Orbit Fit and Astrometric record for 14WZ508

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: 14WZ508   
# Created Sun Oct 22 01:38:30 2017
# Orbit generated from Bernstein formalism
# Fitting   64 observations of   67
# Arc:   6.25y
# First observation: 2011/01/30
#  Last observation: 2017/05/02
Preliminary a, adot, b, bdot, g, gdot:
   0.000603   0.065964  -0.000460  -0.028304   0.043028   0.000000
# Chi-squared of fit:    49.88 DOF:  122 RMS:  0.16
# Min/Max residuals:    -0.57    0.38
# Exact a, adot, b, bdot, g, gdot:
  2.299415E-05  6.776167E-02 -1.058530E-05 -2.918843E-02  4.403811E-02  6.851018E-03
# Covariance matrix:
  1.4559E-13 -8.4341E-14 -1.8270E-14  2.5340E-14 -1.6795E-14 -1.7483E-13
 -8.4341E-14  9.5478E-14  2.8208E-14 -3.9140E-14  2.5489E-14  2.7007E-13
 -1.8270E-14  2.8208E-14  1.1883E-13 -4.1586E-14  8.0324E-15  8.8830E-14
  2.5340E-14 -3.9140E-14 -4.1586E-14  2.7579E-14 -8.4206E-15 -1.2422E-13
 -1.6795E-14  2.5489E-14  8.0324E-15 -8.4206E-15  8.0775E-14  5.4227E-14
 -1.7483E-13  2.7007E-13  8.8830E-14 -1.2422E-13  5.4227E-14  8.5849E-13
#      lat0       lon0       xBary       yBary       zBary        JD0
    7.509845  143.001502    0.217499    0.125982   -0.955715  2455592.037486
# Heliocentric elements and errors
Epoch:              2455590.5000  =  2011/01/29
Mean Anomaly:            1.56361 +/-     0.000
Argument of Peri:      150.04544 +/-     0.002
Long of Asc Node:      338.76379 +/-     0.000
Inclination:            24.25163 +/-     0.000
Eccentricity:         0.69733330 +/-    0.0000
Semi-Major Axis:     77.45287071 +/-    0.0088
Time of Perihelion: 2454509.1134 +/-       0.1
Perihelion:          23.44240515 +/-    0.0037
Aphelion:           131.46333626 +/-    0.0151
Period (y)              681.6548 +/-      0.12
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -18.61508938 +/-    0.0001
Ecliptic Y           14.30098495 +/-    0.0001
Ecliptic Z            2.96755867 +/-    0.0000
Ecliptic XDOT        -0.00306295 +/-    0.0000
Ecliptic YDOT        -0.00296158 +/-    0.0000
Ecliptic ZDOT        -0.00174340 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   23.66106776 +/-    0.0001
Geocenter to KBO     22.70760463 +/-    0.0001
# Hcoef:  7.89

The following table shows the complete astrometric record for 14WZ508. 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 (14WZ508) followed by the observatory code and reference code for the source of the astrometry.

