Orbit Fit and Astrometric record for 501546

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: 501546    
# Created Sat Dec 16 02:36:55 2017
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting   90 observations of   90
# Arc:   6.99y
# First observation: 2010/08/19
#  Last observation: 2017/08/16
# Chi-squared of fit:    79.52 DOF:  174 RMS:  0.17
# Min/Max residuals:    -1.22    0.70
# Exact a, adot, b, bdot, g, gdot:
  1.796542E-05  3.451959E-02  3.998855E-06  7.983510E-03  3.033504E-02 -6.640345E-03
# Covariance matrix:
  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00
  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00
  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00
  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00
  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00
  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00
#      lat0       lon0       xBary       yBary       zBary        JD0
   14.145101  -52.673592   -0.323217    0.233202   -0.925557  2455427.824066
# Heliocentric elements and errors
Epoch:              2455428.5000  =  2010/08/20
Mean Anomaly:          331.24240 +/-     0.000
Argument of Peri:       97.90023 +/-     0.000
Long of Asc Node:      261.58583 +/-     0.000
Inclination:            18.69527 +/-     0.000
Eccentricity:         0.27730571 +/-    0.0000
Semi-Major Axis:     43.25998621 +/-    0.0000
Time of Perihelion: 2463730.4124 +/-       0.0
Perihelion:          31.26374506 +/-    0.0000
Aphelion:            55.25622736 +/-    0.0000
Period (y)              284.5364 +/-      0.00
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           20.22295093 +/-    0.0000
Ecliptic Y          -25.98310042 +/-    0.0000
Ecliptic Z            8.05614377 +/-    0.0000
Ecliptic XDOT         0.00201907 +/-    0.0000
Ecliptic YDOT         0.00249754 +/-    0.0000
Ecliptic ZDOT         0.00055221 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   33.89687512 +/-    0.0000
Geocenter to KBO     32.96532870 +/-    0.0000
# Hcoef:  5.81

The following table shows the complete astrometric record for 501546. 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 (501546) followed by the observatory code and reference code for the source of the astrometry.

