Orbit Fit and Astrometric record for 558224

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: 558224    
# Created Sat Dec  4 02:08:14 2021
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting    102 observations of    102
# Arc:   8.24y
# First observation: 2012/12/22
#  Last observation: 2021/03/20
# Chi-squared of fit:   117.17 DOF:    198 RMS:  0.19
# Min/Max residuals:    -0.67    0.51
# Exact a, adot, b, bdot, g, gdot:
  1.617920E-05  2.782462E-02  3.466784E-06  7.050520E-03  2.665179E-02 -1.980738E-03
# 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
   11.831022  123.413856    0.526028    0.169902   -0.810735  2456284.041618
# Heliocentric elements and errors
Epoch:              2456284.5000  =  2012/12/23
Mean Anomaly:          333.63707 +/-     0.000
Argument of Peri:       75.58518 +/-     0.000
Long of Asc Node:       84.48353 +/-     0.000
Inclination:            18.35454 +/-     0.000
Eccentricity:         0.15706668 +/-    0.0000
Semi-Major Axis:     44.30141049 +/-    0.0000
Time of Perihelion: 2464171.5747 +/-       0.0
Perihelion:          37.34313524 +/-    0.0000
Aphelion:            51.25968574 +/-    0.0000
Period (y)              294.8727 +/-      0.00
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -20.23941384 +/-    0.0000
Ecliptic Y           31.63714058 +/-    0.0000
Ecliptic Z            7.69286564 +/-    0.0000
Ecliptic XDOT        -0.00220058 +/-    0.0000
Ecliptic YDOT        -0.00186281 +/-    0.0000
Ecliptic ZDOT         0.00066730 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   38.33701499 +/-    0.0000
Geocenter to KBO     37.52101378 +/-    0.0000
# Hcoef:  6.47

The following table shows the complete astrometric record for 558224. 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 (558224) followed by the observatory code and reference code for the source of the astrometry.

