Orbit Fit and Astrometric record for 15BP519

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: 15BP519   
# Created Fri Dec  3 02:13:11 2021
# Orbit generated from Bernstein formalism
# Fitting     89 observations of     89
# Arc:   4.82y
# First observation: 2014/02/10
#  Last observation: 2018/12/06
Preliminary a, adot, b, bdot, g, gdot:
  -0.001229   0.017787   0.000246   0.000217   0.018830   0.000000
# Chi-squared of fit:     3.37 DOF:    172 RMS:  0.03
# Min/Max residuals:    -0.10    0.18
# Exact a, adot, b, bdot, g, gdot:
  1.463406E-05  1.649039E-02  2.715608E-07  3.005157E-04  1.796572E-02 -1.258151E-02
# Covariance matrix:
  1.7970E-13 -1.4334E-13 -2.3433E-14  8.3229E-15 -6.7978E-14 -1.3230E-12
 -1.4334E-13  1.3574E-13  2.1772E-14 -8.9561E-15  6.0469E-14  1.3455E-12
 -2.3433E-14  2.1772E-14  6.6217E-14 -2.1666E-14  2.4982E-14  2.5216E-13
  8.3229E-15 -8.9561E-15 -2.1666E-14  1.0685E-14 -1.6721E-15 -9.2286E-14
 -6.7978E-14  6.0469E-14  2.4982E-14 -1.6721E-15  8.8303E-14  7.2550E-13
 -1.3230E-12  1.3455E-12  2.5216E-13 -9.2286E-14  7.2550E-13  1.4495E-11
#      lat0       lon0       xBary       yBary       zBary        JD0
  -54.019905   46.422259   -0.981129    0.065451    0.047336  2456698.607988
# Heliocentric elements and errors
Epoch:              2456690.5000  =  2014/02/02
Mean Anomaly:          358.45727 +/-     0.009
Argument of Peri:      347.79931 +/-     0.005
Long of Asc Node:      135.34790 +/-     0.000
Inclination:            54.10684 +/-     0.000
Eccentricity:         0.92597873 +/-    0.0003
Semi-Major Axis:    476.61789866 +/-    1.7825
Time of Perihelion: 2472977.5214 +/-       1.8
Perihelion:          35.27986403 +/-    0.1899
Aphelion:           917.95593330 +/-    3.4357
Period (y)            10405.5185 +/-     58.37
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           21.77406958 +/-    0.0004
Ecliptic Y           24.31075683 +/-    0.0004
Ecliptic Z          -45.04256249 +/-    0.0007
Ecliptic XDOT        -0.00257736 +/-    0.0000
Ecliptic YDOT         0.00094035 +/-    0.0000
Ecliptic ZDOT         0.00157859 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   55.62333538 +/-    0.0006
Geocenter to KBO     55.66157369 +/-    0.0009
# Hcoef:  4.34

The following table shows the complete astrometric record for 15BP519. 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 (15BP519) followed by the observatory code and reference code for the source of the astrometry.

