Orbit Fit and Astrometric record for 14YF50

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: 14YF50    
# Created Sat Dec 16 02:38:09 2017
# Orbit generated from Bernstein formalism
# Fitting   43 observations of   44
# Arc:   4.16y
# First observation: 2011/02/21
#  Last observation: 2015/04/21
Preliminary a, adot, b, bdot, g, gdot:
  -0.000107   0.035829  -0.000070   0.005183   0.029369   0.000000
# Chi-squared of fit:    17.71 DOF:   80 RMS:  0.11
# Min/Max residuals:    -0.29    0.37
# Exact a, adot, b, bdot, g, gdot:
  2.057331E-05  3.529315E-02  3.244117E-06  5.051800E-03  2.795767E-02 -5.143817E-03
# Covariance matrix:
  3.5841E-13 -2.4512E-13  1.6217E-14 -2.5059E-14 -1.1260E-13 -1.0830E-12
 -2.4512E-13  2.8842E-13 -2.3995E-14  3.7315E-14  1.6289E-13  1.6218E-12
  1.6217E-14 -2.3995E-14  2.4201E-13 -7.0842E-14 -1.9772E-14 -1.4696E-13
 -2.5059E-14  3.7315E-14 -7.0842E-14  2.7310E-14  2.6741E-14  2.2781E-13
 -1.1260E-13  1.6289E-13 -1.9772E-14  2.6741E-14  1.9677E-13  1.0090E-12
 -1.0830E-12  1.6218E-12 -1.4696E-13  2.2781E-13  1.0090E-12  9.8736E-12
#      lat0       lon0       xBary       yBary       zBary        JD0
   16.853674  136.113828   -0.275450    0.276514   -0.912789  2455613.789496
# Heliocentric elements and errors
Epoch:              2455610.5000  =  2011/02/18
Mean Anomaly:          354.57874 +/-     0.003
Argument of Peri:       86.90699 +/-     0.013
Long of Asc Node:       72.80173 +/-     0.001
Inclination:            18.19158 +/-     0.000
Eccentricity:         0.55064742 +/-    0.0001
Semi-Major Axis:     79.51757112 +/-    0.0133
Time of Perihelion: 2459510.7368 +/-       2.2
Perihelion:          35.73142594 +/-    0.0086
Aphelion:           123.30371631 +/-    0.0215
Period (y)              709.0924 +/-      0.18
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -25.54637396 +/-    0.0004
Ecliptic Y           24.19230890 +/-    0.0004
Ecliptic Z           10.37036891 +/-    0.0002
Ecliptic XDOT        -0.00194638 +/-    0.0000
Ecliptic YDOT        -0.00291853 +/-    0.0000
Ecliptic ZDOT         0.00032744 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   36.68009793 +/-    0.0004
Geocenter to KBO     35.76836410 +/-    0.0006
# Hcoef:  5.37

The following table shows the complete astrometric record for 14YF50. 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 (14YF50) followed by the observatory code and reference code for the source of the astrometry.

