Orbit Fit and Astrometric record for 10EU65

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: 10EU65    
# Created Thu Dec  9 02:10:52 2021
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting     51 observations of     51
# Arc:  10.12y
# First observation: 2009/04/21
#  Last observation: 2019/06/06
# Chi-squared of fit:   191.90 DOF:     96 RMS:  0.34
# Min/Max residuals:    -0.91    0.93
# Exact a, adot, b, bdot, g, gdot:
  2.085459E-05  8.411409E-02 -4.853241E-06 -2.186146E-02  5.744459E-02 -1.300627E-02
# Covariance matrix:
  1.1388E-13 -4.0875E-14 -7.7629E-15  6.3238E-15 -8.8938E-14 -1.5585E-14
 -4.0875E-14  2.3638E-14  5.7424E-15 -4.7453E-15  2.5747E-14  1.4790E-14
 -7.7629E-15  5.7424E-15  5.0789E-14 -1.1077E-14  3.3091E-15  4.9784E-15
  6.3238E-15 -4.7453E-15 -1.1077E-14  5.1166E-15 -2.4485E-15 -4.1604E-15
 -8.8938E-14  2.5747E-14  3.3091E-15 -2.4485E-15  1.8476E-13 -5.3154E-15
 -1.5585E-14  1.4790E-14  4.9784E-15 -4.1604E-15 -5.3154E-15  1.5073E-14
#      lat0       lon0       xBary       yBary       zBary        JD0
    0.909969  179.625381   -0.519848    0.013654   -0.860200  2454942.657056
# Heliocentric elements and errors
Epoch:              2454942.5000  =  2009/04/21
Mean Anomaly:          310.93073 +/-     0.006
Argument of Peri:      239.83904 +/-     0.007
Long of Asc Node:        4.60353 +/-     0.000
Inclination:            14.58249 +/-     0.000
Eccentricity:         0.14617866 +/-    0.0000
Semi-Major Axis:     19.89916674 +/-    0.0006
Time of Perihelion: 2459361.8447 +/-       1.4
Perihelion:          16.99033319 +/-    0.0006
Aphelion:            22.80800028 +/-    0.0008
Period (y)               88.7688 +/-      0.00
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -18.26649693 +/-    0.0001
Ecliptic Y           -0.40491675 +/-    0.0000
Ecliptic Z            0.27640502 +/-    0.0000
Ecliptic XDOT         0.00058212 +/-    0.0000
Ecliptic YDOT        -0.00400901 +/-    0.0000
Ecliptic ZDOT        -0.00105175 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   18.27312572 +/-    0.0001
Geocenter to KBO     17.40818018 +/-    0.0001
# Hcoef:  9.08

The following table shows the complete astrometric record for 10EU65. 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 (10EU65) followed by the observatory code and reference code for the source of the astrometry.

