Orbit Fit and Astrometric record for 14YD50

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: 14YD50    
# Created Thu Nov 15 02:10:03 2018
# Orbit generated from Bernstein formalism
# Fitting   60 observations of   60
# Arc:   4.97y
# First observation: 2013/01/21
#  Last observation: 2018/01/12
Preliminary a, adot, b, bdot, g, gdot:
  -0.003380   0.043317   0.000181  -0.002297   0.030337   0.000000
# Chi-squared of fit:    21.14 DOF:  114 RMS:  0.10
# Min/Max residuals:    -0.30    0.28
# Exact a, adot, b, bdot, g, gdot:
  2.167691E-05  4.135924E-02 -8.244151E-07 -2.184688E-03  3.016322E-02 -5.136991E-03
# Covariance matrix:
  5.8038E-13 -3.5157E-13 -1.9650E-14  1.5317E-14 -7.9058E-14 -1.0999E-12
 -3.5157E-13  2.5380E-13  1.4002E-14 -1.2105E-14  9.9700E-14  8.8711E-13
 -1.9650E-14  1.4002E-14  1.7524E-13 -4.5755E-14  1.5700E-16  4.7976E-14
  1.5317E-14 -1.2105E-14 -4.5755E-14  1.4089E-14 -5.4056E-15 -4.4937E-14
 -7.9058E-14  9.9700E-14  1.5700E-16 -5.4056E-15  1.9300E-13  4.6755E-13
 -1.0999E-12  8.8711E-13  4.7976E-14 -4.4937E-14  4.6755E-13  3.3400E-12
#      lat0       lon0       xBary       yBary       zBary        JD0
  -10.319942  111.516378   -0.171020   -0.173286   -0.952025  2456313.970718
# Heliocentric elements and errors
Epoch:              2456310.5000  =  2013/01/18
Mean Anomaly:          357.41319 +/-     0.001
Argument of Peri:      270.85233 +/-     0.006
Long of Asc Node:      218.13442 +/-     0.001
Inclination:            10.44051 +/-     0.000
Eccentricity:         0.66415880 +/-    0.0001
Semi-Major Axis:     99.80350549 +/-    0.0211
Time of Perihelion: 2458927.3569 +/-       0.9
Perihelion:          33.51812898 +/-    0.0098
Aphelion:           166.08888200 +/-    0.0358
Period (y)              997.0729 +/-      0.32
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -12.47622823 +/-    0.0002
Ecliptic Y           31.18338805 +/-    0.0004
Ecliptic Z           -5.93922392 +/-    0.0001
Ecliptic XDOT        -0.00331738 +/-    0.0000
Ecliptic YDOT        -0.00183556 +/-    0.0000
Ecliptic ZDOT        -0.00011143 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   34.10768743 +/-    0.0004
Geocenter to KBO     33.15295410 +/-    0.0005
# Hcoef:  6.76

The following table shows the complete astrometric record for 14YD50. 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 (14YD50) followed by the observatory code and reference code for the source of the astrometry.

