Orbit Fit and Astrometric record for 02GH166

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: 02GH166   
# Created Sun Dec  5 02:09:19 2021
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting     89 observations of     89
# Arc:  18.11y
# First observation: 2000/03/03
#  Last observation: 2018/04/13
# Chi-squared of fit:   117.65 DOF:    172 RMS:  0.20
# Min/Max residuals:    -0.70    1.02
# Exact a, adot, b, bdot, g, gdot:
  2.058122E-05  3.611396E-02 -1.514104E-06 -5.487117E-03  3.116194E-02 -3.733038E-03
# Covariance matrix:
  3.9578E-13 -5.1011E-14 -1.8070E-14  4.9257E-15 -2.3130E-14 -3.7707E-14
 -5.1011E-14  1.1437E-14  5.5766E-15 -1.5306E-15  1.2794E-14  1.1680E-14
 -1.8070E-14  5.5766E-15  2.8690E-13 -1.9725E-14  6.3921E-15  6.4565E-15
  4.9257E-15 -1.5306E-15 -1.9725E-14  1.5433E-15 -1.8136E-15 -1.7699E-15
 -2.3130E-14  1.2794E-14  6.3921E-15 -1.8136E-15  4.6665E-14  1.3631E-14
 -3.7707E-14  1.1680E-14  6.4565E-15 -1.7699E-15  1.3631E-14  1.3514E-14
#      lat0       lon0       xBary       yBary       zBary        JD0
    0.518943 -171.810608    0.417068    0.007972   -0.905669  2451606.949069
# Heliocentric elements and errors
Epoch:              2451606.5000  =  2000/03/03
Mean Anomaly:          330.57729 +/-     0.003
Argument of Peri:      219.44663 +/-     0.004
Long of Asc Node:       10.77030 +/-     0.000
Inclination:             8.68025 +/-     0.000
Eccentricity:         0.19056024 +/-    0.0000
Semi-Major Axis:     39.02199551 +/-    0.0012
Time of Perihelion: 2458883.3396 +/-       3.9
Perihelion:          31.58595462 +/-    0.0012
Aphelion:            46.45803639 +/-    0.0016
Period (y)              243.7656 +/-      0.01
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -32.71088802 +/-    0.0002
Ecliptic Y           -4.28456847 +/-    0.0000
Ecliptic Z            0.29062967 +/-    0.0000
Ecliptic XDOT         0.00076637 +/-    0.0000
Ecliptic YDOT        -0.00308755 +/-    0.0000
Ecliptic ZDOT        -0.00048493 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   32.99164456 +/-    0.0002
Geocenter to KBO     32.09051692 +/-    0.0002
# Hcoef:  7.22

The following table shows the complete astrometric record for 02GH166. 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 (02GH166) followed by the observatory code and reference code for the source of the astrometry.