2011 02  21.28873  09 37 41.833  +31 59 57.86  20.6r 14YF50    F51  C~1vXz      
2011 02  21.30048  09 37 41.777  +31 59 58.08  20.8r 14YF50    F51  C~1vXz      
2011 02  21.31376  09 37 41.700  +31 59 58.42  20.4i 14YF50    F51  C~1vXz      
2011 02  21.32633  09 37 41.626  +31 59 58.73  20.4i 14YF50    F51  C~1vXz      
2013 02  13.36349  09 57 17.734  +31 01 27.11  20.9w 14YF50    F51  C~1vXz      
2013 02  13.37730  09 57 17.648  +31 01 27.50  20.8w 14YF50    F51  C~1vXz      
2013 02  13.39110  09 57 17.560  +31 01 27.92  20.8w 14YF50    F51  C~1vXz      
2013 02  13.40500  09 57 17.479  +31 01 28.29  20.8w 14YF50    F51  C~1vXz      
2013 02  21.35333  09 56 30.954  +31 05 04.59  20.4i 14YF50    F51  C~1vXz      
2013 02  21.36922  09 56 30.856  +31 05 04.92  20.8i 14YF50    F51  C~1vXz      
2013 02  21.38195  09 56 30.784  +31 05 05.29  20.7r 14YF50    F51  C~1vXz      
2013 02  21.39377  09 56 30.702  +31 05 05.59  20.8r 14YF50    F51  C~1vXz      
2014 02  10.54315  10 07 00.748  +30 27 45.80  20.4i 14YF50    F51  C~1vXz      
2014 02  10.55539  10 07 00.677  +30 27 46.18  20.3i 14YF50    F51  C~1vXz      
2014 02  10.56769  10 07 00.606  +30 27 46.61  20.3i 14YF50    F51  C~1vXz      
2014 02  10.57950  10 07 00.529  +30 27 47.00  20.3i 14YF50    F51  C~1vXz      
2014 03  25.25098  10 03 08.351  +30 41 26.12  21.0w 14YF50    F51  C~1vXz      
2014 03  25.26289  10 03 08.295  +30 41 26.21  20.9w 14YF50    F51  C~1vXz      
2014 03  25.27486  10 03 08.243  +30 41 26.24  20.8w 14YF50    F51  C~1vXz      
2014 03  25.28693  10 03 08.190  +30 41 26.26  20.8w 14YF50    F51  C~1vXz      
2014 12  25.46295  10 19 45.469  +29 21 14.21  20.9w 14YF50    F51  C~1vXz      
2014 12  25.46360  10 19 45.437  +29 21 14.09  21.1w 14YF50    F51  C~1vXz      
2014 12  25.47530  10 19 45.441  +29 21 14.92  20.9w 14YF50    F51  C~1vXz      
2014 12  25.47596  10 19 45.444  +29 21 14.59  20.9w 14YF50    F51  C~1vXz      
2014 12  25.48763  10 19 45.417  +29 21 14.91  20.9w 14YF50    F51  C~1vXz      
2014 12  25.48830  10 19 45.406  +29 21 14.95  21.0w 14YF50    F51  C~1vXz      
2014 12  25.49995  10 19 45.377  +29 21 15.36  21.0w 14YF50    F51  C~1vXz      
2014 12  25.50061  10 19 45.361  +29 21 15.32  21.0w 14YF50    F51  C~1vXz      
2014 12  27.46227  10 19 40.902  +29 22 34.27  20.8w 14YF50    F51  C~1vXz      
2014 12  27.47458  10 19 40.872  +29 22 34.55  20.9w 14YF50    F51  C~1vXz      
2014 12  27.48691  10 19 40.839  +29 22 35.17  21.0w 14YF50    F51  C~1vXz      
2014 12  27.49918  10 19 40.818  +29 22 35.47  20.9w 14YF50    F51  C~1vXz      
2015 01  27.56338  10 17 40.709  +29 44 01.58  20.7w 14YF50    F51  C~1vXz      
2015 01  27.57435  10 17 40.654  +29 44 02.00  20.8w 14YF50    F51  C~1vXz      
2015 01  27.58534  10 17 40.597  +29 44 02.48  20.8w 14YF50    F51  C~1vXz      
2015 01  27.59635  10 17 40.541  +29 44 02.93  20.8w 14YF50    F51  C~1vXz      
2015 04  20.32627  10 10 59.609  +30 05 39.54  21.1w 14YF50    F51  C~1vXz      
2015 04  20.33912  10 10 59.575  +30 05 39.16  21.0w 14YF50    F51  C~1vXz      
2015 04  20.35196  10 10 59.556  +30 05 38.99  21.0w 14YF50    F51  C~1vXz      
2015 04  20.36494  10 10 59.529  +30 05 38.86  20.8w 14YF50    F51  C~1vXz      
2015 04  21.35010  10 10 57.366  +30 05 23.40  21.2w 14YF50    F51  C~1vXz      
2015 04  21.36221  10 10 57.331  +30 05 23.12  21.1w 14YF50    F51  C~1vXz      
2015 04  21.37429  10 10 57.282  +30 05 23.10  21.1w 14YF50    F51  C~1vXz      
2015 04  21.38774  10 10 57.280  +30 05 22.82  21.3w 14YF50    F51  C~1vXz      