2014 02  10.10721  04 01 31.614  -34 58 11.99  21.7Y 15BP519   W84  C~4yW0      
2014 11  27.328420 04 09 43.643  -35 15 45.73  22.7g 15BP519   W84  C~2dZL      
2014 11  27.32842  04 09 43.64   -35 15 45.7   22.7g 15BP519   W84  C~3cqt      
2014 11  27.32842  04 09 43.643  -35 15 45.73  22.7g 15BP519   W84  C~4yW0      
2014 11  27.33115  04 09 43.632  -35 15 45.72  21.5i 15BP519   W84  C~4yW0      
2014 11  27.33115  04 09 43.63   -35 15 45.7   21.6i 15BP519   W84  C~3cqt      
2014 11  27.331152 04 09 43.632  -35 15 45.73  21.6i 15BP519   W84  C~2dZL      
2015 01  17.18674  04 06 29.036  -34 57 37.79  21.6r 15BP519   W84  C~4yW0      
2015 01  17.18674  04 06 29.04   -34 57 37.8   21.7r 15BP519   W84  C~3cqt      
2015 01  17.18951  04 06 29.027  -34 57 37.66  22.6g 15BP519   W84  C~4yW0      
2015 01  17.18951  04 06 29.03   -34 57 37.7   22.7g 15BP519   W84  C~3cqt      
2015 01  17.19087  04 06 29.02   -34 57 37.6   21.5i 15BP519   W84  C~3cqt      
2015 01  17.190874 04 06 29.023  -34 57 37.62  21.5i 15BP519   W84  C~2dZL      
2015 01  26.132506 04 06 10.100  -34 50 52.46  21.8r 15BP519   W84  C~2dZL      
2015 01  26.13251  04 06 10.101  -34 50 52.46  21.7r 15BP519   W84  C~4yW0      
2015 01  26.13251  04 06 10.10   -34 50 52.5   21.8r 15BP519   W84  C~3cqt      
2015 01  27.08971  04 06 08.458  -34 50 06.42  21.2z 15BP519   W84  C~4yW0      
2015 01  27.08971  04 06 08.46   -34 50 06.4   21.4z 15BP519   W84  C~3cqt      
2015 01  27.089717 04 06 08.458  -34 50 06.41  21.4z 15BP519   W84  C~2dZL      
2015 01  28.10786  04 06 06.792  -34 49 16.79  21.3z 15BP519   W84  C~4yW0      
2015 01  28.10786  04 06 06.79   -34 49 16.8   21.4z 15BP519   W84  C~3cqt      
2015 01  28.107865 04 06 06.791  -34 49 16.78  21.4z 15BP519   W84  C~2dZL      
2015 01  28.120828 04 06 06.768  -34 49 16.16  21.6i 15BP519   W84  C~2dZL      
2015 01  28.12083  04 06 06.768  -34 49 16.17  21.5i 15BP519   W84  C~4yW0      
2015 01  28.12083  04 06 06.77   -34 49 16.2   21.6i 15BP519   W84  C~3cqt      
2015 01  30.11816  04 06 03.754  -34 47 37.39  21.5i 15BP519   W84  C~4yW0      
2015 01  30.11816  04 06 03.75   -34 47 37.4   21.5i 15BP519   W84  C~3cqt      
2015 01  30.118166 04 06 03.753  -34 47 37.38  21.5i 15BP519   W84  C~2dZL      
2015 02  01.04691  04 06 01.172  -34 46 00.20  21.1z 15BP519   W84  C~4yW0      
2015 02  01.04691  04 06 01.17   -34 46 00.2   21.1z 15BP519   W84  C~3cqt      
2015 02  01.046916 04 06 01.172  -34 46 00.19  21.1z 15BP519   W84  C~2dZL      
2015 02  10.10854  04 05 53.273  -34 38 03.05  21.7r 15BP519   W84  C~4yW0      
2015 02  10.10854  04 05 53.27   -34 38 03.0   21.8r 15BP519   W84  C~3cqt      
2015 02  10.108548 04 05 53.273  -34 38 03.04  21.8r 15BP519   W84  C~2dZL      
2015 02  11.05026  04 05 52.874  -34 37 11.82  21.7r 15BP519   W84  C~4yW0      
2015 02  11.05026  04 05 52.87   -34 37 11.8   21.8r 15BP519   W84  C~3cqt      
2015 02  11.050261 04 05 52.874  -34 37 11.82  21.8r 15BP519   W84  C~2dZL      
2015 02  12.119798 04 05 52.501  -34 36 13.18  22.5g 15BP519   W84  C~2dZL      
2015 02  12.11980  04 05 52.501  -34 36 13.19  22.4g 15BP519   W84  C~4yW0      
2015 02  12.11980  04 05 52.50   -34 36 13.2   22.5g 15BP519   W84  C~3cqt      
2015 11  20.33616  04 14 48.579  -34 53 15.70  21.6r 15BP519   W84  C~4yW0      
2015 11  20.33616  04 14 48.58   -34 53 15.7   21.7r 15BP519   W84  C~3cqt      
2015 11  20.336164 04 14 48.578  -34 53 15.69  21.7r 15BP519   W84  C~2dZL      
2015 11  20.350643 04 14 48.517  -34 53 15.83  21.5i 15BP519   W84  C~2dZL      
2015 11  20.35065  04 14 48.516  -34 53 15.83  21.5i 15BP519   W84  C~4yW0      