2000 03  03.448326 12 30 54.38   -02 46 16.7   22.2V 02GH166   645  C~2Jx6      
2000 03  03.449156 12 30 54.37   -02 46 16.6   22.2V 02GH166   645  C~2Jx6      
2000 03  03.451643 12 30 54.36   -02 46 16.6   22.9V 02GH166   645  C~2Jx6      
2002 04  03.37286  12 42 31.42   -04 43 38.3   21.5R 02GH166   644  Cl2691      
2002 04  09.04270  12 41 59.38   -04 40 33.0   20.7R 02GH166   807  Cf7585      
2002 04  09.14504  12 41 58.81   -04 40 29.9         02GH166   807  Cf7585      
2002 05  08.34585  12 39 29.86   -04 26 19.4   21.7R 02GH166   568  Cf7585      
2002 05  08.41063  12 39 29.57   -04 26 17.8         02GH166   568  Cf7585      
2010 06  26.28182  13 37 15.969  -13 04 52.74  22.8G 02GH166   F51  C~2r7A      
2011 01  21.64768  13 55 05.375  -14 52 54.76  21.6G 02GH166   F51  C~2r7A      
2011 04  03.54486  13 51 47.979  -14 44 47.96  22.2G 02GH166   F51  C~2r7A      
2011 04  13.41677  13 50 50.012  -14 40 19.76  21.9i 02GH166   F51  C~1vV9      
2011 04  13.42870  13 50 49.943  -14 40 19.41  21.6i 02GH166   F51  C~1vV9      
2011 04  13.57344  13 50 49.057  -14 40 14.78  22.3g 02GH166   F51  C~1vV9      
2012 04  15.42106  13 58 45.075  -15 43 31.87  22.4w 02GH166   F51  C~1vV9      
2012 04  15.43498  13 58 44.987  -15 43 31.53  22.1w 02GH166   F51  C~1vV9      
2012 04  15.44885  13 58 44.896  -15 43 31.15  22.1w 02GH166   F51  C~1vV9      
2012 04  15.46278  13 58 44.819  -15 43 30.79  22.1w 02GH166   F51  C~1vV9      
2013 04  12.53334  14 07 22.622  -16 48 29.68  21.9G 02GH166   F51  C~2r7A      
2013 05  05.38502  14 05 03.578  -16 37 49.66  22.0G 02GH166   F51  C~2r7A      
2013 05  05.39985  14 05 03.483  -16 37 48.98  21.9G 02GH166   F51  C~2r7A      
2013 05  05.42940  14 05 03.286  -16 37 48.39  21.8G 02GH166   F51  C~2r7A      
2013 05  18.37449  14 03 48.845  -16 31 34.71  22.2G 02GH166   F51  C~2r7A      
2014 04  05.47521  14 16 31.314  -17 53 46.11  22.2w 02GH166   F51  C~1vV9      
2014 04  05.48710  14 16 31.245  -17 53 46.00  22.0w 02GH166   F51  C~1vV9      
2014 04  05.49899  14 16 31.181  -17 53 45.57  22.0w 02GH166   F51  C~1vV9      
2014 04  05.51090  14 16 31.103  -17 53 45.33  22.1w 02GH166   F51  C~1vV9      
2014 04  29.41018  14 14 06.847  -17 43 38.10  22.3w 02GH166   F51  C~1vV9      
2014 04  29.42076  14 14 06.803  -17 43 37.24  22.5w 02GH166   F51  C~1vV9      
2014 04  29.43135  14 14 06.711  -17 43 37.33  22.1w 02GH166   F51  C~1vV9      
