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: 05TH173 # Created Thu May 24 01:37:32 2012 # Orbit generated by ELGB # -->Covariance matrix from a Bernstein fit # Fitting 4 observations of 5 # Arc: 16.97d # First observation: 2005/10/08 # Last observation: 2005/10/25 # Chi-squared of fit: 1.09 DOF: 2 RMS: 0.09 # Min/Max residuals: -0.08 0.20 # Exact a, adot, b, bdot, g, gdot: 2.419634E-05 1.092183E-01 -7.554122E-06 -2.991658E-02 6.933485E-02 -1.398741E-04 # Covariance matrix: 1.8253E-11 4.8801E-08 -4.7755E-14 -9.4433E-11 7.8680E-09 0.0000E+00 4.8801E-08 1.3409E-04 -1.3119E-10 -2.5942E-07 2.1614E-05 0.0000E+00 -4.7755E-14 -1.3119E-10 4.8445E-13 -1.0149E-11 -2.1146E-11 0.0000E+00 -9.4433E-11 -2.5942E-07 -1.0149E-11 1.0712E-09 -4.1816E-08 0.0000E+00 7.8680E-09 2.1614E-05 -2.1146E-11 -4.1816E-08 3.4840E-06 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 1.1047E-03 # lat0 lon0 xBary yBary zBary JD0 -0.669299 16.020669 0.018646 -0.011580 -1.003298 2453651.688943 # Heliocentric elements and errors Epoch: 2453652.5000 = 2005/10/09 Mean Anomaly: 356.39672 +/- 351.289 Argument of Peri: 186.27886 +/- 58.134 Long of Asc Node: 193.66894 +/- 0.255 Inclination: 15.35474 +/- 5.939 Eccentricity: 0.03906887 +/- 0.4914 Semi-Major Axis: 16.04729167 +/- 13.8445 Time of Perihelion: 2453887.5155 +/- 37813.5 Perihelion: 15.42034212 +/- 15.4650 Aphelion: 16.67424122 +/- 16.4049 Period (y) 64.2852 +/- 83.19 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 14.82703146 +/- 0.9357 Ecliptic Y 4.23784616 +/- 0.2685 Ecliptic Z -0.16860814 +/- 0.0114 Ecliptic XDOT -0.00120674 +/- 0.0020 Ecliptic YDOT 0.00413337 +/- 0.0010 Ecliptic ZDOT -0.00118117 +/- 0.0001 # Distances at JD0 (AU) Heliocenter to KBO 15.42169445 +/- 0.9025 Geocenter to KBO 14.42279613 +/- 0.9735 # Hcoef: 11.07
The following table shows the complete astrometric record for 05TH173. 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 (05TH173) followed by the observatory code and reference code for the source of the astrometry.
2005 10 08.18820 01 00 04.20 +05 41 05.2 22.5R 05TH173 304 Co7771 2005 10 08.22696 01 00 03.76 +05 41 01.5 22.4R 05TH173 304 Co7771 2005 10 08.26516 01 00 03.33 +05 40 58.3 22.4R 05TH173 304 Co7771 2005 10 25.15692 00 57 01.27 +05 17 04.2 05TH173 304 Co7771 2005 10 25.20921 00 57 00.71 +05 17 00.1 05TH173 304 Co7771
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 ( -0.44) 0.00 ( -3.41) 2 0.0001 0.00 0.12 0.00 -0.08 3 0.0002 0.00 0.09 0.00 0.03 4 0.0465 0.00 0.20 0.00 -0.02 5 0.0466 0.00 0.07 0.00 0.15
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.
05TH173 quality flag:3 Type: CENTAURR CENTAURR CENTAURR axisobj 16.163 16.163 16.163 ecceobj 0.045 0.045 0.045 incobj 15.305 15.305 15.305 qmin 13.554 12.737 11.583 qmax 20.091 19.881 20.045 amean 16.351 16.161 15.966 amin 15.920 15.962 15.697 amax 17.450 16.742 16.466 emean 0.089 0.098 0.117 emin 0.021 0.041 0.041 emax 0.177 0.212 0.264 imean 15.431 15.330 15.642 imin 14.342 14.497 14.334 imax 17.559 16.563 16.844 excite_mean 0.282 0.284 0.296 fracstop 0.139 0.094 0.168 cjmean 3.256 3.268 3.277 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 181.7 184.3 182.4 kozaiamp 179.6 178.9 180.0