Orbit Fit and Astrometric record for 15BP518

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: 15BP518   
# Created Tue Dec  7 02:13:15 2021
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting     92 observations of     92
# Arc:   9.89y
# First observation: 2010/06/24
#  Last observation: 2020/05/16
# Chi-squared of fit:    66.90 DOF:    178 RMS:  0.15
# Min/Max residuals:    -0.41    0.48
# Exact a, adot, b, bdot, g, gdot:
  1.598035E-05  2.476117E-02  1.429049E-07  9.950078E-04  2.458233E-02  3.579291E-03
# Covariance matrix:
  2.5025E-13 -9.5049E-14  8.9572E-15 -3.8362E-15 -3.1454E-14 -3.1820E-13
 -9.5049E-14  5.8312E-14 -2.8329E-15  2.8308E-15 -9.1277E-15  2.1599E-13
  8.9572E-15 -2.8329E-15  9.8625E-14 -1.8035E-14 -4.6298E-15 -1.2620E-14
 -3.8362E-15  2.8308E-15 -1.8035E-14  4.0554E-15 -6.5856E-16  1.1189E-14
 -3.1454E-14 -9.1277E-15 -4.6298E-15 -6.5856E-16  4.7409E-14 -2.3897E-14
 -3.1820E-13  2.1599E-13 -1.2620E-14  1.1189E-14 -2.3897E-14  8.6082E-13
#      lat0       lon0       xBary       yBary       zBary        JD0
    9.944163 -178.346748   -1.014251   -0.002013    0.011124  2455371.774846
# Heliocentric elements and errors
Epoch:              2455372.5000  =  2010/06/25
Mean Anomaly:           59.39751 +/-     0.009
Argument of Peri:      359.45357 +/-     0.010
Long of Asc Node:      104.91846 +/-     0.001
Inclination:            10.15550 +/-     0.000
Eccentricity:         0.17899487 +/-    0.0000
Semi-Major Axis:     43.46975631 +/-    0.0024
Time of Perihelion: 2438100.4082 +/-       2.9
Perihelion:          35.68889306 +/-    0.0028
Aphelion:            51.25061956 +/-    0.0035
Period (y)              286.6085 +/-      0.02
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -40.00709523 +/-    0.0004
Ecliptic Y           -2.17206226 +/-    0.0000
Ecliptic Z            7.02495207 +/-    0.0001
Ecliptic XDOT        -0.00029246 +/-    0.0000
Ecliptic YDOT        -0.00276130 +/-    0.0000
Ecliptic ZDOT         0.00017796 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   40.67710167 +/-    0.0003
Geocenter to KBO     40.67958403 +/-    0.0004
# Hcoef:  5.96

The following table shows the complete astrometric record for 15BP518. 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 (15BP518) followed by the observatory code and reference code for the source of the astrometry.

2010 06  24.27408  12 21 59.458  +08 27 39.30  22.6G 15BP518   F51  C~2rYJ      
2010 06  30.30040  12 22 04.318  +08 25 34.13  21.9G 15BP518   F51  C~2rYJ      
2010 07  01.31395  12 22 05.439  +08 25 11.16  22.4G 15BP518   F51  C~2rYJ      
2011 04  01.33756  12 31 06.766  +07 46 59.07  22.1w 15BP518   F51  C~1vYB      
2011 04  01.39761  12 31 06.478  +07 47 00.79  22.0w 15BP518   F51  C~1vYB      
2011 04  01.41185  12 31 06.411  +07 47 01.14  22.1w 15BP518   F51  C~1vYB      
2012 01  19.66053  12 40 24.951  +06 38 55.22  21.8G 15BP518   F51  C~2rYJ      
2012 04  21.42923  12 34 55.402  +07 23 40.89  22.1w 15BP518   F51  C~1vYB      
2012 04  21.44364  12 34 55.336  +07 23 41.13  22.0w 15BP518   F51  C~1vYB      
2012 04  21.45811  12 34 55.268  +07 23 41.27  22.0w 15BP518   F51  C~1vYB      