2014 04  29.44193  14 14 06.652  -17 43 37.06  22.1w 02GH166   F51  C~1vV9      
2014 05  07.39950  14 13 17.896  -17 39 51.25  21.9G 02GH166   F51  C~2r7A      
2014 05  07.41030  14 13 17.856  -17 39 51.05  21.5G 02GH166   F51  C~2r7A      
2014 05  07.43138  14 13 17.738  -17 39 49.92  22.3G 02GH166   F51  C~2r7A      
2014 05  23.31588  14 11 46.530  -17 32 20.59  22.2w 02GH166   F51  C~1vV9      
2014 05  23.32715  14 11 46.463  -17 32 20.33  22.0w 02GH166   F51  C~1vV9      
2014 05  23.33843  14 11 46.401  -17 32 20.08  22.2w 02GH166   F51  C~1vV9      
2014 05  23.34971  14 11 46.346  -17 32 19.73  22.2w 02GH166   F51  C~1vV9      
2014 06  04.32323  14 10 47.110  -17 27 05.56  22.0G 02GH166   F51  C~2r7A      
2014 06  20.30471  14 09 46.766  -17 21 14.58  22.1G 02GH166   F51  C~2r7A      
2014 06  30.27222  14 09 22.156  -17 18 31.14  22.4G 02GH166   F51  C~2r7A      
2014 06  30.28410  14 09 22.133  -17 18 30.67  22.5G 02GH166   F51  C~2r7A      
2014 06  30.29599  14 09 22.095  -17 18 30.46  22.4G 02GH166   F51  C~2r7A      
2014 06  30.30787  14 09 22.087  -17 18 30.63  22.1G 02GH166   F51  C~2r7A      
2015 01  23.66786  14 27 39.160  -18 54 47.28  21.9G 02GH166   F51  C~2r7A      
2015 03  02.65598  14 27 30.380  -19 01 19.17  22.5G 02GH166   F51  C~2r7A      
2015 04  01.49942  14 25 27.793  -18 56 10.61  22.5G 02GH166   F51  C~2r7A      
2015 04  13.19071  14 24 21.48   -18 52 10.0   22.4V 02GH166   W84  C~2J8o      
2015 04  13.33664  14 24 20.61   -18 52 06.7         02GH166   W84  C~2J8o      
2015 04  13.38815  14 24 20.29   -18 52 05.5         02GH166   W84  C~2J8o      
2015 04  25.42135  14 23 06.644  -18 47 09.07  22.6G 02GH166   F51  C~2r7A      
2015 04  25.43328  14 23 06.588  -18 47 08.66  22.2G 02GH166   F51  C~2r7A      
2015 04  25.44520  14 23 06.504  -18 47 08.46  22.3G 02GH166   F51  C~2r7A      
2015 05  19.38967  14 20 40.599  -18 36 08.06  22.0G 02GH166   F51  C~2r7A      
2015 05  21.32391  14 20 29.581  -18 35 14.42  22.1G 02GH166   F51  C~2r7A      
2015 05  21.33603  14 20 29.509  -18 35 13.78  22.4G 02GH166   F51  C~2r7A      
2015 05  21.34822  14 20 29.440  -18 35 13.52  21.9G 02GH166   F51  C~2r7A      
2015 05  21.36035  14 20 29.371  -18 35 13.28  22.4G 02GH166   F51  C~2r7A      
2015 06  18.29546  14 18 18.824  -18 23 37.59  22.3w 02GH166   F51  C~1vV9      
