Orbit Fit and Astrometric record for 14UD225

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: 14UD225   
# Created Mon Dec 18 02:38:06 2017
# Orbit generated from Bernstein formalism
# Fitting   62 observations of   62
# Arc:  15.21y
# First observation: 2000/09/21
#  Last observation: 2015/12/07
Preliminary a, adot, b, bdot, g, gdot:
   0.000055   0.022822  -0.000034   0.001331   0.025332   0.000000
# Chi-squared of fit:    17.21 DOF:  118 RMS:  0.09
# Min/Max residuals:    -0.27    0.30
# Exact a, adot, b, bdot, g, gdot:
  1.455371E-05  2.312929E-02  2.115894E-06  1.346066E-03  2.404201E-02  3.085345E-03
# Covariance matrix:
  7.0786E-13 -1.2933E-13  1.4846E-14 -5.5972E-15 -7.3542E-14 -2.4509E-13
 -1.2933E-13  4.1454E-14 -6.0724E-15  2.2928E-15  3.9940E-14  1.0004E-13
  1.4846E-14 -6.0724E-15  4.6812E-13 -3.4706E-14 -6.3173E-15 -1.5659E-14
 -5.5972E-15  2.2928E-15 -3.4706E-14  2.7958E-15  2.4097E-15  5.9124E-15
 -7.3542E-14  3.9940E-14 -6.3173E-15  2.4097E-15  1.1336E-13  1.0252E-13
 -2.4509E-13  1.0004E-13 -1.5659E-14  5.9124E-15  1.0252E-13  2.5798E-13
#      lat0       lon0       xBary       yBary       zBary        JD0
    1.539642    7.855202    0.164607    0.026273   -0.984593  2451808.827753
# Heliocentric elements and errors
Epoch:              2451800.5000  =  2000/09/13
Mean Anomaly:           72.19242 +/-     0.011
Argument of Peri:      297.56248 +/-     0.016
Long of Asc Node:      343.41875 +/-     0.001
Inclination:             3.66177 +/-     0.000
Eccentricity:         0.12762376 +/-    0.0000
Semi-Major Axis:     43.60767182 +/-    0.0021
Time of Perihelion: 2430707.8146 +/-       3.0
Perihelion:          38.04229684 +/-    0.0020
Aphelion:            49.17304679 +/-    0.0025
Period (y)              287.9735 +/-      0.02
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           42.19223104 +/-    0.0006
Ecliptic Y            5.65919108 +/-    0.0001
Ecliptic Z            1.11767563 +/-    0.0000
Ecliptic XDOT        -0.00002357 +/-    0.0000
Ecliptic YDOT         0.00266171 +/-    0.0000
Ecliptic ZDOT         0.00016283 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   42.58473908 +/-    0.0006
Geocenter to KBO     41.59385787 +/-    0.0006
# Hcoef:  6.78

The following table shows the complete astrometric record for 14UD225. 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 (14UD225) followed by the observatory code and reference code for the source of the astrometry.

