Orbit Fit and Astrometric record for 531016

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: 531016    
# Created Tue Dec  7 02:08:00 2021
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting     56 observations of     56
# Arc:   9.96y
# First observation: 2011/01/25
#  Last observation: 2021/01/11
# Chi-squared of fit:    29.33 DOF:    106 RMS:  0.13
# Min/Max residuals:    -0.38    0.34
# Exact a, adot, b, bdot, g, gdot:
  1.947576E-05  3.292524E-02 -8.254059E-06 -1.632773E-02  2.842278E-02  1.085650E-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
   -0.129359  108.990706   -0.272924   -0.002139   -0.948855  2455586.859926
# Heliocentric elements and errors
Epoch:              2455586.5000  =  2011/01/25
Mean Anomaly:            1.62205 +/-     0.000
Argument of Peri:      174.02273 +/-     0.000
Long of Asc Node:      289.16380 +/-     0.000
Inclination:            26.38984 +/-     0.000
Eccentricity:         0.53189153 +/-    0.0000
Semi-Major Axis:     77.02527910 +/-    0.0000
Time of Perihelion: 2454473.9755 +/-       0.0
Perihelion:          36.05618573 +/-    0.0000
Aphelion:           117.99437248 +/-    0.0000
Period (y)              676.0178 +/-      0.00
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -12.01239171 +/-    0.0000
Ecliptic Y           34.07561409 +/-    0.0000
Ecliptic Z           -0.07974411 +/-    0.0000
Ecliptic XDOT        -0.00303284 +/-    0.0000
Ecliptic YDOT        -0.00093044 +/-    0.0000
Ecliptic ZDOT        -0.00157301 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   36.13100365 +/-    0.0000
Geocenter to KBO     35.18307188 +/-    0.0000
# Hcoef:  7.01

The following table shows the complete astrometric record for 531016. 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 (531016) followed by the observatory code and reference code for the source of the astrometry.