2012 12  22.54084  08 35 35.581  +30 52 10.26  22.1w 558224    F51  C~401Z      
2012 12  22.55493  08 35 35.507  +30 52 10.69  22.0w 558224    F51  C~401Z      
2012 12  22.56901  08 35 35.459  +30 52 11.19  22.2w 558224    F51  C~401Z      
2012 12  22.58306  08 35 35.387  +30 52 11.57  22.1w 558224    F51  C~401Z      
2014 12  29.56604  08 50 30.399  +30 50 13.43  22.1w 558224    F51  C~1vXz      
2014 12  29.57785  08 50 30.334  +30 50 13.78  22.1w 558224    F51  C~1vXz      
2014 12  29.58963  08 50 30.272  +30 50 14.16  22.1w 558224    F51  C~1vXz      
2014 12  29.60145  08 50 30.218  +30 50 14.55  22.2w 558224    F51  C~1vXz      
2015 01  24.39861  08 48 08.093  +31 03 13.10  22.1w 558224    F51  C~1vXz      
2015 01  24.41022  08 48 08.031  +31 03 13.70  22.0w 558224    F51  C~1vXz      
2015 01  24.42195  08 48 07.956  +31 03 13.92  22.3w 558224    F51  C~1vXz      
2015 01  27.52151  08 47 49.466  +31 04 34.91  22.3w 558224    F51  C~1vXz      
2015 01  27.53312  08 47 49.386  +31 04 35.27  22.1w 558224    F51  C~1vXz      
2015 01  27.54476  08 47 49.326  +31 04 35.54  22.0w 558224    F51  C~1vXz      
2015 01  27.55642  08 47 49.245  +31 04 35.74  21.8w 558224    F51  C~1vXz      
2015 02  12.294491 08 46 15.931  +31 10 24.64  21.4G 558224    F51  C~401Z      
2015 02  12.307739 08 46 15.869  +31 10 25.12  22.4G 558224    F51  C~401Z      
2015 02  12.321044 08 46 15.776  +31 10 25.45  21.8G 558224    F51  C~401Z      
2015 02  12.334412 08 46 15.736  +31 10 25.60  21.7G 558224    F51  C~401Z      
2015 02  13.293485 08 46 10.191  +31 10 42.97  22.7G 558224    F51  C~401Z      
2015 02  13.306819 08 46 10.115  +31 10 42.83  21.7G 558224    F51  C~401Z      
2015 02  13.320233 08 46 10.061  +31 10 43.20  22.2G 558224    F51  C~401Z      
2015 02  13.333584 08 46 09.948  +31 10 43.51  22.5G 558224    F51  C~401Z      
2015 03  24.370961 08 43 11.607  +31 15 30.37  21.8G 558224    F51  C~401Z      
2015 03  24.383581 08 43 11.553  +31 15 30.33  22.0G 558224    F51  C~401Z      
2015 03  24.396115 08 43 11.522  +31 15 30.16  21.9G 558224    F51  C~401Z      
2015 03  24.408679 08 43 11.491  +31 15 30.11  21.8G 558224    F51  C~401Z      
2016 01  02.636427 08 57 57.236  +30 47 09.13  22.1G 558224    F51  C~401Z      
2016 01  14.517865 08 56 54.294  +30 53 32.93  22.4G 558224    F51  C~401Z      
2016 01  14.531432 08 56 54.219  +30 53 33.45  22.2G 558224    F51  C~401Z      
2016 01  14.558704 08 56 54.019  +30 53 34.78  23.1G 558224    F51  C~401Z      
2016 01  17.364973 08 56 38.242  +30 55 00.31  22.1G 558224    F51  C~401Z      
2016 01  17.376703 08 56 38.151  +30 55 00.76  22.1G 558224    F51  C~401Z      
2016 01  17.388744 08 56 38.085  +30 55 01.28  22.1G 558224    F51  C~401Z      