2000 09  21.32701  00 26 25.13   +04 31 51.1   23.0R 14UD225   695  C~25no      
2000 09  21.41517  00 26 24.71   +04 31 48.7         14UD225   695  C~25no      
2008 10  28.341894 01 01 12.49   +08 49 28.7   22.5V 14UD225   645  C~25no      
2008 10  28.342723 01 01 12.49   +08 49 28.6   23.6V 14UD225   645  C~25no      
2008 10  28.345211 01 01 12.49   +08 49 28.7   23.3V 14UD225   645  C~25no      
2008 11  01.360599 01 00 56.01   +08 47 45.3   23.4V 14UD225   645  C~25no      
2008 11  01.361428 01 00 56.01   +08 47 45.3   21.7V 14UD225   645  C~25no      
2008 11  01.363916 01 00 56.02   +08 47 45.3   24.7V 14UD225   645  C~25no      
2013 08  08.53429  01 28 55.033  +11 53 13.70  23.3r 14UD225   568  C~25no      
2013 09  01.51405  01 28 04.644  +11 49 47.31  23.2r 14UD225   568  C~25no      
2013 09  01.55288  01 28 04.533  +11 49 46.81  23.1r 14UD225   568  C~25no      
2013 09  02.49556  01 28 01.730  +11 49 33.46  23.1r 14UD225   568  C~25no      
2013 09  02.54696  01 28 01.571  +11 49 32.72  23.1r 14UD225   568  C~25no      
2013 09  29.51508  01 26 21.879  +11 40 57.50  23.2r 14UD225   568  C~25no      
2013 10  03.49165  01 26 04.871  +11 39 24.38  23.1r 14UD225   568  C~25no      
2013 10  04.58571  01 26 00.118  +11 38 58.04  22.9r 14UD225   568  C~25no      
2013 10  09.38918  01 25 39.068  +11 37 00.66  23.1r 14UD225   568  C~25no      
2013 10  29.45275  01 24 10.398  +11 28 28.69  23.1r 14UD225   568  C~25no      
2013 10  30.36505  01 24 06.472  +11 28 05.47  23.1r 14UD225   568  C~25no      
2013 10  31.35588  01 24 02.230  +11 27 40.11  23.0r 14UD225   568  C~25no      
2013 11  01.30170  01 23 58.210  +11 27 16.09  23.1r 14UD225   568  C~25no      
2013 11  01.34074  01 23 58.039  +11 27 15.10  23.0r 14UD225   568  C~25no      
2013 11  01.42897  01 23 57.662  +11 27 12.83  22.9r 14UD225   568  C~25no      
2013 11  27.35126  01 22 21.137  +11 17 12.56  23.1r 14UD225   568  C~25no      
2013 12  03.29403  01 22 04.190  +11 15 20.23  23.3r 14UD225   568  C~25no      
2013 12  04.33911  01 22 01.448  +11 15 01.78  22.9r 14UD225   568  C~25no      
2013 12  29.23399  01 21 21.660  +11 10 00.34  23.1r 14UD225   568  C~25no      
2014 07  25.50098  01 33 32.855  +12 22 44.86  22.9r 14UD225   568  C~25no      
2014 07  25.54031  01 33 32.853  +12 22 45.08  22.8r 14UD225   568  C~25no      
2014 07  25.58207  01 33 32.857  +12 22 45.29  23.0r 14UD225   568  C~25no      
2014 08  23.54089  01 33 00.878  +12 21 36.84  23.1r 14UD225   568  C~25no      
2014 08  23.58776  01 33 00.765  +12 21 36.45  23.0r 14UD225   568  C~25no      
2014 08  25.54619  01 32 56.242  +12 21 17.64  24.7u 14UD225   568  C~25no      
2014 08  25.55046  01 32 56.241  +12 21 17.44  25.4u 14UD225   568  C~25no      
2014 08  27.43321  01 32 51.644  +12 20 57.49  23.0r 14UD225   568  C~25no      
2014 08  27.52904  01 32 51.394  +12 20 56.56  23.0r 14UD225   568  C~25no      
2014 09  18.36363  01 31 41.682  +12 15 20.49  23.0r 14UD225   568  C~25no      
2014 09  18.40832  01 31 41.507  +12 15 19.61  23.1r 14UD225   568  C~25no      
2014 09  23.44649  01 31 21.902  +12 13 38.07  22.9r 14UD225   568  C~25no      
2014 10  22.40934  01 29 16.548  +12 02 08.38  23.1r 14UD225   568  C~25no      
2014 10  22.44880  01 29 16.369  +12 02 07.35  23.0r 14UD225   568  C~25no      
2014 10  22.48819  01 29 16.192  +12 02 06.33  23.1r 14UD225   568  C~25no      
2014 10  23.40059  01 29 12.149  +12 01 43.13  23.0r 14UD225   568  C~25no      
2014 10  25.26507  01 29 03.902  +12 00 55.47  23.1r 14UD225   568  C~25no      
2014 11  19.21279  01 27 21.868  +11 50 43.75  23.2r 14UD225   568  C~25no      
2014 11  19.34560  01 27 21.380  +11 50 40.84  23.1r 14UD225   568  C~25no      
2014 11  21.19245  01 27 14.834  +11 49 59.53  23.2r 14UD225   568  C~25no      
2014 11  21.19865  01 27 14.808  +11 49 59.62  23.0r 14UD225   568  C~25no      
2014 11  21.36159  01 27 14.223  +11 49 56.01  23.0r 14UD225   568  C~25no      
2015 01  28.24775  01 26 10.745  +11 40 39.89  22.9r 14UD225   568  C~25no      
2015 02  18.23136  01 27 09.875  +11 45 28.20  23.3r 14UD225   568  C~25no      
2015 09  15.51502  01 36 25.800  +12 46 04.46  23.4w 14UD225   568  C~25no      
2015 09  15.51940  01 36 25.786  +12 46 04.42  23.3w 14UD225   568  C~25no      
2015 09  15.57438  01 36 25.582  +12 46 03.37  23.3w 14UD225   568  C~25no      
2015 09  15.57846  01 36 25.571  +12 46 03.31  23.4w 14UD225   568  C~25no      
2015 10  09.44415  01 34 48.770  +12 37 38.42  23.3w 14UD225   568  C~25no      
2015 10  09.48680  01 34 48.580  +12 37 37.41  23.3w 14UD225   568  C~25no      
2015 10  13.48307  01 34 30.912  +12 36 00.75        14UD225   568  C~25no      
2015 10  13.49246  01 34 30.870  +12 36 00.59        14UD225   568  C~25no      
2015 10  13.54938  01 34 30.612  +12 35 59.11        14UD225   568  C~25no      
2015 12  07.44090  01 30 57.484  +12 14 47.09  23.4w 14UD225   568  C~25no      
2015 12  07.45744  01 30 57.442  +12 14 46.74        14UD225   568  C~25no      

