Orbit Fit and Astrometric record for 14WA556

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: 14WA556   
# Created Fri Dec  3 02:12:55 2021
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting     62 observations of     62
# Arc:   6.71y
# First observation: 2014/11/21
#  Last observation: 2021/08/05
# Chi-squared of fit:     9.05 DOF:    118 RMS:  0.07
# Min/Max residuals:    -0.26    0.18
# Exact a, adot, b, bdot, g, gdot:
  1.787627E-05  2.766153E-02  9.015864E-07  1.718202E-03  2.465938E-02 -4.087904E-03
# Covariance matrix:
  7.3451E-14 -4.2180E-14  1.0486E-15 -1.3419E-15 -2.4248E-15 -1.4937E-13
 -4.2180E-14  4.5276E-14 -1.4356E-15  1.8035E-15  3.9283E-15  1.9851E-13
  1.0486E-15 -1.4356E-15  5.1555E-14 -1.2460E-14 -1.4617E-14 -2.1198E-14
 -1.3419E-15  1.8035E-15 -1.2460E-14  5.5067E-15  8.3376E-15  1.6866E-14
 -2.4248E-15  3.9283E-15 -1.4617E-14  8.3376E-15  2.2172E-13  2.3501E-13
 -1.4937E-13  1.9851E-13 -2.1198E-14  1.6866E-14  2.3501E-13  1.1914E-12
#      lat0       lon0       xBary       yBary       zBary        JD0
  -23.855226    5.964766   -0.783770   -0.243433   -0.550984  2456982.703238
# Heliocentric elements and errors
Epoch:              2456982.5000  =  2014/11/21
Mean Anomaly:          347.41373 +/-     0.004
Argument of Peri:      307.36406 +/-     0.008
Long of Asc Node:       87.11250 +/-     0.000
Inclination:            23.83814 +/-     0.000
Eccentricity:         0.36133400 +/-    0.0001
Semi-Major Axis:     62.34537044 +/-    0.0090
Time of Perihelion: 2463268.8593 +/-      37.7
Perihelion:          39.81786844 +/-    0.0077
Aphelion:            84.87287243 +/-    0.0133
Period (y)              492.2826 +/-      0.11
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           37.40225277 +/-    0.0007
Ecliptic Y            4.69799055 +/-    0.0001
Ecliptic Z          -16.40056181 +/-    0.0003
Ecliptic XDOT        -0.00065950 +/-    0.0000
Ecliptic YDOT         0.00301443 +/-    0.0000
Ecliptic ZDOT         0.00035813 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   41.10943568 +/-    0.0007
Geocenter to KBO     40.55266348 +/-    0.0008
# Hcoef:  6.00

The following table shows the complete astrometric record for 14WA556. 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 (14WA556) followed by the observatory code and reference code for the source of the astrometry.

