Orbit Fit and Astrometric record for 131697

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: 131697    
# Created Fri Dec  3 02:07:03 2021
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting     71 observations of     71
# Arc:  18.28y
# First observation: 2001/12/11
#  Last observation: 2020/03/22
# Chi-squared of fit:    88.55 DOF:    136 RMS:  0.20
# Min/Max residuals:    -0.63    0.45
# Exact a, adot, b, bdot, g, gdot:
  1.612391E-05  3.262694E-02  6.123684E-07 -1.318552E-03  3.005775E-02 -1.888543E-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
    1.744763  107.397087    0.459127    0.026246   -0.864158  2452254.897773
# Heliocentric elements and errors
Epoch:              2452254.5000  =  2001/12/11
Mean Anomaly:          296.90602 +/-     0.000
Argument of Peri:      214.55183 +/-     0.000
Long of Asc Node:      323.23331 +/-     0.000
Inclination:             2.84931 +/-     0.000
Eccentricity:         0.07616459 +/-    0.0000
Semi-Major Axis:     35.18361633 +/-    0.0000
Time of Perihelion: 2465614.1340 +/-       0.0
Perihelion:          32.50387055 +/-    0.0000
Aphelion:            37.86336211 +/-    0.0000
Period (y)              208.6983 +/-      0.00
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           -9.76181442 +/-    0.0000
Ecliptic Y           32.70039766 +/-    0.0000
Ecliptic Z            1.01296610 +/-    0.0000
Ecliptic XDOT        -0.00279420 +/-    0.0000
Ecliptic YDOT        -0.00104920 +/-    0.0000
Ecliptic ZDOT        -0.00012507 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   34.14143918 +/-    0.0000
Geocenter to KBO     33.26934481 +/-    0.0000
# Hcoef:  8.26

The following table shows the complete astrometric record for 131697. 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 (131697) followed by the observatory code and reference code for the source of the astrometry.

