Orbit Fit and Astrometric record for 14UK228

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: 14UK228   
# Created Wed Dec  8 02:12:51 2021
# Orbit generated from Bernstein formalism
# Fitting     47 observations of     47
# Arc:   4.06y
# First observation: 2013/08/09
#  Last observation: 2017/08/30
Preliminary a, adot, b, bdot, g, gdot:
  -0.000275   0.023497  -0.000037   0.002915   0.022846   0.000000
# Chi-squared of fit:    11.97 DOF:     88 RMS:  0.09
# Min/Max residuals:    -0.25    0.25
# Exact a, adot, b, bdot, g, gdot:
  1.575131E-05  2.283132E-02  2.065887E-06  2.813295E-03  2.267872E-02 -5.979882E-03
# Covariance matrix:
  1.4373E-13 -7.1505E-14  1.7486E-15 -5.4905E-15  5.5419E-14 -4.6540E-13
 -7.1505E-14  1.3715E-13 -7.8886E-15  1.6539E-14  2.7324E-14  1.4809E-12
  1.7486E-15 -7.8886E-15  6.2196E-14 -3.2736E-14 -3.2755E-15 -1.1276E-13
 -5.4905E-15  1.6539E-14 -3.2736E-14  3.4453E-14  5.0739E-15  2.3375E-13
  5.5419E-14  2.7324E-14 -3.2755E-15  5.0739E-15  7.1780E-14  4.8008E-13
 -4.6540E-13  1.4809E-12 -1.1276E-13  2.3375E-13  4.8008E-13  2.0968E-11
#      lat0       lon0       xBary       yBary       zBary        JD0
    2.909026   27.967151    0.961332    0.016654   -0.327098  2456514.003748
# Heliocentric elements and errors
Epoch:              2456510.5000  =  2013/08/06
Mean Anomaly:          327.21817 +/-     0.009
Argument of Peri:       87.98721 +/-     0.020
Long of Asc Node:        4.78764 +/-     0.001
Inclination:             7.68625 +/-     0.000
Eccentricity:         0.35790734 +/-    0.0002
Semi-Major Axis:     58.41835771 +/-    0.0093
Time of Perihelion: 2471361.4136 +/-       1.7
Perihelion:          37.50999852 +/-    0.0130
Aphelion:            79.32671689 +/-    0.0172
Period (y)              446.5111 +/-      0.11
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           39.63422634 +/-    0.0005
Ecliptic Y           19.95965000 +/-    0.0002
Ecliptic Z            2.23792473 +/-    0.0000
Ecliptic XDOT        -0.00195082 +/-    0.0000
Ecliptic YDOT         0.00208730 +/-    0.0000
Ecliptic ZDOT         0.00030270 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   44.43273380 +/-    0.0004
Geocenter to KBO     44.09420398 +/-    0.0005
# Hcoef:  7.43

The following table shows the complete astrometric record for 14UK228. 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 (14UK228) followed by the observatory code and reference code for the source of the astrometry.