2015 11  20.35065  04 14 48.52   -34 53 15.8   21.5i 15BP519   W84  C~3cqt      
2015 12  09.28438  04 13 22.092  -34 53 31.67  22.4g 15BP519   W84  C~4yW0      
2015 12  09.28438  04 13 22.09   -34 53 31.7   22.5g 15BP519   W84  C~3cqt      
2015 12  09.284381 04 13 22.092  -34 53 31.66  22.5g 15BP519   W84  C~2dZL      
2016 02  05.070805 04 10 23.110  -34 21 18.95  21.6r 15BP519   W84  C~2dZL      
2016 02  05.07081  04 10 23.109  -34 21 18.95  21.4r 15BP519   W84  C~4yW0      
2016 02  05.07081  04 10 23.11   -34 21 19.0   21.6r 15BP519   W84  C~3cqt      
2016 02  05.072194 04 10 23.109  -34 21 18.92  22.3g 15BP519   W84  C~2dZL      
2016 02  05.07220  04 10 23.104  -34 21 18.93  22.0g 15BP519   W84  C~4yW0      
2016 02  05.07220  04 10 23.11   -34 21 18.9   22.3g 15BP519   W84  C~3cqt      
2016 11  17.28184  04 19 35.244  -34 29 48.49  21.2Y 15BP519   W84  C~4yW0      
2016 12  02.24481  04 18 26.319  -34 31 14.85  21.2i 15BP519   W84  C~4yW0      
2016 12  02.24481  04 18 26.32   -34 31 14.8   21.3i 15BP519   W84  C~3cqt      
2016 12  02.24619  04 18 26.315  -34 31 14.87  21.5r 15BP519   W84  C~4yW0      
2016 12  02.24619  04 18 26.31   -34 31 14.9   21.6r 15BP519   W84  C~3cqt      
2016 12  02.247576 04 18 26.301  -34 31 14.93  22.1g 15BP519   W84  C~2dZL      
2017 01  18.19247  04 15 25.170  -34 12 35.85  21.4z 15BP519   W84  C~4yW0      
2017 01  18.19247  04 15 25.17   -34 12 35.8   21.3z 15BP519   W84  C~3cqt      
2017 02  02.14779  04 14 56.001  -34 00 36.19  21.6r 15BP519   W84  C~4yW0      
2017 02  02.14779  04 14 56.00   -34 00 36.2   21.7r 15BP519   W84  C~3cqt      
2017 02  02.14916  04 14 55.997  -34 00 36.11  21.3i 15BP519   W84  C~4yW0      
2017 02  02.14916  04 14 56.00   -34 00 36.1   21.3i 15BP519   W84  C~3cqt      
2017 02  02.15053  04 14 55.993  -34 00 36.06  22.6g 15BP519   W84  C~4yW0      
2017 02  02.15053  04 14 55.99   -34 00 36.1   22.6g 15BP519   W84  C~3cqt      
2017 02  18.025400 04 14 46.203  -33 46 01.12  21.6r 15BP519   W84  C~2dZL      
2017 02  18.02540  04 14 46.20   -33 46 01.1   21.6r 15BP519   W84  C~3cqt      
2017 02  18.02540  04 14 46.203  -33 46 01.13  21.5r 15BP519   W84  C~4yW0      
2017 02  18.06246  04 14 46.203  -33 45 59.01  21.6r 15BP519   W84  C~4yW0      
2017 02  18.06246  04 14 46.20   -33 45 59.0   21.7r 15BP519   W84  C~3cqt      
2017 08  06.398316 04 26 32.994  -32 54 57.90        15BP519   W84  C~2dZL      
2017 08  07.379034 04 26 35.748  -32 55 39.39        15BP519   W84  C~2dZL      
2017 08  07.419462 04 26 35.856  -32 55 41.20        15BP519   W84  C~2dZL      
2017 12  06.25847  04 22 48.708  -34 06 56.97  21.1z 15BP519   W84  C~4yW0      
2017 12  11.290180 04 22 25.549  -34 06 20.62  21.6r 15BP519   W84  C~2dZL      
2017 12  11.29018  04 22 25.549  -34 06 20.65  21.5r 15BP519   W84  C~4yW0      
2018 01  10.137691 04 20 25.824  -33 54 22.64  22.4g 15BP519   W84  C~2dZL      
2018 01  24.097471 04 19 47.591  -33 44 28.93  21.2z 15BP519   W84  C~2dZL      
2018 01  24.09748  04 19 47.591  -33 44 28.93  21.2z 15BP519   W84  C~4yW0      
2018 02  15.101904 04 19 19.707  -33 25 05.52  22.3g 15BP519   W84  C~2dZL      
2018 10  22.37760  04 30 47.319  -33 28 23.71  20.9Y 15BP519   W84  C~4yW0      
2018 11  29.321059 04 28 06.616  -33 41 33.85  21.5r 15BP519   W84  C~3suY      
2018 11  29.32106  04 28 06.613  -33 41 33.85  21.5r 15BP519   W84  C~4yW0      
2018 12  06.05245  04 27 34.932  -33 41 32.72  22.3g 15BP519   W84  C~4yW0      
2018 12  06.052460 04 27 34.932  -33 41 32.75  22.3g 15BP519   W84  C~3suY      