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     0.14       0.00    -0.25
  2   0.0002     -6.72    -0.23       0.28    -0.11
  3   8.1013  34983.04     0.03    2203.72     0.14
  4   8.1013  34983.00     0.05    2203.63     0.04
  5   8.1014  34983.04     0.26    2203.72     0.14
  6   8.1123  34710.20    -0.07    2200.35     0.20
  7   8.1123  34710.20    -0.01    2200.35     0.20
  8   8.1124  34710.34     0.30    2200.29     0.15
  9  12.8794  63415.52     0.06    3465.30    -0.03
 10  12.9451  62579.82    -0.07    3539.74    -0.04
 11  12.9452  62577.96     0.04    3539.86    -0.04
 12  12.9478  62530.79    -0.06    3542.19    -0.03
 13  12.9479  62528.12    -0.07    3542.34    -0.03
 14  13.0217  60837.95    -0.27    3587.07    -0.03
 15  13.0326  60548.22    -0.08    3589.87     0.06
 16  13.0356  60467.16    -0.15    3590.35    -0.05
 17  13.0488  60108.08    -0.03    3591.88    -0.03
 18  13.1037  58591.85    -0.02    3582.58    -0.05
 19  13.1062  58524.62    -0.08    3581.69     0.09
 20  13.1089  58451.88    -0.13    3580.46     0.01
 21  13.1115  58382.97    -0.07    3579.31     0.03
 22  13.1116  58380.05    -0.10    3579.30     0.04
 23  13.1118  58373.58    -0.05    3579.17    -0.01
 24  13.1828  56712.79    -0.04    3530.30    -0.04
 25  13.1991  56419.09     0.08    3515.29    -0.04
 26  13.2019  56371.48    -0.03    3512.60     0.00
 27  13.2701  55667.88    -0.01    3441.33    -0.12
 28  13.8403  68307.40    -0.07    3687.99     0.03
 29  13.8404  68307.46    -0.11    3688.22     0.07
 30  13.8405  68307.60    -0.06    3688.40     0.06
 31  13.9198  67795.21     0.00    3794.87     0.03
 32  13.9199  67793.34    -0.05    3795.11     0.09
 33  13.9253  67717.31    -0.02    3801.18     0.25
 34  13.9253  67717.21     0.06    3800.99     0.05
 35  13.9305  67639.62     0.05    3806.35    -0.05
 36  13.9307  67635.47     0.06    3806.79     0.07
 37  13.9905  66447.56     0.03    3855.64     0.00
 38  13.9906  66444.57    -0.03    3855.73    -0.00
 39  14.0044  66108.38    -0.04    3862.77    -0.07
 40  14.0837  63949.52     0.01    3870.63    -0.11
 41  14.0838  63946.43    -0.01    3870.60    -0.13
 42  14.0839  63943.37     0.00    3870.57    -0.15
 43  14.0864  63873.56     0.07    3869.96    -0.07
 44  14.0915  63731.06     0.03    3868.41    -0.07
 45  14.1599  61963.30    -0.01    3829.27    -0.02
 46  14.1602  61954.87     0.02    3829.10     0.04
 47  14.1653  61840.90    -0.03    3824.69    -0.15
 48  14.1653  61840.54    -0.00    3824.92     0.09
 49  14.1657  61830.39    -0.06    3824.60     0.07
 50  14.3516  60665.37    -0.06    3631.08    -0.09
 51  14.4090  61659.76    -0.03    3587.31     0.02
 52  14.9820  71501.46     0.07    4134.53    -0.02
 53  14.9820  71501.23     0.12    4134.57     0.01
 54  14.9822  71497.68     0.05    4134.63    -0.05
 55  14.9822  71497.49     0.12    4134.63    -0.06
 56  15.0475  69817.31     0.10    4158.40    -0.01
 57  15.0477  69814.01     0.12    4158.43    -0.00
 58  15.0586  69506.38     0.11    4158.60     0.03
 59  15.0586  69505.68     0.15    4158.67     0.10
 60  15.0588  69501.16     0.10    4158.61     0.03
 61  15.2091  65767.50    -0.03    4063.64    -0.06
 62  15.2091  65766.73    -0.04    4063.52    -0.12

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.

14UD225    quality flag:3

Type:      CLASSICAL CLASSICAL CLASSICAL

axisobj        43.685    43.691    43.679
ecceobj         0.129     0.129     0.129
incobj          3.657     3.657     3.657
qmin           37.089    37.110    37.074
qmax           50.081    50.024    49.988
amean          43.409    43.415    43.404
amin           43.051    43.051    43.027
amax           43.804    43.800    43.793
emean           0.122     0.122     0.122
emin            0.097     0.097     0.096
emax            0.144     0.142     0.142
imean           4.800     4.790     4.808
imin            3.373     3.373     3.372
imax            5.855     5.832     5.872
excite_mean     0.148     0.148     0.148
fracstop        1.000     1.000     1.000
cjmean          3.067     3.068     3.067

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       178.3     178.3     178.2
kozaiamp        180.0     180.0     180.0