2014 11  21.20246  01 01 01.099  -19 27 58.18  21.9i 14WA556   W84  C~4yVK      
2014 11  21.20246  01 01 01.10   -19 27 58.2   21.9i 14WA556   W84  C~3cpS      
2014 11  21.20657  01 01 01.093  -19 27 58.16  23.1g 14WA556   W84  C~4yVK      
2014 11  21.20657  01 01 01.09   -19 27 58.2   23.2g 14WA556   W84  C~3cpS      
2014 12  06.08723  01 00 20.726  -19 23 37.26  21.2z 14WA556   W84  C~4yVK      
2014 12  06.08723  01 00 20.73   -19 23 37.3   21.3z 14WA556   W84  C~3cpS      
2014 12  12.09990  01 00 09.625  -19 21 01.19  22.9g 14WA556   W84  C~4yVK      
2014 12  12.09990  01 00 09.62   -19 21 01.2   22.9g 14WA556   W84  C~3cpS      
2014 12  12.13987  01 00 09.560  -19 21 00.10  22.2i 14WA556   W84  C~4yVK      
2014 12  12.13987  01 00 09.56   -19 21 00.1   22.2i 14WA556   W84  C~3cpS      
2014 12  13.12601  01 00 08.051  -19 20 31.73  22.3r 14WA556   W84  C~4yVK      
2014 12  13.12601  01 00 08.05   -19 20 31.7   22.4r 14WA556   W84  C~3cpS      
2014 12  15.12527  01 00 05.272  -19 19 32.16  22.0i 14WA556   W84  C~4yVK      
2014 12  15.12527  01 00 05.27   -19 19 32.2   22.1i 14WA556   W84  C~3cpS      
2014 12  20.12168  00 59 59.969  -19 16 50.51  23.1g 14WA556   W84  C~4yVK      
2014 12  20.12168  00 59 59.97   -19 16 50.5   23.2g 14WA556   W84  C~3cpS      
2014 12  22.05862  00 59 58.549  -19 15 43.22  22.3r 14WA556   W84  C~4yVK      
2014 12  22.05862  00 59 58.55   -19 15 43.2   22.4r 14WA556   W84  C~3cpS      
2015 10  22.15073  01 09 02.559  -18 40 54.05  21.2i 14WA556   W84  C~4yVK      
2015 10  22.15073  01 09 02.56   -18 40 54.0   21.5i 14WA556   W84  C~3cpS      
2015 11  06.12168  01 07 55.000  -18 43 10.97  22.3r 14WA556   W84  C~4yVK      
2015 11  06.12168  01 07 55.00   -18 43 11.0   22.4r 14WA556   W84  C~3cpS      
2015 11  06.12303  01 07 54.993  -18 43 10.98  23.1g 14WA556   W84  C~4yVK      
2015 11  06.12303  01 07 54.99   -18 43 11.0   23.1g 14WA556   W84  C~3cpS      
2015 12  05.09364  01 06 16.536  -18 38 41.20  21.9z 14WA556   W84  C~4yVK      
2016 08  26.38020  01 18 55.823  -17 24 16.57  22.2r 14WA556   W84  C~4yVK      
2016 08  26.38020  01 18 55.82   -17 24 16.5   22.2r 14WA556   W84  C~3cpS      
2016 10  23.15509  01 14 50.546  -17 54 03.37  21.8i 14WA556   W84  C~4yVK      
2016 10  23.15509  01 14 50.54   -17 54 03.4   21.8i 14WA556   W84  C~3cpS      
2016 10  23.15646  01 14 50.543  -17 54 03.37  21.7r 14WA556   W84  C~4yVK      
2016 10  23.15646  01 14 50.54   -17 54 03.4   22.1r 14WA556   W84  C~3cpS      
2016 10  23.15784  01 14 50.523  -17 54 03.41  22.9g 14WA556   W84  C~4yVK      
2016 10  23.15784  01 14 50.52   -17 54 03.4   23.0g 14WA556   W84  C~3cpS      
2016 11  07.12975  01 13 42.916  -17 56 15.40  21.9i 14WA556   W84  C~4yVK      
2016 11  07.12975  01 13 42.92   -17 56 15.4   22.0i 14WA556   W84  C~3cpS      
2016 11  30.15696  01 12 20.034  -17 53 31.73  22.2r 14WA556   W84  C~4yVK      
2016 11  30.15696  01 12 20.03   -17 53 31.7   22.3r 14WA556   W84  C~3cpS      
2016 12  23.04927  01 11 37.779  -17 43 37.47  21.3z 14WA556   W84  C~4yVK      
2016 12  23.04927  01 11 37.78   -17 43 37.4   21.8z 14WA556   W84  C~3cpS      
2017 10  21.14940  01 20 56.613  -17 05 09.47  22.7g 14WA556   W84  C~4yVK      
2017 11  17.11222  01 18 57.661  -17 08 11.40  22.0i 14WA556   W84  C~4yVK      
2017 11  17.11359  01 18 57.658  -17 08 11.42  22.1r 14WA556   W84  C~4yVK      
2017 11  17.11495  01 18 57.651  -17 08 11.45  22.9g 14WA556   W84  C~4yVK      
2017 11  23.03126  01 18 36.013  -17 07 30.39  21.7z 14WA556   W84  C~4yVK      
2017 11  25.05525  01 18 29.126  -17 07 09.65  21.1z 14WA556   W84  C~4yVK      
2017 11  27.05247  01 18 22.616  -17 06 45.45  21.7z 14WA556   W84  C~4yVK      
2017 11  27.05386  01 18 22.615  -17 06 45.49  21.8i 14WA556   W84  C~4yVK      
2017 12  11.05487  01 17 45.497  -17 02 24.11  22.1r 14WA556   W84  C~4yVK      
2017 12  11.05625  01 17 45.500  -17 02 24.11  22.8g 14WA556   W84  C~4yVK      
2018 09  11.40312  01 29 50.518  -15 56 08.04  21.9i 14WA556   W84  C~4yVK      
2018 11  16.17199  01 24 55.554  -16 19 24.36  21.8i 14WA556   W84  C~4yVK      
2020 09  14.47138  01 41 22.090  -14 16 27.67  22.2w 14WA556   F51  C~48ES      
2020 09  14.48370  01 41 22.035  -14 16 28.20  22.2w 14WA556   F51  C~48ES      
2020 09  14.49601  01 41 21.990  -14 16 28.45  22.3w 14WA556   F51  C~48ES      
2020 09  14.50832  01 41 21.946  -14 16 29.00  21.9w 14WA556   F51  C~48ES      
2020 09  17.54127  01 41 10.307  -14 18 19.16  22.1w 14WA556   F51  C~48ES      
2020 09  17.56105  01 41 10.213  -14 18 19.75  22.0w 14WA556   F51  C~48ES      
2020 09  17.58039  01 41 10.150  -14 18 20.60  22.1w 14WA556   F51  C~48ES      
2020 09  17.59942  01 41 10.064  -14 18 21.34  22.1w 14WA556   F51  C~48ES      
2021 08  05.577588 01 48 40.332  -12 59 45.59  22.2w 14WA556   F51  C~4xSN      
2021 08  05.588263 01 48 40.333  -12 59 45.84  22.3w 14WA556   F51  C~4xSN      
2021 08  05.598888 01 48 40.317  -12 59 46.13  22.3w 14WA556   F51  C~4xSN      

