The following information shows the result of the orbit fit based on Gary Bernstein's method. Most of the information should be self-explanatory.
# Object: 04PA108 # Created Fri May 2 02:36:55 2008 # Orbit generated from Bernstein formalism # Fitting 8 observations of 8 # Arc: 2.18y # First observation: 2004/08/14 # Last observation: 2006/10/20 Preliminary a, adot, b, bdot, g, gdot: -0.000001 0.024024 0.000000 -0.000434 0.024361 0.000000 # Chi-squared of fit: 4.58 DOF: 10 RMS: 0.13 # Min/Max residuals: -0.36 0.27 # Exact a, adot, b, bdot, g, gdot: 1.414431E-05 2.375025E-02 -1.792970E-07 -4.262274E-04 2.427323E-02 -1.069939E-02 # Covariance matrix: 5.1181E-13 9.8101E-12 9.5119E-15 -2.9245E-13 3.1518E-12 3.1750E-10 9.8101E-12 9.3767E-09 9.1343E-12 -2.8667E-10 2.0589E-09 3.1246E-07 9.5119E-15 9.1343E-12 3.1125E-13 -4.2124E-13 2.0049E-12 3.0440E-10 -2.9245E-13 -2.8667E-10 -4.2124E-13 8.9307E-12 -6.2890E-11 -9.5537E-09 3.1518E-12 2.0589E-09 2.0049E-12 -6.2890E-11 4.5680E-10 6.8542E-08 3.1750E-10 3.1246E-07 3.0440E-10 -9.5537E-09 6.8542E-08 1.0413E-05 # lat0 lon0 xBary yBary zBary JD0 -0.514619 -17.293088 0.361912 -0.008430 -0.950377 2453231.798423 # Heliocentric elements and errors Epoch: 2453230.5000 = 2004/08/13 Mean Anomaly: 322.16444 +/- 9.665 Argument of Peri: 294.89743 +/- 1.381 Long of Asc Node: 136.22314 +/- 0.077 Inclination: 1.14779 +/- 0.003 Eccentricity: 0.46614152 +/- 0.1365 Semi-Major Axis: 54.32685866 +/- 8.4484 Time of Perihelion: 2468602.0613 +/- 1600.4 Perihelion: 29.00285405 +/- 8.6799 Aphelion: 79.65086328 +/- 14.4369 Period (y) 400.4332 +/- 93.41 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 40.12972285 +/- 0.0346 Ecliptic Y -12.87212671 +/- 0.0108 Ecliptic Z -0.37004724 +/- 0.0003 Ecliptic XDOT -0.00035824 +/- 0.0004 Ecliptic YDOT 0.00290962 +/- 0.0001 Ecliptic ZDOT -0.00003713 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 42.14526351 +/- 0.0331 Geocenter to KBO 41.19765092 +/- 0.0363 # Hcoef: 6.27
The following table shows the complete astrometric record for 04PA108. 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 (04PA108) followed by the observatory code and reference code for the source of the astrometry.
2004 08 14.29768 22 57 01.64 -07 15 58.2 21.5R 04PA108 807 Cl2777 2004 08 14.40415 22 57 01.18 -07 16 00.9 04PA108 807 Cl2777 2004 08 15.34845 22 56 57.26 -07 16 25.7 04PA108 807 Cl2777 2004 09 13.23951 22 54 50.32 -07 29 36.7 22.6R 04PA108 304 Cl4404 2004 09 13.28756 22 54 50.10 -07 29 38.0 04PA108 304 Cl4404 2006 10 19.17414 23 02 50.72 -06 43 15.5 22.3R 04PA108 695 Ct0488 2006 10 19.26624 23 02 50.42 -06 43 17.0 04PA108 695 Ct0488 2006 10 20.16577 23 02 47.58 -06 43 34.6 04PA108 695 Ct0488
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 0.27 0.00 -0.02 2 0.0003 -7.36 0.08 0.13 0.11 3 0.0029 -70.73 -0.36 -0.45 0.03 4 0.0820 -2118.08 0.03 -9.49 -0.08 5 0.0821 -2121.60 -0.02 -9.45 -0.05 6 2.1790 5553.72 -0.04 -185.46 -0.11 7 2.1792 5549.02 0.09 -185.12 0.15 8 2.1817 5503.16 -0.04 -185.04 -0.04
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.
04PA108 quality flag:3 Type: CENTAURR CENTAURR CENTAURR axisobj 55.185 55.184 55.185 ecceobj 0.471 0.471 0.471 incobj 1.145 1.145 1.145 qmin 29.085 29.085 29.085 qmax 81.185 81.183 81.185 amean 54.742 54.742 54.743 amin 54.492 54.491 54.493 amax 55.185 55.184 55.185 emean 0.467 0.467 0.467 emin 0.464 0.464 0.464 emax 0.471 0.471 0.471 imean 0.792 0.792 0.792 imin 0.792 0.792 0.792 imax 0.792 0.792 0.792 fracstop 0.000 0.000 0.000 cjmean 2.935 2.935 2.935 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 294.2 294.2 294.2 kozaiamp 0.5 0.5 0.5