Orbit Fit and Astrometric record for 14WD536

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: 14WD536   
# Created Sat Dec  4 02:12:59 2021
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting     65 observations of     65
# Arc:   7.32y
# First observation: 2013/09/10
#  Last observation: 2021/01/06
# Chi-squared of fit:     9.90 DOF:    124 RMS:  0.07
# Min/Max residuals:    -0.23    0.17
# Exact a, adot, b, bdot, g, gdot:
  2.008833E-05  4.281411E-02  3.694047E-06  7.650303E-03  3.420376E-02 -2.843057E-03
# Covariance matrix:
  9.1672E-14 -3.2035E-14  3.7438E-15 -4.9130E-15  2.6938E-14 -8.5788E-14
 -3.2035E-14  4.5766E-14 -7.5581E-15  8.0515E-15  2.9745E-14  1.4984E-13
  3.7438E-15 -7.5581E-15  5.6166E-14 -1.3467E-14 -5.3094E-15 -2.7415E-14
 -4.9130E-15  8.0515E-15 -1.3467E-14  6.0014E-15  4.2491E-15  2.9654E-14
  2.6938E-14  2.9745E-14 -5.3094E-15  4.2491E-15  8.4296E-14  8.7660E-14
 -8.5788E-14  1.4984E-13 -2.7415E-14  2.9654E-14  8.7660E-14  5.4912E-13
#      lat0       lon0       xBary       yBary       zBary        JD0
  -13.766820   16.415969    0.488465   -0.209678   -0.856204  2456545.796428
# Heliocentric elements and errors
Epoch:              2456546.5000  =  2013/09/11
Mean Anomaly:          346.17115 +/-     0.003
Argument of Peri:      329.57735 +/-     0.005
Long of Asc Node:       68.33937 +/-     0.000
Inclination:            16.59390 +/-     0.000
Eccentricity:         0.25136517 +/-    0.0000
Semi-Major Axis:     39.52720047 +/-    0.0018
Time of Perihelion: 2460033.2929 +/-       5.9
Perihelion:          29.59143902 +/-    0.0017
Aphelion:            49.46296191 +/-    0.0025
Period (y)              248.5148 +/-      0.02
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           28.22225031 +/-    0.0002
Ecliptic Y            7.80875363 +/-    0.0001
Ecliptic Z           -6.95736845 +/-    0.0001
Ecliptic XDOT        -0.00104694 +/-    0.0000
Ecliptic YDOT         0.00326492 +/-    0.0000
Ecliptic ZDOT         0.00064907 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   30.09783882 +/-    0.0002
Geocenter to KBO     29.23662473 +/-    0.0002
# Hcoef:  7.73

The following table shows the complete astrometric record for 14WD536. 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 (14WD536) followed by the observatory code and reference code for the source of the astrometry.

