Orbit Fit and Astrometric record for 00QH226

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: 00QH226   
# Created Sat Nov 27 02:08:58 2021
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting     43 observations of     43
# Arc:  17.33y
# First observation: 2000/08/25
#  Last observation: 2017/12/23
# Chi-squared of fit:    25.81 DOF:     80 RMS:  0.14
# Min/Max residuals:    -0.41    0.44
# Exact a, adot, b, bdot, g, gdot:
  1.629149E-05  3.621733E-02 -5.490242E-07  1.733854E-03  3.105124E-02  4.069704E-03
# Covariance matrix:
  2.0922E-13 -2.3565E-14  1.1573E-16 -5.0826E-16 -4.0839E-15 -1.7904E-14
 -2.3565E-14  6.3082E-14 -6.9301E-16  3.0216E-15  3.0761E-14  1.0631E-13
  1.1573E-16 -6.9301E-16  2.0747E-13 -1.3192E-14 -3.7339E-16 -1.1842E-15
 -5.0826E-16  3.0216E-15 -1.3192E-14  1.1387E-15  1.3720E-15  5.1835E-15
 -4.0839E-15  3.0761E-14 -3.7339E-16  1.3720E-15  8.9831E-14  4.6823E-14
 -1.7904E-14  1.0631E-13 -1.1842E-15  5.1835E-15  4.6823E-14  1.8249E-13
#      lat0       lon0       xBary       yBary       zBary        JD0
   -0.627791  -21.353768    0.116962   -0.011127   -1.000947  2451781.759453
# Heliocentric elements and errors
Epoch:              2451782.5000  =  2000/08/26
Mean Anomaly:           26.68473 +/-     0.004
Argument of Peri:      308.24601 +/-     0.005
Long of Asc Node:      350.99747 +/-     0.000
Inclination:             2.80173 +/-     0.000
Eccentricity:         0.19296946 +/-    0.0000
Semi-Major Axis:     39.65252542 +/-    0.0018
Time of Perihelion: 2445022.2154 +/-       1.1
Perihelion:          32.00079920 +/-    0.0018
Aphelion:            47.30425165 +/-    0.0024
Period (y)              249.6977 +/-      0.02
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           30.88768443 +/-    0.0003
Ecliptic Y          -12.19450923 +/-    0.0001
Ecliptic Z           -0.35289670 +/-    0.0000
Ecliptic XDOT         0.00149124 +/-    0.0000
Ecliptic YDOT         0.00284819 +/-    0.0000
Ecliptic ZDOT         0.00014909 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   33.20956885 +/-    0.0003
Geocenter to KBO     32.20480275 +/-    0.0003
# Hcoef:  9.02

The following table shows the complete astrometric record for 00QH226. 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 (00QH226) followed by the observatory code and reference code for the source of the astrometry.

2000 08  25.25871  22 42 01.16   -08 54 36.4         00QH226   807  Ch1309      
2000 08  29.12843  22 41 39.68   -08 56 41.6         00QH226   809  Cb8401      
2000 08  29.22378  22 41 39.11   -08 56 44.8         00QH226   809  Cb8401      
2000 08  30.10532  22 41 34.22   -08 57 13.8         00QH226   809  Cb8401      
2000 08  30.19597  22 41 33.72   -08 57 16.3         00QH226   809  Cb8401      
2000 08  30.27500  22 41 33.25   -08 57 19.2   23.9R 00QH226   809  Cb8401      
2000 08  30.32187  22 41 32.98   -08 57 20.3         00QH226   809  Cb8401      
2000 08  30.36952  22 41 32.73   -08 57 22.1         00QH226   809  Cb8401      
2015 06  23.54553  00 28 26.244  +03 52 57.98  24.8r 00QH226   568  C~2lRJ      
2015 07  14.59595  00 28 39.684  +03 55 12.31  24.6r 00QH226   568  C~2lRJ      
2015 07  19.57506  00 28 36.329  +03 55 01.95  24.7r 00QH226   568  C~2lRJ      
2015 08  11.48002  00 27 50.624  +03 50 57.31  24.5r 00QH226   568  C~2lRJ      
2015 08  11.52446  00 27 50.477  +03 50 56.41  24.6r 00QH226   568  C~2lRJ      
2015 09  08.38855  00 25 59.647  +03 39 51.99  25.0r 00QH226   568  C~2lRJ      
2015 09  08.49278  00 25 59.148  +03 39 48.96  25.0r 00QH226   568  C~2lRJ      
2015 09  08.53500  00 25 58.943  +03 39 47.81  24.8r 00QH226   568  C~2lRJ      
2015 09  09.51188  00 25 54.264  +03 39 19.06  24.8w 00QH226   568  C~2lRJ      
2015 09  10.45287  00 25 49.735  +03 38 51.15  24.8w 00QH226   568  C~2lRJ      
2015 09  16.43732  00 25 20.149  +03 35 48.59  24.4w 00QH226   568  C~2lRJ      
2015 10  03.36404  00 23 52.746  +03 26 42.63  24.8w 00QH226   568  C~2lRJ      
2015 10  07.39133  00 23 31.849  +03 24 30.89  24.6r 00QH226   568  C~2lRJ      
2015 11  07.22874  00 21 08.950  +03 09 17.50  24.2w 00QH226   568  C~2lRJ      
2015 11  07.28121  00 21 08.742  +03 09 16.25        00QH226   568  C~2lRJ      
2015 11  10.35840  00 20 57.341  +03 08 02.30  25.0w 00QH226   568  C~2lRJ      
2015 12  07.30512  00 19 52.126  +03 00 50.95  24.7w 00QH226   568  C~2lRJ      
2016 01  01.23433  00 19 57.018  +03 01 07.44  24.5w 00QH226   568  C~2lRJ      
2016 09  06.42437  00 32 31.515  +04 27 15.24  25.1w 00QH226   568  C~2lRJ      
2016 09  06.46487  00 32 31.327  +04 27 14.02  24.8w 00QH226   568  C~2lRJ      
2016 09  25.31706  00 30 58.042  +04 17 40.44  24.7w 00QH226   568  C~2lRJ      
2016 09  25.34339  00 30 57.883  +04 17 39.78  24.9w 00QH226   568  C~2lRJ      
2016 09  26.42319  00 30 52.288  +04 17 05.03  24.7w 00QH226   568  C~2lRJ      
2016 10  30.34865  00 28 03.956  +03 59 21.47  24.9w 00QH226   568  C~2lRJ      
2016 11  03.30427  00 27 47.130  +03 57 33.34  25.3w 00QH226   568  C~2lRJ      
2016 11  03.35669  00 27 46.909  +03 57 31.71  25.1w 00QH226   568  C~2lRJ      
2016 12  24.27431  00 26 06.354  +03 46 17.29  24.8w 00QH226   568  C~2lRJ      
2017 01  02.26396  00 26 15.781  +03 47 11.01        00QH226   568  C~2lRJ      
2017 01  29.22410  00 27 33.836  +03 55 14.74  24.1w 00QH226   568  C~2lRJ      
2017 05  30.59780  00 39 39.167  +05 14 16.18  24.2w 00QH226   568  C~2lRJ      
2017 05  30.60776  00 39 39.183  +05 14 16.58  24.3w 00QH226   568  C~2lRJ      
2017 09  16.51863  00 38 07.528  +05 08 37.19  24.2w 00QH226   568  C~2lRJ      
2017 09  22.47204  00 37 37.664  +05 05 34.85  24.5w 00QH226   568  C~2lRJ      
2017 11  22.34219  00 33 02.476  +04 36 31.87  24.7w 00QH226   568  C~2lRJ      
2017 12  23.31121  00 32 20.713  +04 31 39.07  25.1w 00QH226   568  C~2lRJ      