2011 01  30.53672  09 51 52.020  +20 55 50.49  21.5w 14WZ508   F51  C~1vXp      
2011 01  30.55195  09 51 51.894  +20 55 50.89  21.3w 14WZ508   F51  C~1vXp      
2011 01  30.56927  09 51 51.753  +20 55 51.31  21.3w 14WZ508   F51  C~1vXp      
2011 01  30.58437  09 51 51.623  +20 55 51.83  21.4w 14WZ508   F51  C~1vXp      
2011 03  03.24782  09 47 27.99   +21 08 08.2   21.2V 14WZ508   G96  C~1vXp      
2011 03  03.25311  09 47 27.92   +21 08 08.9   21.9V 14WZ508   G96  C~1vXp      
2011 03  03.29353  09 47 27.67   +21 08 09.7   21.3V 14WZ508   G96  C~1vXp      
2011 03  03.30134  09 47 27.56   +21 08 09.5   21.4V 14WZ508   G96  C~1vXp      
2011 10  29.61482  10 07 13.893  +17 54 13.11  21.7w 14WZ508   F51  C~1vXp      
2011 10  29.62008  10 07 13.910  +17 54 13.20  21.7w 14WZ508   F51  C~1vXp      
2011 10  29.62536  10 07 13.944  +17 54 12.67  22.0w 14WZ508   F51  C~1vXp      
2011 10  29.63062  10 07 13.975  +17 54 12.68  21.8w 14WZ508   F51  C~1vXp      
2012 02  15.35870  10 02 38.137  +18 09 03.67  21.4w 14WZ508   F51  C~1vXq      
2012 02  15.37255  10 02 38.017  +18 09 03.99  21.4w 14WZ508   F51  C~1vXq      
2012 02  15.38641  10 02 37.908  +18 09 04.46  21.4w 14WZ508   F51  C~1vXq      
2012 02  15.40044  10 02 37.786  +18 09 04.75  21.3w 14WZ508   F51  C~1vXq      
2013 02  09.38615  10 15 38.669  +15 12 44.84  21.4w 14WZ508   F51  C~1vXq      
2013 02  09.40108  10 15 38.536  +15 12 45.31  21.4w 14WZ508   F51  C~1vXq      
2013 02  09.41622  10 15 38.417  +15 12 45.80  21.4w 14WZ508   F51  C~1vXq      
2013 02  09.43135  10 15 38.289  +15 12 46.25  21.4w 14WZ508   F51  C~1vXq      
2014 02  10.39141  10 27 16.256  +12 20 26.22  20.9i 14WZ508   F51  C~1vXq      
2014 02  10.40327  10 27 16.161  +12 20 26.37  21.1i 14WZ508   F51  C~1vXq      
2014 02  10.41516  10 27 16.079  +12 20 26.83  21.1i 14WZ508   F51  C~1vXq      
2014 02  10.42703  10 27 15.982  +12 20 27.12  21.0i 14WZ508   F51  C~1vXq      
2014 03  06.29897  10 24 09.908  +12 31 24.62  21.2i 14WZ508   F51  C~1vXq      
2014 03  06.31087  10 24 09.828  +12 31 25.28  20.7i 14WZ508   F51  C~1vXq      
2014 03  06.33465  10 24 09.612  +12 31 25.78  20.8i 14WZ508   F51  C~1vXq      
2014 04  04.24572  10 20 54.278  +12 40 20.37  21.8w 14WZ508   F51  C~1vXq      
2014 04  04.25762  10 20 54.220  +12 40 20.63  21.9w 14WZ508   F51  C~1vXq      
2014 04  04.26955  10 20 54.146  +12 40 20.50  21.9w 14WZ508   F51  C~1vXq      
2014 04  04.28148  10 20 54.091  +12 40 20.72  21.9w 14WZ508   F51  C~1vXq      
2014 11  27.56299  10 42 28.212  +09 24 38.25  22.3w 14WZ508   F51  C~1vXq      
2014 11  27.58894  10 42 28.261  +09 24 37.70  22.3w 14WZ508   F51  C~1vXq      
2014 11  27.60193  10 42 28.285  +09 24 37.16  22.4w 14WZ508   F51  C~1vXq      
