Orbit Fit and Astrometric record for 01QC298

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: 01QC298   
# Created Sun Dec  5 02:09:07 2021
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting     74 observations of     74
# Arc:  20.04y
# First observation: 2000/07/29
#  Last observation: 2020/08/12
# Chi-squared of fit:   194.56 DOF:    142 RMS:  0.29
# Min/Max residuals:    -1.04    1.02
# Exact a, adot, b, bdot, g, gdot:
  1.288586E-05  2.270563E-02  7.949305E-06  1.340495E-02  2.519961E-02  1.743767E-04
# Covariance matrix:
  1.1708E-13 -1.3823E-14  1.4387E-14 -5.1877E-15  2.0856E-14 -1.9291E-14
 -1.3823E-14  4.5124E-15 -6.6051E-15  2.4332E-15  5.1613E-15  8.9798E-15
  1.4387E-14 -6.6051E-15  9.1487E-14 -9.5835E-15 -7.2349E-15 -1.4827E-14
 -5.1877E-15  2.4332E-15 -9.5835E-15  1.9817E-15  2.8465E-15  5.4573E-15
  2.0856E-14  5.1613E-15 -7.2349E-15  2.8465E-15  5.7475E-14  1.0270E-14
 -1.9291E-14  8.9798E-15 -1.4827E-14  5.4573E-15  1.0270E-14  2.0146E-14
#      lat0       lon0       xBary       yBary       zBary        JD0
    0.599501  -23.534455    0.513532    0.008998   -0.875767  2451754.813763
# Heliocentric elements and errors
Epoch:              2451754.5000  =  2000/07/29
Mean Anomaly:          357.13495 +/-     0.002
Argument of Peri:        4.88074 +/-     0.003
Long of Asc Node:      334.75518 +/-     0.000
Inclination:            30.55082 +/-     0.000
Eccentricity:         0.12689139 +/-    0.0000
Semi-Major Axis:     46.45024156 +/-    0.0020
Time of Perihelion: 2452674.7585 +/-       7.6
Perihelion:          40.55610585 +/-    0.0023
Aphelion:            52.34437727 +/-    0.0027
Period (y)              316.5849 +/-      0.02
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           36.98425798 +/-    0.0003
Ecliptic Y          -16.66052320 +/-    0.0002
Ecliptic Z            0.41550836 +/-    0.0000
Ecliptic XDOT         0.00098131 +/-    0.0000
Ecliptic YDOT         0.00226581 +/-    0.0000
Ecliptic ZDOT         0.00145667 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   40.56576645 +/-    0.0003
Geocenter to KBO     39.68318854 +/-    0.0004
# Hcoef:  6.62

The following table shows the complete astrometric record for 01QC298. 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 (01QC298) followed by the observatory code and reference code for the source of the astrometry.

