Orbit Fit and Astrometric record for 15BM518

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: 15BM518   
# Created Fri Oct 19 01:09:59 2018
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting  110 observations of  110
# Arc:   7.66y
# First observation: 2010/05/14
#  Last observation: 2018/01/10
# Chi-squared of fit:    81.57 DOF:  214 RMS:  0.15
# Min/Max residuals:    -0.56    0.45
# Exact a, adot, b, bdot, g, gdot:
  1.648899E-05  2.857804E-02  1.908087E-07 -6.315826E-04  2.774232E-02 -4.249067E-03
# Covariance matrix:
  3.6538E-13 -1.4234E-13 -8.0272E-15  3.0967E-15 -7.6849E-14 -4.5181E-13
 -1.4234E-13  6.7745E-14  3.5893E-15 -1.6462E-15  2.5988E-14  2.3177E-13
 -8.0272E-15  3.5893E-15  1.2135E-13 -2.3040E-14  3.3718E-15  1.4041E-14
  3.0967E-15 -1.6462E-15 -2.3040E-14  4.8844E-15 -6.3674E-16 -6.0469E-15
 -7.6849E-14  2.5988E-14  3.3718E-15 -6.3674E-16  5.3541E-14  1.1424E-13
 -4.5181E-13  2.3177E-13  1.4041E-14 -6.0469E-15  1.1424E-13  8.6197E-13
#      lat0       lon0       xBary       yBary       zBary        JD0
   -8.856199  164.334759   -0.941781   -0.056800   -0.364270  2455330.758896
# Heliocentric elements and errors
Epoch:              2455330.5000  =  2010/05/14
Mean Anomaly:          275.44020 +/-     0.015
Argument of Peri:        1.90614 +/-     0.011
Long of Asc Node:      262.52215 +/-     0.001
Inclination:             8.82400 +/-     0.000
Eccentricity:         0.12176831 +/-    0.0000
Semi-Major Axis:     36.29986259 +/-    0.0011
Time of Perihelion: 2474094.1512 +/-       4.5
Perihelion:          31.87968983 +/-    0.0015
Aphelion:            40.72003535 +/-    0.0017
Period (y)              218.7085 +/-      0.01
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -34.89870169 +/-    0.0003
Ecliptic Y            8.80699690 +/-    0.0001
Ecliptic Z           -5.54942979 +/-    0.0000
Ecliptic XDOT        -0.00035165 +/-    0.0000
Ecliptic YDOT        -0.00282405 +/-    0.0000
Ecliptic ZDOT         0.00000293 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   36.41818198 +/-    0.0003
Geocenter to KBO     36.04614931 +/-    0.0003
# Hcoef:  6.43

The following table shows the complete astrometric record for 15BM518. 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 (15BM518) followed by the observatory code and reference code for the source of the astrometry.