2012 04  21.47264  12 34 55.212  +07 23 41.55  22.2w 15BP518   F51  C~1vYB      
2012 04  23.43324  12 34 47.057  +07 24 20.65  22.1G 15BP518   F51  C~2rYJ      
2012 06  16.31324  12 32 33.587  +07 27 28.20  22.8G 15BP518   F51  C~2rYJ      
2013 01  11.61219  12 45 39.486  +06 05 10.91  22.8G 15BP518   F51  C~2rYJ      
2013 04  17.33286  12 40 32.409  +06 50 15.10  21.6G 15BP518   F51  C~2rYJ      
2013 04  28.31897  12 39 46.459  +06 53 55.96  21.9G 15BP518   F51  C~2rYJ      
2013 04  30.34806  12 39 38.482  +06 54 31.02  22.9G 15BP518   F51  C~2rYJ      
2014 02  10.49623  12 50 12.021  +05 45 11.41  21.7i 15BP518   F51  C~1w41      
2014 02  10.51004  12 50 12.006  +05 45 11.85  21.6i 15BP518   F51  C~1w41      
2014 02  26.56918  12 49 23.432  +05 53 24.67  22.2w 15BP518   F51  C~1vYB      
2014 02  26.58140  12 49 23.393  +05 53 25.13  22.3w 15BP518   F51  C~1vYB      
2014 02  26.59366  12 49 23.354  +05 53 25.54  22.2w 15BP518   F51  C~1vYB      
2014 02  26.60590  12 49 23.304  +05 53 25.97  22.4w 15BP518   F51  C~1vYB      
2014 02  27.49254  12 49 20.163  +05 53 54.60  22.3w 15BP518   F51  C~1w41      
2014 02  27.50481  12 49 20.117  +05 53 54.93  22.1w 15BP518   F51  C~1w41      
2014 02  27.51712  12 49 20.060  +05 53 55.39  22.4w 15BP518   F51  C~1w41      
2014 02  27.52945  12 49 20.033  +05 53 55.90  22.5w 15BP518   F51  C~1w41      
2014 04  04.37806  12 46 47.324  +06 12 42.53  21.8w 15BP518   F51  C~1w41      
2014 04  04.39205  12 46 47.255  +06 12 43.01  21.9w 15BP518   F51  C~1w41      
2014 04  23.30126  12 45 23.285  +06 20 28.13  21.9w 15BP518   F51  C~1w41      
2014 04  23.33770  12 45 23.131  +06 20 28.77  21.7w 15BP518   F51  C~1w41      
2014 04  29.25824  12 44 58.809  +06 22 21.58  22.1w 15BP518   F51  C~1vYB      
2014 04  29.27012  12 44 58.743  +06 22 21.59  22.1w 15BP518   F51  C~1vYB      
2014 04  29.28202  12 44 58.716  +06 22 21.94  21.9w 15BP518   F51  C~1vYB      
2014 04  29.29391  12 44 58.664  +06 22 22.01  21.9w 15BP518   F51  C~1vYB      
2014 05  17.39862  12 43 54.766  +06 26 07.76  21.7G 15BP518   F51  C~2rYJ      
2015 01  06.61943  12 55 49.914  +05 01 23.52  22.6G 15BP518   F51  C~2rYJ      
2015 01  19.58602  12 55 52.172  +05 04 43.85  22.2G 15BP518   F51  C~2rYJ      
2015 01  19.59956  12 55 52.176  +05 04 44.25  22.1G 15BP518   F51  C~2rYJ      
2015 01  19.61305  12 55 52.172  +05 04 44.84  22.6G 15BP518   F51  C~2rYJ      
2015 01  19.62658  12 55 52.154  +05 04 45.11  22.1G 15BP518   F51  C~2rYJ      
2015 01  21.61088  12 55 51.118  +05 05 23.70  22.3w 15BP518   F51  C~1vYB      
2015 01  21.62317  12 55 51.099  +05 05 23.70  22.3w 15BP518   F51  C~1vYB      
2015 01  21.63545  12 55 51.097  +05 05 24.04  22.2w 15BP518   F51  C~1vYB      
2015 01  21.64778  12 55 51.089  +05 05 24.41  22.4w 15BP518   F51  C~1vYB      
2015 02  18.54080  12 55 00.309  +05 17 22.17  21.9w 15BP518   F51  C~1vYB      
2015 02  18.55325  12 55 00.277  +05 17 22.57  22.0w 15BP518   F51  C~1vYB      
2015 02  18.56578  12 55 00.223  +05 17 23.01  22.2w 15BP518   F51  C~1vYB      
2015 02  18.57819  12 55 00.194  +05 17 23.21  22.3w 15BP518   F51  C~1vYB      
2015 02  19.51305  12 54 57.435  +05 17 51.74  22.0w 15BP518   F51  C~1vYB      