2010 08  19.32330  20 24 37.372  -04 43 57.60  20.9r 501546    F51  C~1vXS      
2010 08  19.33469  20 24 37.316  -04 43 57.84  21.1r 501546    F51  C~1vXS      
2010 08  19.34722  20 24 37.254  -04 43 58.11  20.4i 501546    F51  C~1vXS      
2010 08  19.35835  20 24 37.189  -04 43 58.63  20.8i 501546    F51  C~1vXS      
2013 07  09.46668  20 50 30.310  -01 42 22.91  21.0w 501546    F51  C~1vXS      
2013 07  09.48174  20 50 30.233  -01 42 22.98  20.9w 501546    F51  C~1vXS      
2013 07  09.49684  20 50 30.143  -01 42 23.05  20.9w 501546    F51  C~1vXS      
2013 07  09.51195  20 50 30.071  -01 42 23.18  20.8w 501546    F51  C~1vXS      
2013 07  19.48966  20 49 36.690  -01 43 40.88  20.5i 501546    F51  C~1vXS      
2013 07  19.50126  20 49 36.621  -01 43 40.96  20.4i 501546    F51  C~1vXS      
2013 07  19.51383  20 49 36.541  -01 43 41.20  20.8r 501546    F51  C~1vXS      
2013 07  19.52448  20 49 36.491  -01 43 41.34  20.8r 501546    F51  C~1vXS      
2013 11  26.20446  20 44 42.702  -02 32 56.48  20.9w 501546    F51  C~1vXS      
2013 11  26.20934  20 44 42.717  -02 32 56.50  21.0w 501546    F51  C~1vXS      
2013 11  26.21421  20 44 42.747  -02 32 56.45  20.8w 501546    F51  C~1vXS      
2013 11  26.21909  20 44 42.763  -02 32 56.78  21.2w 501546    F51  C~1vXS      
2014 05  07.59579  21 00 35.409  -01 02 24.49  21.0w 501546    F51  C~1vXS      
2014 05  07.60043  21 00 35.409  -01 02 24.33  21.0w 501546    F51  C~1vXS      
2014 05  07.60508  21 00 35.411  -01 02 24.14  21.0w 501546    F51  C~1vXS      
2014 05  07.60972  21 00 35.416  -01 02 23.98  21.0w 501546    F51  C~1vXS      
2014 06  30.42197  20 58 45.393  -00 43 48.73  21.0w 501546    F51  C~1vXS      
2014 06  30.43452  20 58 45.325  -00 43 48.78  20.8w 501546    F51  C~1vXS      
2014 06  30.44706  20 58 45.276  -00 43 48.81  21.0w 501546    F51  C~1vXS      
2014 06  30.45964  20 58 45.216  -00 43 48.67  20.9w 501546    F51  C~1vXS      
2014 08  20.36942  20 54 09.597  -00 55 13.62  20.7w 501546    F51  C~1vXS      
2014 08  20.38217  20 54 09.525  -00 55 13.95  20.7w 501546    F51  C~1vXS      
2014 08  20.39495  20 54 09.454  -00 55 14.33  20.8w 501546    F51  C~1vXS      
2014 08  20.40773  20 54 09.382  -00 55 14.66  20.8w 501546    F51  C~1vXS      
2014 08  21.35887  20 54 04.212  -00 55 40.18  20.8w 501546    F51  C~1vXS      
2014 08  21.37173  20 54 04.137  -00 55 40.57  20.8w 501546    F51  C~1vXS      
2014 08  21.38464  20 54 04.066  -00 55 40.88  20.8w 501546    F51  C~1vXS      
2014 09  14.29037  20 52 09.122  -01 07 42.06  20.8w 501546    F51  C~1vXS      
2014 09  14.30329  20 52 09.062  -01 07 42.45  20.8w 501546    F51  C~1vXS      
2014 09  14.31626  20 52 09.013  -01 07 42.95  20.9w 501546    F51  C~1vXS      
2014 09  14.32922  20 52 08.956  -01 07 43.40  21.0w 501546    F51  C~1vXS      
2014 09  22.28873  20 51 39.689  -01 12 00.42  20.9w 501546    F51  C~1vXS      
2014 09  22.30289  20 51 39.637  -01 12 00.82  20.9w 501546    F51  C~1vXS      
2014 09  22.31712  20 51 39.593  -01 12 01.42  20.9w 501546    F51  C~1vXS      
2014 09  22.33129  20 51 39.543  -01 12 01.70  20.8w 501546    F51  C~1vXT      
2014 09  24.23784  20 51 33.384  -01 13 03.34  21.0w 501546    F51  C~1vXT      
2014 09  24.25200  20 51 33.344  -01 13 03.71  20.9w 501546    F51  C~1vXT      
2014 09  24.26617  20 51 33.292  -01 13 04.26  20.9w 501546    F51  C~1vXT      
2014 09  24.28039  20 51 33.250  -01 13 04.72  20.9w 501546    F51  C~1vXT      
2015 06  11.51824  21 07 28.176  +00 11 42.45  20.6i 501546    F51  C~1vXT      
2015 06  11.53110  21 07 28.140  +00 11 42.80  20.7i 501546    F51  C~1vXT      
