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: 02XD91
# Created Fri May 2 02:36:51 2008
# Orbit generated from Bernstein formalism
# Fitting 3 observations of 3
# Arc: 23.73h
# First observation: 2002/12/04
# Last observation: 2002/12/05
# WARNING Fitting with energy constraint
# WARNING and with gdot fixed = 0
# Chi-squared of fit: 1.71 DOF: 2 RMS: 0.13
# Min/Max residuals: -0.21 0.24
# Exact a, adot, b, bdot, g, gdot:
1.666246E-05 3.109271E-02 -1.053292E-06 -3.855697E-03 2.917954E-02 0.000000E+00
# Covariance matrix:
4.2471E-11 7.6464E-08 -2.0301E-13 -3.3737E-10 1.2275E-08 0.0000E+00
7.6464E-08 1.4038E-04 -3.7128E-10 -6.1630E-07 2.2439E-05 0.0000E+00
-2.0301E-13 -3.7128E-10 5.6004E-13 -1.5028E-10 -5.9472E-11 0.0000E+00
-3.3737E-10 -6.1630E-07 -1.5028E-10 3.3518E-07 -9.8781E-08 0.0000E+00
1.2275E-08 2.2439E-05 -5.9472E-11 -9.8781E-08 3.5953E-06 0.0000E+00
0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 3.2693E-04
# lat0 lon0 xBary yBary zBary JD0
1.477846 83.479741 0.198392 0.024779 -0.960817 2452612.847213
# Heliocentric elements and errors
Epoch: 2452610.5000 = 2002/12/02
Mean Anomaly: 348.73015 +/- 201.235
Argument of Peri: 180.49352 +/- 268.994
Long of Asc Node: 274.64398 +/- 4.399
Inclination: 7.18311 +/- 2.709
Eccentricity: 0.03449540 +/- 0.5759
Semi-Major Axis: 36.46873251 +/- 19.4256
Time of Perihelion: 2455128.7286 +/- 205838.4
Perihelion: 35.21072887 +/- 28.1579
Aphelion: 37.72673614 +/- 29.0677
Period (y) 220.2365 +/- 175.97
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X 4.19480587 +/- 0.2530
Ecliptic Y 34.97493853 +/- 2.2118
Ecliptic Z 0.88381543 +/- 0.0574
Ecliptic XDOT -0.00290473 +/- 0.0009
Ecliptic YDOT 0.00033681 +/- 0.0017
Ecliptic ZDOT -0.00036144 +/- 0.0001
# Distances at JD0 (AU)
Heliocenter to KBO 35.23668331 +/- 2.1956
Geocenter to KBO 34.27058462 +/- 2.2269
# Hcoef: 7.61
The following table shows the complete astrometric record for 02XD91. 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 (02XD91) followed by the observatory code and reference code for the source of the astrometry.
2002 12 04.34647 05 31 16.57 +24 45 17.1 22.7R 02XD91 695 Ch0143 2002 12 04.45220 05 31 15.89 +24 45 16.9 02XD91 695 Ch0143 2002 12 05.33507 05 31 10.36 +24 45 11.4 02XD91 695 Ch0143
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 0.04 0.00 -0.21 2 0.0003 -9.26 -0.04 0.26 0.24 3 0.0027 -84.77 0.00 -1.48 -0.03
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.
02XD91 quality flag:2 Type: CENTAURR CENTAURR REMOVED axisobj 40.165 40.165 40.165 ecceobj 0.232 0.232 0.232 incobj 6.974 6.974 6.974 qmin 29.419 29.300 30.436 qmax 55.262 51.243 50.652 amean 39.527 38.612 39.505 amin 37.211 35.865 38.763 amax 43.155 41.198 40.785 emean 0.221 0.208 0.219 emin 0.188 0.151 0.204 emax 0.281 0.246 0.244 imean 9.188 8.800 8.828 imin 7.066 5.969 8.522 imax 10.337 10.914 9.249 fracstop 0.109 0.108 0.032 cjmean 2.970 2.970 2.972 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 201.7 181.2 150.7 kozaiamp 179.8 179.6 54.7