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: 66652 # Created Fri May 2 02:36:18 2008 # Orbit generated by ELGB # -->Covariance matrix from a Bernstein fit # Fitting 31 observations of 31 # Arc: 4.72y # First observation: 1999/09/08 # Last observation: 2004/05/29 # Chi-squared of fit: 78.92 DOF: 56 RMS: 0.28 # Min/Max residuals: -0.70 0.56 # Exact a, adot, b, bdot, g, gdot: 1.710488E-05 2.544526E-02 -5.032963E-07 -1.217742E-04 2.506569E-02 1.260897E-03 # Covariance matrix: 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 # lat0 lon0 xBary yBary zBary JD0 -0.505914 -34.457829 -0.333371 -0.008571 -0.943482 2451429.803363 # Heliocentric elements and errors Epoch: 2451430.5000 = 1999/09/09 Mean Anomaly: 34.06144 +/- 0.000 Argument of Peri: 200.85658 +/- 0.000 Long of Asc Node: 84.71470 +/- 0.000 Inclination: 0.56332 +/- 0.000 Eccentricity: 0.09046763 +/- 0.0000 Semi-Major Axis: 44.01758311 +/- 0.0000 Time of Perihelion: 2441338.0123 +/- 0.0 Perihelion: 40.03541650 +/- 0.0000 Aphelion: 47.99974972 +/- 0.0000 Period (y) 292.0435 +/- 0.00 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 33.86867110 +/- 0.0000 Ecliptic Y -22.82830849 +/- 0.0000 Ecliptic Z -0.35226034 +/- 0.0000 Ecliptic XDOT 0.00168190 +/- 0.0000 Ecliptic YDOT 0.00222212 +/- 0.0000 Ecliptic ZDOT -0.00001445 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 40.84531517 +/- 0.0000 Geocenter to KBO 39.89518444 +/- 0.0000 # Hcoef: 5.82
The following table shows the complete astrometric record for 66652. 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 (66652) followed by the observatory code and reference code for the source of the astrometry.
1999 09 08.30262 21 51 55.60 -13 28 58.3 21.7R 66652 568 Cb6519 1999 09 08.35493 21 51 55.39 -13 28 59.3 21.8R 66652 568 Cb6519 1999 09 08.40789 21 51 55.16 -13 29 00.6 21.8R 66652 568 Cb6519 1999 09 10.33692 21 51 46.69 -13 29 44.1 21.5R 66652 568 Cb6519 1999 09 10.35655 21 51 46.61 -13 29 45.0 21.6R 66652 568 Cb6519 1999 09 13.34384 21 51 33.84 -13 30 50.8 21.5R 66652 568 Cb6519 1999 09 13.35199 21 51 33.80 -13 30 51.0 21.7R 66652 568 Cb6519 1999 09 14.30760 21 51 29.80 -13 31 11.6 21.6R 66652 568 Cb6519 1999 09 14.31468 21 51 29.76 -13 31 11.8 21.6R 66652 568 Cb6519 1999 10 09.26403 21 50 02.79 -13 38 33.8 21.8R 66652 568 Cb6519 1999 10 09.31700 21 50 02.66 -13 38 34.4 21.6R 66652 568 Cb6519 1999 11 10.28887 21 49 22.37 -13 41 41.7 21.7R 66652 568 Cb6519 1999 11 11.32016 21 49 22.65 -13 41 39.3 21.7R 66652 568 Cb6519 2000 07 22.52180 22 01 07.81 -12 40 27.6 66652 568 Cb6519 2000 07 22.58791 22 01 07.53 -12 40 29.1 