2011 01  25.35916  07 22 09.962  +21 57 57.15  22.0i 531016    F51  C~1w3p      
2011 01  30.30080  07 21 41.846  +21 58 06.56  22.8w 531016    F51  C~1w3p      
2011 01  30.31606  07 21 41.749  +21 58 06.49  22.5w 531016    F51  C~1w3p      
2011 01  30.33041  07 21 41.660  +21 58 06.81  22.8w 531016    F51  C~1w3p      
2012 01  24.33521  07 29 42.854  +20 45 58.36  22.1r 531016    F51  C~1w3p      
2012 01  24.34738  07 29 42.781  +20 45 58.18  22.6G 531016    F51  C~2rXr      
2012 01  25.29676  07 29 37.256  +20 46 01.79  21.8i 531016    F51  C~1w3p      
2012 01  25.31002  07 29 37.191  +20 46 01.93  21.9i 531016    F51  C~1w3p      
2013 01  17.47406  07 37 36.138  +19 32 34.29  22.4w 531016    F51  C~1w3p      
2013 01  17.48934  07 37 36.047  +19 32 34.44  22.2w 531016    F51  C~1w3p      
2013 01  17.50465  07 37 35.964  +19 32 34.28  22.4w 531016    F51  C~1w3p      
2013 01  17.52006  07 37 35.863  +19 32 34.45  22.2w 531016    F51  C~1w3p      
2013 01  21.51129  07 37 12.333  +19 32 54.30  21.6i 531016    F51  C~1w3p      
2013 02  10.40745  07 35 22.686  +19 34 28.18  22.5w 531016    F51  C~1w3p      
2013 02  10.42279  07 35 22.608  +19 34 27.72  22.8w 531016    F51  C~1w3p      
2013 02  10.43827  07 35 22.509  +19 34 28.16  22.4w 531016    F51  C~1w3p      
2013 02  10.45370  07 35 22.435  +19 34 28.25  22.3w 531016    F51  C~1w3p      
2013 12  12.63169  07 48 03.739  +18 16 37.43  22.0G 531016    F51  C~2rXr      
2013 12  15.43786  07 47 50.441  +18 16 38.68  22.5G 531016    F51  C~2rXr      
2014 01  10.57991  07 45 27.252  +18 18 06.51  21.9G 531016    F51  C~2rXr      
2014 01  26.33708  07 43 55.133  +18 19 39.99  22.0w 531016    F51  C~1w3p      
2014 01  26.34898  07 43 55.065  +18 19 40.17  22.2w 531016    F51  C~1w3p      
2015 01  13.34678  07 52 12.984  +17 03 53.52  22.9G 531016    F51  C~2rXr      
2015 01  13.36037  07 52 12.915  +17 03 53.50  23.2G 531016    F51  C~2rXr      
2015 01  13.37386  07 52 12.825  +17 03 53.61  22.7G 531016    F51  C~2rXr      
2015 01  13.38739  07 52 12.746  +17 03 53.78  22.6G 531016    F51  C~2rXr      
2015 01  16.33756  07 51 55.582  +17 04 12.76  22.3G 531016    F51  C~2rXr      
2015 01  16.34974  07 51 55.501  +17 04 12.78  22.9G 531016    F51  C~2rXr      
2015 01  16.36195  07 51 55.432  +17 04 12.73  23.2G 531016    F51  C~2rXr      
2015 01  16.37425  07 51 55.358  +17 04 13.33  22.3G 531016    F51  C~2rXr      
2016 01  31.32091  07 57 23.733  +15 51 22.38  22.6G 531016    F51  C~2rXr      
2016 01  31.33288  07 57 23.650  +15 51 22.53  22.3G 531016    F51  C~2rXr      
2016 01  31.34488  07 57 23.579  +15 51 22.54  22.9G 531016    F51  C~2rXr      
2016 01  31.35701  07 57 23.503  +15 51 22.69  22.9G 531016    F51  C~2rXr      
2016 02  05.28815  07 56 56.390  +15 52 06.23  22.6G 531016    F51  C~2rXr      
2016 02  05.30241  07 56 56.283  +15 52 06.93  22.7G 531016    F51  C~2rXr      
2016 02  12.28657  07 56 19.577  +15 53 09.39  22.3G 531016    F51  C~2rXr      
2016 02  12.29852  07 56 19.506  +15 53 09.48  22.5G 531016    F51  C~2rXr      
2016 02  12.31051  07 56 19.447  +15 53 09.62  23.0G 531016    F51  C~2rXr      
2016 02  12.32261  07 56 19.384  +15 53 09.74  22.7G 531016    F51  C~2rXr      
2017 11  22.54480  08 16 02.975  +13 19 44.81  22.3G 531016    F51  C~2rXr      
2017 11  22.55558  08 16 02.955  +13 19 44.89  23.3G 531016    F51  C~2rXr      
2017 11  22.56642  08 16 02.932  +13 19 44.64  22.8G 531016    F51  C~2rXr      
2017 11  22.57730  08 16 02.905  +13 19 44.34  22.7G 531016    F51  C~2rXr      
2017 12  24.44713  08 14 07.986  +13 17 11.45  22.5G 531016    F51  C~2rXr      
2017 12  24.45869  08 14 07.942  +13 17 11.52  22.8G 531016    F51  C~2rXr      
2017 12  24.47033  08 14 07.874  +13 17 11.41  22.7G 531016    F51  C~2rXr      
2017 12  24.48191  08 14 07.824  +13 17 11.56  22.5G 531016    F51  C~2rXr      
2018 01  20.50045  08 11 42.872  +13 19 42.20  22.2G 531016    F51  C~2rXr      
2018 01  20.51280  08 11 42.800  +13 19 42.22  22.4G 531016    F51  C~2rXr      
2018 01  20.52502  08 11 42.731  +13 19 42.43  22.4G 531016    F51  C~2rXr      
2018 01  20.53729  08 11 42.652  +13 19 42.57  22.1G 531016    F51  C~2rXr      
2018 02  18.30434  08 09 08.243  +13 24 57.26  22.6G 531016    F51  C~2rXr      
2021 01  11.410590 08 31 32.578  +09 33 44.42  22.9G 531016    G37  C~4YAh      
2021 01  11.451050 08 31 32.357  +09 33 44.98        531016    G37  C~4YAh      
2021 01  11.491690 08 31 32.141  +09 33 45.03        531016    G37  C~4YAh      