2015 06  18.30776  14 18 18.783  -18 23 37.33  22.2w 02GH166   F51  C~1vV9      
2015 06  18.32004  14 18 18.738  -18 23 37.13  22.1w 02GH166   F51  C~1vV9      
2015 06  18.33234  14 18 18.695  -18 23 36.75  22.2w 02GH166   F51  C~1vV9      
2015 06  19.28262  14 18 15.436  -18 23 17.37  22.3w 02GH166   F51  C~1vV9      
2015 06  19.29451  14 18 15.399  -18 23 17.06  22.5w 02GH166   F51  C~1vV9      
2015 06  19.30641  14 18 15.361  -18 23 16.94  22.6w 02GH166   F51  C~1vV9      
2015 06  19.31830  14 18 15.322  -18 23 16.57  22.1w 02GH166   F51  C~1vV9      
2016 02  12.58705  14 36 28.184  -19 57 57.13  21.7G 02GH166   F51  C~2r7A      
2016 02  12.59918  14 36 28.171  -19 57 57.37  22.1G 02GH166   F51  C~2r7A      
2016 02  12.61129  14 36 28.163  -19 57 57.26  22.3G 02GH166   F51  C~2r7A      
2016 02  12.62349  14 36 28.178  -19 57 57.66  22.5G 02GH166   F51  C~2r7A      
2016 03  16.49888  14 35 19.089  -19 58 52.56  22.4G 02GH166   F51  C~2r7A      
2016 03  16.51060  14 35 19.060  -19 58 52.62  22.3G 02GH166   F51  C~2r7A      
2016 03  16.53396  14 35 18.953  -19 58 52.37  22.3G 02GH166   F51  C~2r7A      
2016 04  12.46713  14 33 02.635  -19 52 06.11  21.8G 02GH166   F51  C~2r7A      
2016 04  12.47879  14 33 02.564  -19 52 06.02  21.7G 02GH166   F51  C~2r7A      
2016 04  12.49044  14 33 02.481  -19 52 05.79  22.9G 02GH166   F51  C~2r7A      
2016 05  02.40092  14 30 59.561  -19 44 06.34  22.2G 02GH166   F51  C~2r7A      
2016 05  02.41254  14 30 59.476  -19 44 06.07  22.4G 02GH166   F51  C~2r7A      
2016 05  02.43579  14 30 59.339  -19 44 05.20  22.2G 02GH166   F51  C~2r7A      
2017 01  31.62604  14 44 54.250  -20 51 10.02  23.0G 02GH166   F51  C~2r7A      
2017 04  01.49912  14 42 53.644  -20 53 42.99  22.4G 02GH166   F51  C~2r7A      
2017 04  01.51035  14 42 53.575  -20 53 42.78  22.2G 02GH166   F51  C~2r7A      
2017 04  01.52157  14 42 53.517  -20 53 42.53  22.2G 02GH166   F51  C~2r7A      
2017 04  01.53277  14 42 53.465  -20 53 42.48  22.2G 02GH166   F51  C~2r7A      
2017 04  25.45725  14 40 33.849  -20 46 00.19  21.7G 02GH166   F51  C~2r7A      
2017 05  18.32251  14 38 10.467  -20 36 13.82  22.0G 02GH166   F51  C~2r7A      
2017 05  18.33426  14 38 10.379  -20 36 13.58  22.0G 02GH166   F51  C~2r7A      
2017 05  18.35772  14 38 10.238  -20 36 13.28  22.6G 02GH166   F51  C~2r7A      
2018 04  13.49797  14 50 44.721  -21 47 13.82  22.2G 02GH166   F51  C~2r7A      