2009 04  21.15629  12 00 04.39   +00 59 02.0   21.2V 10EU65    G96  C~3xq1      
2009 04  21.16446  12 00 04.28   +00 59 02.2   22.2V 10EU65    G96  C~3xq1      
2009 04  21.17267  12 00 04.17   +00 59 02.4   21.0V 10EU65    G96  C~3xq1      
2009 04  21.18081  12 00 04.14   +00 59 02.7   21.4V 10EU65    G96  C~3xq1      
2010 02  15.47787  12 25 56.02   -02 56 43.3   22.1g 10EU65    F51  C~3xq1      
2010 02  15.48621  12 25 55.97   -02 56 43.2         10EU65    F51  C~3xq1      
2010 03  13.08329  12 22 18.303  -02 39 17.67  21.2R 10EU65    809  C~0F7n      
2010 03  13.16817  12 22 17.516  -02 39 13.50  21.3R 10EU65    809  C~0F7n      
2010 03  13.25226  12 22 16.717  -02 39 09.79  21.8R 10EU65    809  C~0F7n      
2010 03  14.16396  12 22 07.841  -02 38 24.75  21.2R 10EU65    809  C~0F7n      
2010 03  14.24839  12 22 06.987  -02 38 22.02  21.3R 10EU65    809  C~0F7n      
2010 03  16.22843  12 21 47.541  -02 36 42.75  21.4R 10EU65    807  C~0F7n      
2010 03  16.25617  12 21 47.271  -02 36 41.57  21.5R 10EU65    807  C~0F7n      
2010 03  18.07817  12 21 29.279  -02 35 11.00  21.5R 10EU65    809  C~0Fo2      
2010 03  18.16131  12 21 28.440  -02 35 06.79  21.0R 10EU65    809  C~0Fo2      
2010 03  18.24527  12 21 27.616  -02 35 02.72  21.4R 10EU65    809  C~0Fo2      
2010 03  20.07412  12 21 09.397  -02 33 30.49  21.2R 10EU65    809  C~0Fo2      
2010 03  20.15781  12 21 08.562  -02 33 25.84  21.2R 10EU65    809  C~0Fo2      
2010 03  20.24245  12 21 07.709  -02 33 22.06  21.3R 10EU65    809  C~0Fo2      
2010 03  21.07089  12 20 59.410  -02 32 40.05  21.0R 10EU65    809  C~0Fo2      
2010 03  21.15458  12 20 58.594  -02 32 35.91  21.4R 10EU65    809  C~0Fo2      
2010 03  21.23733  12 20 57.733  -02 32 31.38  21.8R 10EU65    809  C~0Fo2      
2010 03  22.06794  12 20 49.490  -02 31 49.36  21.0R 10EU65    809  C~0Fo2      
2010 03  22.15139  12 20 48.574  -02 31 45.33  21.0R 10EU65    809  C~0Fo2      
2010 03  22.23561  12 20 47.747  -02 31 40.40  21.5R 10EU65    809  C~0Fo2      
2010 03  27.20981  12 19 57.673  -02 27 27.27  21.2R 10EU65    807  C~0Fo2      
2010 03  27.26098  12 19 57.164  -02 27 24.19  21.2R 10EU65    807  C~0Fo2      
2010 04  17.40060  12 16 31.44   -02 10 00.9         10EU65    F51  C~3xq1      
2010 04  17.40980  12 16 31.35   -02 10 00.6         10EU65    F51  C~3xq1      
2010 04  21.09270  12 15 58.608  -02 07 16.66  21.8R 10EU65    807  C~0Gty      
2010 04  21.15461  12 15 58.075  -02 07 13.98  21.5R 10EU65    807  C~0Gty      
2010 05  13.30326  12 13 16.02   -01 54 28.2         10EU65    F51  C~3xq1      
2010 05  13.31516  12 13 15.94   -01 54 27.8         10EU65    F51  C~3xq1      
2010 06  03.00167  12 11 56.614  -01 50 01.64  21.2R 10EU65    807  C~0IRj      
2010 06  06.02025  12 11 51.702  -01 50 05.61  21.5R 10EU65    807  C~0IRj      
2010 06  06.09407  12 11 51.622  -01 50 06.06  21.2R 10EU65    807  C~0IRj      
2013 04  16.243843 13 07 17.22   -11 47 08.0   21.3r 10EU65    W84  C~3xq1      
2013 04  16.264155 13 07 17.00   -11 47 07.0         10EU65    W84  C~3xq1      
2013 04  16.269676 13 07 16.95   -11 47 06.7   21.4r 10EU65    W84  C~3xq1      
2013 04  16.300914 13 07 16.62   -11 47 05.1         10EU65    W84  C~3xq1      
2013 04  16.305046 13 07 16.58   -11 47 04.9         10EU65    W84  C~3xq1      
2013 04  16.309410 13 07 16.53   -11 47 04.7   21.3r 10EU65    W84  C~3xq1      
2013 04  16.313565 13 07 16.48   -11 47 04.5         10EU65    W84  C~3xq1      
2013 04  17.148947 13 07 07.87   -11 46 22.4   21.4r 10EU65    W84  C~3xq1      
2013 04  17.153137 13 07 07.83   -11 46 22.2   21.5r 10EU65    W84  C~3xq1      
2013 04  17.157280 13 07 07.78   -11 46 22.0   21.4r 10EU65    W84  C~3xq2      
2013 04  17.161470 13 07 07.73   -11 46 21.8   21.4r 10EU65    W84  C~3xq2      
2015 08  02.037859 13 36 41.48   -17 20 06.3         10EU65    W84  C~3xq2      
2015 08  02.038553 13 36 41.49   -17 20 06.4   21.4i 10EU65    W84  C~3xq2      
2015 09  01.014063 13 41 06.57   -17 39 53.3   21.4i 10EU65    W84  C~43wZ      
2019 06  06.185243 15 01 34.68   -29 12 18.6         10EU65    W84  C~43wZ      