2000 07  29.31302  22 31 58.79   -08 34 55.1   22.0R 01QC298   807  Ch1433      
2000 07  29.42109  22 31 58.31   -08 34 57.1         01QC298   807  Ch1433      
2000 09  19.18728  22 27 52.52   -08 51 51.9   22.0R 01QC298   695  Cf9826      
2000 09  19.28280  22 27 52.09   -08 51 53.7         01QC298   695  Cf9826      
2001 08  21.17631  22 33 59.60   -07 30 05.0   21.0R 01QC298   807  Cd7926      
2001 08  21.25156  22 33 59.23   -07 30 06.4         01QC298   807  Cd7926      
2001 09  12.26600  22 32 11.43   -07 37 47.0   21.8R 01QC298   695  Cd7926      
2001 09  12.31021  22 32 11.21   -07 37 47.7         01QC298   695  Cd7926      
2001 10  20.19015  22 29 40.66   -07 48 16.3   22.3R 01QC298   695  Ce0366      
2001 10  20.23392  22 29 40.54   -07 48 16.9         01QC298   695  Ce0366      
2002 07  11.23642  22 40 30.85   -06 08 07.7   21.8R 01QC298   304  Cf9826      
2002 07  11.33678  22 40 30.55   -06 08 08.5         01QC298   304  Cf9826      
2002 08  12.29280  22 38 26.43   -06 15 11.8   20.8R 01QC298   807  Cg3218      
2002 08  12.37104  22 38 26.06   -06 15 13.4         01QC298   807  Cg3218      
2003 09  03.04198  22 40 24.86   -05 10 28.6   22.1R 01QC298   304  Ci4512      
2003 09  03.08850  22 40 24.61   -05 10 29.5         01QC298   304  Ci4512      
2003 10  23.03104  22 36 57.10   -05 26 20.0         01QC298   304  Ci9379      
2003 10  23.16306  22 36 56.71   -05 26 21.1         01QC298   304  Ci9379      
2005 06  07.40326  22 52 11.17   -02 37 31.4   22.0R 01QC298   304  Cn6481      
2005 06  07.41249  22 52 11.17   -02 37 31.2         01QC298   304  Cn6481      
2005 07  09.27649  22 51 31.97   -02 33 48.9   22.7R 01QC298   304  Cn8840      
2005 07  09.28162  22 51 31.95   -02 33 48.9         01QC298   304  Cn8840      
2007 10  13.26926  22 52 06.85   -00 37 23.8   22.8V 01QC298   705  Cz2891      
2007 10  13.27009  22 52 06.85   -00 37 23.6   23.9  01QC298   705  Cz2891      
2007 11  04.18251  22 51 02.53   -00 43 51.6   22.6V 01QC298   705  Cz2891      
2007 11  04.18500  22 51 02.52   -00 43 51.5   23.3  01QC298   705  Cz2891      
2011 06  08.59945  23 13 41.627  +04 24 01.46  22.5G 01QC298   F51  C~2r78      
2011 09  02.42428  23 09 53.673  +04 25 48.43  22.3G 01QC298   F51  C~2r78      
2011 09  02.45287  23 09 53.537  +04 25 47.76  22.2G 01QC298   F51  C~2r78      
2011 09  06.49162  23 09 33.966  +04 24 23.00  22.6G 01QC298   F51  C~2r78      
2011 09  06.50393  23 09 33.915  +04 24 22.66  22.9G 01QC298   F51  C~2r78      
2012 10  16.01010  23 10 12.46   +05 19 20.2   22.6R 01QC298   304  C~0p4t      
2012 10  16.13909  23 10 11.97   +05 19 16.7         01QC298   304  C~0p4t      
2012 10  16.24895  23 10 11.56   +05 19 14.0         01QC298   304  C~0p4t      
2012 10  17.01292  23 10 08.72   +05 18 54.5         01QC298   304  C~0p4t      
2012 10  17.13674  23 10 08.25   +05 18 51.3         01QC298   304  C~0p4t      
2012 10  17.19866  23 10 08.01   +05 18 49.7         01QC298   304  C~0p4t      
