Orbit Fit and Astrometric record for 14YA50

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: 14YA50    
# Created Mon Dec 11 02:38:13 2017
# Orbit generated from Bernstein formalism
# Fitting   57 observations of   61
# Arc:  13.13y
# First observation: 2002/03/19
#  Last observation: 2015/05/04
Preliminary a, adot, b, bdot, g, gdot:
  -0.004895   0.023233   0.000771  -0.002808   0.024469   0.000000
# Chi-squared of fit:    36.73 DOF:  108 RMS:  0.14
# Min/Max residuals:    -0.81    0.37
# Exact a, adot, b, bdot, g, gdot:
  9.958797E-06  2.123074E-02  7.358839E-08 -2.573311E-03  2.273901E-02 -3.849839E-03
# Covariance matrix:
  4.4984E-13 -1.3617E-13 -4.0151E-14  1.5236E-14 -9.9558E-14 -3.4357E-13
 -1.3617E-13  5.9140E-14  1.8132E-14 -7.2344E-15  3.9916E-14  1.6444E-13
 -4.0151E-14  1.8132E-14  2.0046E-13 -1.8010E-14  2.0624E-14  5.1766E-14
  1.5236E-14 -7.2344E-15 -1.8010E-14  2.3445E-15 -5.4615E-15 -2.0620E-14
 -9.9558E-14  3.9916E-14  2.0624E-14 -5.4615E-15  8.4882E-14  1.1443E-13
 -3.4357E-13  1.6444E-13  5.1766E-14 -2.0620E-14  1.1443E-13  4.6858E-13
#      lat0       lon0       xBary       yBary       zBary        JD0
   23.275351  152.830762   -0.436703    0.353816   -0.822744  2452352.821313
# Heliocentric elements and errors
Epoch:              2452350.5000  =  2002/03/17
Mean Anomaly:          292.95639 +/-     0.008
Argument of Peri:      192.76231 +/-     0.011
Long of Asc Node:       45.25960 +/-     0.000
Inclination:            23.88725 +/-     0.000
Eccentricity:         0.16863228 +/-    0.0000
Semi-Major Axis:     46.65111170 +/-    0.0023
Time of Perihelion: 2474024.8602 +/-       2.1
Perihelion:          38.78422838 +/-    0.0025
Aphelion:            54.51799501 +/-    0.0031
Period (y)              318.6407 +/-      0.02
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -36.93628364 +/-    0.0005
Ecliptic Y           18.47224177 +/-    0.0002
Ecliptic Z           17.37766317 +/-    0.0002
Ecliptic XDOT        -0.00090575 +/-    0.0000
Ecliptic YDOT        -0.00241387 +/-    0.0000
Ecliptic ZDOT        -0.00046757 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   44.80508835 +/-    0.0004
Geocenter to KBO     43.97728453 +/-    0.0006
# Hcoef:  4.69

The following table shows the complete astrometric record for 14YA50. 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 (14YA50) followed by the observatory code and reference code for the source of the astrometry.