2013 09  10.29565  01 21 36.143  -06 15 58.39  23.3g 14WD536   W84  C~4yVK      
2013 09  10.29565  01 21 36.14   -06 15 58.4   23.4g 14WD536   W84  C~3cpP      
2013 09  10.29987  01 21 36.124  -06 15 58.48  22.6r 14WD536   W84  C~4yVK      
2013 09  10.29987  01 21 36.12   -06 15 58.5   22.6r 14WD536   W84  C~3cpP      
2013 09  10.30128  01 21 36.116  -06 15 58.51  22.4i 14WD536   W84  C~4yVK      
2013 09  10.30128  01 21 36.12   -06 15 58.5   22.4i 14WD536   W84  C~3cpP      
2013 09  29.23274  01 19 52.857  -06 28 17.79  23.0g 14WD536   W84  C~4yVK      
2013 09  29.23274  01 19 52.86   -06 28 17.8   23.1g 14WD536   W84  C~3cpP      
2013 09  29.23412  01 19 52.844  -06 28 17.97  22.5r 14WD536   W84  C~4yVK      
2013 09  29.23412  01 19 52.85   -06 28 18.0   22.5r 14WD536   W84  C~3cpP      
2013 09  29.23551  01 19 52.833  -06 28 17.93  22.3i 14WD536   W84  C~4yVK      
2013 09  29.23551  01 19 52.83   -06 28 17.9   22.3i 14WD536   W84  C~3cpP      
2013 11  03.04067  01 16 21.29   -06 44 53.1   22.6r 14WD536   W84  C~35bu      
2013 11  03.10486  01 16 20.92   -06 44 54.2         14WD536   W84  C~35bu      
2013 11  03.19580  01 16 20.38   -06 44 55.8         14WD536   W84  C~35bu      
2014 08  18.35033  01 31 27.189  -04 40 29.77  22.3i 14WD536   W84  C~4yVK      
2014 08  18.35033  01 31 27.19   -04 40 29.8   22.3i 14WD536   W84  C~3cpP      
2014 10  30.21671  01 25 12.913  -05 22 36.41  22.4r 14WD536   W84  C~4yVK      
2014 10  30.21671  01 25 12.91   -05 22 36.4   22.5r 14WD536   W84  C~3cpP      
2014 11  27.10710  01 22 46.347  -05 27 37.97  22.1z 14WD536   W84  C~4yVK      
2014 11  27.10710  01 22 46.34   -05 27 38.0   22.6z 14WD536   W84  C~3cpP      
2014 12  12.05876  01 21 54.586  -05 25 38.53  22.4i 14WD536   W84  C~4yVK      
2014 12  12.05876  01 21 54.59   -05 25 38.5   22.5i 14WD536   W84  C~3cpP      
2014 12  16.11094  01 21 44.766  -05 24 30.99  22.6r 14WD536   W84  C~4yVK      
2014 12  16.11094  01 21 44.77   -05 24 31.0   22.7r 14WD536   W84  C~3cpP      
2014 12  16.11366  01 21 44.753  -05 24 30.88  22.3i 14WD536   W84  C~4yVK      
2014 12  16.11366  01 21 44.75   -05 24 30.9   22.3i 14WD536   W84  C~3cpP      
2015 11  01.20841  01 33 31.083  -04 01 18.72  22.2i 14WD536   W84  C~4yVK      
2015 11  01.20841  01 33 31.08   -04 01 18.7   22.2i 14WD536   W84  C~3cpP      
2015 11  07.13301  01 32 55.843  -04 03 16.25  22.3r 14WD536   W84  C~4yVK      
2015 11  07.13301  01 32 55.84   -04 03 16.2   22.3r 14WD536   W84  C~3cpP      
2015 12  18.08041  01 30 00.238  -04 03 40.78  22.4z 14WD536   W84  C~4yVK      
2015 12  18.08041  01 30 00.24   -04 03 40.8   22.5z 14WD536   W84  C~3cpP      