2016 01  17.400991 08 56 38.012  +30 55 01.40  22.4G 558224    F51  C~401Z      
2016 01  29.398158 08 55 27.662  +31 00 42.83  21.9G 558224    F51  C~401Z      
2016 01  29.409600 08 55 27.592  +31 00 43.61  21.3G 558224    F51  C~401Z      
2016 01  29.421046 08 55 27.514  +31 00 43.65  21.2G 558224    F51  C~401Z      
2016 02  04.317498 08 54 52.324  +31 03 11.66  22.5G 558224    F51  C~401Z      
2016 02  04.329571 08 54 52.266  +31 03 12.06  22.7G 558224    F51  C~401Z      
2016 02  04.341691 08 54 52.171  +31 03 12.31  22.1G 558224    F51  C~401Z      
2016 02  04.353850 08 54 52.119  +31 03 12.41  22.1G 558224    F51  C~401Z      
2016 02  13.288931 08 53 59.419  +31 06 26.17  21.7G 558224    F51  C~401Z      
2016 02  13.299871 08 53 59.314  +31 06 26.94  22.0G 558224    F51  C~401Z      
2016 02  13.310874 08 53 59.249  +31 06 27.02  22.4G 558224    F51  C~401Z      
2016 02  13.321851 08 53 59.159  +31 06 26.74  22.3G 558224    F51  C~401Z      
2016 11  08.597791 09 07 41.168  +30 12 22.19  22.2G 558224    F51  C~401Z      
2016 11  08.599943 09 07 41.182  +30 12 22.39  22.2G 558224    F51  C~401Z      
2016 11  08.609955 09 07 41.194  +30 12 22.55  22.5G 558224    F51  C~401Z      
2016 11  08.610697 09 07 41.191  +30 12 22.51  22.4G 558224    F51  C~401Z      
2016 11  08.621436 09 07 41.193  +30 12 22.77  22.3G 558224    F51  C~401Z      
2016 11  08.632213 09 07 41.206  +30 12 23.08  22.2G 558224    F51  C~401Z      
2017 01  31.520229 09 02 59.307  +30 55 44.38  22.3G 558224    F51  C~401Z      
2017 01  31.530953 09 02 59.235  +30 55 44.71  22.2G 558224    F51  C~401a      
2017 01  31.541690 09 02 59.177  +30 55 44.99  22.4G 558224    F51  C~401a      
2017 01  31.552413 09 02 59.100  +30 55 45.25  22.0G 558224    F51  C~401a      
2018 01  17.584239 09 12 10.432  +30 40 34.19  22.2G 558224    F51  C~401a      
2018 01  17.595217 09 12 10.414  +30 40 34.46  22.4G 558224    F51  C~401a      
2018 01  17.606180 09 12 10.335  +30 40 34.91  21.9G 558224    F51  C~401a      
2018 01  17.617102 09 12 10.253  +30 40 35.35  22.0G 558224    F51  C~401a      
2018 03  06.251620 09 07 39.847  +30 58 43.08  22.1G 558224    F51  C~401a      
2018 03  06.262650 09 07 39.797  +30 58 43.17  22.1G 558224    F51  C~401a      
2018 03  06.273678 09 07 39.719  +30 58 43.31  21.9G 558224    F51  C~401a      
2018 03  06.284709 09 07 39.686  +30 58 43.56  22.1G 558224    F51  C~401a      
2018 03  19.244974 09 06 42.080  +31 00 00.95  22.0G 558224    F51  C~401a      
2018 12  16.623560 09 22 18.944  +30 11 24.63  23.3G 558224    F51  C~401a      
2018 12  16.631814 09 22 18.910  +30 11 24.87  22.3G 558224    F51  C~401a      
2018 12  16.640027 09 22 18.867  +30 11 25.32  22.6G 558224    F51  C~401a      