2015 02  19.52550  12 54 57.409  +05 17 52.22  22.2w 15BP518   F51  C~1vYB      
2015 02  19.53796  12 54 57.359  +05 17 52.57  22.0w 15BP518   F51  C~1vYB      
2015 03  23.48733  12 52 54.719  +05 34 48.09  22.2w 15BP518   F51  C~1vYB      
2015 03  23.49994  12 52 54.648  +05 34 48.52  22.2w 15BP518   F51  C~1vYB      
2015 03  23.52511  12 52 54.554  +05 34 49.38  22.0w 15BP518   F51  C~1vYB      
2015 03  24.42685  12 52 50.551  +05 35 17.56  22.4w 15BP518   F51  C~1vYB      
2015 03  24.44130  12 52 50.476  +05 35 17.75  22.2w 15BP518   F51  C~1vYB      
2015 03  24.45579  12 52 50.417  +05 35 18.43  22.2w 15BP518   F51  C~1vYB      
2015 03  24.47043  12 52 50.353  +05 35 18.85  22.2w 15BP518   F51  C~1vYB      
2015 05  21.27213  12 48 55.074  +05 54 59.15  22.8w 15BP518   F51  C~1vYB      
2015 05  21.28643  12 48 55.021  +05 54 59.32  22.0w 15BP518   F51  C~1vYB      
2015 05  21.30076  12 48 54.979  +05 54 59.03  22.4w 15BP518   F51  C~1vYB      
2015 05  21.31511  12 48 54.945  +05 54 59.59  22.2w 15BP518   F51  C~1vYB      
2016 01  24.59090  13 00 52.845  +04 35 02.54  22.5G 15BP518   F51  C~2rYJ      
2016 02  02.57043  13 00 42.574  +04 38 24.76  22.5G 15BP518   F51  C~2rYJ      
2016 02  05.58748  13 00 37.563  +04 39 40.06  22.3G 15BP518   F51  C~2rYJ      
2016 02  05.59904  13 00 37.539  +04 39 40.59  22.1G 15BP518   F51  C~2rYJ      
2016 02  05.61056  13 00 37.524  +04 39 40.78  22.8G 15BP518   F51  C~2rYJ      
2016 02  05.62210  13 00 37.513  +04 39 41.10  22.0G 15BP518   F51  C~2rYJ      
2016 02  15.65645  13 00 15.430  +04 44 15.24  21.1G 15BP518   F51  C~2rYJ      
2016 02  16.57816  13 00 13.026  +04 44 42.19  21.9G 15BP518   F51  C~2rYJ      
2017 02  25.53529  13 04 48.426  +04 18 04.59  22.7G 15BP518   F51  C~2rYJ      
2017 02  25.54672  13 04 48.385  +04 18 04.86  22.5G 15BP518   F51  C~2rYJ      
2017 02  25.55817  13 04 48.354  +04 18 04.99  22.5G 15BP518   F51  C~2rYJ      
2017 02  25.56963  13 04 48.294  +04 18 05.72  22.5G 15BP518   F51  C~2rYK      
2017 03  20.38793  13 03 21.421  +04 30 02.08  22.3G 15BP518   F51  C~2rYK      
2017 03  20.40209  13 03 21.334  +04 30 02.51  22.0G 15BP518   F51  C~2rYK      
2017 03  20.41624  13 03 21.278  +04 30 03.09  22.1G 15BP518   F51  C~2rYK      
2017 03  20.43042  13 03 21.222  +04 30 03.32  21.9G 15BP518   F51  C~2rYK      
2017 03  26.54734  13 02 54.577  +04 33 12.01  21.9G 15BP518   F51  C~2rYK      
2017 03  29.40036  13 02 41.889  +04 34 37.46  21.2G 15BP518   F51  C~2rYK      
2017 03  29.41265  13 02 41.852  +04 34 37.86  21.6G 15BP518   F51  C~2rYK      
2017 03  29.42618  13 02 41.791  +04 34 38.48  21.8G 15BP518   F51  C~2rYK      
2017 03  29.43852  13 02 41.737  +04 34 38.65  22.0G 15BP518   F51  C~2rYK      
2017 04  03.51787  13 02 18.893  +04 37 07.17  22.2G 15BP518   F51  C~2rYK      
2017 04  03.52928  13 02 18.845  +04 37 07.42  22.6G 15BP518   F51  C~2rYK      
2017 04  03.54072  13 02 18.780  +04 37 07.66  22.3G 15BP518   F51  C~2rYK      
2017 04  03.55217  13 02 18.738  +04 37 07.85  22.5G 15BP518   F51  C~2rYK      
2018 03  11.51658  13 09 01.435  +03 53 48.73  22.5G 15BP518   F51  C~2rYK      