2012 10  17.99660  23 10 05.08   +05 18 30.0         01QC298   304  C~0p4t      
2012 10  18.06425  23 10 04.84   +05 18 28.0         01QC298   304  C~0p4t      
2012 10  18.19316  23 10 04.42   +05 18 25.2         01QC298   304  C~0p4t      
2012 10  20.01559  23 09 57.84   +05 17 39.3         01QC298   304  C~0p4t      
2012 10  20.08084  23 09 57.60   +05 17 37.7         01QC298   304  C~0p4t      
2012 10  20.21421  23 09 57.13   +05 17 34.5         01QC298   304  C~0p4t      
2013 10  04.40533  23 14 41.465  +06 35 46.76  22.2G 01QC298   F51  C~2r78      
2013 10  04.41768  23 14 41.391  +06 35 46.02  22.1G 01QC298   F51  C~2r78      
2014 08  06.54135  23 22 53.918  +08 05 15.03  22.5G 01QC298   F51  C~2r78      
2014 08  18.45731  23 22 05.101  +08 03 34.26  22.1G 01QC298   F51  C~2r78      
2014 08  18.46896  23 22 05.029  +08 03 33.88  22.5G 01QC298   F51  C~2r78      
2014 08  18.49228  23 22 04.911  +08 03 33.61  23.5G 01QC298   F51  C~2r78      
2014 08  19.47122  23 22 00.622  +08 03 22.20  23.6G 01QC298   F51  C~2r78      
2014 10  01.46510  23 18 36.666  +07 48 18.16  22.8G 01QC298   F51  C~2r78      
2014 11  20.34045  23 15 59.240  +07 27 52.70  22.9G 01QC298   F51  C~2r78      
2015 06  21.58382  23 28 10.796  +09 07 15.14  23.1G 01QC298   F51  C~2r78      
2015 06  24.59403  23 28 09.916  +09 08 27.89  23.1G 01QC298   F51  C~2r78      
2015 07  25.46436  23 27 16.489  +09 15 33.69  22.4G 01QC298   F51  C~2r78      
2015 07  25.47534  23 27 16.449  +09 15 33.55  22.5G 01QC298   F51  C~2r78      
2015 07  25.48628  23 27 16.395  +09 15 33.64  22.8G 01QC298   F51  C~2r78      
2015 07  25.49724  23 27 16.365  +09 15 33.79  23.3G 01QC298   F51  C~2r78      
2016 07  17.51086  23 31 16.576  +10 24 18.08  22.9G 01QC298   F51  C~2r78      
2016 08  26.53604  23 28 51.024  +10 22 36.39  22.9G 01QC298   F51  C~2r78      
2016 10  06.41678  23 25 35.904  +10 07 10.45  22.6G 01QC298   F51  C~2r78      
2016 10  19.39640  23 24 41.848  +10 01 01.97  22.7G 01QC298   F51  C~2r78      
2016 12  15.23775  23 23 09.959  +09 41 34.47  23.0G 01QC298   F51  C~2r78      
2017 09  11.50199  23 31 19.942  +11 28 01.51  23.1G 01QC298   F51  C~2r78      
2017 09  21.46576  23 30 31.142  +11 24 11.30  22.5G 01QC298   F51  C~2r78      
2017 09  21.47814  23 30 31.081  +11 24 10.84  22.7G 01QC298   F51  C~2r78      
2017 09  21.49055  23 30 31.033  +11 24 10.46  22.6G 01QC298   F51  C~2r78      
2017 09  21.50299  23 30 30.953  +11 24 10.43  22.2G 01QC298   F51  C~2r78      
2019 10  26.089740 23 35 32.174  +13 27 25.72  22.6G 01QC298   G37  C~3cV0      
2019 10  26.156240 23 35 31.928  +13 27 23.73        01QC298   G37  C~3cV0      
2019 10  26.267320 23 35 31.522  +13 27 20.33        01QC298   G37  C~3cV0      
2020 08  12.326120 23 44 57.239  +15 01 46.16  22.6G 01QC298   G37  C~43pH      
2020 08  12.392410 23 44 56.964  +15 01 46.20        01QC298   G37  C~43pH      
2020 08  12.462520 23 44 56.703  +15 01 45.97        01QC298   G37  C~43pH      

