Orbit Fit and Astrometric record for 15BE568

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: 15BE568   
# Created Sat Nov 27 02:13:18 2021
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting     67 observations of     67
# Arc:   6.97y
# First observation: 2011/04/04
#  Last observation: 2018/03/22
# Chi-squared of fit:    39.11 DOF:    128 RMS:  0.14
# Min/Max residuals:    -0.40    0.46
# Exact a, adot, b, bdot, g, gdot:
  2.932140E-05  9.427552E-02  3.882680E-06  1.114806E-02  5.178978E-02 -1.521060E-02
# Covariance matrix:
  4.3272E-13 -1.4971E-13  1.6554E-14 -1.2114E-14 -7.5598E-14 -1.1934E-13
 -1.4971E-13  6.4774E-14 -8.9280E-15  6.1270E-15  2.9048E-14  6.0040E-14
  1.6554E-14 -8.9280E-15  2.0586E-13 -3.7982E-14 -2.1623E-15 -9.1201E-15
 -1.2114E-14  6.1270E-15 -3.7982E-14  7.9572E-15  3.3518E-15  6.4233E-15
 -7.5598E-14  2.9048E-14 -2.1623E-15  3.3518E-15  6.0959E-14  3.4419E-14
 -1.1934E-13  6.0040E-14 -9.1201E-15  6.4233E-15  3.4419E-14  6.3081E-14
#      lat0       lon0       xBary       yBary       zBary        JD0
  -23.220142  142.525232   -0.784316   -0.247096   -0.575903  2455655.743796
# Heliocentric elements and errors
Epoch:              2455656.5000  =  2011/04/05
Mean Anomaly:          358.37417 +/-     0.000
Argument of Peri:      303.97806 +/-     0.000
Long of Asc Node:      215.31286 +/-     0.000
Inclination:            23.73446 +/-     0.000
Eccentricity:         0.73858065 +/-    0.0000
Semi-Major Axis:     74.88422537 +/-    0.0066
Time of Perihelion: 2456725.4502 +/-      31.2
Perihelion:          19.57618569 +/-    0.0024
Aphelion:           130.19226506 +/-    0.0116
Period (y)              648.0279 +/-      0.09
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -15.05345049 +/-    0.0001
Ecliptic Y           10.55436929 +/-    0.0000
Ecliptic Z           -7.61271881 +/-    0.0000
Ecliptic XDOT        -0.00263183 +/-    0.0000
Ecliptic YDOT        -0.00425754 +/-    0.0000
Ecliptic ZDOT         0.00085866 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   19.89867323 +/-    0.0001
Geocenter to KBO     19.30896159 +/-    0.0001
# Hcoef:  9.16

The following table shows the complete astrometric record for 15BE568. 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 (15BE568) followed by the observatory code and reference code for the source of the astrometry.