2016 08  26.35056  01 47 51.217  -02 01 46.12  22.7r 14WD536   W84  C~4yVK      
2016 08  26.35056  01 47 51.22   -02 01 46.1   22.5r 14WD536   W84  C~3cpP      
2016 11  10.12874  01 41 02.911  -02 41 47.26  22.1z 14WD536   W84  C~4yVK      
2016 11  10.12874  01 41 02.91   -02 41 47.2   22.1z 14WD536   W84  C~3cpP      
2016 11  25.08231  01 39 43.374  -02 44 25.71  22.4r 14WD536   W84  C~4yVK      
2016 11  25.08231  01 39 43.37   -02 44 25.7   22.5r 14WD536   W84  C~3cpP      
2016 11  25.08369  01 39 43.366  -02 44 25.77  22.2i 14WD536   W84  C~4yVK      
2016 11  25.08369  01 39 43.36   -02 44 25.7   22.2i 14WD536   W84  C~3cpP      
2016 11  25.08506  01 39 43.358  -02 44 25.67  23.1g 14WD536   W84  C~4yVK      
2016 11  25.08506  01 39 43.36   -02 44 25.7   23.1g 14WD536   W84  C~3cpP      
2016 11  26.14582  01 39 38.329  -02 44 30.05  22.2r 14WD536   W84  C~4yVK      
2016 11  26.14582  01 39 38.33   -02 44 30.0   22.2r 14WD536   W84  C~3cpP      
2016 11  28.16398  01 39 29.029  -02 44 35.58  22.4i 14WD536   W84  C~4yVK      
2016 11  28.16398  01 39 29.03   -02 44 35.6   22.6i 14WD536   W84  C~3cpP      
2016 11  29.12756  01 39 24.722  -02 44 37.10  23.3g 14WD536   W84  C~4yVK      
2016 11  29.12756  01 39 24.72   -02 44 37.1   23.3g 14WD536   W84  C~3cpP      
2017 10  29.24970  01 50 47.323  -01 14 13.29  21.7z 14WD536   W84  C~4yVK      
2018 09  09.39147  02 04 00.147  +00 36 43.07  22.1z 14WD536   W84  C~4yVK      
2018 09  11.37500  02 03 52.225  +00 35 37.86  22.3r 14WD536   W84  C~4yVK      
2018 09  11.37638  02 03 52.223  +00 35 37.79  22.1i 14WD536   W84  C~4yVK      
2018 09  11.37775  02 03 52.205  +00 35 37.83  22.9g 14WD536   W84  C~4yVK      
2018 11  07.22249  01 58 25.958  +00 06 14.87  22.4r 14WD536   W84  C~4yVK      
2018 11  07.22386  01 58 25.953  +00 06 14.87  22.4i 14WD536   W84  C~4yVK      
2018 11  30.12303  01 56 18.055  +00 01 10.99  23.0g 14WD536   W84  C~4yVK      
2019 09  26.54668  02 11 15.763  +01 51 04.87  22.6w 14WD536   F51  C~3IHF      
2019 09  26.55977  02 11 15.705  +01 51 04.61  22.4w 14WD536   F51  C~3IHF      
2019 09  26.57275  02 11 15.613  +01 51 03.93  22.4w 14WD536   F51  C~3IHF      
2020 12  09.101780 02 12 38.119  +02 47 52.51  22.5G 14WD536   G37  C~4UFT      
2020 12  09.157080 02 12 37.874  +02 47 52.47        14WD536   G37  C~4UFT      
2021 01  06.33216  02 11 17.318  +02 52 33.31  22.5w 14WD536   F51  C~4UFT      
2021 01  06.34521  02 11 17.325  +02 52 33.62  22.3w 14WD536   F51  C~4UFT      
2021 01  06.35815  02 11 17.303  +02 52 34.08  22.2w 14WD536   F51  C~4UFT      

