Orbit Fit and Astrometric record for 01QA298

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: 01QA298   
# Created Fri Nov 16 02:07:54 2018
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting   19 observations of   19
# Arc:  14.14y
# First observation: 2000/07/29
#  Last observation: 2014/09/19
# Chi-squared of fit:    53.89 DOF:   32 RMS:  0.30
# Min/Max residuals:    -0.58    0.81
# Exact a, adot, b, bdot, g, gdot:
  1.776682E-05  2.658822E-02 -7.039820E-06 -1.136698E-02  2.660462E-02 -2.623246E-03
# Covariance matrix:
  5.6910E-13 -1.6636E-13 -1.1593E-13  8.1003E-14  1.0978E-12 -5.0472E-13
 -1.6636E-13  6.9603E-14  4.8703E-14 -3.3787E-14 -3.1297E-13  2.0654E-13
 -1.1593E-13  4.8703E-14  1.9714E-13 -4.0347E-14 -2.6303E-13  1.5374E-13
  8.1003E-14 -3.3787E-14 -4.0347E-14  2.0040E-14  1.8586E-13 -1.0699E-13
  1.0978E-12 -3.1297E-13 -2.6303E-13  1.8586E-13  3.7451E-12 -1.1917E-12
 -5.0472E-13  2.0654E-13  1.5374E-13 -1.0699E-13 -1.1917E-12  6.5956E-13
#      lat0       lon0       xBary       yBary       zBary        JD0
   -5.126003  -51.323395    0.047789   -0.090786   -1.010101  2451754.708683
# Heliocentric elements and errors
Epoch:              2451754.5000  =  2000/07/29
Mean Anomaly:          335.56831 +/-     0.009
Argument of Peri:      228.23958 +/-     0.015
Long of Asc Node:      117.12492 +/-     0.000
Inclination:            23.67297 +/-     0.000
Eccentricity:         0.18887081 +/-    0.0003
Semi-Major Axis:     46.16320779 +/-    0.0489
Time of Perihelion: 2459529.3758 +/-     169.7
Perihelion:          37.44432515 +/-    0.0424
Aphelion:            54.88209043 +/-    0.0600
Period (y)              313.6550 +/-      0.50
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           23.99815872 +/-    0.0019
Ecliptic Y          -30.04363825 +/-    0.0024
Ecliptic Z           -3.35857140 +/-    0.0003
Ecliptic XDOT         0.00189563 +/-    0.0000
Ecliptic YDOT         0.00200699 +/-    0.0000
Ecliptic ZDOT        -0.00114082 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   38.59814207 +/-    0.0022
Geocenter to KBO     37.58755997 +/-    0.0031
# Hcoef:  6.93

The following table shows the complete astrometric record for 01QA298. 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 (01QA298) followed by the observatory code and reference code for the source of the astrometry.

2000 07  29.20794  20 50 14.10   -23 02 00.9   22.2R 01QA298   807  Cg3217      
2000 07  29.32121  20 50 13.48   -23 02 04.1         01QA298   807  Cg3217      
2001 08  19.11360  20 55 35.00   -23 23 34.6   21.8R 01QA298   807  Cd7926      
2001 08  19.19162  20 55 34.59   -23 23 36.1         01QA298   807  Cd7926      
2001 08  20.10093  20 55 29.95   -23 23 58.2         01QA298   807  Cd7926      
2001 08  20.17923  20 55 29.56   -23 24 00.1         01QA298   807  Cd7926      
2002 08  09.15297  21 03 41.16   -23 30 41.9   22.1R 01QA298   807  Cg3217      
2002 08  09.30253  21 03 40.38   -23 30 45.9         01QA298   807  Cg3217      
2002 08  11.17095  21 03 30.44   -23 31 37.2         01QA298   807  Cg3217      
2002 08  12.16024  21 03 25.19   -23 32 03.4         01QA298   807  Cg3217      
2002 08  12.23067  21 03 24.81   -23 32 05.3         01QA298   807  Cg3217      
2008 08  01.34020  21 48 41.15   -24 08 30.3   22.4R 01QA298   688  Cz3488      
2008 08  01.39365  21 48 40.87   -24 08 31.9         01QA298   688  Cz3488      
2010 08  13.14832  22 02 50.60   -24 18 13.5   22.1R 01QA298   807   ~0NFN      
2010 08  13.22114  22 02 50.20   -24 18 16.2         01QA298   807   ~0NFN      
2010 08  13.25304  22 02 50.01   -24 18 17.2         01QA298   807   ~0NFN      
2014 09  19.04024  22 30 07.43   -24 27 50.9   24.0V 01QA298   W84  C~2J8m      
2014 09  19.10771  22 30 07.10   -24 27 52.3         01QA298   W84  C~2J8m      
2014 09  19.20425  22 30 06.62   -24 27 54.5         01QA298   W84  C~2J8m      

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    -0.44       0.00    -0.05
  2   0.0003      0.00    -0.58       0.00    -0.16
  3   1.0566      0.00     0.19       0.00    -0.04
  4   1.0568      0.00     0.13       0.00     0.35
  5   1.0593      0.00    -0.08       0.00     0.01
  6   1.0595      0.00     0.14       0.00    -0.02
  7   2.0286      0.00     0.10       0.00    -0.44
  8   2.0290      0.00     0.53       0.00    -0.32
  9   2.0341      0.00     0.21       0.00    -0.42
 10   2.0368      0.00     0.12       0.00     0.15
 11   2.0370      0.00     0.11       0.00     0.14
 12   8.0086      0.00    -0.26       0.00     0.54
 13   8.0087      0.00    -0.33       0.00     0.81
 14  10.0395      0.00     0.24       0.00     0.20
 15  10.0397      0.00     0.05       0.00     0.04
 16  10.0398      0.00    -0.26       0.00     0.15
 17  14.1405      0.00     0.04       0.00    -0.36
 18  14.1407      0.00     0.10       0.00    -0.26
 19  14.1410      0.00     0.07       0.00    -0.33

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.

01QA298    quality flag:3

Type:       SCATEXTD  SCATEXTD  SCATEXTD

axisobj        46.264    46.264    46.264
ecceobj         0.190     0.190     0.190
incobj         23.656    23.656    23.656
qmin           36.723    36.725    36.721
qmax           56.075    56.025    56.014
amean          46.188    46.175    46.188
amin           45.783    45.770    45.788
amax           46.666    46.662    46.648
emean           0.185     0.185     0.185
emin            0.170     0.170     0.171
emax            0.202     0.202     0.202
imean          22.081    22.077    22.108
imin           21.617    21.617    21.617
imax           22.527    22.547    22.561
excite_mean     0.419     0.419     0.419
fracstop        1.000     1.000     1.000
cjmean          2.908     2.908     2.908

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       178.7     179.8     178.5
kozaiamp        179.9     180.0     180.0