2010 05  14.25813  10 48 40.560  -02 00 46.58  21.4G 15BM518   F51  C~2kRR      
2011 01  05.66774  11 03 06.497  -03 33 48.64  22.1G 15BM518   F51  C~2kRR      
2011 03  30.37568  10 56 56.995  -03 02 58.68  21.7G 15BM518   F51  C~2kRR      
2011 03  30.39011  10 56 56.933  -03 02 58.29  21.7G 15BM518   F51  C~2kRR      
2011 03  30.40340  10 56 56.873  -03 02 57.70  21.7G 15BM518   F51  C~2kRR      
2011 04  23.26656  10 55 24.847  -02 49 44.38  22.2G 15BM518   F51  C~2kRR      
2011 06  30.27568  10 55 40.259  -02 34 43.69  22.4G 15BM518   F51  C~2kRR      
2012 03  20.35939  11 03 52.081  -03 48 53.96  21.9w 15BM518   F51  C~1vYA      
2012 03  20.37406  11 03 52.011  -03 48 53.56  22.2w 15BM518   F51  C~1vYA      
2012 03  20.38870  11 03 51.944  -03 48 52.87  22.1w 15BM518   F51  C~1vYA      
2012 03  20.40332  11 03 51.858  -03 48 52.56  22.0G 15BM518   F51  C~2kRR      
2012 11  25.61965  11 15 09.795  -04 41 10.39  22.2G 15BM518   F51  C~2kRR      
2013 02  14.49394  11 13 01.586  -04 46 47.68  21.1G 15BM518   F51  C~2kRR      
2013 02  15.47645  11 12 56.849  -04 46 24.41  21.8w 15BM518   F51  C~1vYA      
2013 02  15.49014  11 12 56.784  -04 46 24.26  22.1w 15BM518   F51  C~1vYA      
2013 02  15.50382  11 12 56.715  -04 46 23.82  22.1w 15BM518   F51  C~1vYA      
2013 02  15.51749  11 12 56.658  -04 46 23.55  22.1w 15BM518   F51  C~1vYA      
2013 12  04.61484  11 21 34.545  -05 24 45.71  22.1G 15BM518   F51  C~2kRR      
2014 02  20.51561  11 18 51.656  -05 25 11.19  22.2G 15BM518   F51  C~2kRR      
2014 03  24.39996  11 16 06.861  -05 08 23.99  21.9w 15BM518   F51  C~1vYA      
2014 03  24.41226  11 16 06.781  -05 08 23.83  22.1w 15BM518   F51  C~1vYA      
2014 03  24.42453  11 16 06.729  -05 08 23.38  21.9w 15BM518   F51  C~1vYA      
2014 03  24.43685  11 16 06.649  -05 08 22.92  22.1w 15BM518   F51  C~1vYA      
2014 03  25.40946  11 16 01.773  -05 07 48.25  21.4G 15BM518   F51  C~2kRR      
2014 04  28.30486  11 13 41.589  -04 48 13.36  22.0w 15BM518   F51  C~1vYA      
2014 04  28.30618  11 13 41.588  -04 48 13.36  22.0w 15BM518   F51  C~1vYA      
2014 04  28.31717  11 13 41.584  -04 48 12.85  21.8w 15BM518   F51  C~1vYA      
2014 04  28.31848  11 13 41.544  -04 48 13.04  21.9w 15BM518   F51  C~1vYA      
2014 04  28.32944  11 13 41.526  -04 48 12.37  22.2w 15BM518   F51  C~1vYA      
2014 04  28.33075  11 13 41.511  -04 48 12.42  22.0w 15BM518   F51  C~1vYA      
2014 04  28.34173  11 13 41.468  -04 48 11.97  22.0w 15BM518   F51  C~1vYA      
2014 04  28.34304  11 13 41.473  -04 48 12.06  21.8w 15BM518   F51  C~1vYA      
2014 05  04.30973  11 13 25.236  -04 45 12.70  21.5G 15BM518   F51  C~2kRR      
2014 05  24.26082  11 12 54.840  -04 37 07.16  22.2G 15BM518   F51  C~2kRR      
2014 05  24.27409  11 12 54.818  -04 37 06.80  21.9G 15BM518   F51  C~2kRR      
2014 05  24.28737  11 12 54.814  -04 37 06.47  22.0G 15BM518   F51  C~2kRR      
2014 05  24.30065  11 12 54.817  -04 37 06.12  21.9G 15BM518   F51  C~2kRR      
2014 11  29.61605  11 27 33.939  -06 01 35.58  22.5G 15BM518   F51  C~2kRR      
2015 01  23.49735  11 27 10.892  -06 13 41.43  22.0w 15BM518   F51  C~1vYA      