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    -0.02       0.00    -0.00
     2   0.7946   5306.70    -0.03   -3068.62    -0.00
     3   0.7946   5306.70    -0.03   -3068.62    -0.00
     4   0.7946   5306.67    -0.05   -3068.58     0.04
     5   0.7946   5306.56    -0.02   -3068.54     0.03
     6   0.7946   5306.57    -0.00   -3068.56     0.01
     7   0.7946   5306.57    -0.01   -3068.57    -0.00
     8   0.9338   3449.64     0.03   -1212.67    -0.00
     9   0.9338   3449.68     0.07   -1212.70    -0.03
    10   0.9338   3449.60     0.03   -1212.56    -0.04
    11   0.9338   3449.58     0.01   -1212.51     0.01
    12   0.9338   3449.52    -0.03   -1212.43     0.03
    13   0.9338   3449.54    -0.01   -1212.46    -0.00
    14   0.9583   3371.23     0.01    -751.71     0.00
    15   0.9583   3371.24     0.02    -751.72    -0.00
    16   0.9583   3371.22    -0.01    -751.75    -0.03
    17   0.9609   3368.17    -0.01    -701.52    -0.05
    18   0.9609   3368.20     0.02    -701.51    -0.04
    19   0.9609   3368.17    -0.01    -701.51    -0.04
    20   0.9637   3366.06     0.02    -647.85    -0.01
    21   0.9637   3366.03    -0.00    -647.85    -0.01
    22   0.9637   3366.05     0.02    -647.83     0.00
    23   0.9638   3366.00    -0.01    -647.15    -0.01
    24   0.9638   3366.01     0.00    -647.20    -0.05
    25   0.9638   3365.99    -0.01    -647.16    -0.02
    26   0.9692   3365.21    -0.05    -541.62     0.00
    27   0.9692   3365.26     0.00    -541.63    -0.01
    28   0.9692   3365.26    -0.01    -541.61     0.01
    29   0.9745   3368.93     0.05    -439.41    -0.00
    30   0.9745   3368.96     0.08    -439.42    -0.01
    31   0.9745   3368.96     0.08    -439.41    -0.00
    32   0.9993   3442.14    -0.04      42.17     0.07
    33   0.9993   3442.16    -0.03      42.11     0.01
    34   0.9993   3442.16    -0.02      42.12     0.02
    35   1.0019   3455.16    -0.02      91.94     0.02
    36   1.0019   3455.20     0.02      91.90    -0.01
    37   1.0019   3455.20     0.02      91.90    -0.01
    38   1.0048   3471.11     0.02     148.54     0.08
    39   1.0048   3471.09     0.00     148.53     0.07
    40   1.0048   3471.10     0.02     148.53     0.07
    41   1.7748   9290.68    -0.02   -3157.20    -0.00
    42   1.7748   9290.66    -0.03   -3157.20     0.00
    43   1.7748   9290.66    -0.04   -3157.18     0.01
    44   1.7748   9289.91     0.02   -3157.04    -0.01
    45   1.7748   9289.95     0.07   -3157.02     0.00
    46   1.7748   9289.89     0.01   -3157.03    -0.01
    47   1.8266   8291.68    -0.06   -2784.00    -0.03
    48   1.8266   8291.71    -0.02   -2783.98    -0.01
    49   1.8266   8291.72    -0.02   -2783.97    -0.00
    50   1.9848   6920.74    -0.02    -185.16     0.01
    51   1.9848   6920.72    -0.03    -185.21    -0.04
    52   1.9848   6920.73    -0.03    -185.16     0.01
    53   1.9848   6920.74    -0.03    -185.13    -0.04
