Orbit Fit and Astrometric record for 03QP112

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: 03QP112   
# Created Tue Dec 12 02:37:20 2017
# Orbit generated from Bernstein formalism
# Fitting   14 observations of   14
# Arc:  53.90d
# First observation: 2003/08/29
#  Last observation: 2003/10/22
Preliminary a, adot, b, bdot, g, gdot:
  -0.000000   0.078277   0.000010   0.033027   0.053725   0.000000
# Chi-squared of fit:    12.46 DOF:   22 RMS:  0.17
# Min/Max residuals:    -0.40    0.39
# Exact a, adot, b, bdot, g, gdot:
  1.776683E-05  5.594503E-02  1.008404E-05  3.380982E-02  5.015454E-02 -2.319527E-02
# Covariance matrix:
  3.1593E-13  3.6611E-11  1.2386E-14 -1.3509E-12  6.1799E-12 -2.5451E-10
  3.6611E-11  1.5697E-07  7.5562E-11 -8.0307E-09  2.2110E-08 -1.5477E-06
  1.2386E-14  7.5562E-11  3.0299E-13 -6.0673E-12  1.0534E-11 -7.6470E-10
 -1.3509E-12 -8.0307E-09 -6.0673E-12  4.4855E-10 -1.1201E-09  8.1164E-08
  6.1799E-12  2.2110E-08  1.0534E-11 -1.1201E-09  3.1278E-09 -2.1577E-07
 -2.5451E-10 -1.5477E-06 -7.6470E-10  8.1164E-08 -2.1577E-07  1.5660E-05
#      lat0       lon0       xBary       yBary       zBary        JD0
   -0.503244  -28.904508   -0.077778   -0.008863   -1.011071  2452880.906283
# Heliocentric elements and errors
Epoch:              2452880.5000  =  2003/08/29
Mean Anomaly:          291.06419 +/-     7.233
Argument of Peri:      106.54380 +/-     3.917
Long of Asc Node:      332.10462 +/-     0.006
Inclination:            31.18385 +/-     0.201
Eccentricity:         0.33226472 +/-    0.0507
Semi-Major Axis:     21.19645272 +/-    0.9314
Time of Perihelion: 2459706.0175 +/-     557.2
Perihelion:          14.15361936 +/-    1.2409
Aphelion:            28.23928608 +/-    1.6410
Period (y)               97.5895 +/-      6.43
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           18.37398695 +/-    0.0195
Ecliptic Y          -10.05359469 +/-    0.0107
Ecliptic Z           -0.17489727 +/-    0.0002
Ecliptic XDOT         0.00037669 +/-    0.0002
Ecliptic YDOT         0.00327191 +/-    0.0001
Ecliptic ZDOT         0.00185684 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   20.94537542 +/-    0.0178
Geocenter to KBO     19.93837540 +/-    0.0222
# Hcoef: 12.71

The following table shows the complete astrometric record for 03QP112. 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 (03QP112) followed by the observatory code and reference code for the source of the astrometry.

2003 08  29.40554  22 13 16.03   -11 33 19.8   25.5R 03QP112   568  Ci9432      
2003 08  29.42797  22 13 15.81   -11 33 20.6   25.3R 03QP112   568  Ci9432      
2003 08  29.44919  22 13 15.60   -11 33 21.4   25.3R 03QP112   568  Ci9432      
2003 08  30.45645  22 13 05.93   -11 33 54.9         03QP112   568  Ci9432      
2003 08  30.47869  22 13 05.71   -11 33 55.4   25.8R 03QP112   568  Ci9432      
2003 09  28.23562  22 08 51.15   -11 47 29.6         03QP112   568  Ci9432      
2003 09  28.26307  22 08 50.93   -11 47 29.9         03QP112   568  Ci9432      
2003 09  29.24499  22 08 43.48   -11 47 50.7         03QP112   568  Ci9432      
2003 09  29.28735  22 08 43.16   -11 47 51.8         03QP112   568  Ci9432      
2003 10  22.21349  22 06 27.41   -11 52 20.9         03QP112   568  Ci9432      
2003 10  22.22040  22 06 27.40   -11 52 20.9         03QP112   568  Ci9432      
2003 10  22.25769  22 06 27.19   -11 52 20.7         03QP112   568  Ci9432      
2003 10  22.26460  22 06 27.21   -11 52 21.0         03QP112   568  Ci9432      
2003 10  22.30114  22 06 27.05   -11 52 21.1         03QP112   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    -0.03       0.00     0.12
  2   0.0001     -3.31    -0.05       0.40     0.07
  3   0.0001     -6.48    -0.11       0.75    -0.01
  4   0.0029   -151.21     0.07      19.94    -0.22
  5   0.0029   -154.41     0.12      20.62     0.01
  6   0.0817  -3940.61     0.15     581.09    -0.04
  7   0.0817  -3943.74     0.17     581.95     0.27
  8   0.0844  -4053.50    -0.16     600.96     0.05
  9   0.0845  -4058.29    -0.17     601.58    -0.19
 10   0.1473  -6020.26    -0.09    1048.80    -0.04
 11   0.1473  -6020.40     0.18    1048.85    -0.12
 12   0.1474  -6023.22    -0.40    1050.12     0.39
 13   0.1475  -6023.05     0.18    1049.74    -0.13
 14   0.1476  -6025.28     0.14    1050.47    -0.14

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.

03QP112    quality flag:1

Type:       CENTAURR  CENTAURR  CENTAURR

axisobj        21.308    25.229    19.372
ecceobj         0.332     0.485     0.196
incobj         31.051    30.451    31.668
qmin           13.738    12.670    14.978
qmax           29.107    38.717    24.194
amean          21.329    25.476    19.405
amin           21.105    24.904    18.822
amax           21.603    25.894    19.659
emean           0.330     0.489     0.185
emin            0.303     0.467     0.074
emax            0.353     0.503     0.232
imean          31.813    31.092    32.628
imin           31.021    30.653    31.446
imax           32.831    31.976    34.804
excite_mean     0.622     0.711     0.572
fracstop        0.032     0.010     0.040
cjmean          2.764     2.551     2.882

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       187.3     118.5     193.3
kozaiamp         81.5      18.7      74.5