Orbit Fit and Astrometric record for 01QZ297

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: 01QZ297   
# Created Thu Oct 18 01:07:55 2018
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting   27 observations of   27
# Arc:   8.01y
# First observation: 2000/07/30
#  Last observation: 2008/08/01
# Chi-squared of fit:    71.75 DOF:   48 RMS:  0.29
# Min/Max residuals:    -1.02    0.94
# Exact a, adot, b, bdot, g, gdot:
  1.552803E-05  2.445000E-02  2.239585E-08  2.894249E-04  2.449874E-02  8.015753E-04
# Covariance matrix:
  2.5021E-13 -1.0839E-13  9.0523E-16 -1.0123E-15  1.8032E-14 -3.9207E-13
 -1.0839E-13  1.0755E-13 -1.7176E-15  1.2287E-15  1.0180E-13  5.4109E-13
  9.0523E-16 -1.7176E-15  1.4902E-13 -2.8615E-14 -3.0785E-15 -9.9856E-15
 -1.0123E-15  1.2287E-15 -2.8615E-14  8.7070E-15  1.2095E-15  6.7002E-15
  1.8032E-14  1.0180E-13 -3.0785E-15  1.2095E-15  3.7759E-13  6.7893E-13
 -3.9207E-13  5.4109E-13 -9.9856E-15  6.7002E-15  6.7893E-13  3.0160E-12
#      lat0       lon0       xBary       yBary       zBary        JD0
   -1.770830  -52.603340    0.008034   -0.031539   -1.014549  2451755.716703
# Heliocentric elements and errors
Epoch:              2451756.5000  =  2000/07/31
Mean Anomaly:           26.64310 +/-     0.065
Argument of Peri:      261.25454 +/-     0.075
Long of Asc Node:       16.05620 +/-     0.006
Inclination:             1.85497 +/-     0.000
Eccentricity:         0.06225315 +/-    0.0001
Semi-Major Axis:     44.25835559 +/-    0.0042
Time of Perihelion: 2443797.2244 +/-      19.4
Perihelion:          41.50313368 +/-    0.0047
Aphelion:            47.01357751 +/-    0.0052
Period (y)              294.4429 +/-      0.04
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           25.39479376 +/-    0.0006
Ecliptic Y          -33.21942798 +/-    0.0008
Ecliptic Z           -1.26137362 +/-    0.0000
Ecliptic XDOT         0.00221862 +/-    0.0000
Ecliptic YDOT         0.00159313 +/-    0.0000
Ecliptic ZDOT         0.00002971 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   41.83318563 +/-    0.0007
Geocenter to KBO     40.81844913 +/-    0.0010
# Hcoef:  6.98

The following table shows the complete astrometric record for 01QZ297. 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 (01QZ297) followed by the observatory code and reference code for the source of the astrometry.