2013 08  09.50297  01 39 37.004  +13 27 57.06  24.4r 14UK228   568  C~2SDf      
2013 08  09.54639  01 39 36.951  +13 27 57.05  23.8r 14UK228   568  C~2SDf      
2013 09  02.42913  01 38 50.951  +13 25 46.76  23.7r 14UK228   568  C~2SDf      
2013 09  02.47226  01 38 50.836  +13 25 46.19  23.9r 14UK228   568  C~2SDf      
2013 09  03.44820  01 38 48.089  +13 25 35.40  24.0r 14UK228   568  C~2SDf      
2013 09  03.49483  01 38 47.960  +13 25 34.73  23.9r 14UK228   568  C~2SDf      
2013 10  08.50929  01 36 36.962  +13 15 25.84  23.9r 14UK228   568  C~2SDf      
2013 10  30.50202  01 34 59.948  +13 06 50.63  23.3r 14UK228   568  C~2SDf      
2013 11  01.50542  01 34 51.283  +13 06 02.72  23.9r 14UK228   568  C~2SDf      
2013 12  04.39045  01 32 51.013  +12 54 16.20  23.6r 14UK228   568  C~2SDf      
2013 12  05.27155  01 32 48.604  +12 54 00.77  23.7r 14UK228   568  C~2SDf      
2013 12  05.27696  01 32 48.585  +12 54 00.86  24.0r 14UK228   568  C~2SDf      
2013 12  05.28395  01 32 48.560  +12 54 00.68  23.6r 14UK228   568  C~2SDf      
2013 12  29.25579  01 32 06.112  +12 49 04.11  23.7r 14UK228   568  C~2SDf      
2013 12  30.34676  01 32 05.304  +12 48 56.48  24.4r 14UK228   568  C~2SDf      
2013 12  30.35196  01 32 05.322  +12 48 56.35  23.8r 14UK228   568  C~2SDf      
2014 01  02.23765  01 32 03.717  +12 48 39.69  23.7r 14UK228   568  C~2SDf      
2014 01  02.28476  01 32 03.695  +12 48 39.41  24.0r 14UK228   568  C~2SDf      
2014 01  02.36727  01 32 03.644  +12 48 38.97  24.3r 14UK228   568  C~2SDf      
2014 01  03.20771  01 32 03.344  +12 48 34.90  23.8r 14UK228   568  C~2SDf      
2014 01  03.25016  01 32 03.327  +12 48 34.80  23.9r 14UK228   568  C~2SDf      
2014 01  03.31330  01 32 03.307  +12 48 34.39  24.0r 14UK228   568  C~2SDf      
2014 07  26.51805  01 44 30.477  +14 04 19.74  23.9r 14UK228   568  C~2SDf      
2014 07  26.56107  01 44 30.483  +14 04 20.10  23.8r 14UK228   568  C~2SDf      
2014 07  26.60436  01 44 30.490  +14 04 20.47  24.1r 14UK228   568  C~2SDf      
2014 08  24.45388  01 44 04.336  +14 04 48.07  24.2r 14UK228   568  C~2SDf      
2014 08  24.52781  01 44 04.179  +14 04 47.67  23.8r 14UK228   568  C~2SDf      
2014 08  30.43216  01 43 50.660  +14 04 04.91  24.0r 14UK228   568  C~2SDf      
2014 08  30.54047  01 43 50.377  +14 04 03.87  23.9r 14UK228   568  C~2SDf      
2014 09  18.45910  01 42 51.467  +14 00 07.04  24.1r 14UK228   568  C~2SDf      
2014 09  18.50183  01 42 51.304  +14 00 06.36  23.8r 14UK228   568  C~2SDf      
2014 09  23.50009  01 42 32.427  +13 58 41.37  23.7r 14UK228   568  C~2SDf      
2014 10  22.28248  01 40 28.749  +13 48 28.44  24.0r 14UK228   568  C~2SDf      
2014 10  22.32723  01 40 28.524  +13 48 27.48  23.6r 14UK228   568  C~2SDf      
2014 10  22.37167  01 40 28.325  +13 48 26.42  23.4r 14UK228   568  C~2SDf      
2014 10  23.46633  01 40 23.397  +13 48 00.39  23.5r 14UK228   568  C~2SDf      
2014 10  25.48228  01 40 14.368  +13 47 12.50  23.8r 14UK228   568  C~2SDf      
2014 11  20.21348  01 38 26.706  +13 37 11.64  23.7r 14UK228   568  C~2SDf      
2014 11  20.35396  01 38 26.158  +13 37 08.77  23.9r 14UK228   568  C~2SDf      
2014 11  21.25141  01 38 22.855  +13 36 49.26  24.0r 14UK228   568  C~2SDf      
2014 11  21.41785  01 38 22.236  +13 36 45.88  24.0r 14UK228   568  C~2SDf      
2015 02  18.26839  01 38 00.654  +13 31 02.84  23.8r 14UK228   568  C~2SDf      
2015 12  07.42022  01 42 24.402  +14 09 50.97  24.1w 14UK228   568  C~2SDf      
2016 11  04.38287  01 49 25.596  +14 59 54.54  24.0w 14UK228   568  C~2SDf      
2016 11  04.43686  01 49 25.349  +14 59 53.26  24.0w 14UK228   568  C~2SDf      
2017 08  25.58743  01 59 03.875  +15 58 00.51  23.7w 14UK228   568  C~2SDf      
2017 08  30.60899  01 58 53.262  +15 57 36.03  24.0w 14UK228   568  C~2SDf      

