.01       0.00     0.01
    83   4.4406      0.00    -0.08       0.00    -0.06
    84   5.1939      0.00     0.04       0.00    -0.05
    85   5.1940      0.00    -0.02       0.00     0.02
    86   5.1940      0.00    -0.04       0.00    -0.08
    87   5.1940      0.00    -0.11       0.00    -0.10
    88   5.2130      0.00     0.14       0.00     0.07
    89   5.2459      0.00    -0.47       0.00     0.11
    90   5.2459      0.00    -0.22       0.00     0.12
    91   5.2539      0.00    -0.11       0.00     0.16
    92   5.2540      0.00    -0.29       0.00     0.22
    93   5.2542      0.00     0.20       0.00     0.07
    94   5.2543      0.00     0.16       0.00     0.15
    95   5.2564      0.00     0.18       0.00    -0.60
    96   5.2565      0.00    -0.32       0.00    -0.24
    97   5.3249      0.00    -0.01       0.00     0.03
    98   5.3250      0.00    -0.15       0.00    -0.25
    99   5.3468      0.00     0.25       0.00     0.13
   100   5.3469      0.00     0.24       0.00     0.05
   101   6.2945      0.00     0.02       0.00     0.03
   102   7.3567      0.00     0.12       0.00     0.24
   103   7.3568      0.00    -0.01       0.00    -0.01
   104   7.3568      0.00    -0.18       0.00     0.10
   105   7.3704      0.00     0.16       0.00     0.10
   106   7.3704      0.00     0.31       0.00    -0.12
   107   7.3704      0.00     0.11       0.00     0.02
   108   7.3705      0.00    -0.02       0.00     0.02
   109   7.3731      0.00    -0.11       0.00    -0.41
   110   7.3731      0.00    -0.27       0.00     0.09
   111   7.3732      0.00     0.07       0.00    -0.06

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.

538495    quality flag:3

Type:       CENTAURR  CENTAURR  CENTAURR

axisobj        14.910    14.910    14.910
ecceobj         0.458     0.458     0.458
incobj         20.788    20.788    20.788
qmin            8.027     8.080     8.080
qmax           22.731    22.782    22.776
amean          15.143    15.145    15.175
amin           14.773    14.771    14.841
amax           15.466    15.550    15.551
emean           0.455     0.453     0.449
emin            0.444     0.423     0.430
emax            0.471     0.466     0.470
imean          20.419    20.583    20.530
imin           19.742    19.712    19.450
imax           20.851    21.456    21.697
excite_mean     0.574     0.574     0.570
fracstop        0.003     0.005     0.008
cjmean          3.167     3.167     3.170

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       116.7     149.4     183.4
kozaiamp         27.3      63.3     104.9