2002 03  19.32057  10 57 44.09   +31 57 52.4   20.2R 14YA50    644  C~1vXy      
2002 03  19.34341  10 57 43.91   +31 57 52.6   20.1R 14YA50    644  C~1vXy      
2003 02  01.42374  11 06 21.81   +30 58 05.3   20.7R 14YA50    644  C~1vXy      
2003 02  01.44513  11 06 21.67   +30 58 06.7   20.3R 14YA50    644  C~1vXy      
2003 02  01.46598  11 06 21.61   +30 58 07.2   20.6R 14YA50    644  C~1vXy      
2004 03  11.24660  11 08 10.25   +30 36 34.7   20.9R 14YA50    644  C~1vXy      
2004 03  11.31222  11 08 09.91   +30 36 35.6   21.2R 14YA50    644  C~1vXy      
2004 03  11.37876  11 08 09.58   +30 36 37.0   20.8R 14YA50    644  C~1vXy      
2004 05  14.198888 11 04 18.52   +30 32 31.2   20.9V 14YA50    645  C~1w3x      
2004 05  14.200134 11 04 18.52   +30 32 31.2   20.6V 14YA50    645  C~1w3x      
2004 05  14.202205 11 04 18.52   +30 32 31.1   21.8V 14YA50    645  C~1w3x      
2004 12  13.480011 11 17 36.75   +29 06 17.6   20.9V 14YA50    645  C~1w3x      
2004 12  13.480840 11 17 36.75   +29 06 17.6   20.5V 14YA50    645  C~1w3x      
2004 12  13.483328 11 17 36.75   +29 06 17.6   21.6V 14YA50    645  C~1w3x      
2011 03  25.46783  11 40 22.223  +25 34 23.67  20.6r 14YA50    F51  C~1vXz      
2011 03  25.47920  11 40 22.168  +25 34 23.80  20.7r 14YA50    F51  C~1vXz      
2011 03  25.49407  11 40 22.080  +25 34 24.12  20.3i 14YA50    F51  C~1vXz      
2011 03  25.50601  11 40 22.031  +25 34 24.25  20.4i 14YA50    F51  C~1vXz      
2014 02  20.54253  11 56 47.850  +22 54 01.79  20.5i 14YA50    F51  C~1vXz      
2014 02  20.55601  11 56 47.790  +22 54 02.25  20.4i 14YA50    F51  C~1vXz      
2014 02  20.56959  11 56 47.726  +22 54 02.60  20.3i 14YA50    F51  C~1vXz      
2014 02  20.58325  11 56 47.673  +22 54 03.21  20.2i 14YA50    F51  C~1vXz      
2014 12  25.56769  12 03 21.074  +21 31 36.06  21.0w 14YA50    F51  C~1vXz      
2014 12  25.58022  12 03 21.053  +21 31 36.64  21.1w 14YA50    F51  C~1vXz      
2014 12  25.59271  12 03 21.072  +21 31 36.48  21.0w 14YA50    F51  C~1vXz      
2015 01  15.53953  12 03 09.774  +21 41 57.47  20.6r 14YA50    F51  C~1vXz      
2015 01  15.55073  12 03 09.756  +21 41 57.86  20.7r 14YA50    F51  C~1vXz      
2015 01  15.56194  12 03 09.739  +21 41 58.34  20.8r 14YA50    F51  C~1vXz      
2015 01  15.57324  12 03 09.716  +21 41 58.54  20.7r 14YA50    F51  C~1vXz      
2015 01  17.46688  12 03 06.670  +21 43 02.77  21.1w 14YA50    F51  C~1vXz      
2015 01  17.46753  12 03 06.669  +21 43 02.93  20.9w 14YA50    F51  C~1vXz      
2015 01  17.48081  12 03 06.652  +21 43 03.33  21.0w 14YA50    F51  C~1vXz      
2015 01  17.48146  12 03 06.648  +21 43 03.38  20.9w 14YA50    F51  C~1vXz      
2015 01  17.49469  12 03 06.624  +21 43 03.67  20.9w 14YA50    F51  C~1vXz      
2015 01  17.49534  12 03 06.625  +21 43 03.90  20.9w 14YA50    F51  C~1vXz      
2015 01  17.50861  12 03 06.597  +21 43 04.23  20.9w 14YA50    F51  C~1vXz      
2015 01  17.50926  12 03 06.595  +21 43 04.38  20.9w 14YA50    F51  C~1vXz      
2015 02  20.57573  12 01 22.795  +22 03 32.86  20.7w 14YA50    F51  C~1vXz      
2015 02  20.58933  12 01 22.745  +22 03 33.39  20.9w 14YA50    F51  C~1vXz      
2015 02  20.60298  12 01 22.686  +22 03 33.83  20.8w 14YA50    F51  C~1vXz      
2015 02  20.61678  12 01 22.627  +22 03 34.29  20.8w 14YA50    F51  C~1vXz      
2015 02  23.36899  12 01 10.998  +22 05 09.97  20.6w 14YA50    F51  C~1vXz      
2015 02  23.38157  12 01 10.947  +22 05 10.41  20.6w 14YA50    F51  C~1vXz      
2015 02  23.39414  12 01 10.890  +22 05 10.81  20.7w 14YA50    F51  C~1vXz      
2015 02  23.40672  12 01 10.836  +22 05 11.27  20.7w 14YA50    F51  C~1vXz      
2015 03  28.30730  11 58 35.524  +22 20 25.38  20.1i 14YA50    F51  C~1vXz      
2015 03  28.31992  11 58 35.464  +22 20 25.65  20.1i 14YA50    F51  C~1vXz      
2015 03  28.33270  11 58 35.401  +22 20 25.90  20.2i 14YA50    F51  C~1vXz      
2015 03  28.34548  11 58 35.344  +22 20 26.03  20.3i 14YA50    F51  C~1vXz      
2015 04  07.41124  11 57 47.742  +22 23 05.27  20.5i 14YA50    F51  C~1vXz      
2015 04  07.42447  11 57 47.672  +22 23 05.25  20.4i 14YA50    F51  C~1vXz      
2015 04  07.43781  11 57 47.624  +22 23 05.58  20.3i 14YA50    F51  C~1vXz      
2015 04  07.45128  11 57 47.547  +22 23 05.76  20.4i 14YA50    F51  C~1vXz      
2015 04  08.43587  11 57 43.030  +22 23 17.67  20.5i 14YA50    F51  C~1vXz      
2015 04  08.44898  11 57 42.980  +22 23 17.61  20.6i 14YA50    F51  C~1vXz      
2015 04  08.46214  11 57 42.911  +22 23 17.78  20.5i 14YA50    F51  C~1vXz      