2015 01  23.50881  11 27 10.851  -06 13 41.31  22.0w 15BM518   F51  C~1vYA      
2015 01  23.52025  11 27 10.824  -06 13 41.20  22.2w 15BM518   F51  C~1vYA      
2015 01  23.53175  11 27 10.776  -06 13 41.14  22.2w 15BM518   F51  C~1vYA      
2015 01  25.49007  11 27 04.459  -06 13 26.47  22.2G 15BM518   F51  C~2kRR      
2015 01  25.50144  11 27 04.407  -06 13 26.44  22.1G 15BM518   F51  C~2kRR      
2015 01  25.51282  11 27 04.367  -06 13 26.51  21.7G 15BM518   F51  C~2kRR      
2015 01  25.52418  11 27 04.329  -06 13 26.26  22.2G 15BM518   F51  C~2kRR      
2015 02  24.44330  11 24 55.596  -06 04 27.15  21.9w 15BM518   F51  C~1vYA      
2015 02  24.45755  11 24 55.525  -06 04 26.73  21.8w 15BM518   F51  C~1vYA      
2015 02  24.47182  11 24 55.444  -06 04 26.37  21.9w 15BM518   F51  C~1vYA      
2015 02  24.48612  11 24 55.377  -06 04 26.19  21.9w 15BM518   F51  C~1vYA      
2015 02  25.46399  11 24 50.433  -06 03 59.74  21.8w 15BM518   F51  C~1vYA      
2015 02  25.47793  11 24 50.353  -06 03 59.23  22.1w 15BM518   F51  C~1vYA      
2015 02  25.49189  11 24 50.276  -06 03 58.84  22.0w 15BM518   F51  C~1vYA      
2015 02  25.50579  11 24 50.207  -06 03 58.53  21.9w 15BM518   F51  C~1vYA      
2015 03  22.39596  11 22 40.467  -05 50 43.71  21.9w 15BM518   F51  C~1vYA      
2015 03  22.40985  11 22 40.379  -05 50 43.31  21.9w 15BM518   F51  C~1vYA      
2015 03  22.42368  11 22 40.313  -05 50 42.82  21.9w 15BM518   F51  C~1vYA      
2015 03  22.43749  11 22 40.237  -05 50 42.05  22.1w 15BM518   F51  C~1vYA      
2015 03  23.42475  11 22 35.164  -05 50 07.38  21.8w 15BM518   F51  C~1vYA      
2015 03  23.43867  11 22 35.100  -05 50 06.78  21.9w 15BM518   F51  C~1vYB      
2015 03  23.45254  11 22 35.017  -05 50 06.38  21.8w 15BM518   F51  C~1vYB      
2015 03  23.46637  11 22 34.964  -05 50 05.72  21.7w 15BM518   F51  C~1vYB      
2015 04  25.34635  11 20 10.353  -05 30 40.51  21.0G 15BM518   F51  C~2kRR      
2015 05  06.30984  11 19 38.318  -05 24 58.95  21.6i 15BM518   F51  C~1vYB      
2015 05  06.32376  11 19 38.274  -05 24 58.57  21.4i 15BM518   F51  C~1vYB      
2015 05  06.35144  11 19 38.220  -05 24 57.84  21.5i 15BM518   F51  C~1vYB      
2015 12  24.65586  11 34 20.538  -06 51 19.07  22.0G 15BM518   F51  C~2kRR      
2016 01  08.57994  11 34 08.943  -06 54 08.13  22.2G 15BM518   F51  C~2kRR      
2016 01  08.59197  11 34 08.909  -06 54 08.24  21.7G 15BM518   F51  C~2kRR      
2016 01  08.60398  11 34 08.901  -06 54 08.47  21.9G 15BM518   F51  C~2kRR      
2016 01  08.61599  11 34 08.878  -06 54 08.36  21.6G 15BM518   F51  C~2kRR      
2016 01  18.51017  11 33 48.555  -06 54 28.76  21.2G 15BM518   F51  C~2kRR      
2016 01  18.51298  11 33 48.558  -06 54 28.51  21.7G 15BM518   F51  C~2kRR      
2016 01  18.52218  11 33 48.529  -06 54 28.94  20.5G 15BM518   F51  C~2kRR      
2016 01  18.52504  11 33 48.510  -06 54 29.00  20.6G 15BM518   F51  C~2kRR      
2016 01  18.53424  11 33 48.489  -06 54 28.53  20.8G 15BM518   F51  C~2kRR      
2016 01  18.53705  11 33 48.480  -06 54 28.46  21.9G 15BM518   F51  C~2kRR      
2016 01  18.54626  11 33 48.466  -06 54 28.46  21.6G 15BM518   F51  C~2kRR      
