Orbit Fit and Astrometric record for 00QL226

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: 00QL226   
# Created Fri Dec  3 02:08:55 2021
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting     19 observations of     19
# Arc:  18.14y
# First observation: 2000/08/29
#  Last observation: 2018/10/18
# Chi-squared of fit:    12.23 DOF:     32 RMS:  0.14
# Min/Max residuals:    -0.28    0.28
# Exact a, adot, b, bdot, g, gdot:
  1.775470E-05  3.046058E-02 -7.743303E-07 -1.310421E-03  2.770791E-02 -3.339346E-03
# Covariance matrix:
  2.0982E-13 -2.3527E-14 -3.2887E-16  4.8892E-16  3.0770E-15 -1.9066E-14
 -2.3527E-14  3.7034E-14  8.8072E-16 -1.4327E-15  1.2133E-13  5.4900E-14
 -3.2887E-16  8.8072E-16  2.0154E-13 -1.2574E-14  2.4935E-15  1.3739E-15
  4.8892E-16 -1.4327E-15 -1.2574E-14  1.1886E-15 -4.4315E-15 -2.2139E-15
  3.0770E-15  1.2133E-13  2.4935E-15 -4.4315E-15  7.3743E-13  1.6711E-13
 -1.9066E-14  5.4900E-14  1.3739E-15 -2.2139E-15  1.6711E-13  8.4985E-14
#      lat0       lon0       xBary       yBary       zBary        JD0
    0.393354  -21.187404    0.053731    0.006736   -1.005119  2451785.653693
# Heliocentric elements and errors
Epoch:              2451786.5000  =  2000/08/30
Mean Anomaly:          330.47626 +/-     0.012
Argument of Peri:      214.05327 +/-     0.016
Long of Asc Node:      167.58000 +/-     0.000
Inclination:             2.48810 +/-     0.000
Eccentricity:         0.19013843 +/-    0.0001
Semi-Major Axis:     43.85221633 +/-    0.0064
Time of Perihelion: 2460485.2068 +/-      21.5
Perihelion:          35.51422479 +/-    0.0063
Aphelion:            52.19020788 +/-    0.0084
Period (y)              290.3993 +/-      0.06
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           34.57397006 +/-    0.0010
Ecliptic Y          -13.45204405 +/-    0.0004
Ecliptic Z            0.24773342 +/-    0.0000
Ecliptic XDOT         0.00077369 +/-    0.0000
Ecliptic YDOT         0.00293061 +/-    0.0000
Ecliptic ZDOT        -0.00013159 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   37.09964346 +/-    0.0010
Geocenter to KBO     36.09088077 +/-    0.0011
# Hcoef:  8.02

The following table shows the complete astrometric record for 00QL226. 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 (00QL226) followed by the observatory code and reference code for the source of the astrometry.

2000 08  29.15295  22 41 05.75   -07 54 03.7         00QL226   809  Cb8401      
2000 08  29.25209  22 41 05.24   -07 54 07.0         00QL226   809  Cb8401      
2000 08  30.13214  22 41 00.88   -07 54 33.5         00QL226   809  Cb8401      
2000 08  30.21740  22 41 00.46   -07 54 36.4   23.7R 00QL226   809  Cb8401      
2000 08  30.30047  22 41 00.02   -07 54 38.7         00QL226   809  Cb8401      
2000 08  30.34795  22 40 59.78   -07 54 40.5         00QL226   809  Cb8401      
2000 08  30.39124  22 40 59.56   -07 54 41.4         00QL226   809  Cb8401      
2013 09  30.16242  00 07 01.563  +00 04 25.99  23.3r 00QL226   W84  C~52RV      
2013 10  13.09753  00 05 57.930  -00 02 34.74  22.9z 00QL226   W84  C~52RV      
2013 10  13.11488  00 05 57.864  -00 02 35.31  23.9i 00QL226   W84  C~52RV      
2013 11  22.07119  00 03 34.485  -00 18 10.89  23.4i 00QL226   W84  C~52RV      
2013 11  23.09553  00 03 32.440  -00 18 23.69  23.4i 00QL226   W84  C~52RV      
2016 09  09.33021  00 29 43.975  +02 16 30.35  23.8r 00QL226   W84  C~52RV      
2017 08  22.32182  00 38 01.344  +03 05 11.54  23.7i 00QL226   W84  C~52RV      
2017 09  27.19789  00 35 20.055  +02 47 06.54  23.2i 00QL226   W84  C~52RV      
2017 09  27.19925  00 35 20.041  +02 47 06.52  23.9r 00QL226   W84  C~52RV      
2018 09  09.25958  00 43 52.538  +03 37 02.12  22.8z 00QL226   W84  C~52RV      
2018 10  10.23897  00 41 19.083  +03 20 12.23  22.6i 00QL226   W84  C~52RV      
2018 10  18.15486  00 40 39.222  +03 15 55.00  22.8z 00QL226   W84  C~52RV      

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    -0.07       0.00    -0.02
     2   0.0003      0.00    -0.18       0.00    -0.28
     3   0.0027      0.00     0.07       0.00     0.22
     4   0.0029      0.00     0.25       0.00    -0.06
     5   0.0031      0.00    -0.03       0.00     0.18
     6   0.0033      0.00    -0.03       0.00    -0.17
     7   0.0034      0.00    -0.06       0.00     0.25
     8  13.0870      0.00     0.23       0.00    -0.12
     9  13.1224      0.00    -0.26       0.00    -0.01
    10  13.1224      0.00     0.01       0.00    -0.04
    11  13.2318      0.00     0.13       0.00    -0.24
    12  13.2346      0.00     0.04       0.00    -0.03
    13  16.0306      0.00     0.04       0.00     0.15
    14  16.9806      0.00    -0.13       0.00     0.03
    15  17.0788      0.00     0.10       0.00    -0.03
    16  17.0788      0.00    -0.00       0.00    -0.01
    17  18.0290      0.00     0.10       0.00    -0.07
    18  18.1139      0.00    -0.11       0.00     0.02
    19  18.1355      0.00    -0.06       0.00     0.28

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.

00QL226    quality flag:3

Type:         7:4EEE    7:4EEE    7:4EEE

axisobj        43.953    43.953    43.953
ecceobj         0.191     0.191     0.191
incobj          2.487     2.487     2.487
qmin           35.106    35.104    35.106
qmax           52.871    52.866    52.870
amean          43.727    43.727    43.727
amin           43.253    43.254    43.252
amax           44.263    44.263    44.262
emean           0.182     0.182     0.182
emin            0.167     0.167     0.167
emax            0.196     0.195     0.196
imean           3.404     3.403     3.405
imin            2.170     2.170     2.170
imax            4.578     4.576     4.581
excite_mean     0.192     0.192     0.192
fracstop        1.000     1.000     1.000
cjmean          3.054     3.054     3.054

libcent 0       181.2     180.8     181.0
libamp  0       111.7     110.8     111.1
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       188.0     187.3     188.0
kozaiamp        180.0     180.0     179.9