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    -0.53       0.00    -0.06
     2   0.0000      0.00    -0.62       0.00     0.02
     3   0.0000      0.00    -0.58       0.00    -0.05
     4   2.0833      0.00    -0.38       0.00    -0.04
     5   2.0988      0.00     0.79       0.00     0.24
     6   2.0991      0.00     1.02       0.00     0.03
     7   2.1790      0.00     0.54       0.00    -0.03
     8   2.1792      0.00     0.47       0.00    -0.00
     9  10.3130      0.00    -0.70       0.00     0.01
    10  10.8862      0.00    -0.07       0.00    -0.43
    11  11.0831      0.00    -0.34       0.00    -0.21
    12  11.1101      0.00    -0.06       0.00    -0.18
    13  11.1101      0.00    -0.01       0.00    -0.16
    14  11.1105      0.00    -0.06       0.00     0.34
    15  12.1177      0.00    -0.01       0.00     0.07
    16  12.1177      0.00    -0.04       0.00     0.03
    17  12.1177      0.00    -0.12       0.00     0.02
    18  12.1178      0.00     0.01       0.00    -0.01
    19  13.1091      0.00    -0.12       0.00    -0.09
    20  13.1716      0.00     0.16       0.00    -0.02
    21  13.1717      0.00     0.09       0.00     0.23
    22  13.1717      0.00    -0.16       0.00    -0.04
    23  13.2072      0.00    -0.36       0.00    -0.06
    24  14.0891      0.00     0.09       0.00    -0.05
    25  14.0891      0.00     0.09       0.00    -0.19
    26  14.0891      0.00     0.16       0.00    -0.02
    27  14.0892      0.00     0.03       0.00    -0.04
    28  14.1546      0.00     0.12       0.00    -0.21
    29  14.1546      0.00     0.46       0.00     0.36
    30  14.1546      0.00     0.08       0.00    -0.03
    31  14.1547      0.00     0.19       0.00    -0.06
    32  14.1765      0.00    -0.23       0.00    -0.08
    33  14.1765      0.00     0.17       0.00    -0.19
    34  14.1765      0.00     0.35       0.00     0.34
    35  14.2200      0.00     0.02       0.00     0.11
    36  14.2201      0.00    -0.06       0.00     0.06
    37  14.2201      0.00    -0.06       0.00    -0.00
    38  14.2201      0.00     0.04       0.00     0.04
    39  14.2529      0.00    -0.03       0.00    -0.17
    40  14.2967      0.00     0.17       0.00     0.20
    41  14.3240      0.00    -0.06       0.00    -0.08
    42  14.3240      0.00    -0.04       0.00     0.23
    43  14.3240      0.00    -0.25       0.00     0.27
    44  14.3241      0.00    -0.01       0.00    -0.07
    45  14.8918      0.00    -0.01       0.00    -0.10
    46  14.9958      0.00     0.27       0.00    -0.34
    47  15.0775      0.00    -0.11       0.00    -0.16
    48  15.1095      0.00    -0.12       0.00    -0.03
    49  15.1099      0.00     0.08       0.00    -0.07
    50  15.1100      0.00    -0.06       0.00    -0.06
    51  15.1430      0.00    -0.28       0.00     0.02
    52  15.1430      0.00     0.01       0.00     0.12
    53  15.1430      0.00    -0.11       0.00     0.00
    54  15.2086      0.00     0.03       0.00     0.01
    55  15.2139      0.00    -0.09       0.00    -0.10
    56  15.2139      0.00    -0.12       0.00     0.20
    57  15.2140      0.00    -0.10       0.00     0.13
    58  15.2140      0.00    -0.09       0.00     0.03
    59  15.2905      0.00     0.03       0.00     0.08
    60  15.2905      0.00     0.08       0.00     0.08
    61  15.2905      0.00     0.06       0.00     0.02
    62  15.2906      0.00     0.08       0.00     0.15
    63  15.2932      0.00    -0.01       0.00     0.00
    64  15.2932      0.00     0.06       0.00     0.07
    65  15.2932      0.00     0.12       0.00    -0.05
    66  15.2933      0.00     0.15       0.00     0.07
    67  15.9456      0.00     0.03       0.00    -0.00
    68  15.9457      0.00    -0.14       0.00    -0.10
    69  15.9457      0.00    -0.23       0.00     0.16
    70  15.9457      0.00     0.03       0.00    -0.10
    71  16.0357      0.00    -0.12       0.00     0.15
    72  16.0358      0.00     0.16       0.00    -0.01
    73  16.0358      0.00    -0.02       0.00     0.05
    74  16.1096      0.00     0.03       0.00     0.08
    75  16.1096      0.00     0.02       0.00    -0.08
    76  16.1096      0.00    -0.17       0.00    -0.10
    77  16.1641      0.00     0.29       0.00     0.01
    78  16.1642      0.00     0.14       0.00    -0.03
    79  16.1642      0.00     0.31       0.00     0.23
    80  16.9149      0.00    -0.12       0.00     0.16
    81  17.0789      0.00     0.06       0.00    -0.06
    82  17.0789      0.00    -0.08       0.00    -0.01
    83  17.0789      0.00    -0.06       0.00     0.08
    84  17.0789      0.00     0.05       0.00    -0.03
    85  17.1444      0.00     0.11       0.00    -0.05
    86  17.2070      0.00    -0.02       0.00     0.07
    87  17.2071      0.00    -0.25       0.00    -0.01
    88  17.2071      0.00    -0.20       0.00    -0.33
    89  18.1110      0.00     0.01       0.00    -0.13

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.

02GH166    quality flag:3

Type:           3:2E      3:2E      3:2E

axisobj        39.011    39.011    39.011
ecceobj         0.190     0.190     0.190
incobj          8.682     8.682     8.682
qmin           30.650    30.642    30.631
qmax           48.944    48.960    48.972
amean          39.456    39.456    39.456
amin           38.953    38.965    38.963
amax           40.018    40.009    40.012
emean           0.204     0.204     0.204
emin            0.183     0.183     0.183
emax            0.224     0.225     0.225
imean           8.605     8.601     8.614
imin            8.062     8.062     8.063
imax            9.419     9.413     9.415
excite_mean     0.253     0.253     0.253
fracstop        1.000     1.000     1.000
cjmean          2.979     2.979     2.978

libcent 0       179.6     178.9     180.0
libamp  0       105.4     106.1     105.5
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       181.7     181.5     182.5
kozaiamp        180.0     180.0     179.9