    54   1.9848   6920.76    -0.01    -185.12    -0.02
    55   1.9848   6920.68    -0.09    -185.12    -0.02
    56   2.7684  13107.69     0.18   -3164.37     0.05
    57   2.8094  12282.31     0.02   -2923.78     0.06
    58   2.8094  12282.28    -0.01   -2923.83     0.02
    59   2.8094  12282.15    -0.06   -2923.83    -0.02
    60   2.8094  12282.22     0.01   -2923.83    -0.01
    61   2.8094  12282.04    -0.10   -2923.82    -0.04
    62   2.9379  10607.62     0.01   -1050.07     0.05
    63   2.9379  10607.60    -0.00   -1050.12     0.01
    64   2.9789  10533.81     0.02    -246.72    -0.02
    65   2.9789  10533.83     0.04    -246.72    -0.02
    66   2.9789  10533.85     0.05    -246.63    -0.00
    67   2.9789  10533.81     0.02    -246.62    -0.00
    68   2.9789  10533.73    -0.07    -246.58    -0.03
    69   2.9789  10533.78    -0.02    -246.56    -0.01
    70   3.0224  10740.59     0.03     613.56    -0.00
    71   3.0224  10740.57     0.01     613.60     0.04
    72   3.0224  10740.60     0.03     613.57     0.01
    73   3.0225  10741.34    -0.02     615.56     0.01
    74   3.0225  10741.37     0.01     615.53    -0.01
    75   3.4861  20151.61    -0.01      96.42    -0.01
    76   3.4888  20167.42     0.04      44.42     0.03
    77   3.4889  20167.97    -0.01      42.22    -0.03
    78   3.8197  15859.88     0.08   -2807.66    -0.02
    79   3.8335  15606.60     0.00   -2663.29     0.00
    80   3.8335  15606.61     0.01   -2663.26     0.03
    81   3.9152  14496.73    -0.05   -1428.96     0.01
    82   3.9534  14278.43    -0.03    -697.51    -0.04
    83   3.9534  14278.43    -0.03    -697.51    -0.04
    84   4.0137  14393.59    -0.00     514.46    -0.00
    85   4.6962  22311.06     0.02   -3028.01     0.06
    86   4.8000  20131.22     0.03   -2950.41    -0.03
    87   4.8000  20131.19    -0.00   -2950.40    -0.02
    88   4.8185  19764.85    -0.03   -2792.19     0.04
    89   4.8185  19764.84    -0.04   -2792.22     0.01

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.

15BP519    quality flag:3

Type:       SCATNEAR  SCATNEAR  SCATNEAR

axisobj       488.180   493.539   482.947
ecceobj         0.927     0.928     0.927
incobj         54.100    54.100    54.100
qmin           32.829    32.755    32.728
qmax         1019.102  1025.313  1021.921
amean         459.133   459.051   462.528
amin          422.336   421.923   424.006
amax          527.210   530.371   528.663
emean           0.923     0.923     0.924
emin            0.914     0.913     0.915
emax            0.933     0.933     0.933
imean          52.737    52.739    52.719
imin           50.175    50.199    50.099
imax           55.435    55.525    55.446
excite_mean     1.219     1.219     1.219
fracstop        1.000     1.000     1.000
cjmean          1.887     1.886     1.887

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       349.5     349.3     349.5
kozaiamp          2.0       2.0       2.1