2020 05  16.36468  13 14 19.347  +03 18 21.52  22.0w 15BP518   F52  C~3suY      
2020 05  16.37602  13 14 19.320  +03 18 21.44  21.9w 15BP518   F52  C~3suY      
2020 05  16.38726  13 14 19.285  +03 18 21.78  22.1w 15BP518   F52  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     0.03       0.00     0.10
     2   0.0165      0.00     0.02       0.00    -0.11
     3   0.0193      0.00    -0.15       0.00    -0.14
     4   0.7695      0.00    -0.05       0.00    -0.13
     5   0.7697      0.00    -0.13       0.00    -0.14
     6   0.7697      0.00    -0.13       0.00    -0.20
     7   1.5726      0.00    -0.24       0.00    -0.28
     8   1.8266      0.00     0.15       0.00     0.08
     9   1.8266      0.00     0.08       0.00     0.02
    10   1.8267      0.00    -0.01       0.00    -0.13
    11   1.8267      0.00     0.08       0.00    -0.14
    12   1.8321      0.00     0.16       0.00     0.16
    13   1.9796      0.00    -0.31       0.00    -0.18
    14   2.5526      0.00    -0.04       0.00    -0.21
    15   2.8147      0.00    -0.20       0.00     0.04
    16   2.8447      0.00    -0.03       0.00    -0.41
    17   2.8503      0.00    -0.09       0.00     0.48
    18   3.6337      0.00    -0.05       0.00     0.07
    19   3.6338      0.00     0.25       0.00     0.11
    20   3.6777      0.00     0.02       0.00     0.01
    21   3.6778      0.00     0.10       0.00     0.08
    22   3.6778      0.00     0.18       0.00     0.09
    23   3.6778      0.00     0.10       0.00     0.13
    24   3.6803      0.00     0.29       0.00     0.23
    25   3.6803      0.00     0.28       0.00     0.16
    26   3.6803      0.00     0.10       0.00     0.23
    27   3.6804      0.00     0.38       0.00     0.34
    28   3.7785      0.00    -0.06       0.00    -0.10
    29   3.7786      0.00    -0.12       0.00    -0.01
    30   3.8303      0.00     0.06       0.00     0.19
    31   3.8304      0.00     0.10       0.00     0.08
    32   3.8466      0.00     0.14       0.00     0.17
    33   3.8467      0.00    -0.12       0.00    -0.03
    34   3.8467      0.00     0.20       0.00     0.11
    35   3.8467      0.00     0.14       0.00    -0.03
    36   3.8963      0.00     0.18       0.00    -0.37
    37   4.5376      0.00    -0.26       0.00    -0.05
    38   4.5731      0.00    -0.09       0.00    -0.31
    39   4.5731      0.00     0.08       0.00    -0.17
    40   4.5731      0.00     0.12       0.00     0.16
    41   4.5732      0.00    -0.05       0.00     0.18
    42   4.5786      0.00     0.10       0.00     0.11
    43   4.5786      0.00    -0.06       0.00    -0.14
    44   4.5787      0.00     0.04       0.00    -0.05
    45   4.5787      0.00     0.05       0.00     0.08
    46   4.6551      0.00    -0.06       0.00     0.10
    47   4.6551      0.00     0.02       0.00     0.12
    48   4.6551      0.00    -0.23       0.00     0.18
    49   4.6552      0.00    -0.10       0.00     0.01
    50   4.6577      0.00    -0.16       0.00     0.17
    51   4.6578      0.00     0.02       0.00     0.27
    52   4.6578      0.00    -0.16       0.00     0.24
    53   4.7453      0.00     0.04       0.00    -0.15