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     0.23       0.00     0.19
     2   0.0003      0.00    -0.06       0.00    -0.08
     3   0.1420      0.00    -0.04       0.00    -0.04
     4   0.1423      0.00     0.15       0.00    -0.04
     5   1.0619      0.00    -0.02       0.00    -0.12
     6   1.0621      0.00     0.03       0.00     0.02
     7   1.1224      0.00     0.14       0.00    -0.12
     8   1.1225      0.00     0.06       0.00     0.09
     9   1.2262      0.00     0.27       0.00     0.14
    10   1.2263      0.00     0.37       0.00    -0.00
    11   1.9491      0.00    -0.06       0.00     0.53
    12   1.9494      0.00    -0.04       0.00     0.42
    13   2.0369      0.00     0.02       0.00    -0.02
    14   2.0371      0.00    -0.02       0.00    -0.19
    15   3.0958      0.00    -0.68       0.00    -1.04
    16   3.0959      0.00    -0.96       0.00    -0.93
    17   3.2326      0.00    -0.07       0.00    -0.59
    18   3.2330      0.00    -0.28       0.00    -0.03
    19   4.8572      0.00    -0.06       0.00     0.32
    20   4.8572      0.00    -0.07       0.00     0.37
    21   4.9445      0.00     0.66       0.00     1.01
    22   4.9445      0.00     0.56       0.00     1.02
    23   7.2059      0.00    -0.08       0.00    -0.22
    24   7.2059      0.00    -0.03       0.00     0.00
    25   7.2659      0.00     0.13       0.00    -0.49
    26   7.2659      0.00     0.07       0.00    -0.35
    27  10.8591      0.00    -0.01       0.00     0.01
    28  11.0941      0.00     0.07       0.00     0.09
    29  11.0942      0.00     0.13       0.00    -0.00
    30  11.1052      0.00    -0.19       0.00    -0.15
    31  11.1052      0.00    -0.05       0.00    -0.23
    32  12.2155      0.00    -0.29       0.00     0.44
    33  12.2158      0.00    -0.19       0.00     0.21
    34  12.2161      0.00    -0.03       0.00     0.30
    35  12.2182      0.00    -0.02       0.00     0.13
    36  12.2185      0.00    -0.02       0.00     0.05
    37  12.2187      0.00    -0.11       0.00     0.02
    38  12.2209      0.00    -0.21       0.00     0.40
    39  12.2211      0.00    -0.03       0.00     0.09
    40  12.2214      0.00     0.88       0.00     0.53
    41  12.2264      0.00     0.08       0.00     0.05
    42  12.2266      0.00     0.01       0.00     0.06
    43  12.2270      0.00     0.15       0.00     0.17
    44  13.1830      0.00     0.05       0.00     0.05
    45  13.1830      0.00    -0.22       0.00    -0.36
    46  14.0212      0.00     0.22       0.00    -0.09
    47  14.0538      0.00     0.22       0.00    -0.26
    48  14.0538      0.00    -0.09       0.00    -0.50
    49  14.0539      0.00    -0.30       0.00    -0.50
    50  14.0566      0.00    -0.19       0.00    -0.15
    51  14.1743      0.00     0.09       0.00    -0.07
    52  14.3108      0.00     0.04       0.00    -0.14
    53  14.8946      0.00    -0.01       0.00     0.06
    54  14.9029      0.00    -0.07       0.00    -0.13
    55  14.9874      0.00     0.01       0.00     0.09
    56  14.9874      0.00    -0.09       0.00    -0.09
    57  14.9875      0.00    -0.41       0.00    -0.05
    58  14.9875      0.00    -0.36       0.00     0.06
    59  15.9677      0.00    -0.02       0.00    -0.03
    60  16.0773      0.00     0.14       0.00    -0.30
    61  16.1892      0.00     0.07       0.00    -0.08
    62  16.2247      0.00     0.25       0.00     0.09
    63  16.3804      0.00     0.10       0.00     0.12
    64  17.1203      0.00     0.05       0.00     0.11
    65  17.1476      0.00     0.03       0.00    -0.00
    66  17.1476      0.00     0.04       0.00    -0.15
    67  17.1476      0.00     0.24       0.00    -0.22
    68  17.1477      0.00    -0.04       0.00     0.06
    69  19.2410      0.00    -0.07       0.00     0.15
    70  19.2412      0.00    -0.01       0.00     0.17
    71  19.2415      0.00     0.15       0.00     0.14
    72  20.0384      0.00     0.07       0.00     0.01
    73  20.0385      0.00    -0.16       0.00     0.12
    74  20.0387      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.

01QC298    quality flag:3

Type:       SCATEXTD  SCATEXTD  SCATEXTD

axisobj        46.534    46.534    46.534
ecceobj         0.128     0.128     0.128
incobj         30.526    30.526    30.526
qmin           39.613    39.613    39.609
qmax           53.383    53.411    53.398
amean          46.327    46.326    46.326
amin           45.946    45.959    45.952
amax           46.739    46.746    46.744
emean           0.129     0.129     0.129
emin            0.115     0.115     0.115
emax            0.142     0.143     0.142
imean          31.538    31.538    31.538
imin           31.274    31.279    31.281
imax           31.828    31.828    31.828
excite_mean     0.539     0.539     0.539
fracstop        1.000     1.000     1.000
cjmean          2.747     2.747     2.747

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       166.7     166.6     166.6
kozaiamp        180.0     179.9     180.0