Orbit Fit and Astrometric record for 160091

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: 160091    
# Created Sun Dec  5 02:07:07 2021
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting     54 observations of     54
# Arc:  20.15y
# First observation: 2000/07/29
#  Last observation: 2020/09/21
# Chi-squared of fit:    85.55 DOF:    102 RMS:  0.22
# Min/Max residuals:    -1.21    0.48
# Exact a, adot, b, bdot, g, gdot:
  1.410437E-05  2.397487E-02 -1.911707E-07  8.066604E-04  2.417443E-02  2.451306E-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
    0.457402  -23.585302    0.512755    0.006830   -0.876242  2451754.813763
# Heliocentric elements and errors
Epoch:              2451754.5000  =  2000/07/29
Mean Anomaly:           47.68143 +/-     0.000
Argument of Peri:      315.28723 +/-     0.000
Long of Asc Node:      322.69777 +/-     0.000
Inclination:             1.98535 +/-     0.000
Eccentricity:         0.10857935 +/-    0.0000
Semi-Major Axis:     45.23001652 +/-    0.0000
Time of Perihelion: 2437038.6514 +/-       0.0
Perihelion:          40.31897085 +/-    0.0000
Aphelion:            50.14106219 +/-    0.0000
Period (y)              304.1924 +/-      0.00
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           38.51328540 +/-    0.0000
Ecliptic Y          -17.36641758 +/-    0.0000
Ecliptic Z            0.33020592 +/-    0.0000
Ecliptic XDOT         0.00133305 +/-    0.0000
Ecliptic YDOT         0.00238324 +/-    0.0000
Ecliptic ZDOT         0.00009372 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   42.24890404 +/-    0.0000
Geocenter to KBO     41.36599226 +/-    0.0000
# Hcoef:  6.87

The following table shows the complete astrometric record for 160091. 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 (160091) followed by the observatory code and reference code for the source of the astrometry.