66652 568 Cb6519 2000 07 23.46547 22 01 03.97 -12 40 48.8 66652 568 Cb6519 2000 07 23.54696 22 01 03.65 -12 40 50.6 66652 568 Cb6519 2000 09 05.03699 21 57 45.40 -12 58 38.1 21.5R 66652 309 Cc7536 2000 09 05.03951 21 57 45.38 -12 58 38.1 66652 309 Cc7536 2000 09 05.04194 21 57 45.37 -12 58 38.4 22.1R 66652 309 Cc7536 2000 09 05.04411 21 57 45.37 -12 58 38.4 20.8R 66652 309 Cc7536 2000 09 05.04621 21 57 45.36 -12 58 38.5 21.5R 66652 309 Cc7536 2001 05 24.48005 22 08 33.05 -11 59 41.3 21.7R 66652 675 Cd1215 2001 05 25.46613 22 08 33.63 -11 59 39.0 21.7R 66652 675 Cd1215 2003 07 07.46434 22 18 34.25 -11 04 57.5 21.8R 66652 568 Ci2608 2003 07 07.59626 22 18 33.86 -11 04 59.6 66652 568 Ci2608 2003 07 08.48476 22 18 31.39 -11 05 14.4 66652 568 Ci2608 2004 05 29.29664 22 24 42.02 -10 29 41.8 21.5R 66652 304 Ck8914 2004 05 29.33911 22 24 42.03 -10 29 41.8 66652 304 Ck8914 2004 05 29.37034 22 24 42.06 -10 29 41.9 66652 304 Ck8914 2004 05 29.40742 22 24 42.08 -10 29 41.9 66652 304 Ck8914
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 0.02 0.00 0.09 2 0.0001 0.00 0.19 0.00 0.23 3 0.0003 0.00 0.31 0.00 0.13 4 0.0056 0.00 -0.21 0.00 0.28 5 0.0056 0.00 -0.10 0.00 -0.18 6 0.0138 0.00 0.23 0.00 0.02 7 0.0138 0.00 0.15 0.00 0.00 8 0.0164 0.00 0.31 0.00 0.07 9 0.0165 0.00 0.17 0.00 0.02 10 0.0848 0.00 -0.17 0.00 -0.42 11 0.0849 0.00 0.06 0.00 -0.33 12 0.1724 0.00 -0.34 0.00 -0.30 13 0.1753 0.00 -0.54 0.00 -0.19 14 0.8712 0.00 0.23 0.00 0.00 15 0.8714 0.00 0.12 0.00 -0.03 16 0.8738 0.00 -0.07 0.00 -0.17 17 0.8740 0.00 0.22 0.00 -0.15 18 0.9931 0.00 0.25 0.00 0.50 19 0.9931 0.00 0.13 0.00 0.56 20 0.9931 0.00 0.14 0.00 0.32 21 0.9931 0.00 0.29 0.00 0.37 22 0.9931 0.00 0.29 0.00 0.32 23 1.7089 0.00 -0.32 0.00 -0.08 24 1.7116 0.00 -0.34 0.00 -0.13 25 3.8280 0.00 -0.07 0.00 -0.70 26 3.8283 0.00 -0.22 0.00 -0.61 27 3.8308 0.00 0.35 0.00 -0.53 28 4.7228 0.00 0.02 0.00 0.50 29 4.7229 0.00 -0.14 0.00 0.41 30 4.7230 0.00 0.08 0.00 0.24 31 4.7231 0.00 0.12 0.00 0.16
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.
66652 quality flag:3 Type: CLASSICAL CLASSICAL CLASSICAL axisobj 43.963 43.963 43.963 ecceobj 0.089 0.089 0.089 incobj 0.563 0.563 0.563 qmin 39.371 39.368 39.385 qmax 48.621 48.580 48.564 amean 43.832 43.832 43.832 amin 43.477 43.483 43.480 amax 44.227 44.229 44.218 emean 0.081 0.081 0.081 emin 0.060 0.060 0.060 emax 0.100 0.099 0.098 imean 1.564 1.564 1.564 imin 0.675 0.676 0.675 imax 2.282 2.283 2.279 fracstop 1.000 1.000 1.000 cjmean 3.091 3.091 3.091 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 187.9 187.8 187.7 kozaiamp 179.9 180.0 180.0