Orbit Fit and Astrometric record for 14YJ50

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: 14YJ50    
# Created Sat Oct 21 01:38:32 2017
# Orbit generated from Bernstein formalism
# Fitting   34 observations of   35
# Arc:   4.15y
# First observation: 2011/01/30
#  Last observation: 2015/03/24
Preliminary a, adot, b, bdot, g, gdot:
  -0.000221   0.033758   0.000032  -0.000930   0.029663   0.000000
# Chi-squared of fit:    28.00 DOF:   62 RMS:  0.16
# Min/Max residuals:    -0.64    0.32
# Exact a, adot, b, bdot, g, gdot:
  1.797580E-05  3.440403E-02 -3.365146E-07 -9.528936E-04  3.022260E-02  4.734247E-03
# Covariance matrix:
  3.3517E-13 -2.4962E-13 -4.1018E-15  5.4388E-15 -1.1051E-13 -1.2358E-12
 -2.4962E-13  3.2890E-13  6.2563E-15 -9.0337E-15  1.6375E-13  2.0405E-12
 -4.1018E-15  6.2563E-15  2.2224E-13 -6.4477E-14  7.6736E-15  4.1113E-14
  5.4388E-15 -9.0337E-15 -6.4477E-14  2.3594E-14 -4.2829E-15 -6.0411E-14
 -1.1051E-13  1.6375E-13  7.6736E-15 -4.2829E-15  2.4509E-13  1.0693E-12
 -1.2358E-12  2.0405E-12  4.1113E-14 -6.0411E-14  1.0693E-12  1.3630E-11
#      lat0       lon0       xBary       yBary       zBary        JD0
    7.305420  114.762711   -0.260280    0.121220   -0.945527  2455591.791276
# Heliocentric elements and errors
Epoch:              2455590.5000  =  2011/01/29
Mean Anomaly:           37.88631 +/-     0.011
Argument of Peri:       47.71949 +/-     0.021
Long of Asc Node:       12.24954 +/-     0.002
Inclination:             7.28492 +/-     0.000
Eccentricity:         0.20013698 +/-    0.0001
Semi-Major Axis:     39.50897187 +/-    0.0029
Time of Perihelion: 2446044.4915 +/-       2.6
Perihelion:          31.60176570 +/-    0.0047
Aphelion:            47.41617804 +/-    0.0053
Period (y)              248.3429 +/-      0.03
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -14.37873105 +/-    0.0002
Ecliptic Y           30.55732661 +/-    0.0005
Ecliptic Z            4.20736470 +/-    0.0001
Ecliptic XDOT        -0.00301393 +/-    0.0000
Ecliptic YDOT        -0.00090311 +/-    0.0000
Ecliptic ZDOT        -0.00003107 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   34.03233806 +/-    0.0004
Geocenter to KBO     33.08782524 +/-    0.0005
# Hcoef:  6.73

The following table shows the complete astrometric record for 14YJ50. 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 (14YJ50) followed by the observatory code and reference code for the source of the astrometry.

2011 01  30.29051  07 52 41.025  +28 21 18.46  21.9w 14YJ50    F51  C~1vXz      
2011 01  30.30506  07 52 40.925  +28 21 18.56  21.9w 14YJ50    F51  C~1vXz      
2011 01  30.32015  07 52 40.826  +28 21 18.80  21.9w 14YJ50    F51  C~1vXz      
2011 01  30.33449  07 52 40.740  +28 21 18.91  21.9w 14YJ50    F51  C~1vXz      
2012 01  25.53001  08 01 53.986  +27 53 32.58  21.5r 14YJ50    F51  C~1vXz      
2012 01  25.54322  08 01 53.887  +27 53 32.91  21.3i 14YJ50    F51  C~1vXz      
2012 01  25.55580  08 01 53.841  +27 53 32.23  21.4i 14YJ50    F51  C~1vXz      
2013 01  16.49970  08 11 19.290  +27 22 37.31  22.1w 14YJ50    F51  C~1vXz      
2013 01  16.51417  08 11 19.191  +27 22 37.61  22.0w 14YJ50    F51  C~1vXz      
2013 01  16.52862  08 11 19.089  +27 22 37.92  22.1w 14YJ50    F51  C~1vXz      
2013 01  16.54314  08 11 18.998  +27 22 38.06  22.1w 14YJ50    F51  C~1vXz      
2013 05  11.26360  08 06 27.501  +27 18 16.59  22.2w 14YJ50    F51  C~1vXz      
2013 05  11.26891  08 06 27.507  +27 18 16.33  22.5w 14YJ50    F51  C~1vXz      
2013 05  11.27418  08 06 27.533  +27 18 16.24  22.2w 14YJ50    F51  C~1vXz      
2013 10  10.60268  08 23 40.219  +26 25 30.18  22.4w 14YJ50    F51  C~1vXz      
2013 10  10.60731  08 23 40.223  +26 25 30.80  22.3w 14YJ50    F51  C~1vXz      
2013 10  10.61199  08 23 40.244  +26 25 30.80  22.3w 14YJ50    F51  C~1vXz      
2014 03  02.24781  08 15 17.176  +27 02 30.14  22.4w 14YJ50    F51  C~1vXz      
2014 03  02.25924  08 15 17.089  +27 02 30.29  22.3w 14YJ50    F51  C~1vXz      
2014 03  02.27073  08 15 17.085  +27 02 30.12  22.2w 14YJ50    F51  C~1vY0      
2014 12  29.56331  08 29 42.515  +26 13 43.83  22.0w 14YJ50    F51  C~1vY0      
2014 12  29.57513  08 29 42.455  +26 13 44.05  22.0w 14YJ50    F51  C~1vY0      
2014 12  29.58690  08 29 42.390  +26 13 44.38  22.0w 14YJ50    F51  C~1vY0      
2014 12  29.59872  08 29 42.309  +26 13 44.74  22.0w 14YJ50    F51  C~1vY0      
2015 01  24.38361  08 27 05.568  +26 23 21.51  22.0w 14YJ50    F51  C~1vY0      
2015 01  24.39521  08 27 05.485  +26 23 21.36  21.9w 14YJ50    F51  C~1vY0      
2015 01  24.40682  08 27 05.430  +26 23 22.16  22.1w 14YJ50    F51  C~1vY0      
2015 01  27.51821  08 26 45.577  +26 24 23.23  22.2w 14YJ50    F51  C~1vY0      
2015 01  27.52982  08 26 45.484  +26 24 23.73  22.5w 14YJ50    F51  C~1vY0      
2015 01  27.54146  08 26 45.399  +26 24 23.64  22.1w 14YJ50    F51  C~1vY0      
2015 01  27.55313  08 26 45.308  +26 24 24.00  22.2w 14YJ50    F51  C~1vY0      
2015 03  24.36765  08 22 07.465  +26 32 26.75  22.4w 14YJ50    F51  C~1vY0      
2015 03  24.38027  08 22 07.441  +26 32 26.86  22.5w 14YJ50    F51  C~1vY0      
2015 03  24.39281  08 22 07.413  +26 32 26.89  22.4w 14YJ50    F51  C~1vY0      
2015 03  24.40537  08 22 07.368  +26 32 26.57  22.7w 14YJ50    F51  C~1vY0      