2011 04  04.24303  09 09 44.568  -08 00 31.11  22.3G 15BE568   F51  C~3470      
2011 04  04.25211  09 09 44.560  -08 00 30.14  22.6G 15BE568   F51  C~3470      
2012 01  29.54275  09 39 18.509  -10 14 15.59  22.3G 15BE568   F51  C~3470      
2012 01  29.56983  09 39 18.268  -10 14 14.94  22.1G 15BE568   F51  C~3470      
2012 01  29.58329  09 39 18.141  -10 14 14.66  21.9G 15BE568   F51  C~3470      
2014 03  09.36876  10 19 47.255  -11 39 09.76  22.0G 15BE568   F51  C~3470      
2014 03  09.38107  10 19 47.152  -11 39 09.04  21.4G 15BE568   F51  C~3470      
2015 01  18.53099  10 49 14.194  -12 59 15.80  22.2G 15BE568   F51  C~3470      
2015 01  18.54327  10 49 14.133  -12 59 16.07  22.1G 15BE568   F51  C~3470      
2015 01  18.55554  10 49 14.072  -12 59 15.85  22.2G 15BE568   F51  C~3470      
2015 01  18.56785  10 49 14.008  -12 59 15.81  22.4G 15BE568   F51  C~3470      
2015 03  23.38533  10 41 18.529  -12 12 33.33  22.0G 15BE568   F51  C~3470      
2015 03  23.39596  10 41 18.466  -12 12 32.53  21.8G 15BE568   F51  C~3470      
2015 03  23.40654  10 41 18.387  -12 12 31.67  21.6G 15BE568   F51  C~3470      
2015 03  23.41716  10 41 18.305  -12 12 30.74  21.8G 15BE568   F51  C~3470      
2015 04  23.31407  10 38 29.964  -11 29 36.77  21.8G 15BE568   F51  C~3470      
2016 01  09.58959  11 12 34.967  -13 37 07.06  22.5G 15BE568   F51  C~3470      
2016 01  09.60018  11 12 34.928  -13 37 07.31  22.5G 15BE568   F51  C~3470      
2016 01  09.61100  11 12 34.907  -13 37 07.56  22.6G 15BE568   F51  C~3470      
2016 01  09.62162  11 12 34.876  -13 37 07.92  22.5G 15BE568   F51  C~3471      
2016 01  18.55558  11 12 06.083  -13 39 14.49  22.4G 15BE568   F51  C~3471      
2016 01  18.56809  11 12 06.038  -13 39 14.47  22.3G 15BE568   F51  C~3471      
2016 01  18.59311  11 12 05.928  -13 39 14.71  21.6G 15BE568   F51  C~3471      
2016 03  01.43479  11 07 23.311  -13 20 19.56  21.4G 15BE568   F51  C~3471      
2016 03  01.44552  11 07 23.202  -13 20 18.78  21.6G 15BE568   F51  C~3471      
2016 03  01.45593  11 07 23.118  -13 20 18.29  21.4G 15BE568   F51  C~3471      
2016 03  01.46633  11 07 23.021  -13 20 17.83  21.9G 15BE568   F51  C~3471      
2016 03  15.38363  11 05 29.298  -13 05 15.00  21.4G 15BE568   F51  C~3471      
2016 03  15.39548  11 05 29.203  -13 05 14.32  21.9G 15BE568   F51  C~3471      
2016 03  28.33096  11 03 49.777  -12 48 45.87  21.6G 15BE568   F51  C~3471      
2016 03  28.34258  11 03 49.707  -12 48 45.14  22.1G 15BE568   F51  C~3471      
2016 03  28.35415  11 03 49.601  -12 48 44.43  21.4G 15BE568   F51  C~3471      
2016 03  28.36573  11 03 49.512  -12 48 42.98  21.3G 15BE568   F51  C~3471      
2016 04  03.34146  11 03 07.917  -12 40 36.13  21.9G 15BE568   F51  C~3471      
