Orbit Fit and Astrometric record for 03QO112

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: 03QO112   
# Created Tue Dec 12 02:37:20 2017
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting    9 observations of    9
# Arc:  53.88d
# First observation: 2003/08/29
#  Last observation: 2003/10/22
# Chi-squared of fit:    38.95 DOF:   12 RMS:  0.37
# Min/Max residuals:    -0.53    0.69
# Exact a, adot, b, bdot, g, gdot:
  2.140706E-05  6.190012E-02  3.643923E-06  7.601457E-03  4.559898E-02  3.143812E-02
# Covariance matrix:
  4.0412E-13  4.5824E-10  3.8635E-14 -7.2704E-12  6.4992E-11 -5.2972E-09
  4.5824E-10  2.2088E-06  1.9075E-10 -3.5793E-08  3.0776E-07 -2.6266E-05
  3.8635E-14  1.9075E-10  2.9778E-13 -5.4070E-12  2.6544E-11 -2.2760E-09
 -7.2704E-12 -3.5793E-08 -5.4070E-12  6.2813E-10 -4.9814E-09  4.2695E-07
  6.4992E-11  3.0776E-07  2.6544E-11 -4.9814E-09  4.2907E-08 -3.6543E-06
 -5.2972E-09 -2.6266E-05 -2.2760E-09  4.2695E-07 -3.6543E-06  3.1356E-04
#      lat0       lon0       xBary       yBary       zBary        JD0
   -0.399592  -28.995929   -0.079391   -0.007033   -1.010960  2452880.906283
# Heliocentric elements and errors
Epoch:              2452880.5000  =  2003/08/29
Mean Anomaly:           25.51117 +/-    37.975
Argument of Peri:      275.02612 +/-     0.572
Long of Asc Node:      334.30428 +/-     0.084
Inclination:             7.03292 +/-     0.249
Eccentricity:         0.55473419 +/-    0.2617
Semi-Major Axis:     35.73765643 +/-    2.8337
Time of Perihelion: 2447350.6241 +/-    8257.8
Perihelion:          15.91275670 +/-    9.4388
Aphelion:            55.56255615 +/-   10.3397
Period (y)              213.6472 +/-     25.41
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           20.10110683 +/-    0.0912
Ecliptic Y          -11.04703223 +/-    0.0506
Ecliptic Z           -0.15284181 +/-    0.0007
Ecliptic XDOT         0.00345015 +/-    0.0009
Ecliptic YDOT         0.00232846 +/-    0.0006
Ecliptic ZDOT         0.00044340 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   22.93695288 +/-    0.0836
Geocenter to KBO     21.93011387 +/-    0.1043
# Hcoef: 11.93

The following table shows the complete astrometric record for 03QO112. 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 (03QO112) followed by the observatory code and reference code for the source of the astrometry.

2003 08  29.40554  22 12 46.08   -11 29 27.9   24.9R 03QO112   568  Ci9432      
2003 08  29.42797  22 12 45.91   -11 29 28.7   25.3R 03QO112   568  Ci9432      
2003 08  29.44919  22 12 45.74   -11 29 29.5         03QO112   568  Ci9432      
2003 08  30.45645  22 12 37.59   -11 30 10.0         03QO112   568  Ci9432      
2003 08  30.47869  22 12 37.46   -11 30 10.8   25.1R 03QO112   568  Ci9432      
2003 09  28.24557  22 09 07.29   -11 47 14.3         03QO112   568  Ci9432      
2003 09  28.26954  22 09 07.13   -11 47 15.0         03QO112   568  Ci9432      
2003 10  22.23855  22 07 14.54   -11 55 31.0         03QO112   568  Ci9432      
2003 10  22.28284  22 07 14.40   -11 55 31.6         03QO112   568  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    -0.13       0.00    -0.47
  2   0.0001      0.00     0.39       0.00    -0.06
  3   0.0001      0.00     0.44       0.00    -0.01
  4   0.0029      0.00    -0.53       0.00    -0.14
  5   0.0029      0.00     0.25       0.00    -0.05
  6   0.0817      0.00    -0.12       0.00     0.69
  7   0.0818      0.00    -0.24       0.00     0.69
  8   0.1474      0.00     0.19       0.00    -0.31
  9   0.1475      0.00     0.20       0.00    -0.40

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.

03QO112    quality flag:3

Type:       CENTAURR  CENTAURR  CENTAURR

axisobj        36.188    36.188    36.187
ecceobj         0.559     0.559     0.558
incobj          6.976     6.976     6.976
qmin           15.683    15.669    15.781
qmax           56.399    56.400    56.398
amean          35.547    35.409    35.753
amin           34.985    34.679    35.377
amax           36.188    36.188    36.187
emean           0.553     0.551     0.554
emin            0.547     0.540     0.550
emax            0.559     0.559     0.558
imean           8.287     8.283     8.284
imin            8.104     8.139     8.139
imax            8.465     8.443     8.478
excite_mean     0.571     0.569     0.573
fracstop        0.002     0.003     0.001
cjmean          2.637     2.639     2.635

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       281.3     282.6     277.6
kozaiamp          6.7       7.8       2.6