2018 12  16.648225 09 22 18.874  +30 11 25.46  22.5G 558224    F51  C~401a      
2019 01  07.564916 09 20 51.659  +30 24 34.46  22.2G 558224    F51  C~401a      
2019 01  07.576201 09 20 51.607  +30 24 34.80  22.5G 558224    F51  C~401a      
2019 01  07.587527 09 20 51.541  +30 24 35.30  22.0G 558224    F51  C~401a      
2019 01  07.598892 09 20 51.492  +30 24 35.50  22.2G 558224    F51  C~401a      
2019 01  08.422664 09 20 47.480  +30 25 04.96  22.4G 558224    F51  C~401a      
2019 01  08.434951 09 20 47.415  +30 25 05.46  22.3G 558224    F51  C~401a      
2019 01  08.447209 09 20 47.344  +30 25 05.92  21.9G 558224    F51  C~401a      
2019 01  08.459565 09 20 47.282  +30 25 06.32  22.1G 558224    F51  C~401a      
2019 01  17.422164 09 20 00.712  +30 30 19.50  22.3G 558224    F52  C~401a      
2019 01  17.444058 09 20 00.589  +30 30 20.74  22.6G 558224    F52  C~401a      
2019 01  25.390329 09 19 16.127  +30 34 42.59  22.2G 558224    F52  C~401a      
2019 01  25.401237 09 19 16.032  +30 34 43.05  21.8G 558224    F52  C~401a      
2019 11  28.575565 09 30 32.865  +29 49 07.30  21.5G 558224    F52  C~401a      
2019 12  04.546051 09 30 26.668  +29 52 13.84  22.8G 558224    F51  C~401a      
2019 12  04.559355 09 30 26.645  +29 52 14.20  22.8G 558224    F51  C~401a      
2019 12  04.572695 09 30 26.618  +29 52 14.68  22.2G 558224    F51  C~401a      
2019 12  04.586114 09 30 26.595  +29 52 15.02  22.1G 558224    F51  C~401a      
2019 12  10.497338 09 30 16.384  +29 55 30.93  21.6G 558224    F51  C~401a      
2019 12  10.509631 09 30 16.352  +29 55 31.62  21.9G 558224    F51  C~401a      
2019 12  10.521821 09 30 16.325  +29 55 31.94  22.2G 558224    F51  C~401a      
2019 12  10.534049 09 30 16.306  +29 55 32.30  22.2G 558224    F51  C~401a      
2019 12  30.662913 09 29 13.647  +30 07 36.63  22.3G 558224    F51  C~401a      
2020 01  24.406963 09 27 11.201  +30 22 26.01  21.5G 558224    F52  C~401a      
2020 01  24.418236 09 27 11.114  +30 22 26.44  22.0G 558224    F52  C~401a      
2020 01  24.429517 09 27 11.064  +30 22 26.60  22.4G 558224    F52  C~401a      
2020 01  24.440835 09 27 11.011  +30 22 27.23  20.9G 558224    F52  C~401a      
2020 01  31.396518 09 26 31.175  +30 26 11.65  21.7G 558224    F51  C~401a      
2020 01  31.407975 09 26 31.091  +30 26 12.04  21.5G 558224    F51  C~401a      
2020 01  31.419455 09 26 31.035  +30 26 12.74  21.2G 558224    F51  C~401a      
2020 01  31.430887 09 26 30.927  +30 26 13.35  22.7G 558224    F51  C~401a      
2021 03  20.148600 09 29 55.451  +30 28 52.99  22.2G 558224    G37  C~4i6K      
2021 03  20.188700 09 29 55.288  +30 28 53.37        558224    G37  C~4i6K      
2021 03  20.227860 09 29 55.106  +30 28 53.34        558224    G37  C~4i6K      