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    -0.28       0.00    -0.14
     2   0.0135      0.00     0.14       0.00    -0.14
     3   0.0136      0.00    -0.01       0.00    -0.24
     4   0.0136      0.00    -0.12       0.00     0.05
     5   0.9965      0.00    -0.01       0.00     0.15
     6   0.9965      0.00    -0.03       0.00    -0.08
     7   0.9991      0.00    -0.10       0.00     0.07
     8   0.9992      0.00     0.10       0.00     0.16
     9   1.9798      0.00    -0.14       0.00     0.04
    10   1.9798      0.00    -0.12       0.00     0.12
    11   1.9799      0.00     0.01       0.00    -0.11
    12   1.9799      0.00    -0.11       0.00    -0.01
    13   1.9908      0.00    -0.06       0.00    -0.06
    14   2.0453      0.00     0.26       0.00     0.14
    15   2.0453      0.00     0.26       0.00    -0.38
    16   2.0454      0.00    -0.03       0.00    -0.00
    17   2.0454      0.00     0.04       0.00     0.03
    18   2.8810      0.00     0.30       0.00     0.10
    19   2.8886      0.00     0.16       0.00     0.02
    20   2.9602      0.00     0.18       0.00    -0.02
    21   3.0034      0.00     0.03       0.00     0.19
    22   3.0034      0.00     0.05       0.00     0.29
    23   3.9671      0.00    -0.18       0.00     0.01
    24   3.9671      0.00    -0.02       0.00    -0.09
    25   3.9672      0.00    -0.17       0.00    -0.07
    26   3.9672      0.00    -0.16       0.00     0.01
    27   3.9753      0.00     0.01       0.00     0.02
    28   3.9753      0.00    -0.12       0.00    -0.05
    29   3.9754      0.00    -0.08       0.00    -0.18
    30   3.9754      0.00    -0.09       0.00     0.34
    31   5.0156      0.00     0.27       0.00     0.04
    32   5.0157      0.00     0.04       0.00     0.08
    33   5.0157      0.00    -0.00       0.00    -0.01
    34   5.0157      0.00    -0.11       0.00     0.03
    35   5.0292      0.00     0.14       0.00    -0.24
    36   5.0293      0.00    -0.29       0.00     0.33
    37   5.0484      0.00     0.09       0.00    -0.02
    38   5.0484      0.00    -0.05       0.00    -0.04
    39   5.0485      0.00    -0.00       0.00    -0.01
    40   5.0485      0.00    -0.01       0.00     0.00
    41   6.8260      0.00    -0.02       0.00    -0.05
    42   6.8260      0.00     0.05       0.00     0.15
    43   6.8260      0.00     0.07       0.00     0.02
    44   6.8261      0.00     0.03       0.00    -0.16
    45   6.9133      0.00    -0.11       0.00    -0.02
    46   6.9133      0.00     0.08       0.00     0.03
    47   6.9134      0.00    -0.08       0.00    -0.09
    48   6.9134      0.00     0.02       0.00     0.04
    49   6.9874      0.00     0.05       0.00    -0.00
    50   6.9874      0.00     0.03       0.00    -0.09
    51   6.9874      0.00     0.05       0.00     0.01
    52   6.9875      0.00    -0.08       0.00     0.04
    53   7.0662      0.00     0.10       0.00    -0.13
    54   9.9632      0.00     0.00       0.00    -0.13
    55   9.9633      0.00    -0.06       0.00     0.16
    56   9.9634      0.00    -0.05       0.00    -0.07

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.

531016    quality flag:3

Type:       SCATNEAR  SCATNEAR  SCATNEAR

axisobj        77.835    77.834    77.835
ecceobj         0.536     0.536     0.536
incobj         26.362    26.362    26.362
qmin           34.010    33.909    33.843
qmax          122.760   122.837   123.181
amean          77.094    76.915    77.211
amin           75.724    75.641    75.670
amax           78.881    78.924    78.941
emean           0.539     0.540     0.542
emin            0.521     0.521     0.521
emax            0.557     0.560     0.562
imean          27.345    27.226    27.204
imin           26.278    26.261    26.127
imax           28.198    28.282    28.253
excite_mean     0.708     0.708     0.709
fracstop        1.000     1.000     1.000
cjmean          2.784     2.783     2.784

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       209.3     191.8     192.7
kozaiamp        180.0     180.0     180.0