2014 11  29.56084  10 42 32.397  +09 23 46.67  21.9w 14WZ508   F51  C~1vXq      
2014 11  29.57389  10 42 32.441  +09 23 46.28  22.1w 14WZ508   F51  C~1vXq      
2014 11  29.58688  10 42 32.439  +09 23 46.19  22.4w 14WZ508   F51  C~1vXq      
2014 11  29.59986  10 42 32.478  +09 23 45.62  22.1w 14WZ508   F51  C~1vXq      
2015 01  20.43906  10 40 47.046  +09 22 02.61  21.7w 14WZ508   F51  C~1vXq      
2015 01  20.45248  10 40 46.968  +09 22 02.76  21.6w 14WZ508   F51  C~1vXq      
2015 01  20.46586  10 40 46.898  +09 22 03.18  21.8w 14WZ508   F51  C~1vXq      
2015 01  20.47931  10 40 46.816  +09 22 03.34  21.7w 14WZ508   F51  C~1vXq      
2015 01  22.45126  10 40 35.574  +09 22 40.31  21.7w 14WZ508   F51  C~1vXq      
2015 01  22.46485  10 40 35.495  +09 22 40.57  21.8w 14WZ508   F51  C~1vXq      
2015 01  22.47850  10 40 35.415  +09 22 40.80  21.6w 14WZ508   F51  C~1vXq      
2015 01  22.49220  10 40 35.333  +09 22 41.06  21.7w 14WZ508   F51  C~1vXq      
2015 02  01.42605  10 39 32.960  +09 26 18.97  21.2i 14WZ508   F51  C~1vXq      
2015 02  01.43830  10 39 32.876  +09 26 18.78  21.0i 14WZ508   F51  C~1vXq      
2015 02  01.45061  10 39 32.777  +09 26 19.20  21.2i 14WZ508   F51  C~1vXq      
2015 02  01.46304  10 39 32.701  +09 26 19.33  21.2i 14WZ508   F51  C~1vXq      
2015 02  16.33730  10 37 45.915  +09 32 53.27  21.7w 14WZ508   F51  C~1vXq      
2015 02  16.34983  10 37 45.816  +09 32 53.63  21.6w 14WZ508   F51  C~1vXq      
2015 02  16.36235  10 37 45.726  +09 32 53.95  21.7w 14WZ508   F51  C~1vXq      
2015 02  16.37492  10 37 45.627  +09 32 54.30  21.8w 14WZ508   F51  C~1vXq      
2015 02  17.38896  10 37 37.967  +09 33 22.98  21.7w 14WZ508   F51  C~1vXq      
2015 02  17.40177  10 37 37.872  +09 33 23.48  21.6w 14WZ508   F51  C~1vXq      
2015 02  17.41461  10 37 37.763  +09 33 23.84  21.5w 14WZ508   F51  C~1vXq      
2015 02  17.42751  10 37 37.667  +09 33 24.16  21.7w 14WZ508   F51  C~1vXq      
2015 04  10.24762  10 31 38.248  +09 53 41.35  21.9w 14WZ508   F51  C~1vXq      
2015 04  10.25958  10 31 38.185  +09 53 41.52  21.5w 14WZ508   F51  C~1vXq      
2015 04  10.27158  10 31 38.125  +09 53 41.63  21.5w 14WZ508   F51  C~1vXq      
2015 04  10.28375  10 31 38.059  +09 53 41.81  21.6w 14WZ508   F51  C~1vXq      
2015 06  10.26715  10 30 48.829  +09 40 43.96  24.0w 14WZ508   F51  C~1vXq      
2015 06  10.27241  10 30 48.870  +09 40 43.63        14WZ508   F51  C~1vXq      
2015 06  10.27767  10 30 48.880  +09 40 43.59  23.0w 14WZ508   F51  C~1vXq      
2017 05  02.15442  10 51 09.65   +04 33 38.3   21.7R 14WZ508   G37  C~2FaR      
2017 05  02.22072  10 51 09.45   +04 33 38.9         14WZ508   G37  C~2FaR      