2015 06  11.54405  21 07 28.096  +00 11 42.95  20.6i 501546    F51  C~1vXT      
2015 06  11.55691  21 07 28.063  +00 11 43.27  20.7i 501546    F51  C~1vXT      
2015 06  12.53965  21 07 25.333  +00 12 00.15  20.6i 501546    F51  C~1vXT      
2015 06  12.55269  21 07 25.298  +00 12 00.43  20.7i 501546    F51  C~1vXT      
2015 06  12.56573  21 07 25.262  +00 12 00.58  20.7i 501546    F51  C~1vXT      
2015 06  12.57879  21 07 25.227  +00 12 00.88  20.6i 501546    F51  C~1vXT      
2015 06  15.52972  21 07 16.462  +00 12 47.57  21.0w 501546    F51  C~1vXT      
2015 06  15.54210  21 07 16.418  +00 12 47.77  20.9w 501546    F51  C~1vXT      
2015 06  15.55477  21 07 16.380  +00 12 47.93  21.0w 501546    F51  C~1vXT      
2015 06  15.56731  21 07 16.338  +00 12 48.09  20.9w 501546    F51  C~1vXT      
2015 06  21.48615  21 06 56.337  +00 14 02.81  20.9w 501546    F51  C~1vXT      
2015 06  21.49806  21 06 56.289  +00 14 02.91  20.8w 501546    F51  C~1vXT      
2015 06  21.51007  21 06 56.243  +00 14 03.19  20.9w 501546    F51  C~1vXT      
2015 06  21.52219  21 06 56.197  +00 14 03.19  20.9w 501546    F51  C~1vXT      
2015 06  24.51666  21 06 44.917  +00 14 31.28  20.9w 501546    F51  C~1vXT      
2015 06  24.52879  21 06 44.865  +00 14 31.38  20.9w 501546    F51  C~1vXT      
2015 06  24.54090  21 06 44.817  +00 14 31.46  20.9w 501546    F51  C~1vXT      
2015 06  24.55309  21 06 44.770  +00 14 31.59  20.9w 501546    F51  C~1vXT      
2015 06  27.47798  21 06 33.054  +00 14 52.61  20.5i 501546    F51  C~1vXT      
2015 06  27.48994  21 06 33.000  +00 14 52.75  20.5i 501546    F51  C~1vXT      
2015 06  27.50197  21 06 32.948  +00 14 52.80  20.5i 501546    F51  C~1vXT      
2015 06  27.51404  21 06 32.902  +00 14 52.88  20.6i 501546    F51  C~1vXT      
2015 07  08.52682  21 05 43.233  +00 15 16.56  20.5i 501546    F51  C~1vXT      
2015 07  08.53949  21 05 43.174  +00 15 16.60  20.5i 501546    F51  C~1vXT      
2015 07  08.55236  21 05 43.110  +00 15 16.47  20.6i 501546    F51  C~1vXT      
2015 07  08.56499  21 05 43.035  +00 15 16.43  20.6i 501546    F51  C~1vXT      
2015 07  12.44816  21 05 23.723  +00 15 03.93  20.8w 501546    F51  C~1vXT      
2015 07  12.46100  21 05 23.656  +00 15 03.85  20.9w 501546    F51  C~1vXT      
2015 07  12.47381  21 05 23.588  +00 15 03.76  20.9w 501546    F51  C~1vXT      
2015 07  12.48671  21 05 23.521  +00 15 03.74  20.8w 501546    F51  C~1vXT      
2015 07  15.42408  21 05 08.376  +00 14 47.15  20.8w 501546    F51  C~1vXT      
2015 07  15.43601  21 05 08.310  +00 14 47.12  20.8w 501546    F51  C~1vXT      
2015 07  15.44805  21 05 08.247  +00 14 46.98  20.8w 501546    F51  C~1vXT      
2015 07  15.46010  21 05 08.185  +00 14 46.95  20.8w 501546    F51  C~1vXT      
2016 08  13.40132  21 10 03.281  +01 06 50.47  21.0r 501546    F51  C~1waY      
2016 08  13.41486  21 10 03.249  +01 06 50.44  20.9r 501546    F51  C~1waY      
2016 08  13.42844  21 10 03.100  +01 06 49.89  21.0r 501546    F51  C~1waY      
2017 05  27.58167  21 23 06.979  +02 03 55.31        501546    568  C~2NIX      
2017 05  27.58566  21 23 06.975  +02 03 55.47        501546    568  C~2NIX      
2017 07  04.31907  21 21 24.95   +02 15 00.4   20.2R 501546    G37  C~2IY6      
2017 07  04.37822  21 21 24.68   +02 15 00.6         501546    G37  C~2IY6      
2017 07  04.43288  21 21 24.44   +02 15 00.8         501546    G37  C~2IY6      
2017 07  19.74877  21 20 09.92   +02 14 21.4   20.4R 501546    D29  C~2Ht1      
2017 07  19.76291  21 20 09.96   +02 14 21.3   20.5R 501546    D29  C~2Ht1      
2017 08  16.33682  21 17 34.912  +02 06 17.37        501546    568  C~2NIX      