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    -0.13       0.00    -0.08
  2   0.0000     -0.74     0.05      -0.03    -0.06
  3   0.0001     -1.78     0.04      -0.04    -0.01
  4   0.0001     -2.77     0.04      -0.07     0.03
  5   1.9797  15322.08     0.08    2127.69     0.07
  6   1.9797  15320.90     0.04    2127.63     0.03
  7   1.9797  15319.69    -0.03    2127.59     0.01
  8   1.9798  15318.58     0.01    2127.54    -0.02
  9   2.0015  14679.95     0.05    2100.82    -0.01
 10   2.0016  14678.65     0.03    2100.65    -0.09
 11   2.0016  14677.65     0.05    2100.64    -0.02
 12   2.0017  14676.55    -0.09    2100.52    -0.08
 13   2.9713  23100.49    -0.04    3205.82     0.13
 14   2.9713  23099.48    -0.02    3205.81     0.12
 15   2.9713  23098.45    -0.03    3205.83     0.15
 16   2.9714  23097.37    -0.13    3205.79     0.12
 17   3.0882  19985.36    -0.01    2766.45    -0.02
 18   3.0882  19984.66    -0.05    2766.25     0.01
 19   3.0883  19984.02    -0.02    2766.01     0.01
 20   3.0883  19983.38     0.02    2765.76    -0.00
 21   3.8417  34013.82     0.03    3686.85     0.37
 22   3.8417  34013.49    -0.28    3686.56     0.06
 23   3.8417  34013.17 (  -0.07)   3687.34 (   0.56)
 24   3.8417  34013.35     0.14    3687.05     0.26
 25   3.8417  34012.89     0.20    3687.20     0.11
 26   3.8418  34012.73     0.08    3687.17     0.07
 27   3.8418  34012.20     0.07    3687.38     0.00
 28   3.8418  34012.03    -0.08    3687.26    -0.14
 29   3.8472  33923.44     0.03    3734.49     0.09
 30   3.8472  33922.95     0.13    3734.58    -0.11
 31   3.8472  33922.28     0.05    3734.96    -0.02
 32   3.8473  33921.90     0.25    3735.12    -0.15
 33   3.9323  31908.27    -0.21    4241.48    -0.10
 34   3.9323  31907.43    -0.18    4241.56    -0.11
 35   3.9324  31906.53    -0.20    4241.68    -0.06
 36   3.9324  31905.66    -0.20    4241.78    -0.04
 37   4.1589  26515.90     0.01    3245.03     0.01
 38   4.1589  26515.65     0.04    3244.50    -0.18
 39   4.1590  26515.49     0.16    3244.24    -0.09
 40   4.1590  26515.22     0.17    3243.98    -0.01
 41   4.1617  26495.54     0.11    3218.18    -0.02
 42   4.1617  26495.23     0.05    3217.74    -0.14
 43   4.1618  26494.65    -0.29    3217.46    -0.09
 44   4.1618  26494.74     0.07    3217.19     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.

14YF50    quality flag:3

Type:       SCATNEAR  SCATNEAR  SCATNEAR

axisobj        80.000    80.035    79.965
ecceobj         0.553     0.553     0.552
incobj         18.171    18.171    18.171
qmin           34.199    34.095    34.319
qmax          128.772   128.561   128.612
amean          80.029    80.029    80.029
amin           78.853    78.814    78.850
amax           81.856    81.898    81.860
emean           0.559     0.559     0.558
emin            0.545     0.545     0.545
emax            0.574     0.574     0.572
imean          15.943    15.886    16.047
imin           15.068    14.855    15.366
imax           16.987    16.987    16.987
excite_mean     0.623     0.623     0.623
fracstop        1.000     1.000     1.000
cjmean          2.975     2.975     2.975

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       136.8     131.9     143.7
kozaiamp         55.9      51.5      62.6