2013 01  21.46994  07 26 25.888  +11 31 11.72  22.1G 14YD50    F51  C~2kRF      
2013 01  21.48288  07 26 25.818  +11 31 11.80  22.1G 14YD50    F51  C~2kRF      
2014 12  18.57381  07 48 42.165  +10 25 32.89  22.0r 14YD50    F51  C~1vXz      
2014 12  18.58490  07 48 42.107  +10 25 33.01  21.8r 14YD50    F51  C~1vXz      
2014 12  18.59598  07 48 42.066  +10 25 32.70  22.1r 14YD50    F51  C~1vXz      
2015 01  21.45551  07 45 36.276  +10 30 56.45  22.0G 14YD50    F51  C~2lVn      
2015 01  21.46834  07 45 36.194  +10 30 56.92  21.7G 14YD50    F51  C~2lVn      
2015 01  21.49412  07 45 36.043  +10 30 57.45  20.9G 14YD50    F51  C~2lVn      
2015 01  21.49688  07 45 36.029  +10 30 57.25  22.0G 14YD50    F51  C~2lVn      
2015 02  18.23747  07 43 11.692  +10 39 52.24  22.0w 14YD50    F51  C~1vXz      
2015 02  18.24951  07 43 11.635  +10 39 52.24  22.2w 14YD50    F51  C~1vXz      
2015 02  18.26148  07 43 11.570  +10 39 52.30  22.3w 14YD50    F51  C~1vXz      
2015 02  19.25104  07 43 07.254  +10 40 13.99  22.2w 14YD50    F51  C~1vXz      
2015 02  19.26307  07 43 07.184  +10 40 14.05  21.9w 14YD50    F51  C~1vXz      
2015 02  19.27520  07 43 07.134  +10 40 14.39  22.1w 14YD50    F51  C~1vXz      
2015 03  18.29472  07 41 42.898  +10 49 59.02  21.7w 14YD50    F51  C~1vXz      
2015 03  18.30729  07 41 42.893  +10 49 59.30  21.9w 14YD50    F51  C~1vXz      
2015 03  18.31964  07 41 42.864  +10 49 59.39  21.9w 14YD50    F51  C~1vXz      
2015 03  18.33208  07 41 42.840  +10 49 59.70  22.0w 14YD50    F51  C~1vXz      
2015 03  19.29874  07 41 41.228  +10 50 19.50  22.4G 14YD50    F51  C~2lVn      
2015 03  19.31121  07 41 41.203  +10 50 19.70  21.9G 14YD50    F51  C~2lVn      
2015 03  19.32361  07 41 41.187  +10 50 20.09  22.2G 14YD50    F51  C~2lVn      
2015 03  19.33605  07 41 41.154  +10 50 20.35  22.0G 14YD50    F51  C~2lVn      
2016 01  12.34072  07 56 07.234  +09 56 27.97  21.8G 14YD50    F51  C~2kRF      
2016 01  12.35253  07 56 07.168  +09 56 28.29  21.7G 14YD50    F51  C~2kRF      
2016 01  12.36436  07 56 07.090  +09 56 28.31  21.9G 14YD50    F51  C~2kRF      
2016 01  12.37615  07 56 07.024  +09 56 28.58  22.2G 14YD50    F51  C~2kRF      
2016 01  31.31961  07 54 19.485  +10 01 42.87  21.7G 14YD50    F51  C~2kRF      
2016 01  31.33157  07 54 19.421  +10 01 43.21  22.1G 14YD50    F51  C~2kRF      
2016 01  31.34354  07 54 19.345  +10 01 43.53  21.5G 14YD50    F51  C~2kRF      
2016 01  31.35571  07 54 19.282  +10 01 43.74  21.7G 14YD50    F51  C~2kRF      
2016 11  10.57635  08 09 36.018  +09 24 29.36  21.9G 14YD50    F51  C~2kRF      
2016 11  10.58800  08 09 36.012  +09 24 29.13  21.9G 14YD50    F51  C~2kRF      
2016 11  10.59966  08 09 35.997  +09 24 28.91  21.8G 14YD50    F51  C~2kRF      
2016 11  10.61123  08 09 35.996  +09 24 28.86  21.8G 14YD50    F51  C~2kRF      
2017 01  26.37361  08 04 21.374  +09 27 04.09  21.7G 14YD50    F51  C~2kRF      
2017 01  26.38443  08 04 21.314  +09 27 04.53  21.9G 14YD50    F51  C~2kRF      
2017 01  26.39521  08 04 21.255  +09 27 04.56  21.9G 14YD50    F51  C~2kRF      
2017 01  26.40606  08 04 21.198  +09 27 04.79  21.6G 14YD50    F51  C~2kRF      
2017 02  03.45822  08 03 36.351  +09 29 47.54  22.1G 14YD50    F51  C~2kRF      
2017 02  03.46964  08 03 36.296  +09 29 47.68  21.8G 14YD50    F51  C~2kRF      
2017 02  03.48101  08 03 36.213  +09 29 48.04  22.3G 14YD50    F51  C~2kRF      
2017 02  03.49238  08 03 36.174  +09 29 48.24  22.2G 14YD50    F51  C~2kRF      
2017 11  22.54741  08 18 48.754  +08 47 17.66  22.3G 14YD50    F51  C~2kRF      
2017 11  22.56902  08 18 48.714  +08 47 17.24  22.4G 14YD50    F51  C~2kRF      
2017 11  22.57993  08 18 48.689  +08 47 17.12  22.0G 14YD50    F51  C~2kRF      
2017 12  20.47225  08 17 18.285  +08 45 08.49  21.9R 14YD50    G37              
2017 12  20.51363  08 17 18.081  +08 45 08.71        14YD50    G37              
2017 12  24.44980  08 16 59.955  +08 45 24.69  21.8G 14YD50    F51  C~2kRF      
2017 12  24.46135  08 16 59.897  +08 45 24.72  22.4G 14YD50    F51  C~2kRF      
2017 12  24.47299  08 16 59.838  +08 45 24.87  21.9G 14YD50    F51  C~2kRF      
2017 12  24.48456  08 16 59.787  +08 45 24.84  21.7G 14YD50    F51  C~2kRF      
2018 01  10.44546  08 15 31.714  +08 48 04.16  21.5G 14YD50    F51  C~2kRF      
2018 01  10.45963  08 15 31.640  +08 48 04.60  21.6G 14YD50    F51  C~2kRF      
2018 01  10.47376  08 15 31.567  +08 48 04.93  21.7G 14YD50    F51  C~2kRF      
2018 01  10.48792  08 15 31.483  +08 48 04.99  21.8G 14YD50    F51  C~2kRF      
2018 01  12.54278  08 15 20.045  +08 48 33.58  22.0G 14YD50    F51  C~2kRF      
2018 01  12.55616  08 15 19.975  +08 48 33.79  21.9G 14YD50    F51  C~2kRF      
2018 01  12.56959  08 15 19.896  +08 48 33.95  21.7G 14YD50    F51  C~2kRF      
2018 01  12.58306  08 15 19.828  +08 48 34.08  21.6G 14YD50    F51  C~2kRF      