    54   4.7453      0.00    -0.17       0.00    -0.11
    55   4.7454      0.00     0.13       0.00    -0.03
    56   4.7479      0.00     0.11       0.00     0.15
    57   4.7479      0.00    -0.03       0.00    -0.11
    58   4.7479      0.00     0.07       0.00     0.12
    59   4.7480      0.00     0.11       0.00     0.09
    60   4.9062      0.00     0.00       0.00     0.03
    61   4.9063      0.00    -0.16       0.00     0.12
    62   4.9063      0.00    -0.16       0.00    -0.25
    63   4.9063      0.00    -0.04       0.00     0.22
    64   5.5861      0.00     0.09       0.00     0.08
    65   5.6107      0.00    -0.17       0.00     0.06
    66   5.6189      0.00    -0.03       0.00    -0.19
    67   5.6190      0.00    -0.06       0.00     0.05
    68   5.6190      0.00     0.04       0.00    -0.06
    69   5.6190      0.00     0.20       0.00    -0.03
    70   5.6465      0.00     0.03       0.00    -0.20
    71   5.6490      0.00     0.12       0.00     0.03
    72   6.6756      0.00    -0.07       0.00     0.08
    73   6.6756      0.00    -0.12       0.00    -0.00
    74   6.6757      0.00    -0.02       0.00    -0.22
    75   6.6757      0.00    -0.35       0.00     0.16
    76   6.7382      0.00     0.20       0.00     0.01
    77   6.7382      0.00    -0.19       0.00    -0.01
    78   6.7382      0.00    -0.10       0.00     0.13
    79   6.7383      0.00    -0.02       0.00    -0.08
    80   6.7550      0.00    -0.10       0.00     0.17
    81   6.7628      0.00    -0.31       0.00    -0.19
    82   6.7629      0.00    -0.03       0.00    -0.16
    83   6.7629      0.00    -0.02       0.00     0.06
    84   6.7629      0.00     0.01       0.00    -0.14
    85   6.7768      0.00    -0.03       0.00     0.06
    86   6.7769      0.00     0.04       0.00    -0.02
    87   6.7769      0.00    -0.15       0.00    -0.10
    88   6.7769      0.00     0.00       0.00    -0.24
    89   7.7132      0.00     0.08       0.00    -0.10
    90   9.8948      0.00    -0.10       0.00     0.00
    91   9.8949      0.00     0.10       0.00    -0.20
    92   9.8949      0.00     0.18       0.00     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.

15BP518    quality flag:2

Type:         7:4EEE  SCATNEAR    7:4EEE

axisobj        43.503    43.503    43.502
ecceobj         0.181     0.181     0.181
incobj         10.150    10.150    10.150
qmin           34.033    35.289    35.334
qmax           54.024    52.670    52.547
amean          43.726    43.727    43.726
amin           43.308    43.319    43.307
amax           44.235    44.210    44.210
emean           0.165     0.152     0.158
emin            0.079     0.080     0.085
emax            0.222     0.192     0.190
imean           9.201     9.912     9.620
imin            5.898     8.221     8.225
imax           12.411    12.515    12.073
excite_mean     0.233     0.232     0.232
fracstop        1.000     1.000     1.000
cjmean          3.033     3.034     3.034

libcent 0       176.8    -180.0     169.3
libamp  0       176.1    -180.0     161.4
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       131.2     145.4     140.1
kozaiamp        180.0     180.0     180.0