2016 01  18.54907  11 33 48.455  -06 54 28.56  21.2G 15BM518   F51  C~2kRR      
2016 01  19.58678  11 33 45.779  -06 54 26.27  22.2G 15BM518   F51  C~2kRR      
2016 01  19.59811  11 33 45.749  -06 54 26.16  22.3G 15BM518   F51  C~2kRR      
2016 01  19.60947  11 33 45.709  -06 54 26.25  21.8G 15BM518   F51  C~2kRR      
2016 01  19.62082  11 33 45.684  -06 54 26.16  22.0G 15BM518   F51  C~2kRR      
2016 01  21.55732  11 33 40.441  -06 54 19.65  22.1G 15BM518   F51  C~2kRR      
2016 02  02.52175  11 33 00.811  -06 52 40.18  21.8G 15BM518   F51  C~2kRR      
2016 02  10.48220  11 32 28.464  -06 50 38.93  22.1G 15BM518   F51  C~2kRR      
2016 02  10.49328  11 32 28.407  -06 50 38.63  21.8G 15BM518   F51  C~2kRR      
2016 02  10.50437  11 32 28.366  -06 50 38.36  22.3G 15BM518   F51  C~2kRR      
2016 02  10.51546  11 32 28.309  -06 50 38.31  22.0G 15BM518   F51  C~2kRR      
2016 02  29.42210  11 30 57.820  -06 43 15.38  22.1G 15BM518   F51  C~2kRR      
2016 03  11.42892  11 30 00.280  -06 37 37.16  21.8G 15BM518   F51  C~2kRR      
2016 04  02.32576  11 28 07.747  -06 24 47.88  22.1G 15BM518   F51  C~2kRR      
2016 04  02.33824  11 28 07.682  -06 24 47.06  22.2G 15BM518   F51  C~2kRR      
2016 04  02.35073  11 28 07.618  -06 24 46.60  22.1G 15BM518   F51  C~2kRR      
2016 04  02.36320  11 28 07.562  -06 24 46.22  22.1G 15BM518   F51  C~2kRR      
2017 02  22.44227  11 37 59.250  -07 26 58.50  22.1G 15BM518   F51  C~2kRR      
2017 02  22.45570  11 37 59.180  -07 26 58.17  21.7G 15BM518   F51  C~2kRR      
2017 02  22.46914  11 37 59.123  -07 26 57.89  21.8G 15BM518   F51  C~2kRR      
2017 02  22.48260  11 37 59.039  -07 26 57.52  21.9G 15BM518   F51  C~2kRR      
2017 02  25.52540  11 37 43.980  -07 25 40.25  21.4G 15BM518   F51  C~2kRR      
2017 03  19.32518  11 35 50.197  -07 14 25.58  21.9G 15BM518   F51  C~2kRR      
2017 03  19.33718  11 35 50.134  -07 14 25.19  21.8G 15BM518   F51  C~2kRR      
2017 03  19.34920  11 35 50.065  -07 14 24.79  21.7G 15BM518   F51  C~2kRR      
2017 03  19.36118  11 35 49.997  -07 14 24.18  21.6G 15BM518   F51  C~2kRR      
2017 03  29.34598  11 34 58.202  -07 08 28.35  22.1G 15BM518   F51  C~2kRR      
2017 03  29.35847  11 34 58.131  -07 08 28.05  21.7G 15BM518   F51  C~2kRR      
2017 03  29.37097  11 34 58.071  -07 08 27.57  22.3G 15BM518   F51  C~2kRR      
2017 03  29.38349  11 34 58.007  -07 08 27.11  22.4G 15BM518   F51  C~2kRR      
2017 11  20.61770  11 45 53.949  -07 54 14.78  22.1G 15BM518   F51  C~2kRR      
2018 01  10.61474  11 46 57.855  -08 14 38.84  22.3G 15BM518   F51  C~2kRR      

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    -0.07       0.00    -0.10
  2   0.6473      0.00     0.14       0.00    -0.33
  3   0.8764      0.00     0.01       0.00    -0.04
  4   0.8765      0.00     0.09       0.00    -0.16
  5   0.8765      0.00     0.13       0.00    -0.03
  6   0.9418      0.00     0.17       0.00     0.13
  7   1.1280      0.00    -0.03       0.00    -0.21
  8   1.8511      0.00    -0.09       0.00     0.09
  9   1.8511      0.00    -0.02       0.00    -0.02