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     0.00       0.00    -0.07
  2   0.0000     -1.03     0.07      -0.07    -0.16
  3   1.9058  20115.92     0.09    -778.86    -0.00
  4   1.9059  20115.05     0.03    -778.89     0.09
  5   1.9059  20114.50     0.28    -779.30    -0.21
  6   1.9986  17335.57     0.04    -914.81    -0.16
  7   1.9986  17334.29    -0.12    -914.54     0.09
  8   1.9987  17331.99    -0.16    -914.38     0.20
  9   1.9987  17331.82    -0.09    -914.62    -0.03
 10   2.0747  15131.16    -0.07    -734.42     0.28
 11   2.0747  15130.32    -0.07    -734.56     0.01
 12   2.0747  15129.36    -0.19    -734.65    -0.21
 13   2.0774  15062.70     0.13    -723.57     0.17
 14   2.0775  15061.67    -0.08    -723.68    -0.07
 15   2.0775  15060.88    -0.04    -723.46     0.01
 16   2.1515  13734.66    -0.14    -346.89     0.10
 17   2.1515  13734.54     0.12    -346.63     0.16
 18   2.1515  13734.11     0.05    -346.61    -0.02
 19   2.1516  13733.71     0.02    -346.36     0.04
 20   2.1542  13706.95     0.06    -330.62    -0.04
 21   2.1543  13706.55     0.02    -330.48    -0.10
 22   2.1543  13706.26     0.07    -330.13     0.05
 23   2.1543  13705.73    -0.10    -329.96     0.03
 24   2.9730  26976.85     0.02   -1387.54    -0.08
 25   2.9730  26975.82     0.02   -1387.39     0.09
 26   2.9730  26974.66    -0.10   -1387.57    -0.08
 27   2.9730  26973.63    -0.08   -1387.47     0.04
 28   3.0249  25328.51     0.01   -1350.23    -0.11
 29   3.0249  25327.51     0.04   -1350.05     0.00
 30   3.0250  25326.33    -0.11   -1349.93     0.07
 31   3.0250  25325.36    -0.02   -1349.88     0.05
 32   3.8032  39403.51    -0.04   -1152.42    -0.07
 33   3.8032  39403.46     0.02   -1152.67    -0.09
 34   3.8032  39403.28    -0.05   -1152.93    -0.13
 35   3.8033  39403.27     0.06   -1152.98     0.04
 36   4.0134  34648.01     0.09   -1849.60     0.01
 37   4.0135  34647.03     0.08   -1849.32     0.25
 38   4.0135  34646.14     0.16   -1849.45     0.08
 39   4.0135  34645.24     0.24   -1849.37     0.12
 40   4.0356  33944.41    -0.06   -1806.53    -0.00
 41   4.0356  33943.57     0.08   -1806.54    -0.08
 42   4.0356  33942.26    -0.24   -1806.40    -0.02
 43   4.0357  33941.64     0.13   -1806.30     0.01
 44   4.8353  48245.95    -0.06   -1845.96     0.11
 45   4.8353  48245.42     0.00   -1846.50    -0.05
 46   4.8353  48245.06    -0.06   -1846.70    -0.05
 47   4.9117  46884.67     0.02   -2233.70     0.03
 48   4.9118  46881.50    -0.24   -2234.05     0.09
 49   4.9226  46600.87    -0.02   -2269.28    -0.03
 50   4.9226  46599.97    -0.05   -2269.41    -0.06
 51   4.9227  46599.04    -0.10   -2269.42     0.02
 52   4.9227  46598.26    -0.01   -2269.60    -0.06
 53   4.9691  45220.88    -0.10   -2357.48    -0.30
 54   4.9692  45219.66    -0.05   -2357.25    -0.03
 55   4.9692  45218.48     0.02   -2357.12     0.13
 56   4.9692  45217.19    -0.02   -2357.30    -0.01
 57   4.9749  45037.05     0.03   -2360.65    -0.01
 58   4.9749  45035.94     0.12   -2360.63     0.03
 59   4.9749  45034.70     0.09   -2360.69    -0.01
 60   4.9750  45033.64     0.23   -2360.75    -0.05

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.

14YD50    quality flag:3

Type:       SCATNEAR  SCATNEAR  SCATNEAR

axisobj        99.369    99.425    99.313
ecceobj         0.662     0.662     0.662
incobj         10.426    10.426    10.426
qmin           32.676    32.418    32.666
qmax          168.318   168.755   170.308
amean          96.298    95.990    95.095
amin           91.993    93.164    87.943
amax          101.131   101.138   102.001
emean           0.648     0.649     0.643
emin            0.625     0.634     0.611
emax            0.667     0.669     0.670
imean          12.220    11.973    12.121
imin           10.963    10.613    10.801
imax           13.619    13.113    13.524
excite_mean     0.682     0.681     0.677
fracstop        1.000     1.000     1.000
cjmean          2.975     2.971     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       200.0     185.8     199.1
kozaiamp        180.0     180.0     180.0