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    -0.04       0.00    -0.05
     2   0.0000      0.00    -0.09       0.00    -0.06
     3   0.0000      0.00    -0.07       0.00     0.01
     4   0.0000      0.00    -0.01       0.00     0.03
     5   0.0000      0.00     0.03       0.00     0.06
     6   0.0000      0.00    -0.03       0.00     0.05
     7   0.0518      0.00     0.09       0.00     0.02
     8   0.0518      0.00     0.14       0.00     0.01
     9   0.0519      0.00     0.11       0.00    -0.14
    10   0.0519      0.00     0.02       0.00    -0.11
    11   0.0519      0.00    -0.06       0.00     0.01
    12   0.0519      0.00    -0.02       0.00    -0.02
    13   0.1471      0.00    -0.00       0.00     0.02
    14   0.1473      0.00     0.07       0.00     0.04
    15   0.1476      0.00    -0.06       0.00     0.00
    16   0.9365      0.00     0.02       0.00    -0.10
    17   0.9365      0.00     0.01       0.00    -0.07
    18   1.1360      0.00    -0.03       0.00    -0.00
    19   1.1360      0.00     0.01       0.00    -0.01
    20   1.2124      0.00    -0.12       0.00     0.09
    21   1.2124      0.00    -0.01       0.00     0.12
    22   1.2533      0.00     0.02       0.00     0.05
    23   1.2533      0.00    -0.04       0.00     0.02
    24   1.2644      0.00     0.11       0.00    -0.04
    25   1.2644      0.00     0.05       0.00    -0.03
    26   1.2644      0.00    -0.09       0.00     0.01
    27   1.2644      0.00    -0.05       0.00     0.03
    28   2.1408      0.00    -0.08       0.00     0.06
    29   2.1408      0.00    -0.03       0.00     0.04
    30   2.1570      0.00    -0.03       0.00     0.11
    31   2.1570      0.00     0.01       0.00     0.06
    32   2.2691      0.00     0.14       0.00    -0.02
    33   2.2691      0.00     0.11       0.00     0.00
    34   2.9598      0.00     0.07       0.00     0.06
    35   2.9598      0.00     0.02       0.00     0.04
    36   3.1672      0.00     0.07       0.00     0.14
    37   3.1672      0.00     0.09       0.00     0.08
    38   3.2082      0.00    -0.04       0.00    -0.01
    39   3.2082      0.00     0.02       0.00    -0.02
    40   3.2082      0.00    -0.09       0.00     0.00
    41   3.2082      0.00     0.00       0.00    -0.07
    42   3.2082      0.00     0.01       0.00     0.01
    43   3.2082      0.00    -0.02       0.00     0.04
    44   3.2111      0.00     0.04       0.00     0.02
    45   3.2111      0.00     0.02       0.00    -0.03
    46   3.2166      0.00    -0.00       0.00    -0.02
    47   3.2166      0.00    -0.02       0.00    -0.00
    48   3.2193      0.00    -0.03       0.00    -0.10
    49   3.2193      0.00    -0.00       0.00    -0.10
    50   4.1340      0.00    -0.12       0.00    -0.03
    51   4.9968      0.00    -0.02       0.00     0.03
    52   5.0023      0.00     0.07       0.00    -0.02
    53   5.0023      0.00     0.13       0.00    -0.04
    54   5.0023      0.00    -0.05       0.00     0.04
    55   5.1579      0.00    -0.01       0.00    -0.06
    56   5.1579      0.00     0.04       0.00    -0.03
    57   5.2206      0.00    -0.00       0.00    -0.01
    58   6.0431      0.00    -0.02       0.00    -0.04
    59   6.0432      0.00     0.15       0.00     0.14
    60   6.0432      0.00    -0.20       0.00    -0.11
    61   7.2466      0.00     0.02       0.00    -0.06
    62   7.2467      0.00     0.08       0.00    -0.03
    63   7.3239      0.00    -0.23       0.00    -0.05
    64   7.3239      0.00     0.13       0.00    -0.02
    65   7.3239      0.00     0.04       0.00     0.17

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.

14WD536    quality flag:3

Type:           3:2E      3:2E      3:2E

axisobj        39.743    39.743    39.744
ecceobj         0.255     0.255     0.255
incobj         16.600    16.600    16.600
qmin           28.009    28.009    28.009
qmax           51.639    51.639    51.639
amean          39.455    39.455    39.455
amin           38.954    38.954    38.954
amax           40.021    40.021    40.021
emean           0.239     0.239     0.239
emin            0.184     0.184     0.184
emax            0.292     0.292     0.292
imean          15.478    15.478    15.478
imin           12.956    12.956    12.957
imax           17.755    17.754    17.755
excite_mean     0.360     0.360     0.360
fracstop        1.000     1.000     1.000
cjmean          2.905     2.905     2.905

libcent 0       180.0     180.0     179.9
libamp  0        98.5      98.5      98.5
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       261.5     261.5     261.5
kozaiamp         68.5      68.5      68.5