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     0.13
     2   0.0000      0.00     0.01       0.00     0.12
     3   0.0001      0.00     0.29       0.00     0.19
     4   0.0001      0.00     0.21       0.00     0.14
     5   2.0179      0.00     0.13       0.00     0.03
     6   2.0179      0.00     0.03       0.00     0.00
     7   2.0179      0.00    -0.03       0.00     0.00
     8   2.0180      0.00     0.03       0.00     0.01
     9   2.0886      0.00    -0.26       0.00    -0.17
    10   2.0886      0.00    -0.13       0.00     0.11
    11   2.0887      0.00    -0.19       0.00     0.02
    12   2.0971      0.00     0.06       0.00     0.07
    13   2.0972      0.00    -0.08       0.00     0.14
    14   2.0972      0.00     0.08       0.00     0.12
    15   2.0972      0.00    -0.07       0.00     0.02
    16   2.1403      0.00    -0.52       0.00     0.04
    17   2.1404      0.00    -0.29       0.00     0.27
    18   2.1404      0.00    -0.51       0.00     0.35
    19   2.1404      0.00     0.07       0.00     0.24
    20   2.1431      0.00    -0.20       0.00     0.10
    21   2.1431      0.00    -0.17       0.00    -0.29
    22   2.1431      0.00     0.20       0.00    -0.16
    23   2.1432      0.00    -0.33       0.00    -0.10
    24   2.2500      0.00     0.24       0.00    -0.08
    25   2.2501      0.00     0.01       0.00    -0.07
    26   2.2501      0.00     0.11       0.00    -0.19
    27   2.2502      0.00     0.21       0.00    -0.18
    28   3.0283      0.00     0.14       0.00     0.08
    29   3.0609      0.00    -0.04       0.00    -0.09
    30   3.0609      0.00    -0.00       0.00     0.01
    31   3.0610      0.00    -0.67       0.00     0.50
    32   3.0686      0.00     0.48       0.00    -0.23
    33   3.0687      0.00     0.13       0.00    -0.14
    34   3.0687      0.00     0.19       0.00     0.01
    35   3.0687      0.00     0.16       0.00    -0.25
    36   3.1016      0.00    -0.01       0.00    -0.20
    37   3.1016      0.00    -0.02       0.00     0.27
    38   3.1017      0.00    -0.15       0.00     0.01
    39   3.1178      0.00    -0.05       0.00     0.02
    40   3.1178      0.00     0.18       0.00     0.13
    41   3.1179      0.00    -0.15       0.00     0.08
    42   3.1179      0.00     0.18       0.00    -0.11
    43   3.1424      0.00     0.41       0.00    -0.47
    44   3.1424      0.00    -0.20       0.00     0.08
    45   3.1424      0.00    -0.20       0.00    -0.06
    46   3.1425      0.00    -0.58       0.00    -0.56
    47   3.8797      0.00    -0.13       0.00    -0.03
    48   3.8797      0.00     0.05       0.00     0.12
    49   3.8797      0.00     0.11       0.00     0.05
    50   3.8797      0.00     0.06       0.00    -0.00
    51   3.8798      0.00    -0.05       0.00     0.01
    52   3.8798      0.00     0.02       0.00     0.08
    53   4.1095      0.00     0.08       0.00    -0.04
    54   4.1095      0.00    -0.02       0.00     0.01
    55   4.1095      0.00     0.08       0.00     0.01
    56   4.1095      0.00    -0.10       0.00    -0.01
    57   5.0706      0.00    -0.19       0.00     0.01
    58   5.0706      0.00     0.47       0.00    -0.08
    59   5.0707      0.00     0.22       0.00     0.02
    60   5.0707      0.00    -0.09       0.00     0.10
    61   5.2011      0.00     0.08       0.00    -0.18
    62   5.2012      0.00     0.16       0.00    -0.21
    63   5.2012      0.00    -0.18       0.00    -0.18
    64   5.2012      0.00     0.16       0.00    -0.05
    65   5.2367      0.00    -0.01       0.00    -0.44
    66   5.9824      0.00     0.06       0.00    -0.03
    67   5.9825      0.00    -0.07       0.00    -0.08
    68   5.9825      0.00    -0.34       0.00     0.09
    69   5.9825      0.00     0.14       0.00    -0.06
    70   6.0425      0.00     0.06       0.00     0.09
    71   6.0425      0.00     0.12       0.00     0.03
    72   6.0426      0.00    -0.03       0.00     0.13
    73   6.0426      0.00     0.08       0.00    -0.08
    74   6.0449      0.00     0.18       0.00    -0.07
    75   6.0449      0.00     0.13       0.00    -0.01
    76   6.0449      0.00    -0.01       0.00     0.00
    77   6.0450      0.00    -0.01       0.00    -0.04
    78   6.0695      0.00     0.10       0.00    -0.34
    79   6.0696      0.00     0.08       0.00     0.15
    80   6.0913      0.00     0.42       0.00    -0.18
    81   6.0913      0.00    -0.05       0.00    -0.07
    82   6.9323      0.00    -0.23       0.00    -0.52
    83   6.9487      0.00     0.10       0.00     0.13
    84   6.9487      0.00     0.05       0.00     0.06
    85   6.9488      0.00    -0.06       0.00     0.11
    86   6.9488      0.00    -0.10       0.00     0.01
    87   6.9650      0.00     0.05       0.00    -0.06
    88   6.9650      0.00    -0.03       0.00     0.21
    89   6.9650      0.00    -0.04       0.00     0.11
    90   6.9651      0.00     0.07       0.00     0.05
    91   7.0202      0.00     0.20       0.00     0.02
    92   7.0879      0.00    -0.01       0.00     0.12
    93   7.0880      0.00    -0.35       0.00     0.17
    94   7.0880      0.00    -0.13       0.00    -0.05
    95   7.0880      0.00     0.05       0.00     0.20
    96   7.1071      0.00     0.24       0.00    -0.12
    97   7.1071      0.00    -0.01       0.00    -0.09
    98   7.1071      0.00     0.17       0.00     0.25
    99   7.1072      0.00    -0.43       0.00     0.51
   100   8.2399      0.00    -0.05       0.00    -0.02
   101   8.2400      0.00     0.12       0.00     0.17
   102   8.2401      0.00    -0.06       0.00    -0.04

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.

558224    quality flag:3

Type:       SCATEXTD  SCATEXTD  SCATEXTD

axisobj        44.231    44.231    44.231
ecceobj         0.154     0.154     0.154
incobj         18.349    18.349    18.349
qmin           36.703    36.718    36.712
qmax           51.962    51.930    51.874
amean          44.135    44.135    44.135
amin           43.762    43.773    43.771
amax           44.555    44.542    44.552
emean           0.150     0.150     0.150
emin            0.134     0.134     0.134
emax            0.167     0.166     0.165
imean          16.896    16.895    16.896
imin           16.327    16.325    16.327
imax           17.484    17.488    17.485
excite_mean     0.327     0.327     0.327
fracstop        1.000     1.000     1.000
cjmean          2.973     2.973     2.973

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       177.6     177.6     177.6
kozaiamp        180.0     180.0     180.0