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    -0.05       0.00     0.03
     2   0.0000      0.00    -0.03       0.00     0.01
     3   0.0000      0.00     0.02       0.00    -0.04
     4   0.0000      0.00     0.07       0.00    -0.00
     5   0.0408      0.00     0.18       0.00     0.05
     6   0.0408      0.00     0.12       0.00     0.09
     7   0.0572      0.00     0.00       0.00     0.00
     8   0.0572      0.00    -0.07       0.00    -0.01
     9   0.0573      0.00     0.01       0.00    -0.05
    10   0.0573      0.00     0.01       0.00    -0.05
    11   0.0600      0.00    -0.05       0.00     0.07
    12   0.0600      0.00    -0.03       0.00     0.04
    13   0.0655      0.00    -0.04       0.00    -0.01
    14   0.0655      0.00    -0.01       0.00     0.03
    15   0.0792      0.00     0.09       0.00     0.04
    16   0.0792      0.00     0.10       0.00     0.05
    17   0.0845      0.00    -0.03       0.00    -0.01
    18   0.0845      0.00    -0.04       0.00    -0.03
    19   0.9170      0.00    -0.11       0.00    -0.21
    20   0.9170      0.00    -0.13       0.00    -0.26
    21   0.9580      0.00     0.01       0.00     0.01
    22   0.9580      0.00     0.01       0.00     0.04
    23   0.9580      0.00    -0.05       0.00     0.02
    24   0.9580      0.00    -0.00       0.00     0.04
    25   1.0373      0.00    -0.01       0.00     0.08
    26   1.7637      0.00    -0.03       0.00     0.13
    27   1.7637      0.00     0.02       0.00     0.06
    28   1.9218      0.00    -0.02       0.00    -0.02
    29   1.9218      0.00     0.07       0.00     0.01
    30   1.9218      0.00     0.08       0.00    -0.00
    31   1.9218      0.00     0.13       0.00     0.03
    32   1.9218      0.00    -0.12       0.00     0.02
    33   1.9218      0.00    -0.07       0.00     0.01
    34   1.9628      0.00     0.15       0.00     0.01
    35   1.9628      0.00     0.09       0.00     0.01
    36   2.0259      0.00    -0.07       0.00     0.04
    37   2.0259      0.00    -0.01       0.00     0.01
    38   2.0886      0.00     0.01       0.00    -0.01
    39   2.0886      0.00    -0.01       0.00    -0.08
    40   2.9157      0.00     0.01       0.00     0.03
    41   2.9895      0.00     0.02       0.00     0.08
    42   2.9895      0.00     0.06       0.00     0.05
    43   2.9895      0.00     0.03       0.00     0.02
    44   3.0057      0.00     0.00       0.00     0.03
    45   3.0112      0.00    -0.03       0.00    -0.14
    46   3.0167      0.00     0.02       0.00     0.03
    47   3.0167      0.00     0.07       0.00    -0.03
    48   3.0550      0.00    -0.08       0.00     0.02
    49   3.0550      0.00     0.01       0.00    -0.02
    50   3.8062      0.00     0.03       0.00     0.03
    51   3.9862      0.00    -0.05       0.00     0.03
    52   5.8159      0.00     0.07       0.00    -0.02
    53   5.8160      0.00    -0.05       0.00    -0.09
    54   5.8160      0.00    -0.01       0.00     0.11
    55   5.8160      0.00     0.04       0.00     0.01
    56   5.8243      0.00     0.09       0.00    -0.03
    57   5.8244      0.00    -0.13       0.00     0.09
    58   5.8244      0.00     0.09       0.00    -0.07
    59   5.8245      0.00    -0.05       0.00    -0.13
    60   6.7060      0.00    -0.03       0.00    -0.09
    61   6.7061      0.00     0.07       0.00     0.02
    62   6.7061      0.00    -0.09       0.00     0.08

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.

14WA556    quality flag:2

Type:       SCATNEAR  SCATNEAR     3:1EE

axisobj        63.253    63.253    63.254
ecceobj         0.370     0.370     0.370
incobj         23.848    23.848    23.848
qmin           39.010    38.966    39.013
qmax           87.808    87.812    87.799
amean          62.629    62.635    62.630
amin           61.699    61.714    61.683
amax           63.749    63.790    63.790
emean           0.359     0.357     0.359
emin            0.340     0.329     0.346
emax            0.377     0.378     0.378
imean          22.556    22.641    22.526
imin           22.065    22.059    22.060
imax           23.123    23.614    22.845
excite_mean     0.525     0.525     0.525
fracstop        1.000     1.000     1.000
cjmean          2.968     2.968     2.968

libcent 0      -180.0    -180.0     182.7
libamp  0      -180.0    -180.0     177.2
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       198.6     180.1     201.5
kozaiamp        180.0     180.0     180.0