2016 04  03.35275  11 03 07.847  -12 40 35.27  21.7G 15BE568   F51  C~3471      
2016 04  03.36399  11 03 07.766  -12 40 34.36  21.9G 15BE568   F51  C~3471      
2016 04  03.37525  11 03 07.703  -12 40 33.43  21.4G 15BE568   F51  C~3471      
2016 04  29.29762  11 00 58.514  -12 04 44.55  22.0G 15BE568   F51  C~3471      
2016 04  29.30923  11 00 58.470  -12 04 43.56  22.2G 15BE568   F51  C~3471      
2016 04  29.32087  11 00 58.439  -12 04 42.72  22.4G 15BE568   F51  C~3471      
2016 04  29.33248  11 00 58.401  -12 04 41.65  22.4G 15BE568   F51  C~3471      
2017 01  30.53904  11 33 45.862  -14 11 12.70  21.7G 15BE568   F51  C~3471      
2017 01  30.55067  11 33 45.782  -14 11 12.74  21.3G 15BE568   F51  C~3471      
2017 01  30.56229  11 33 45.731  -14 11 12.64  21.1G 15BE568   F51  C~3471      
2017 01  30.57391  11 33 45.686  -14 11 12.31  20.8G 15BE568   F51  C~3471      
2017 02  17.51570  11 31 55.652  -14 04 03.88  22.8G 15BE568   F51  C~3471      
2017 02  17.52818  11 31 55.534  -14 04 03.36  22.2G 15BE568   F51  C~3471      
2017 02  17.54066  11 31 55.494  -14 04 02.96  22.1G 15BE568   F51  C~3471      
2017 02  17.55312  11 31 55.393  -14 04 02.79  21.8G 15BE568   F51  C~3471      
2017 03  21.38988  11 27 45.025  -13 33 51.15  22.1G 15BE568   F51  C~3471      
2017 03  21.40108  11 27 44.930  -13 33 50.45  21.9G 15BE568   F51  C~3471      
2017 03  21.41229  11 27 44.841  -13 33 49.68  22.5G 15BE568   F51  C~3471      
2017 03  21.42350  11 27 44.748  -13 33 48.89  22.0G 15BE568   F51  C~3471      
2017 03  31.36003  11 26 28.058  -13 21 11.53  22.1G 15BE568   F51  C~3471      
2017 03  31.37188  11 26 27.963  -13 21 10.59  22.0G 15BE568   F51  C~3471      
2017 03  31.38378  11 26 27.883  -13 21 09.68  21.9G 15BE568   F51  C~3471      
2017 03  31.39564  11 26 27.784  -13 21 08.81  21.6G 15BE568   F51  C~3471      
2017 12  30.58490  11 56 39.900  -14 27 40.52  23.1G 15BE568   F51  C~3471      
2017 12  30.59588  11 56 39.925  -14 27 40.67  22.0G 15BE568   F51  C~3471      
2017 12  30.60685  11 56 39.941  -14 27 41.14  22.2G 15BE568   F51  C~3471      
2017 12  30.61785  11 56 39.952  -14 27 41.69  22.2G 15BE568   F51  C~3471      
2017 12  31.61321  11 56 41.418  -14 28 17.52  22.7G 15BE568   F51  C~3471      
2018 01  10.59533  11 56 45.572  -14 33 06.25  22.4G 15BE568   F51  C~3471      
2018 01  10.60568  11 56 45.560  -14 33 06.93  22.0G 15BE568   F51  C~3471      
2018 01  10.62638  11 56 45.540  -14 33 07.25  22.3G 15BE568   F51  C~3471      
2018 02  11.55018  11 54 59.817  -14 32 29.68  22.2G 15BE568   F51  C~3471      
2018 03  22.41926  11 50 14.478  -14 00 24.54  21.4G 15BE568   F51  C~3471      

