Orbit Fit and Astrometric record for 14YB50

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: 14YB50    
# Created Mon Feb 26 02:38:17 2018
# Orbit generated from Bernstein formalism
# Fitting   23 observations of   25
# Arc:   2.98y
# First observation: 2014/12/26
#  Last observation: 2017/12/20
Preliminary a, adot, b, bdot, g, gdot:
  -0.000001   0.025515  -0.000002   0.013536   0.027070   0.000000
# Chi-squared of fit:    33.27 DOF:   40 RMS:  0.21
# Min/Max residuals:    -1.19    0.38
# Exact a, adot, b, bdot, g, gdot:
  1.515510E-05  2.541861E-02  7.627767E-06  1.348735E-02  2.702166E-02 -7.025363E-04
# Covariance matrix:
  3.4779E-13 -1.7120E-13 -2.1622E-15 -1.4310E-14  6.5831E-13 -4.2792E-13
 -1.7120E-13  1.4498E-12 -5.4032E-14  7.1132E-13 -2.9025E-14  1.9055E-11
 -2.1622E-15 -5.4032E-14  8.2865E-14 -6.4131E-14 -1.8276E-14 -7.8990E-13
 -1.4310E-14  7.1132E-13 -6.4131E-14  4.5028E-13  1.3010E-13  1.0153E-11
  6.5831E-13 -2.9025E-14 -1.8276E-14  1.3010E-13  1.6937E-12  3.3700E-12
 -4.2792E-13  1.9055E-11 -7.8990E-13  1.0153E-11  3.3700E-12  2.7172E-10
#      lat0       lon0       xBary       yBary       zBary        JD0
    6.212437  115.795808    0.360115    0.099084   -0.908680  2457018.030828
# Heliocentric elements and errors
Epoch:              2457010.5000  =  2014/12/19
Mean Anomaly:          341.67660 +/-     0.282
Argument of Peri:       35.14316 +/-     0.350
Long of Asc Node:      104.00206 +/-     0.000
Inclination:            28.56345 +/-     0.001
Eccentricity:         0.10022227 +/-    0.0002
Semi-Major Axis:     41.85440876 +/-    0.0099
Time of Perihelion: 2462044.5077 +/-      77.4
Perihelion:          37.65966507 +/-    0.0129
Aphelion:            46.04915245 +/-    0.0144
Period (y)              270.7821 +/-      0.10
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -16.08659297 +/-    0.0008
Ecliptic Y           34.10422759 +/-    0.0016
Ecliptic Z            4.00500529 +/-    0.0002
Ecliptic XDOT        -0.00222765 +/-    0.0000
Ecliptic YDOT        -0.00132280 +/-    0.0000
Ecliptic ZDOT         0.00135092 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   37.91987447 +/-    0.0015
Geocenter to KBO     37.00735552 +/-    0.0018
# Hcoef:  5.77

The following table shows the complete astrometric record for 14YB50. 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 (14YB50) followed by the observatory code and reference code for the source of the astrometry.