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     0.28       0.00     0.02
  2   0.0000     -1.80     0.28      -0.22    -0.01
  3   0.0001     -3.80     0.32      -0.50    -0.07
  4   0.0001     -5.69     0.21      -0.63    -0.00
  5   0.0868  -3729.42    -0.01    -550.82    -0.36
  6   0.0868  -3730.58    -0.57    -550.49     0.10
  7   0.0869  -3734.14 (   0.40)   -550.90 (   0.64)
  8   0.0870  -3735.53    -0.11    -551.61     0.12
  9   0.7449  16070.40     0.03   -5641.69     0.04
 10   0.7449  16070.60    -0.23   -5641.51     0.21
 11   0.7449  16071.25    -0.04   -5641.83    -0.10
 12   0.7450  16071.66    -0.09   -5641.67     0.07
 13   1.0426  12059.21    -0.14   -6215.98    -0.05
 14   1.0427  12057.49    -0.17   -6216.29    -0.12
 15   1.0427  12055.86    -0.11   -6216.40     0.01
 16   1.0427  12054.13    -0.13   -6216.74    -0.09
 17   2.0283  26504.34     0.24  -12074.21     0.04
 18   2.0284  26502.35     0.04  -12074.49     0.01
 19   2.0284  26500.53     0.05  -12074.66     0.08
 20   2.0285  26498.61    -0.05  -12074.93     0.06
 21   3.0304  40230.94     0.00  -18018.27     0.06
 22   3.0304  40229.54     0.03  -18018.66    -0.14
 23   3.0305  40228.20     0.12  -18018.69     0.04
 24   3.0305  40226.72     0.06  -18018.96    -0.03
 25   3.0959  37350.45     0.34  -18433.63    -0.06
 26   3.0959  37349.06     0.38  -18433.45     0.35
 27   3.0960  37345.84    -0.00  -18434.18     0.07
 28   3.1751  34402.11    -0.18  -19005.69     0.32
 29   3.1751  34401.20 (  -0.12) -19005.76 (   0.50)
 30   3.1752  34400.22    -0.12  -19006.29     0.22
 31   3.1752  34399.37    -0.00  -19006.39     0.38
 32   3.8248  57775.87     0.13  -22892.97    -0.08
 33   3.8249  57776.83    -0.03  -22893.21     0.02
 34   3.8250  57777.42     0.00  -22893.60    -0.20
 35   3.8303  57860.02    -0.16  -22918.34     0.05
 36   3.8304  57860.84     0.16  -22918.46     0.10
 37   3.8304  57860.85    -0.32  -22918.56     0.18
 38   3.8304  57861.67     0.02  -22918.88     0.03
 39   3.9724  56363.45    -0.13  -23640.83    -0.13
 40   3.9724  56362.24    -0.11  -23641.14    -0.23
 41   3.9724  56361.04    -0.09  -23641.14    -0.02
 42   3.9725  56359.77    -0.13  -23641.47    -0.13
 43   3.9779  56179.18    -0.11  -23671.62    -0.13
 44   3.9779  56177.91    -0.09  -23671.84    -0.13
 45   3.9779  56176.64    -0.05  -23672.08    -0.16
 46   3.9780  56175.33    -0.06  -23672.31    -0.16
 47   4.0052  55169.13 (   0.03) -23826.49 (   0.70)
 48   4.0052  55167.99     0.24  -23827.17     0.22
 49   4.0052  55166.36    -0.02  -23827.34     0.26
 50   4.0053  55165.19     0.18  -23827.66     0.14
 51   4.0460  53438.78    -0.00  -24068.74    -0.04
 52   4.0460  53437.18    -0.05  -24068.97    -0.05
 53   4.0461  53435.74     0.05  -24069.18    -0.06
 54   4.0461  53434.15     0.01  -24069.42    -0.08
 55   4.0489  53310.38     0.10  -24086.18    -0.05
 56   4.0489  53308.78     0.09  -24086.25     0.11
 57   4.0489  53307.04    -0.05  -24086.53     0.04
 58   4.0490  53305.51     0.02  -24086.78     0.02
 59   4.1909  47589.02     0.09  -24978.55    -0.14
 60   4.1909  47588.04     0.06  -24978.74    -0.12
 61   4.1909  47587.13     0.10  -24978.98    -0.14
 62   4.1910  47586.11     0.04  -24979.18    -0.12
 63   4.3579  47203.44    -0.34  -26012.09    -0.22
 64   4.3579  47204.17     0.03  -26012.17    -0.22
 65   4.3579  47204.33    -0.16  -26012.15    -0.11
 66   6.2522  73679.11     0.14  -37132.58     0.15
 67   6.2524  73675.72    -0.04  -37133.17     0.23

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.

14WZ508    quality flag:3

Type:       CENTAURR  CENTAURR  CENTAURR

axisobj        78.609    78.637    78.581
ecceobj         0.701     0.701     0.701
incobj         24.233    24.233    24.233
qmin           22.787    22.693    22.704
qmax          136.301   135.414   138.073
amean          74.879    76.085    76.439
amin           70.726    72.614    67.377
amax           79.828    80.188    80.712
emean           0.682     0.689     0.689
emin            0.649     0.668     0.624
emax            0.707     0.706     0.711
imean          25.957    25.582    25.762
imin           24.578    24.414    24.416
imax           29.133    28.393    29.726
excite_mean     0.811     0.813     0.815
fracstop        0.296     0.311     0.311
cjmean          2.472     2.470     2.468

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       195.6     194.6     196.7
kozaiamp         40.6      41.3      43.9