Orbit Fit and Astrometric record for 01QU297

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: 01QU297   
# Created Wed Dec 13 02:37:08 2017
# Orbit generated from Bernstein formalism
# Fitting    6 observations of    6
# Arc:  23.17d
# First observation: 2001/08/20
#  Last observation: 2001/09/12
Preliminary a, adot, b, bdot, g, gdot:
   0.000001   0.043226  -0.000000  -0.001290   0.026868   0.000000
# WARNING MRQMIN stopped after  13 iterations -- oscilliatory solution
# WARNING Fitting with energy constraint
# WARNING MRQMIN stopped after  13 iterations -- oscilliatory solution
# Chi-squared of fit:     2.56 DOF:    7 RMS:  0.12
# Min/Max residuals:    -0.17    0.22
# Exact a, adot, b, bdot, g, gdot:
  1.605142E-05  2.394723E-02 -1.176469E-06 -1.149035E-03  2.370992E-02  5.961146E-03
# Covariance matrix:
  3.6541E-11  5.1345E-08  1.5593E-13 -3.7828E-10  8.4727E-09 -7.2364E-08
  5.1345E-08  7.2969E-05  2.2149E-10 -5.3733E-07  1.2035E-05 -1.0617E-04
  1.5593E-13  2.2149E-10  3.7775E-13 -7.7974E-12  3.6539E-11 -3.1731E-10
 -3.7828E-10 -5.3733E-07 -7.7974E-12  4.2460E-09 -8.8643E-08  7.6839E-07
  8.4727E-09  1.2035E-05  3.6539E-11 -8.8643E-08  1.9855E-06 -1.7245E-05
 -7.2364E-08 -1.0617E-04 -3.1731E-10  7.6839E-07 -1.7245E-05  3.6519E-04
#      lat0       lon0       xBary       yBary       zBary        JD0
   -1.745695  -34.525135   -0.023720   -0.030943   -1.011881  2452141.630443
# Heliocentric elements and errors
Epoch:              2452140.5000  =  2001/08/19
Mean Anomaly:           38.64603 +/-    68.426
Argument of Peri:      144.41427 +/-   161.405
Long of Asc Node:      113.84173 +/-     7.928
Inclination:             3.24441 +/-     0.731
Eccentricity:         0.29838178 +/-    0.6730
Semi-Major Axis:     52.86712119 +/-   26.9044
Time of Perihelion: 2437068.2079 +/-   24079.2
Perihelion:          37.09253524 +/-   40.2755
Aphelion:            68.64170715 +/-   49.8602
Period (y)              384.4029 +/-    293.44
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           35.58267431 +/-    2.0640
Ecliptic Y          -24.44129550 +/-    1.4201
Ecliptic Z           -1.28489475 +/-    0.0764
Ecliptic XDOT         0.00212215 +/-    0.0016
Ecliptic YDOT         0.00189191 +/-    0.0018
Ecliptic ZDOT        -0.00015338 +/-    0.0001
# Distances at JD0 (AU)
Heliocenter to KBO   43.18743557 +/-    1.8809
Geocenter to KBO     42.17643907 +/-    2.5065
# Hcoef:  6.03

The following table shows the complete astrometric record for 01QU297. 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 (01QU297) followed by the observatory code and reference code for the source of the astrometry.

2001 08  20.12970  21 53 23.62   -14 40 20.7   22.1R 01QU297   807  Cd7926      
2001 08  20.20833  21 53 23.28   -14 40 22.7         01QU297   807  Cd7926      
2001 08  21.14449  21 53 19.05   -14 40 45.1         01QU297   807  Cd7926      
2001 08  21.21817  21 53 18.71   -14 40 47.1         01QU297   807  Cd7926      
2001 09  12.24807  21 51 43.46   -14 49 03.8   21.9R 01QU297   695  Ch1433      
2001 09  12.29536  21 51 43.26   -14 49 05.0         01QU297   695  Ch1433      

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    -0.02       0.00     0.08
  2   0.0002     -5.32     0.22      -0.21    -0.11
  3   0.0028    -70.66    -0.06      -0.50     0.11
  4   0.0030    -75.98    -0.17      -0.71    -0.09
  5   0.0633  -1544.25     0.08      -1.40     0.10
  6   0.0634  -1547.38    -0.08      -1.55    -0.10

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.

01QU297    quality flag:0

Type:      ERR2LARGE ERR2LARGE ERR2LARGE

axisobj         0.000     0.000     0.000
ecceobj        -1.000    -1.000    -1.000
incobj         -1.000    -1.000    -1.000
qmin            0.000     0.000     0.000
qmax            0.000     0.000     0.000
amean           0.000     0.000     0.000
amin            0.000     0.000     0.000
amax            0.000     0.000     0.000
emean           0.000     0.000     0.000
emin            0.000     0.000     0.000
emax            0.000     0.000     0.000
imean           0.000     0.000     0.000
imin            0.000     0.000     0.000
imax            0.000     0.000     0.000
excite_mean     0.000     0.000     0.000
fracstop        0.000     0.000     0.000
cjmean          0.000     0.000     0.000

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         0.0       0.0       0.0
kozaiamp          0.0       0.0       0.0