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     0.01       0.00    -0.03
  2   0.0000     -1.32    -0.04      -0.15    -0.13
  3   0.0001     -2.64    -0.05      -0.16    -0.08
  4   0.0001     -3.78     0.06      -0.27    -0.13
  5   0.9863   7503.41     0.08    -179.56     0.21
  6   0.9863   7502.06    -0.09    -179.51     0.31
  7   0.9864   7501.60 (   0.58)   -180.30 (  -0.44)
  8   1.9636  15263.61     0.07    -358.98    -0.01
  9   1.9637  15262.25     0.02    -358.99     0.00
 10   1.9637  15260.85    -0.07    -359.00     0.02
 11   1.9637  15259.63     0.02    -359.13    -0.10
 12   2.2778  11514.52     0.19   -1476.90     0.08
 13   2.2778  11514.66     0.03   -1477.13    -0.10
 14   2.2778  11515.01     0.10   -1477.15    -0.04
 15   2.6949  25811.74     0.26   -1331.59    -0.36
 16   2.6949  25811.63    -0.04   -1330.97     0.20
 17   2.6949  25811.91     0.04   -1330.90     0.21
 18   3.0854  18652.65    -0.19    -804.59     0.10
 19   3.0855  18651.47    -0.64    -804.71     0.08
 20   3.0855  18651.46     0.07    -804.89     0.02
 21   3.9131  30793.22    -0.01    -764.59    -0.05
 22   3.9132  30792.36     0.09    -764.59    -0.08
 23   3.9132  30791.41     0.08    -764.50    -0.02
 24   3.9132  30790.24    -0.13    -764.44     0.01
 25   3.9838  28559.94    -0.17    -752.89     0.03
 26   3.9839  28558.88    -0.17    -753.32    -0.37
 27   3.9839  28557.94    -0.05    -752.73     0.25
 28   3.9924  28279.26     0.32    -762.12    -0.01
 29   3.9924  28277.90     0.01    -761.95     0.20
 30   3.9925  28276.80    -0.04    -762.33    -0.13
 31   3.9925  28275.50    -0.28    -762.30    -0.05
 32   4.1453  24482.42     0.08   -1236.52    -0.12
 33   4.1454  24482.08     0.16   -1236.50     0.07
 34   4.1454  24481.70     0.21   -1236.56     0.17
 35   4.1454  24481.19     0.12   -1237.02    -0.13

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.

14YJ50    quality flag:3

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

axisobj        39.749    39.758    39.740
ecceobj         0.204     0.204     0.204
incobj          7.278     7.278     7.278
qmin           31.120    31.306    31.246
qmax           48.558    48.428    48.388
amean          39.457    39.457    39.457
amin           38.906    38.911    38.917
amax           40.075    40.063    40.062
emean           0.194     0.190     0.191
emin            0.176     0.171     0.174
emax            0.212     0.209     0.209
imean           6.720     7.030     7.142
imin            6.093     6.407     6.465
imax            7.739     8.085     7.922
excite_mean     0.227     0.226     0.228
fracstop        1.000     1.000     1.000
cjmean          2.993     2.994     2.993

libcent 0       179.3     181.4     181.3
libamp  0       126.4     129.1     127.5
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       177.6     174.6     167.0
kozaiamp        180.0     179.9     180.0