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     0.34       0.00    -0.41
     2   0.0000      0.00    -0.29       0.00    -0.52
     3   0.0000      0.00    -0.91       0.00    -0.63
     4   0.0001      0.00    -0.35       0.00    -0.64
     5   0.8222      0.00    -0.36       0.00     0.18
     6   0.8223      0.00    -0.22       0.00     0.02
     7   0.8923      0.00    -0.25       0.00     0.35
     8   0.8926      0.00     0.46       0.00     0.40
     9   0.8928      0.00     0.93       0.00     0.03
    10   0.8953      0.00     0.54       0.00     0.60
    11   0.8955      0.00     0.31       0.00    -0.80
    12   0.9010      0.00    -0.23       0.00     0.82
    13   0.9010      0.00    -0.11       0.00     0.62
    14   0.9060      0.00    -0.10       0.00     0.27
    15   0.9062      0.00    -0.11       0.00     0.31
    16   0.9065      0.00     0.27       0.00     0.17
    17   0.9115      0.00    -0.12       0.00     0.22
    18   0.9117      0.00     0.08       0.00     0.65
    19   0.9119      0.00     0.21       0.00     0.14
    20   0.9142      0.00    -0.36       0.00     0.14
    21   0.9144      0.00     0.16       0.00     0.04
    22   0.9147      0.00    -0.09       0.00     0.37
    23   0.9169      0.00     0.78       0.00     0.14
    24   0.9172      0.00    -0.21       0.00    -0.08
    25   0.9174      0.00     0.30       0.00     0.56
    26   0.9310      0.00     0.12       0.00    -0.81
    27   0.9312      0.00     0.36       0.00    -0.35
    28   0.9890      0.00    -0.35       0.00    -0.08
    29   0.9891      0.00    -0.42       0.00    -0.20
    30   0.9991      0.00     0.14       0.00    -0.24
    31   0.9993      0.00     0.41       0.00    -0.23
    32   1.0600      0.00    -0.20       0.00    -0.19
    33   1.0600      0.00    -0.35       0.00    -0.08
    34   1.1166      0.00     0.60       0.00     0.38
    35   1.1249      0.00    -0.21       0.00     0.17
    36   1.1251      0.00     0.22       0.00    -0.05
    37   3.9866      0.00    -0.07       0.00    -0.12
    38   3.9866      0.00    -0.15       0.00    -0.15
    39   3.9866      0.00    -0.03       0.00    -0.13
    40   3.9867      0.00    -0.05       0.00    -0.12
    41   3.9867      0.00    -0.00       0.00    -0.13
    42   3.9867      0.00    -0.06       0.00    -0.15
    43   3.9867      0.00    -0.16       0.00    -0.16
    44   3.9890      0.00    -0.03       0.00    -0.19
    45   3.9890      0.00     0.03       0.00    -0.20
    46   3.9891      0.00    -0.06       0.00    -0.21
    47   3.9891      0.00    -0.15       0.00    -0.23
    48   6.2803      0.00    -0.19       0.00     0.10
    49   6.2803      0.00    -0.10       0.00     0.01
    50   6.3624      0.00    -0.01       0.00     0.04
    51  10.1247      0.00     0.26       0.00     0.38

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.

10EU65    quality flag:3

Type:       CENTAURR  CENTAURR  CENTAURR

axisobj        19.893    19.893    19.893
ecceobj         0.144     0.143     0.144
incobj         14.587    14.587    14.587
qmin           17.017    16.975    17.038
qmax           23.726    23.734    24.169
amean          20.207    20.255    20.439
amin           19.893    19.893    19.893
amax           20.433    20.427    20.723
emean           0.151     0.157     0.157
emin            0.143     0.144     0.144
emax            0.161     0.165     0.171
imean          15.218    15.022    15.130
imin           14.924    14.926    14.901
imax           15.408    15.179    15.400
excite_mean     0.303     0.303     0.304
fracstop        0.001     0.001     0.002
cjmean          3.048     3.046     3.039

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       239.5     237.4     246.5
kozaiamp          3.4       1.9      12.1