2000 07  29.31302  22 32 00.04   -08 43 58.1   22.6R 160091    807  Cc0956      
2000 07  29.42109  22 31 59.62   -08 44 00.6         160091    807  Cc0956      
2000 08  25.18432  22 30 06.49   -08 54 46.2   23.0R 160091    807  Cc0956      
2000 08  25.24361  22 30 06.21   -08 54 48.1         160091    807  Cc0956      
2000 09  03.267104 22 29 25.57   -08 58 42.5         160091    645  C~1ILI      
2000 09  19.18728  22 28 16.58   -09 05 19.6   22.8R 160091    695  Cc2364      
2000 09  19.28280  22 28 16.18   -09 05 21.6         160091    695  Cc2364      
2001 08  21.18017  22 35 31.61   -08 19 52.9   21.8R 160091    807  Cg3073      
2001 08  21.25576  22 35 31.26   -08 19 54.7         160091    807  Cg3073      
2002 08  11.33940  22 41 18.14   -07 42 34.0   22.2R 160091    807  Cg3073      
2002 08  12.30468  22 41 14.14   -07 42 56.8         160091    807  Cg3073      
2002 08  12.38292  22 41 13.80   -07 42 58.6         160091    807  Cg3073      
2007 06  26.41628  23 07 54.35   -04 45 36.3   23.9R 160091    250  S~06He      
2007 06  26.42323  23 07 54.34   -04 45 36.3         160091    250  S~06He      
2007 06  26.48156  23 07 54.29   -04 45 36.5         160091    250  S~06He      
2007 06  26.48851  23 07 54.29   -04 45 36.5         160091    250  S~06He      
2007 07  11.32760  23 07 33.58   -04 47 24.6         160091    304  Cv1967      
2007 07  11.42412  23 07 33.38   -04 47 25.8         160091    304  Cv1967      
2007 07  12.23520  23 07 31.78   -04 47 34.8         160091    304  Cv1967      
2007 07  12.41740  23 07 31.40   -04 47 36.8         160091    304  Cv1967      
2013 09  11.29429  23 32 39.248  -01 50 30.45  24.3g 160091    W84  C~50zN      
2013 09  28.07505  23 31 27.456  -01 58 08.06  23.7g 160091    W84  C~50zN      
2013 09  30.12209  23 31 18.946  -01 59 03.33  23.1r 160091    W84  C~50zN      
2013 09  30.12507  23 31 18.938  -01 59 03.49  22.5i 160091    W84  C~50zN      
2013 10  12.09209  23 30 31.460  -02 04 11.05  22.8i 160091    W84  C~50zN      
2013 10  12.11624  23 30 31.363  -02 04 11.56  23.5z 160091    W84  C~50zN      
2014 10  28.12146  23 34 18.840  -01 37 22.15  23.5r 160091    W84  C~50zN      
2014 10  28.15819  23 34 18.724  -01 37 23.01  22.7z 160091    W84  C~50zN      
2015 11  07.03969  23 38 31.025  -01 07 52.02  23.5i 160091    W84  C~50zN      
2016 08  15.26293  23 48 24.695  -00 01 32.33  22.9z 160091    W84  C~50zN      
2016 10  05.15271  23 44 58.068  -00 23 20.55  23.5r 160091    W84  C~50zN      
2016 10  05.15408  23 44 58.058  -00 23 20.66  22.7i 160091    W84  C~50zN      
2016 10  08.06582  23 44 46.309  -00 24 37.52  23.1i 160091    W84  C~50zN      
2016 10  09.14020  23 44 42.011  -00 25 05.32  23.2r 160091    W84  C~50zN      
2017 09  18.22364  23 50 48.144  +00 16 52.47  23.0i 160091    W84  C~50zN      
2017 09  27.15249  23 50 10.007  +00 12 47.35  22.9r 160091    W84  C~50zN      
2017 09  27.15388  23 50 09.999  +00 12 47.31  22.8z 160091    W84  C~50zN      
2017 09  27.15665  23 50 09.995  +00 12 47.25  22.5i 160091    W84  C~50zN      
2017 11  15.03240  23 47 23.936  -00 05 38.26  23.1r 160091    W84  C~50zN      
2017 11  15.06992  23 47 23.852  -00 05 38.93  24.4g 160091    W84  C~50zN      
2017 11  15.07129  23 47 23.858  -00 05 38.78  22.9i 160091    W84  C~50zN      
2017 11  17.02214  23 47 20.056  -00 06 05.60  23.5r 160091    W84  C~50zN      
2018 09  17.28275  23 55 29.664  +00 49 41.12  22.8i 160091    W84  C~50zN      
2018 09  17.28411  23 55 29.655  +00 49 40.73  24.3g 160091    W84  C~50zN      
2018 10  01.23177  23 54 30.325  +00 43 19.55  22.1z 160091    W84  C~50zN      
2019 09  04.385370 00 00 59.526  +01 27 31.66  23.2G 160091    G37  C~4FXH      
2019 09  04.466710 00 00 59.204  +01 27 29.77        160091    G37  C~4FXH      
2019 09  04.483050 00 00 59.123  +01 27 29.34        160091    G37  C~4FXH      
2019 10  26.108180 23 57 29.784  +01 04 54.67  23.3G 160091    G37  C~3Qaq      
2019 10  26.176400 23 57 29.532  +01 04 53.30        160091    G37  C~3Qaq      
2019 10  26.271410 23 57 29.208  +01 04 51.18        160091    G37  C~3Qaq      
2020 09  21.164830 00 04 21.321  +01 51 49.06  23.3G 160091    G37  C~4FXH      
2020 09  21.207350 00 04 21.136  +01 51 47.89        160091    G37  C~4FXH      
2020 09  21.269510 00 04 20.870  +01 51 46.16        160091    G37  C~4FXH      