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    -0.24       0.00    -1.07
  2   0.0000      0.00     0.12       0.00     0.08
  3   0.0001      0.00     0.18       0.00     0.11
  4   0.0001      0.00     0.09       0.00    -0.15
  5   2.8888      0.00     0.01       0.00    -0.01
  6   2.8889      0.00     0.04       0.00    -0.01
  7   2.8889      0.00    -0.12       0.00    -0.01
  8   2.8889      0.00    -0.01       0.00    -0.07
  9   2.9163      0.00    -0.00       0.00    -0.00
 10   2.9163      0.00    -0.06       0.00     0.04
 11   2.9163      0.00    -0.20       0.00    -0.06
 12   2.9164      0.00    -0.05       0.00    -0.09
 13   3.2714      0.00    -0.09       0.00    -0.01
 14   3.2714      0.00    -0.17       0.00    -0.01
 15   3.2714      0.00    -0.02       0.00     0.07
 16   3.2714      0.00    -0.08       0.00    -0.24
 17   3.7160      0.00     0.03       0.00    -0.01
 18   3.7160      0.00    -0.02       0.00    -0.02
 19   3.7160      0.00    -0.04       0.00     0.00
 20   3.7160      0.00    -0.01       0.00    -0.01
 21   3.8634      0.00     0.19       0.00     0.14
 22   3.8634      0.00     0.03       0.00     0.06
 23   3.8634      0.00     0.15       0.00    -0.01
 24   3.8635      0.00     0.12       0.00     0.10
 25   4.0029      0.00     0.11       0.00    -0.09
 26   4.0029      0.00     0.10       0.00    -0.08
 27   4.0029      0.00     0.10       0.00    -0.12
 28   4.0030      0.00     0.09       0.00    -0.11
 29   4.0056      0.00     0.14       0.00    -0.09
 30   4.0056      0.00     0.08       0.00    -0.13
 31   4.0056      0.00     0.08       0.00    -0.09
 32   4.0711      0.00     0.09       0.00     0.15
 33   4.0711      0.00    -0.01       0.00     0.17
 34   4.0712      0.00     0.05       0.00     0.09
 35   4.0712      0.00     0.00       0.00     0.06
 36   4.0930      0.00     0.10       0.00     0.11
 37   4.0930      0.00     0.05       0.00     0.17
 38   4.0931      0.00     0.12       0.00     0.03
 39   4.0931      0.00     0.10       0.00     0.21
 40   4.0983      0.00     0.04       0.00     0.06
 41   4.0984      0.00     0.13       0.00     0.14
 42   4.0984      0.00     0.04       0.00     0.05
 43   4.0984      0.00     0.10       0.00     0.05
 44   4.8109      0.00     0.11       0.00    -0.03
 45   4.8110      0.00     0.11       0.00     0.10
 46   4.8110      0.00     0.00       0.00     0.02
 47   4.8110      0.00     0.05       0.00     0.11
 48   4.8137      0.00     0.03       0.00     0.02
 49   4.8138      0.00     0.08       0.00     0.08
 50   4.8138      0.00     0.12       0.00     0.01
 51   4.8138      0.00     0.17       0.00     0.09
 52   4.8219      0.00     0.11       0.00     0.03
 53   4.8220      0.00     0.04       0.00     0.05
 54   4.8220      0.00     0.09       0.00     0.02
 55   4.8220      0.00     0.06       0.00    -0.01
 56   4.8382      0.00     0.10       0.00    -0.04
 57   4.8383      0.00     0.05       0.00    -0.07
 58   4.8383      0.00     0.03       0.00     0.09
 59   4.8383      0.00     0.02       0.00    -0.04
 60   4.8465      0.00     0.08       0.00    -0.02
 61   4.8466      0.00     0.02       0.00    -0.02
 62   4.8466      0.00     0.03       0.00    -0.04
 63   4.8466      0.00     0.06       0.00    -0.01
 64   4.8546      0.00     0.08       0.00    -0.05
 65   4.8547      0.00     0.03       0.00     0.01
 66   4.8547      0.00     0.01       0.00    -0.01
 67   4.8547      0.00     0.09       0.00    -0.01
 68   4.8849      0.00     0.15       0.00     0.07
 69   4.8849      0.00     0.21       0.00     0.14
 70   4.8850      0.00     0.21       0.00     0.03
 71   4.8850      0.00     0.03       0.00     0.01
 72   4.8956      0.00     0.08       0.00    -0.03
 73   4.8957      0.00     0.07       0.00    -0.05
 74   4.8957      0.00     0.05       0.00    -0.08
 75   4.8957      0.00     0.05       0.00    -0.04
 76   4.9038      0.00     0.01       0.00    -0.09
 77   4.9038      0.00    -0.02       0.00    -0.04
 78   4.9038      0.00    -0.01       0.00    -0.10
 79   4.9039      0.00     0.03       0.00    -0.05
 80   5.9852      0.00    -0.00       0.00    -0.09
 81   5.9852      0.00     0.70       0.00     0.21
 82   5.9852      0.00    -0.35       0.00    -0.01
 83   6.7714      0.00     0.06       0.00    -0.16
 84   6.7714      0.00     0.06       0.00    -0.12
 85   6.8747      0.00     0.20       0.00     0.09
 86   6.8749      0.00     0.11       0.00     0.09
 87   6.8750      0.00     0.18       0.00     0.11
 88   6.9170      0.00    -1.22       0.00    -0.06
 89   6.9170      0.00     0.52       0.00    -0.04
 90   6.9925      0.00     0.16       0.00    -0.10

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.

501546    quality flag:2

Type:       SCATNEAR  CENTAURS  CENTAURS

axisobj        43.004    43.003    43.004
ecceobj         0.275     0.275     0.275
incobj         18.734    18.734    18.734
qmin           30.239    29.714    29.747
qmax           56.782    59.786    56.928
amean          43.006    43.248    42.676
amin           42.401    42.228    41.693
amax           43.918    45.210    44.375
emean           0.244     0.268     0.260
emin            0.219     0.227     0.227
emax            0.297     0.323     0.299
imean          21.523    20.581    21.105
imin           20.081    17.525    18.874
imax           22.216    22.271    22.633
excite_mean     0.441     0.443     0.445
fracstop        1.000     1.000     1.000
cjmean          2.855     2.857     2.850

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       183.1     175.3     182.8
kozaiamp        180.0     179.9     180.0