2000 07  30.21596  20 41 07.67   -20 08 02.0   22.4R 01QZ297   807  Ch1433      
2000 07  30.32672  20 41 07.11   -20 08 04.5         01QZ297   807  Ch1433      
2000 08  26.99951  20 38 56.48   -20 15 47.8   22.5R 01QZ297   807  Cg3217      
2000 08  27.06585  20 38 56.20   -20 15 48.9         01QZ297   807  Cg3217      
2001 08  19.09858  20 45 16.22   -19 51 03.6   21.8R 01QZ297   807  Cd7926      
2001 08  19.17477  20 45 15.88   -19 51 04.9         01QZ297   807  Cd7926      
2001 08  20.09659  20 45 11.62   -19 51 20.1   21.7R 01QZ297   807  Cd7926      
2001 08  20.17478  20 45 11.24   -19 51 21.6         01QZ297   807  Cd7926      
2002 07  12.34818  20 53 58.61   -19 15 44.5   23.5r 01QZ297   695  Cq1639      
2002 07  12.44666  20 53 58.11   -19 15 46.2   22.5r 01QZ297   695  Cq1639      
2002 08  11.11997  20 51 36.26   -19 25 16.6   21.4R 01QZ297   807  Cg3217      
2002 08  11.29833  20 51 35.37   -19 25 19.8         01QZ297   807  Cg3217      
2002 11  05.22938  20 48 08.67   -19 35 57.0   23.2R 01QZ297   568  Cl8341      
2002 11  06.22237  20 48 09.97   -19 35 49.0         01QZ297   568  Cl8341      
2004 08  15.35657  21 02 28.82   -18 38 13.1   23.0g 01QZ297   568  C~0VDQ      
2004 08  15.38786  21 02 28.69   -18 38 13.9   23.5g 01QZ297   568  C~0VDQ      
2004 08  15.41998  21 02 28.49   -18 38 14.3         01QZ297   568  C~0VDQ      
2004 08  16.32863  21 02 24.20   -18 38 32.1   23.5g 01QZ297   568  C~0VDQ      
2004 10  04.27025  20 59 25.69   -18 49 35.6   23.0i 01QZ297   568  C~0VDQ      
2004 10  04.32238  20 59 25.57   -18 49 35.9   23.1i 01QZ297   568  C~0VDQ      
2004 10  04.37480  20 59 25.46   -18 49 36.0   23.2i 01QZ297   568  C~0VDQ      
2007 05  16.51837  21 23 44.69   -16 57 55.2   23.4R 01QZ297   250  S~06AQ      
2007 05  16.52531  21 23 44.70   -16 57 55.2         01QZ297   250  S~06AQ      
2007 05  16.58156  21 23 44.71   -16 57 55.2         01QZ297   250  S~06AQ      
2007 05  16.58850  21 23 44.72   -16 57 55.3         01QZ297   250  S~06AQ      
2008 08  01.30881  21 25 42.42   -16 49 05.8   23.3R 01QZ297   688  Cz3488      
2008 08  01.40877  21 25 42.01   -16 49 07.2         01QZ297   688  Cz3488      

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     0.10       0.00     0.06
  2   0.0003      0.00     0.02       0.00    -0.43
  3   0.0761      0.00    -0.26       0.00    -0.02
  4   0.0762      0.00    -0.12       0.00    -0.15
  5   1.0538      0.00     0.09       0.00    -0.12
  6   1.0540      0.00     0.39       0.00    -0.14
  7   1.0565      0.00     0.37       0.00     0.06
  8   1.0567      0.00     0.17       0.00    -0.14
  9   1.9497      0.00     0.65       0.00    -0.11
 10   1.9500      0.00    -0.11       0.00     0.04
 11   2.0312      0.00     0.04       0.00     0.24
 12   2.0317      0.00    -0.17       0.00     0.35
 13   2.2670      0.00     0.33       0.00     0.22
 14   2.2697      0.00    -0.25       0.00     0.24
 15   4.0442      0.00    -0.01       0.00     0.17
 16   4.0443      0.00     0.32       0.00    -0.02
 17   4.0444      0.00    -0.35       0.00     0.20
 18   4.0469      0.00    -0.07       0.00    -0.07
 19   4.1808      0.00     0.07       0.00    -0.07
 20   4.1810      0.00    -0.11       0.00    -0.07
 21   4.1811      0.00    -0.13       0.00     0.12
 22   6.7934      0.00    -0.17       0.00     0.34
 23   6.7935      0.00    -0.05       0.00     0.34
 24   6.7936      0.00    -0.16       0.00     0.39
 25   6.7936      0.00    -0.04       0.00     0.30
 26   8.0057      0.00    -0.01       0.00    -1.02
 27   8.0060      0.00     0.94       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.

01QZ297    quality flag:3

Type:      CLASSICAL CLASSICAL CLASSICAL

axisobj        44.348    44.348    44.348
ecceobj         0.064     0.064     0.064
incobj          1.854     1.854     1.854
qmin           40.947    40.953    40.945
qmax           47.988    47.987    48.005
amean          44.355    44.355    44.355
amin           44.006    44.003    44.006
amax           44.715    44.713    44.722
emean           0.059     0.059     0.059
emin            0.043     0.043     0.043
emax            0.073     0.073     0.073
imean           2.253     2.253     2.253
imin            1.567     1.567     1.567
imax            2.753     2.752     2.753
excite_mean     0.071     0.071     0.071
fracstop        1.000     1.000     1.000
cjmean          3.100     3.100     3.100

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       186.7     186.8     186.7
kozaiamp        179.9     180.0     180.0