Orbit Fit and Astrometric record for 03QC112

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: 03QC112   
# Created Tue Dec 12 02:37:20 2017
# Orbit generated from Bernstein formalism
# Fitting    8 observations of    8
# Arc:  59.88d
# First observation: 2003/08/24
#  Last observation: 2003/10/23
Preliminary a, adot, b, bdot, g, gdot:
  -0.000000   0.076847   0.000004  -0.013552   0.046253   0.000000
# Chi-squared of fit:     6.55 DOF:   10 RMS:  0.16
# Min/Max residuals:    -0.28    0.28
# Exact a, adot, b, bdot, g, gdot:
  1.863286E-05  4.489421E-02 -5.211323E-06 -1.336072E-02  4.103753E-02 -6.762013E-03
# Covariance matrix:
  1.4256E-12  1.9188E-09  2.6631E-13 -1.0625E-11  3.1133E-10 -4.6442E-09
  1.9188E-09  5.3631E-06  6.8724E-10 -2.4484E-08  8.5572E-07 -1.5250E-05
  2.6631E-13  6.8724E-10  5.2294E-13 -6.1154E-12  1.0997E-10 -1.9000E-09
 -1.0625E-11 -2.4484E-08 -6.1154E-12  1.5593E-10 -3.9354E-09  6.4614E-08
  3.1133E-10  8.5572E-07  1.0997E-10 -3.9354E-09  1.3661E-07 -2.4206E-06
 -4.6442E-09 -1.5250E-05 -1.9000E-09  6.4614E-08 -2.4206E-06  4.5580E-05
#      lat0       lon0       xBary       yBary       zBary        JD0
   -1.856335  -15.364966    0.247027   -0.031847   -0.984361  2452875.770213
# Heliocentric elements and errors
Epoch:              2452870.5000  =  2003/08/19
Mean Anomaly:          234.18700 +/-    41.076
Argument of Peri:      328.86336 +/-    34.793
Long of Asc Node:      158.13433 +/-     0.299
Inclination:            16.73212 +/-     0.783
Eccentricity:         0.21305605 +/-    0.0336
Semi-Major Axis:     22.05745475 +/-    1.5588
Time of Perihelion: 2466094.2477 +/-    4083.5
Perihelion:          17.35798053 +/-    1.4331
Aphelion:            26.75692898 +/-    2.0309
Period (y)              103.5956 +/-     10.98
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           24.36615809 +/-    0.2115
Ecliptic Y           -6.94839195 +/-    0.0581
Ecliptic Z           -0.78950621 +/-    0.0071
Ecliptic XDOT         0.00032573 +/-    0.0004
Ecliptic YDOT         0.00300950 +/-    0.0002
Ecliptic ZDOT        -0.00087612 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   25.34981520 +/-    0.2039
Geocenter to KBO     24.36793578 +/-    0.2195
# Hcoef:  8.68

The following table shows the complete astrometric record for 03QC112. 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 (03QC112) followed by the observatory code and reference code for the source of the astrometry.

2003 08  24.26947  23 06 17.37   -07 45 44.1   21.8R 03QC112   807  Ci4592      
2003 08  24.36129  23 06 16.76   -07 45 48.7         03QC112   807  Ci4592      
2003 09  03.10301  23 05 07.92   -07 54 24.7   22.6R 03QC112   304  Ci4592      
2003 09  03.17936  23 05 07.37   -07 54 29.3         03QC112   304  Ci4592      
2003 10  22.13867  22 59 53.62   -08 32 03.6   22.7R 03QC112   695  Cj4700      
2003 10  22.21847  22 59 53.24   -08 32 06.3         03QC112   695  Cj4700      
2003 10  23.12160  22 59 49.17   -08 32 34.9         03QC112   304  Ci9432      
2003 10  23.14826  22 59 49.02   -08 32 35.6         03QC112   304  Ci9432      

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    -0.28       0.00     0.01
  2   0.0003    -10.14     0.28      -0.73     0.00
  3   0.0269  -1153.08     0.05     -80.90     0.26
  4   0.0271  -1162.39    -0.05     -81.99    -0.27
  5   0.1612  -6331.09     0.06    -369.46    -0.01
  6   0.1614  -6337.33    -0.05    -369.79    -0.08
  7   0.1639  -6404.12     0.16    -373.06    -0.10
  8   0.1639  -6406.45    -0.17    -372.86     0.19

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.

03QC112    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