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    -0.14       0.00    -0.06
     2   0.0000      0.00     0.14       0.00     0.19
     3   0.8222      0.00     0.24       0.00     0.02
     4   0.8222      0.00     0.01       0.00    -0.02
     5   0.8223      0.00    -0.22       0.00    -0.09
     6   2.9298      0.00     0.11       0.00     0.12
     7   2.9299      0.00     0.06       0.00    -0.03
     8   3.7927      0.00    -0.17       0.00    -0.05
     9   3.7927      0.00    -0.13       0.00    -0.27
    10   3.7928      0.00    -0.09       0.00    -0.01
    11   3.7928      0.00    -0.09       0.00     0.08
    12   3.9675      0.00    -0.21       0.00    -0.01
    13   3.9676      0.00     0.04       0.00    -0.05
    14   3.9676      0.00     0.04       0.00    -0.04
    15   3.9676      0.00     0.00       0.00     0.05
    16   4.0522      0.00    -0.03       0.00     0.00
    17   4.7675      0.00     0.08       0.00    -0.03
    18   4.7676      0.00    -0.09       0.00    -0.06
    19   4.7676      0.00     0.02       0.00    -0.08
    20   4.7676      0.00    -0.03       0.00    -0.22
    21   4.7921      0.00    -0.01       0.00    -0.07
    22   4.7921      0.00     0.09       0.00     0.04
    23   4.7922      0.00     0.01       0.00    -0.02
    24   4.9095      0.00     0.38       0.00     0.10
    25   4.9095      0.00     0.09       0.00     0.27
    26   4.9095      0.00     0.13       0.00     0.16
    27   4.9096      0.00    -0.02       0.00     0.03
    28   4.9477      0.00    -0.04       0.00     0.05
    29   4.9477      0.00    -0.01       0.00    -0.12
    30   4.9831      0.00    -0.11       0.00     0.27
    31   4.9832      0.00     0.13       0.00     0.07
    32   4.9832      0.00    -0.17       0.00    -0.15
    33   4.9832      0.00    -0.22       0.00     0.37
    34   4.9996      0.00    -0.11       0.00     0.01
    35   4.9996      0.00    -0.00       0.00    -0.07
    36   4.9996      0.00    -0.06       0.00    -0.08
    37   4.9997      0.00     0.15       0.00    -0.08
    38   5.0706      0.00     0.09       0.00    -0.06
    39   5.0707      0.00    -0.01       0.00     0.00
    40   5.0707      0.00     0.09       0.00    -0.09
    41   5.0707      0.00     0.08       0.00     0.06
    42   5.8270      0.00    -0.11       0.00     0.03
    43   5.8270      0.00    -0.40       0.00    -0.13
    44   5.8270      0.00    -0.27       0.00    -0.15
    45   5.8271      0.00    -0.04       0.00     0.06
    46   5.8762      0.00     0.10       0.00     0.02
    47   5.8762      0.00    -0.30       0.00     0.07
    48   5.8762      0.00     0.46       0.00     0.01
    49   5.8763      0.00     0.31       0.00    -0.29
    50   5.9634      0.00     0.07       0.00     0.12
    51   5.9635      0.00     0.01       0.00     0.01
    52   5.9635      0.00     0.04       0.00    -0.04
    53   5.9635      0.00     0.02       0.00    -0.07
    54   5.9907      0.00    -0.10       0.00     0.07
    55   5.9908      0.00    -0.17       0.00     0.07
    56   5.9908      0.00    -0.01       0.00     0.04
    57   5.9908      0.00    -0.15       0.00    -0.02
    58   6.7415      0.00    -0.07       0.00    -0.08
    59   6.7416      0.00     0.07       0.00     0.17
    60   6.7416      0.00     0.08       0.00     0.11
    61   6.7416      0.00     0.02       0.00    -0.03
    62   6.7443      0.00     0.09       0.00     0.13
    63   6.7717      0.00     0.05       0.00     0.31
    64   6.7717      0.00    -0.02       0.00    -0.14
    65   6.7718      0.00    -0.10       0.00    -0.00
    66   6.8592      0.00     0.11       0.00    -0.03
    67   6.9656      0.00    -0.14       0.00    -0.17

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.

15BE568    quality flag:3

Type:       CENTAURR  CENTAURR  CENTAURR

axisobj        75.688    75.686    75.690
ecceobj         0.741     0.741     0.741
incobj         23.699    23.699    23.699
qmin           18.775    18.544    18.736
qmax          137.410   135.889   133.534
amean          74.680    74.173    72.854
amin           70.177    69.196    70.102
amax           78.402    77.572    76.501
emean           0.741     0.741     0.735
emin            0.726     0.724     0.724
emax            0.754     0.752     0.746
imean          23.579    23.231    23.604
imin           23.105    22.375    23.032
imax           24.370    24.370    24.371
excite_mean     0.842     0.840     0.837
fracstop        0.072     0.069     0.067
cjmean          2.345     2.345     2.350

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       321.3     317.4     320.4
kozaiamp         18.4      14.4      17.6