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     0.30       0.00     0.44
     2   0.0106      0.00     0.22       0.00     0.20
     3   0.0109      0.00    -0.22       0.00     0.09
     4   0.0133      0.00    -0.06       0.00    -0.41
     5   0.0135      0.00     0.15       0.00     0.03
     6   0.0137      0.00    -0.17       0.00    -0.32
     7   0.0139      0.00    -0.25       0.00     0.09
     8   0.0140      0.00     0.03       0.00    -0.18
     9  14.8262      0.00    -0.01       0.00     0.13
    10  14.8839      0.00     0.07       0.00     0.06
    11  14.8975      0.00     0.04       0.00    -0.01
    12  14.9602      0.00    -0.04       0.00     0.04
    13  14.9603      0.00    -0.17       0.00    -0.09
    14  15.0366      0.00    -0.08       0.00    -0.02
    15  15.0369      0.00     0.03       0.00    -0.01
    16  15.0370      0.00     0.03       0.00     0.07
    17  15.0397      0.00    -0.06       0.00     0.02
    18  15.0423      0.00    -0.00       0.00     0.00
    19  15.0587      0.00    -0.01       0.00     0.03
    20  15.1050      0.00     0.04       0.00     0.06
    21  15.1160      0.00    -0.03       0.00     0.01
    22  15.2005      0.00     0.08       0.00     0.02
    23  15.2006      0.00     0.04       0.00     0.06
    24  15.2090      0.00     0.06       0.00     0.04
    25  15.2828      0.00     0.03       0.00     0.03
    26  15.3511      0.00    -0.04       0.00     0.07
    27  16.0333      0.00    -0.16       0.00     0.03
    28  16.0334      0.00    -0.11       0.00    -0.06
    29  16.0850      0.00     0.22       0.00    -0.19
    30  16.0851      0.00    -0.09       0.00    -0.01
    31  16.0881      0.00    -0.03       0.00    -0.01
    32  16.1809      0.00    -0.04       0.00     0.03
    33  16.1918      0.00     0.02       0.00     0.21
    34  16.1919      0.00     0.04       0.00    -0.02
    35  16.3313      0.00     0.01       0.00    -0.18
    36  16.3559      0.00     0.06       0.00     0.04
    37  16.4297      0.00    -0.01       0.00     0.08
    38  16.7621      0.00     0.43       0.00    -0.20
    39  16.7621      0.00     0.06       0.00    -0.09
    40  17.0603      0.00     0.11       0.00    -0.02
    41  17.0766      0.00    -0.24       0.00     0.14
    42  17.2432      0.00     0.01       0.00     0.10
    43  17.3280      0.00    -0.01       0.00    -0.22

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.

00QH226    quality flag:3

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

axisobj        39.747    39.747    39.747
ecceobj         0.195     0.195     0.195
incobj          2.799     2.799     2.799
qmin           31.264    31.282    31.205
qmax           48.411    48.432    48.432
amean          39.457    39.457    39.457
amin           38.922    38.925    38.906
amax           40.056    40.043    40.058
emean           0.192     0.192     0.192
emin            0.175     0.175     0.175
emax            0.210     0.210     0.211
imean           3.497     3.498     3.478
imin            2.721     2.709     2.580
imax            4.131     4.129     4.183
excite_mean     0.202     0.202     0.202
fracstop        1.000     1.000     1.000
cjmean          3.005     3.005     3.005

libcent 0       180.0     180.5     180.4
libamp  0       124.4     124.8     125.1
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       187.7     189.5     181.2
kozaiamp        180.0     180.0     180.0