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     0.03       0.00    -0.02
     2   0.0001     -0.72    -0.06       0.27    -0.01
     3   0.0655   -673.51    -0.12     121.47     0.22
     4   0.0656   -675.28    -0.05     121.55     0.07
     5   0.0683   -716.55    -0.00     126.00     0.03
     6   0.0684   -718.54     0.04     126.06    -0.16
     7   0.1643  -2721.24    -0.05     252.86    -0.12
     8   0.2245  -4228.83     0.17     290.08    -0.13
     9   0.2300  -4364.23     0.11     291.78    -0.06
    10   0.3200  -6259.92     0.19     278.92     0.01
    11   0.3224  -6298.39    -0.08     277.51    -0.09
    12   0.3224  -6298.61    -0.07     277.70     0.10
    13   0.3225  -6299.02    -0.17     277.67     0.08
    14   0.3881  -6986.05     0.09     230.24     0.10
    15   0.3911  -6999.87    -0.06     227.50    -0.05
    16   0.3911  -6999.67     0.20     227.28    -0.25
    17   0.3990  -7027.66     0.03     220.43    -0.01
    18   0.3991  -7028.07     0.03     220.29    -0.05
    19   0.3994  -7028.92    -0.13     220.16     0.00
    20   0.4017  -7034.51    -0.08     217.99    -0.03
    21   0.4018  -7034.77    -0.03     217.99     0.05
    22   0.4019  -7035.20    -0.00     217.71    -0.08
    23   0.9610   4774.94     0.08     502.83    -0.09
    24   0.9611   4775.15     0.02     503.14    -0.06
    25   0.9613   4775.37    -0.01     503.45    -0.02
    26   1.0402   4429.56    -0.01     665.01    -0.02
    27   1.0405   4427.28     0.01     665.45     0.00
    28   1.0566   4228.19     0.02     695.74     0.09
    29   1.0569   4223.97    -0.07     696.24    -0.01
    30   1.1087   3338.40     0.02     781.65     0.00
    31   1.1088   3335.94    -0.03     781.87     0.03
    32   1.1225   3048.90    -0.01     800.95    -0.00
    33   1.2013   1147.83     0.24     876.25    -0.07
    34   1.2014   1144.42    -0.01     876.54     0.13
    35   1.2016   1141.34     0.03     876.59     0.09
    36   1.2046   1064.99    -0.10     878.19     0.03
    37   1.2101    925.04    -0.02     880.95     0.05
    38   1.2805   -755.05     0.02     887.93    -0.12
    39   1.2809   -763.54    -0.11     888.15     0.13
    40   1.2834   -815.49    -0.07     887.42     0.08
    41   1.2838   -825.12     0.07     887.54     0.25
    42   1.5271  -1242.81     0.00     681.96    -0.02
    43   2.3269   3180.00    -0.06    1468.01     0.13
    44   3.2385   9970.22     0.01    2106.57    -0.08
    45   3.2387   9966.41    -0.02    2106.63    -0.06
    46   4.0440  19066.40     0.03    2486.60    -0.08
    47   4.0578  18912.89    -0.01    2515.84    -0.01

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.

14UK228    quality flag:2

Type:       SCATNEAR  SCATNEAR  8:3EEEEE

axisobj        58.740    58.764    58.715
ecceobj         0.358     0.359     0.358
incobj          7.661     7.661     7.661
qmin           36.700    36.621    36.891
qmax           80.612    80.605    80.322
amean          57.870    57.938    57.901
amin           57.054    57.092    57.057
amax           58.954    58.973    58.908
emean           0.351     0.352     0.350
emin            0.335     0.337     0.335
emax            0.368     0.369     0.364
imean           8.381     8.210     8.291
imin            7.782     7.612     7.918
imax            9.088     8.922     8.865
excite_mean     0.380     0.380     0.379
fracstop        1.000     1.000     1.000
cjmean          3.089     3.089     3.091

libcent 0      -180.0    -180.0     180.8
libamp  0      -180.0    -180.0     165.1
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       183.0     186.8     184.5
kozaiamp        180.0     180.0     180.0