2001 12  11.39703  07 16 24.21   +24 02 16.2         131697    568  Ce7056      
2001 12  11.42052  07 16 24.07   +24 02 16.6         131697    568  Ce7056      
2001 12  11.44368  07 16 23.95   +24 02 16.9         131697    568  Ce7056      
2002 01  09.51211  07 13 22.22   +24 07 36.8         131697    568  Ce7056      
2002 01  09.53762  07 13 22.01   +24 07 37.0   23.5R 131697    568  Ce7056      
2003 12  24.46344  07 31 22.81   +23 23 23.4   23.1g 131697    568  Cq9107      
2003 12  24.48664  07 31 22.68   +23 23 23.7   23.3g 131697    568  Cq9107      
2003 12  24.50988  07 31 22.52   +23 23 24.1   23.6g 131697    568  Cq9107      
2003 12  25.50403  07 31 16.47   +23 23 37.5   24.0g 131697    568  Cq9107      
2004 04  15.19439  07 24 13.91   +23 33 49.8         131697    675  Cq9107      
2004 04  15.23969  07 24 14.00   +23 33 49.3         131697    675  Cq9107      
2005 01  08.35280  07 37 50.14   +23 04 04.1   23.5r 131697    568  Cq9107      
2005 01  08.39064  07 37 49.89   +23 04 04.6   23.6r 131697    568  Cq9107      
2005 01  08.42845  07 37 49.64   +23 04 05.2   23.4r 131697    568  Cq9107      
2005 01  15.37575  07 37 04.49   +23 05 43.4   23.9r 131697    568  Cq9107      
2006 01  29.32339  07 43 42.64   +22 44 45.3         131697    675  Cq9107      
2006 01  29.32971  07 43 42.61   +22 44 45.2         131697    675  Cq9107      
2006 01  29.42638  07 43 42.00   +22 44 46.6         131697    675  Cq9107      
2006 01  29.43285  07 43 41.98   +22 44 46.6         131697    675  Cq9107      
2011 01  30.469049 08 23 47.369  +20 21 11.44  22.8G 131697    F51  C~42Ep      
2011 01  30.484294 08 23 47.285  +20 21 11.86  23.3G 131697    F51  C~42Ep      
2011 01  30.500586 08 23 47.152  +20 21 12.18  22.9G 131697    F51  C~42Ep      
2011 01  30.515680 08 23 47.058  +20 21 12.46  23.1G 131697    F51  C~42Ep      
2012 02  13.306612 08 30 22.981  +19 52 25.63  23.2G 131697    F51  C~42Ep      
2012 02  13.321144 08 30 22.871  +19 52 25.96  23.4G 131697    F51  C~42Ep      
2012 02  13.335712 08 30 22.804  +19 52 25.54  22.8G 131697    F51  C~42Ep      
2012 02  13.350300 08 30 22.708  +19 52 26.25  23.3G 131697    F51  C~42Ep      
2013 03  13.12101  08 35 54.79   +19 25 56.6   22.6R 131697    695  C~0und      
2013 03  13.19879  08 35 54.46   +19 25 57.8         131697    695  C~0und      
2014 01  01.454071 08 50 32.824  +18 25 33.26  23.6G 131697    F51  C~42Ep      
2014 02  23.267629 08 45 17.688  +18 45 21.16  23.0G 131697    F51  C~42Ep      
2014 02  26.446286 08 45 00.364  +18 46 23.02  22.4G 131697    F51  C~42Ep      
2014 03  06.437809 08 44 19.980  +18 48 45.22  23.1G 131697    F51  C~42Ep      
2014 12  21.597871 08 59 17.719  +17 43 55.85  23.6G 131697    F51  C~42Ep      
2014 12  21.611555 08 59 17.659  +17 43 56.00  22.6G 131697    F51  C~42Ep      
2015 01  16.534249 08 57 03.416  +17 53 03.65  22.7G 131697    F51  C~42Ep      
2015 01  16.546500 08 57 03.363  +17 53 03.92  23.5G 131697    F51  C~42Ep      
2015 01  16.571089 08 57 03.220  +17 53 04.12  23.4G 131697    F51  C~42Ep      
2015 02  16.302305 08 53 54.817  +18 05 24.74  23.4G 131697    F51  C~42Ep      
2015 02  16.314677 08 53 54.718  +18 05 24.57  23.0G 131697    F51  C~42Ep      
2015 02  17.326899 08 53 48.735  +18 05 48.08  22.6G 131697    F51  C~42Ep      
2015 04  10.341098 08 50 21.976  +18 18 07.68  23.2G 131697    F51  C~42Ep      
2016 01  31.404429 09 03 28.139  +17 19 52.43  23.8G 131697    F51  C~42Ep      
2016 02  11.288288 09 02 20.901  +17 24 27.10  22.3G 131697    F51  C~42Ep      
2016 04  28.302674 08 58 00.085  +17 40 34.04  23.8G 131697    F51  C~42Ep      
2017 01  27.564566 09 11 39.326  +16 38 07.28  22.9G 131697    F51  C~42Ep      
2017 02  04.519939 09 10 50.451  +16 41 36.29  23.6G 131697    F51  C~42Ep      
2017 02  21.368594 09 09 08.538  +16 48 46.42  23.5G 131697    F51  C~42Ep      
2017 02  22.278508 09 09 03.280  +16 49 08.16  24.0G 131697    F51  C~42Ep      
2017 03  24.25073  09 06 38.849  +16 58 54.58        131697    568  C~2QJI      
2017 03  29.27032  09 06 22.132  +16 59 58.72        131697    568  C~2QJI      
2017 10  21.58529  09 22 42.781  +15 42 21.34        131697    568  C~2QJI      
2017 10  21.61235  09 22 42.875  +15 42 20.87        131697    568  C~2QJI      
2017 11  17.63836  09 23 35.785  +15 38 03.56  23.6w 131697    568  C~2X2r      
2017 11  20.581398 09 23 36.192  +15 38 00.89  23.7G 131697    F51  C~42Ep      
2017 11  21.52466  09 23 36.080  +15 38 00.89  23.7w 131697    568  C~2X2r      
2017 12  23.61556  09 22 29.936  +15 42 55.81  23.5w 131697    568  C~2X2r      
2018 01  14.591023 09 20 45.986  +15 50 44.66  23.7G 131697    F51  C~42Ep      
2018 03  07.239036 09 15 43.397  +16 12 55.88  22.9G 131697    F51  C~42Ep      
2018 03  07.250660 09 15 43.311  +16 12 56.18  22.8G 131697    F51  C~42Ep      
2018 03  07.262286 09 15 43.245  +16 12 56.43  22.7G 131697    F51  C~42Ep      
2019 01  06.653403 09 29 14.152  +15 04 36.27  24.5G 131697    F51  C~42Ep      
2019 11  27.604496 09 38 44.115  +14 12 18.84  23.7G 131697    F51  C~42Ep      
2019 12  03.524251 09 38 39.760  +14 12 35.58  22.9G 131697    F51  C~42Ep      
2020 01  20.452732 09 35 47.698  +14 26 07.74  23.5G 131697    F51  C~42Ep      
2020 01  22.415201 09 35 36.779  +14 27 00.14  23.4G 131697    F51  C~42Ep      
2020 01  22.426075 09 35 36.700  +14 27 00.30  23.7G 131697    F51  C~42Ep      
2020 01  22.436985 09 35 36.619  +14 27 00.77  23.9G 131697    F51  C~42Ep      
2020 01  22.447961 09 35 36.588  +14 27 01.00  23.7G 131697    F51  C~42Ep      
2020 01  23.443543 09 35 30.953  +14 27 27.61  24.0G 131697    F51  C~42Ep      
2020 03  22.291925 09 30 01.408  +14 53 10.65  24.0G 131697    F51  C~42Ep      