 10   1.8511      0.00     0.10       0.00     0.16
 11   1.8512      0.00    -0.06       0.00    -0.04
 12   2.5362      0.00    -0.12       0.00     0.10
 13   2.7577      0.00     0.03       0.00    -0.21
 14   2.7604      0.00     0.00       0.00     0.13
 15   2.7604      0.00     0.04       0.00    -0.04
 16   2.7604      0.00     0.02       0.00     0.07
 17   2.7605      0.00     0.18       0.00     0.02
 18   3.5602      0.00    -0.06       0.00     0.12
 19   3.7735      0.00    -0.10       0.00    -0.21
 20   3.8608      0.00     0.27       0.00     0.12
 21   3.8608      0.00     0.02       0.00    -0.15
 22   3.8608      0.00     0.18       0.00    -0.14
 23   3.8609      0.00    -0.07       0.00    -0.12
 24   3.8635      0.00    -0.04       0.00    -0.07
 25   3.9563      0.00    -0.05       0.00     0.08
 26   3.9563      0.00    -0.00       0.00     0.03
 27   3.9564      0.00     0.45       0.00     0.20
 28   3.9564      0.00    -0.09       0.00    -0.03
 29   3.9564      0.00     0.14       0.00     0.30
 30   3.9564      0.00    -0.02       0.00     0.21
 31   3.9564      0.00    -0.16       0.00     0.31
 32   3.9564      0.00    -0.03       0.00     0.18
 33   3.9728      0.00    -0.15       0.00    -0.18
 34   4.0274      0.00     0.00       0.00    -0.19
 35   4.0274      0.00    -0.20       0.00    -0.09
 36   4.0275      0.00    -0.13       0.00    -0.01
 37   4.0275      0.00     0.04       0.00     0.08
 38   4.5458      0.00    -0.12       0.00    -0.09
 39   4.6961      0.00     0.19       0.00    -0.09
 40   4.6961      0.00     0.13       0.00    -0.05
 41   4.6961      0.00     0.28       0.00    -0.01
 42   4.6962      0.00     0.12       0.00    -0.03
 43   4.7015      0.00     0.14       0.00     0.06
 44   4.7016      0.00    -0.06       0.00     0.00
 45   4.7016      0.00    -0.08       0.00    -0.16
 46   4.7016      0.00    -0.07       0.00    -0.00
 47   4.7835      0.00     0.30       0.00     0.05
 48   4.7836      0.00     0.34       0.00     0.08
 49   4.7836      0.00     0.22       0.00     0.06
 50   4.7836      0.00     0.32       0.00    -0.14
 51   4.7863      0.00     0.30       0.00    -0.08
 52   4.7864      0.00     0.18       0.00     0.05
 53   4.7864      0.00     0.11       0.00     0.06
 54   4.7864      0.00     0.15       0.00    -0.01
 55   4.8546      0.00     0.26       0.00     0.06
 56   4.8546      0.00     0.04       0.00    -0.03
 57   4.8547      0.00     0.14       0.00    -0.03
 58   4.8547      0.00     0.08       0.00     0.25
 59   4.8574      0.00     0.02       0.00    -0.04
 60   4.8574      0.00     0.15       0.00     0.07
 61   4.8575      0.00    -0.01       0.00    -0.03
 62   4.8575      0.00     0.28       0.00     0.14
 63   4.9475      0.00    -0.56       0.00     0.23
 64   4.9776      0.00     0.22       0.00    -0.14
 65   4.9776      0.00     0.09       0.00    -0.17
 66   4.9777      0.00     0.34       0.00    -0.25
 67   5.6137      0.00    -0.20       0.00    -0.04
 68   5.6545      0.00     0.01       0.00     0.17
 69   5.6546      0.00    -0.20       0.00     0.13
 70   5.6546      0.00    -0.02       0.00    -0.03