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     0.25       0.00     0.26
     2   0.0003      0.00     0.19       0.00     0.06
     3   0.0736      0.00     0.22       0.00     0.05
     4   0.0737      0.00     0.09       0.00    -0.32
     5   0.0984      0.00    -0.65       0.00    -1.21
     6   0.1420      0.00     0.03       0.00    -0.10
     7   0.1423      0.00     0.06       0.00     0.18
     8   1.0619      0.00     0.18       0.00    -0.06
     9   1.0621      0.00     0.03       0.00     0.07
    10   2.0343      0.00     0.05       0.00    -0.11
    11   2.0369      0.00     0.09       0.00     0.39
    12   2.0372      0.00    -0.04       0.00     0.48
    13   6.9079      0.00    -0.41       0.00     0.19
    14   6.9079      0.00    -0.47       0.00     0.21
    15   6.9081      0.00    -0.52       0.00     0.22
    16   6.9081      0.00    -0.43       0.00     0.24
    17   6.9487      0.00     0.20       0.00     0.00
    18   6.9490      0.00     0.17       0.00    -0.14
    19   6.9512      0.00     0.37       0.00    -0.10
    20   6.9517      0.00     0.45       0.00    -0.02
    21  13.1197      0.00    -0.03       0.00     0.14
    22  13.1657      0.00    -0.14       0.00     0.39
    23  13.1713      0.00     0.15       0.00    -0.02
    24  13.1713      0.00     0.22       0.00    -0.10
    25  13.2040      0.00     0.14       0.00    -0.05
    26  13.2041      0.00     0.07       0.00     0.03
    27  14.2473      0.00     0.13       0.00    -0.10
    28  14.2474      0.00     0.08       0.00    -0.22
    29  15.2737      0.00     0.04       0.00    -0.17
    30  16.0464      0.00     0.24       0.00     0.27
    31  16.1857      0.00     0.06       0.00    -0.02
    32  16.1857      0.00    -0.00       0.00    -0.09
    33  16.1937      0.00     0.24       0.00    -0.12
    34  16.1967      0.00     0.06       0.00     0.09
    35  17.1387      0.00     0.03       0.00     0.01
    36  17.1631      0.00     0.04       0.00     0.01
    37  17.1632      0.00     0.01       0.00     0.01
    38  17.1632      0.00     0.13       0.00     0.02
    39  17.2970      0.00    -0.07       0.00    -0.12
    40  17.2971      0.00    -0.15       0.00    -0.25
    41  17.2971      0.00    -0.02       0.00    -0.08
    42  17.3024      0.00    -0.07       0.00     0.04
    43  18.1354      0.00     0.05       0.00     0.02
    44  18.1354      0.00     0.00       0.00    -0.33
    45  18.1736      0.00    -0.19       0.00     0.15
    46  19.0994      0.00    -0.01       0.00    -0.11
    47  19.0997      0.00     0.11       0.00     0.04
    48  19.0997      0.00    -0.12       0.00     0.01
    49  19.2411      0.00    -0.06       0.00    -0.08
    50  19.2412      0.00    -0.25       0.00     0.13
    51  19.2415      0.00    -0.11       0.00     0.20
    52  20.1474      0.00     0.06       0.00     0.03
    53  20.1476      0.00     0.03       0.00     0.02
    54  20.1477      0.00     0.06       0.00    -0.02

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.

160091    quality flag:3

Type:      CLASSICAL CLASSICAL CLASSICAL

axisobj        45.322    45.322    45.322
ecceobj         0.110     0.110     0.110
incobj          1.982     1.982     1.982
qmin           39.729    39.678    39.803
qmax           51.052    51.035    50.990
amean          45.177    45.180    45.170
amin           44.799    44.791    44.783
amax           45.574    45.565    45.555
emean           0.106     0.106     0.106
emin            0.091     0.091     0.091
emax            0.120     0.120     0.120
imean           3.486     3.486     3.486
imin            2.832     2.831     2.832
imax            3.993     3.989     3.996
excite_mean     0.122     0.122     0.122
fracstop        1.000     1.000     1.000
cjmean          3.097     3.097     3.097

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       176.3     176.4     176.5
kozaiamp        180.0     180.0     180.0