2014 12  26.53005  07 56 17.144  +27 05 08.17  21.8w 14YB50    F51  C~1vXz      
2014 12  26.54235  07 56 17.080  +27 05 08.54  21.8w 14YB50    F51  C~1vXz      
2014 12  26.55472  07 56 17.017  +27 05 08.73  21.7w 14YB50    F51  C~1vXz      
2014 12  26.56707  07 56 16.938  +27 05 09.06  21.8w 14YB50    F51  C~1vXz      
2015 01  20.33160  07 53 52.107  +27 15 20.24  21.6w 14YB50    F51  C~1vXz      
2015 01  20.34351  07 53 52.035  +27 15 20.47  21.6w 14YB50    F51  C~1vXz      
2015 01  20.35545  07 53 51.965  +27 15 20.73  21.5w 14YB50    F51  C~1vXz      
2015 01  20.36742  07 53 51.890  +27 15 21.05  21.6w 14YB50    F51  C~1vXz      
2015 01  22.29567  07 53 40.323  +27 16 04.14  21.5w 14YB50    F51  C~1vXz      
2015 01  22.30754  07 53 40.249  +27 16 04.35  21.4w 14YB50    F51  C~1vXz      
2015 01  22.31944  07 53 40.181  +27 16 04.66  21.5w 14YB50    F51  C~1vXz      
2015 01  22.33135  07 53 40.102  +27 16 04.98  21.6w 14YB50    F51  C~1vXz      
2015 01  28.29806  07 53 04.656  +27 18 12.42  21.6r 14YB50    F51  C~1vXz      
2015 01  28.30901  07 53 04.589  +27 18 12.55  21.3r 14YB50    F51  C~1vXz      
2015 01  28.31037  07 53 04.587  +27 18 12.45  21.5r 14YB50    F51  C~1vXz      
2015 01  28.32125  07 53 04.529  +27 18 12.53  21.4r 14YB50    F51  C~1vXz      
2015 01  28.32262  07 53 04.515  +27 18 12.79  21.6r 14YB50    F51  C~1vXz      
2015 01  28.33346  07 53 04.447  +27 18 12.88  21.5r 14YB50    F51  C~1vXz      
2015 01  28.33484  07 53 04.435  +27 18 12.93  21.5r 14YB50    F51  C~1vXz      
2016 12  27.28895  08 10 31.34   +28 00 05.1   21.4R 14YB50    H36  C~2519      
2016 12  27.35445  08 10 31.02   +28 00 07.7   21.0R 14YB50    H36  C~2519      
2016 12  30.20956  08 10 15.52   +28 01 25.9   20.8R 14YB50    H36  C~2519      
2016 12  30.25583  08 10 15.28   +28 01 28.5   21.1R 14YB50    H36  C~2519      
2017 12  20.47458  08 18 23.111  +28 21 40.53  20.5R 14YB50    G37  C~2Uxt      
2017 12  20.51526  08 18 22.897  +28 21 41.84        14YB50    G37  C~2Uxt      

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    -0.06       0.00     0.05
  2   0.0000     -0.91    -0.01       0.20     0.12
  3   0.0001     -1.77     0.09       0.22     0.00
  4   0.0001     -2.87    -0.05       0.34    -0.01
  5   0.0679  -2017.07    -0.02     228.95     0.03
  6   0.0679  -2018.05    -0.01     228.99    -0.01
  7   0.0680  -2019.02     0.03     229.07    -0.02
  8   0.0680  -2020.06    -0.00     229.20     0.02
  9   0.0733  -2179.68    -0.01     242.28     0.08
 10   0.0733  -2180.69    -0.02     242.30     0.02
 11   0.0733  -2181.64     0.02     242.43     0.07
 12   0.0734  -2182.74    -0.07     242.55     0.10
 13   0.0897  -2670.89    -0.08     278.53     0.18
 14   0.0897  -2671.80    -0.09     278.49     0.07
 15   0.0897  -2671.80     0.02     278.38    -0.04
 16   0.0898  -2672.58     0.14     278.32    -0.16
 17   0.0898  -2672.81     0.02     278.54     0.05
 18   0.0898  -2673.72    -0.00     278.45    -0.09
 19   0.0898  -2673.88    -0.06     278.47    -0.08
 20   2.0034  10435.09 (  -1.11)   5598.05 (   1.34)
 21   2.0036  10430.37 (  -0.79)   5599.64 (   2.15)
 22   2.0114  10212.25     0.27    5630.17    -1.19
 23   2.0116  10208.57     0.23    5632.00     0.10
 24   2.9841  16237.30    -0.05    8310.79     0.35
 25   2.9842  16234.22    -0.27    8311.38     0.38

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.

14YB50    quality flag:3

Type:       SCATEXTD  SCATEXTD  SCATEXTD

axisobj        41.801    41.832    41.770
ecceobj         0.096     0.097     0.096
incobj         28.579    28.578    28.579
qmin           36.892    36.949    36.845
qmax           46.671    46.706    46.665
amean          41.657    41.686    41.616
amin           41.320    41.365    41.278
amax           42.000    42.044    41.982
emean           0.097     0.097     0.094
emin            0.082     0.083     0.078
emax            0.112     0.111     0.112
imean          26.975    26.976    26.989
imin           26.610    26.620    26.614
imax           27.367    27.367    27.382
excite_mean     0.464     0.464     0.463
fracstop        1.000     1.000     1.000
cjmean          2.809     2.810     2.809

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       170.8     171.7     172.2
kozaiamp        180.0     179.9     179.9