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     0.19       0.00    -0.30
     2   0.0001      0.00     0.10       0.00    -0.16
     3   0.0001      0.00     0.28       0.00    -0.12
     4   0.0797      0.00     0.40       0.00     0.01
     5   0.0798      0.00    -0.21       0.00    -0.05
     6   2.0344      0.00    -0.29       0.00    -0.03
     7   2.0345      0.00    -0.08       0.00    -0.04
     8   2.0345      0.00    -0.31       0.00     0.06
     9   2.0373      0.00     0.07       0.00     0.23
    10   2.3430      0.00     0.08       0.00     0.10
    11   2.3432      0.00     0.14       0.00    -0.05
    12   3.0772      0.00     0.06       0.00     0.15
    13   3.0773      0.00     0.05       0.00     0.09
    14   3.0774      0.00     0.04       0.00     0.14
    15   3.0965      0.00    -0.06       0.00     0.05
    16   4.1340      0.00    -0.38       0.00     0.45
    17   4.1340      0.00    -0.23       0.00     0.26
    18   4.1342      0.00    -0.24       0.00     0.37
    19   4.1343      0.00     0.07       0.00     0.28
    20   9.1364      0.00     0.05       0.00    -0.20
    21   9.1364      0.00     0.26       0.00    -0.08
    22   9.1365      0.00    -0.17       0.00    -0.09
    23   9.1365      0.00    -0.13       0.00    -0.11
    24  10.1736      0.00     0.02       0.00     0.03
    25  10.1736      0.00    -0.31       0.00     0.08
    26  10.1737      0.00    -0.00       0.00    -0.63
    27  10.1737      0.00    -0.12       0.00    -0.20
    28  11.2518      0.00     0.20       0.00    -0.08
    29  11.2520      0.00     0.03       0.00     0.14
    30  12.0577      0.00     0.01       0.00    -0.33
    31  12.2022      0.00    -0.19       0.00    -0.22
    32  12.2109      0.00    -0.41       0.00    -0.10
    33  12.2328      0.00     0.08       0.00     0.06
    34  13.0272      0.00    -0.06       0.00    -0.37
    35  13.0273      0.00    -0.08       0.00    -0.45
    36  13.0983      0.00    -0.25       0.00     0.28
    37  13.0983      0.00     0.07       0.00     0.26
    38  13.0984      0.00     0.15       0.00    -0.12
    39  13.1825      0.00     0.25       0.00    -0.11
    40  13.1825      0.00    -0.11       0.00    -0.57
    41  13.1853      0.00     0.13       0.00    -0.05
    42  13.3277      0.00     0.12       0.00    -0.08
    43  14.1383      0.00     0.11       0.00    -0.15
    44  14.1681      0.00     0.34       0.00    -0.08
    45  14.3789      0.00     0.03       0.00    -0.12
    46  15.1298      0.00     0.06       0.00    -0.08
    47  15.1516      0.00     0.28       0.00    -0.10
    48  15.1977      0.00    -0.19       0.00     0.33
    49  15.2002      0.00    -0.05       0.00     0.09
    50  15.2823      0.00    -0.02       0.00     0.16
    51  15.2960      0.00     0.12       0.00    -0.03
    52  15.8609      0.00     0.13       0.00     0.02
    53  15.8610      0.00     0.13       0.00    -0.00
    54  15.9350      0.00     0.05       0.00     0.02
    55  15.9430      0.00     0.24       0.00     0.25
    56  15.9456      0.00     0.04       0.00     0.13
    57  16.0335      0.00     0.04       0.00     0.01
    58  16.0936      0.00     0.06       0.00     0.04
    59  16.2350      0.00     0.09       0.00     0.14
    60  16.2351      0.00    -0.28       0.00     0.18
    61  16.2351      0.00    -0.36       0.00     0.17
    62  17.0712      0.00    -0.09       0.00    -0.15
    63  17.9609      0.00     0.26       0.00     0.16
    64  17.9771      0.00     0.15       0.00    -0.18
    65  18.1083      0.00    -0.28       0.00    -0.14
    66  18.1137      0.00     0.11       0.00     0.16
    67  18.1137      0.00    -0.14       0.00     0.03
    68  18.1137      0.00    -0.42       0.00     0.21
    69  18.1138      0.00     0.06       0.00     0.14
    70  18.1165      0.00    -0.08       0.00    -0.01
    71  18.2776      0.00     0.24       0.00     0.35

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.

131697    quality flag:3

Type:           5:4E      5:4E      5:4E

axisobj        35.048    35.048    35.048
ecceobj         0.073     0.073     0.073
incobj          2.857     2.857     2.857
qmin           31.458    31.444    31.450
qmax           38.714    38.707    38.697
amean          34.946    34.946    34.946
amin           34.631    34.632    34.631
amax           35.282    35.282    35.282
emean           0.079     0.079     0.079
emin            0.059     0.058     0.059
emax            0.098     0.098     0.098
imean           4.855     4.855     4.855
imin            3.409     3.409     3.410
imax            6.050     6.051     6.050
excite_mean     0.116     0.116     0.116
fracstop        1.000     1.000     1.000
cjmean          3.002     3.002     3.002

libcent 0       179.9     180.7     179.5
libamp  0        72.3      72.3      72.5
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       179.6     180.0     179.8
kozaiamp        180.0     180.0     180.0