 71   5.6546      0.00    -0.07       0.00     0.15
 72   5.6817      0.00    -0.11       0.00    -0.24
 73   5.6817      0.00     0.04       0.00     0.00
 74   5.6818      0.00    -0.03       0.00    -0.44
 75   5.6818      0.00    -0.20       0.00    -0.51
 76   5.6818      0.00    -0.16       0.00    -0.05
 77   5.6818      0.00    -0.18       0.00     0.01
 78   5.6818      0.00    -0.03       0.00    -0.00
 79   5.6818      0.00    -0.08       0.00    -0.11
 80   5.6847      0.00     0.01       0.00    -0.01
 81   5.6847      0.00     0.03       0.00     0.07
 82   5.6847      0.00    -0.11       0.00    -0.05
 83   5.6848      0.00    -0.02       0.00     0.01
 84   5.6901      0.00     0.24       0.00     0.23
 85   5.7228      0.00    -0.01       0.00     0.26
 86   5.7446      0.00     0.05       0.00    -0.08
 87   5.7447      0.00    -0.07       0.00     0.02
 88   5.7447      0.00     0.05       0.00     0.09
 89   5.7447      0.00    -0.07       0.00    -0.06
 90   5.7965      0.00    -0.27       0.00    -0.44
 91   5.8266      0.00     0.15       0.00     0.11
 92   5.8866      0.00     0.04       0.00    -0.36
 93   5.8866      0.00    -0.01       0.00     0.01
 94   5.8866      0.00    -0.05       0.00     0.01
 95   5.8867      0.00     0.04       0.00    -0.06
 96   6.7794      0.00     0.18       0.00     0.07
 97   6.7795      0.00     0.13       0.00     0.07
 98   6.7795      0.00     0.29       0.00     0.02
 99   6.7795      0.00     0.03       0.00     0.06
100   6.7879      0.00     0.27       0.00    -0.19
101   6.8475      0.00     0.09       0.00    -0.05
102   6.8476      0.00     0.11       0.00    -0.07
103   6.8476      0.00     0.04       0.00    -0.09
104   6.8476      0.00    -0.02       0.00     0.11
105   6.8750      0.00     0.08       0.00     0.08
106   6.8750      0.00    -0.01       0.00    -0.07
107   6.8751      0.00     0.06       0.00    -0.05
108   6.8751      0.00     0.07       0.00    -0.04
109   7.5219      0.00    -0.07       0.00    -0.13
110   7.6615      0.00    -0.03       0.00     0.22

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.

15BM518    quality flag:3

Type:           4:3E      4:3E      4:3E

axisobj        36.339    36.339    36.339
ecceobj         0.119     0.119     0.119
incobj          8.816     8.816     8.816
qmin           30.988    30.989    30.987
qmax           42.151    42.152    42.150
amean          36.478    36.478    36.478
amin           36.169    36.169    36.169
amax           36.793    36.793    36.794
emean           0.119     0.119     0.119
emin            0.092     0.092     0.092
emax            0.147     0.147     0.147
imean          11.207    11.207    11.207
imin            9.415     9.415     9.415
imax           13.042    13.042    13.042
excite_mean     0.228     0.228     0.228
fracstop        1.000     1.000     1.000
cjmean          2.969     2.969     2.969

libcent 0       178.6     178.7     178.6
libamp  0        37.1      37.1      37.0
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       183.2     183.2     183.1
kozaiamp        180.0     180.0     180.0