2015 04  08.47536  11 57 42.856  +22 23 18.04  20.4i 14YA50    F51  C~1vXz      
2015 05  04.35195  11 55 59.665  +22 24 15.24  20.3i 14YA50    F51  C~1vXz      
2015 05  04.37565  11 55 59.577  +22 24 15.00  20.5i 14YA50    F51  C~1vXz      
2015 05  04.41472  11 55 59.454  +22 24 14.81  20.3i 14YA50    F51  C~1vXz      
2015 05  04.42796  11 55 59.424  +22 24 14.90  20.2i 14YA50    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 (   0.99)      0.00 (  -0.38)
  2   0.0001     -2.17     0.25      -0.77    -0.81
  3   0.8737   7523.96 (   0.93)   -422.96 (  -0.14)
  4   0.8737   7521.73     0.08    -422.49     0.13
  5   0.8738   7520.82 (   0.51)   -422.37 (   0.05)
  6   1.9793   9347.75 (   0.12)   -974.33 (   0.58)
  7   1.9794   9343.40     0.24    -975.45     0.21
  8   1.9796   9338.95     0.30    -976.06     0.37
  9   2.1544   6754.44    -0.23   -2495.00     0.04
 10   2.1544   6754.44    -0.23   -2495.00     0.08
 11   2.1544   6754.49    -0.17   -2495.09     0.06
 12   2.7383  18405.45    -0.19   -2524.69     0.05
 13   2.7383  18405.45    -0.18   -2524.69     0.03
 14   2.7383  18405.45    -0.15   -2524.69    -0.04
 15   9.0161  40940.53     0.09   -5066.73     0.06
 16   9.0162  40939.79     0.14   -5066.99     0.01
 17   9.0162  40938.55    -0.07   -5067.31    -0.03
 18   9.0163  40937.89     0.08   -5067.53    -0.03
 19  11.9267  58418.34     0.21   -6564.61     0.09
 20  11.9267  58417.32     0.19   -6564.64     0.06
 21  11.9268  58416.30     0.20   -6564.81    -0.08
 22  11.9268  58415.28     0.20   -6564.66     0.08
 23  12.7700  66340.58     0.09   -7989.66     0.09
 24  12.7700  66339.96    -0.41   -7989.30     0.13
 25  12.7701  66340.30     0.06   -7989.30    -0.18
 26  12.8274  65826.16    -0.05   -7521.40     0.01
 27  12.8275  65825.70    -0.06   -7521.19     0.02
 28  12.8275  65825.19    -0.10   -7520.89     0.12
 29  12.8275  65824.77    -0.06   -7520.89    -0.08
 30  12.8327  65747.32    -0.02   -7487.01    -0.11
 31  12.8327  65747.21    -0.10   -7486.87     0.02
 32  12.8327  65746.75     0.02   -7486.65     0.01
 33  12.8327  65746.67    -0.03   -7486.63     0.01
 34  12.8328  65746.19     0.06   -7486.56    -0.14
 35  12.8328  65746.06    -0.04   -7486.35     0.06
 36  12.8328  65745.51    -0.02   -7486.27    -0.09
 37  12.8328  65745.39    -0.11   -7486.15     0.02
 38  12.9261  63681.63     0.07   -7186.43    -0.10
 39  12.9261  63680.67     0.14   -7186.34     0.01
 40  12.9262  63679.65     0.14   -7186.40    -0.03
 41  12.9262  63678.62     0.15   -7186.44    -0.05
 42  12.9337  63472.90     0.05   -7189.92    -0.06
 43  12.9338  63471.99     0.10   -7189.91    -0.02
 44  12.9338  63471.02     0.09   -7189.99    -0.07
 45  12.9338  63470.06     0.09   -7189.99    -0.05
 46  13.0239  60945.24    -0.14   -7552.89     0.01
 47  13.0240  60944.31    -0.14   -7553.10     0.04
 48  13.0240  60943.36    -0.14   -7553.36     0.04
 49  13.0240  60942.56    -0.00   -7553.67    -0.02
 50  13.0516  60241.74    -0.03   -7769.74     0.09
 51  13.0516  60240.85    -0.03   -7770.29    -0.13
 52  13.0517  60240.05     0.06   -7770.35     0.13
 53  13.0517  60238.96    -0.13   -7770.77     0.04
 54  13.0544  60174.35    -0.16   -7794.06     0.07
 55  13.0544  60173.75     0.10   -7794.49    -0.03
 56  13.0545  60172.77    -0.01   -7794.85    -0.07
 57  13.0545  60171.92     0.01   -7795.03     0.07
 58  13.1253  58820.35    -0.03   -8515.38    -0.06
 59  13.1254  58819.36    -0.11   -8516.25    -0.18
 60  13.1255  58817.90    -0.09   -8517.33    -0.03
 61  13.1256  58817.47    -0.02   -8517.48     0.24

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.

14YA50    quality flag:3

Type:       SCATEXTD  SCATEXTD  SCATEXTD

axisobj        46.311    46.317    46.304
ecceobj         0.167     0.167     0.167
incobj         23.897    23.897    23.897
qmin           37.531    37.524    37.553
qmax           55.861    55.870    55.828
amean          46.494    46.501    46.487
amin           46.091    46.095    46.086
amax           46.934    46.950    46.931
emean           0.175     0.175     0.175
emin            0.161     0.162     0.161
emax            0.190     0.191     0.191
imean          22.883    22.883    22.882
imin           22.469    22.471    22.466
imax           23.281    23.275    23.276
excite_mean     0.427     0.427     0.427
fracstop        1.000     1.000     1.000
cjmean          2.902     2.902     2.902

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       182.4     182.6     182.4
kozaiamp        180.0     180.0     180.0