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: 02GJ166
# Created Sun Dec 22 02:08:23 2024
# Orbit generated from Bernstein formalism
# Fitting 4 observations of 4
# Arc: 29.38d
# First observation: 2002/04/09
# Last observation: 2002/05/08
# WARNING Fitting with energy constraint
# WARNING and with gdot fixed = 0
# Chi-squared of fit: 0.66 DOF: 4 RMS: 0.07
# Min/Max residuals: -0.11 0.11
# Exact a, adot, b, bdot, g, gdot:
1.784595E-05 3.638820E-02 1.341335E-06 2.607120E-03 3.236258E-02 0.000000E+00
# Covariance matrix:
5.1153E-11 1.0024E-07 1.0006E-12 2.3246E-09 1.7581E-08 0.0000E+00
1.0024E-07 1.9930E-04 1.9893E-09 4.6214E-06 3.4952E-05 0.0000E+00
1.0006E-12 1.9893E-09 7.4801E-13 3.7047E-11 3.4887E-10 0.0000E+00
2.3246E-09 4.6214E-06 3.7047E-11 1.0739E-07 8.1048E-07 0.0000E+00
1.7581E-08 3.4952E-05 3.4887E-10 8.1048E-07 6.1297E-06 0.0000E+00
0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 4.4602E-04
# lat0 lon0 xBary yBary zBary JD0
3.250102 -169.654635 -0.155782 0.056196 -0.990262 2452373.547143
# Heliocentric elements and errors
Epoch: 2452370.5000 = 2002/04/06
Mean Anomaly: 15.10623 +/- 91.215
Argument of Peri: 21.75339 +/- 160.828
Long of Asc Node: 153.00671 +/- 7.232
Inclination: 5.15150 +/- 0.854
Eccentricity: 0.02739777 +/- 0.5626
Semi-Major Axis: 32.75342037 +/- 16.4304
Time of Perihelion: 2449497.4911 +/- 222739.5
Perihelion: 31.85604961 +/- 24.3914
Aphelion: 33.65079113 +/- 24.9905
Period (y) 187.4533 +/- 141.05
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X -31.29560315 +/- 2.3218
Ecliptic Y -5.86651175 +/- 0.4237
Ecliptic Z 1.75187307 +/- 0.1340
Ecliptic XDOT 0.00055677 +/- 0.0018
Ecliptic YDOT -0.00302751 +/- 0.0010
Ecliptic ZDOT 0.00022042 +/- 0.0001
# Distances at JD0 (AU)
Heliocenter to KBO 31.88886633 +/- 2.2799
Geocenter to KBO 30.89988466 +/- 2.3639
# Hcoef: 7.81
The following table shows the complete astrometric record for 02GJ166. 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 (02GJ166) followed by the observatory code and reference code for the source of the astrometry.
2002 04 09.04640 12 43 07.84 -01 06 21.6 22.5R 02GJ166 807 Cf7585 2002 04 09.14879 12 43 07.25 -01 06 17.8 02GJ166 807 Cf7585 2002 05 08.33589 12 40 36.73 -00 50 47.2 22.5R 02GJ166 568 Cf7585 2002 05 08.42888 12 40 36.30 -00 50 45.0 02GJ166 568 Cf7585
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 -0.01 0.00 -0.01
2 0.0003 -9.63 0.01 0.03 0.01
3 0.0802 -2451.35 0.09 -27.38 0.11
4 0.0804 -2458.15 -0.09 -27.88 -0.11
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.
02GJ166 quality flag:0 Type: ERR2LARGE ERR2LARGE ERR2LARGE axisobj 0.000 0.000 0.000 ecceobj -1.000 -1.000 -1.000 incobj -1.000 -1.000 -1.000 qmin 0.000 0.000 0.000 qmax 0.000 0.000 0.000 amean 0.000 0.000 0.000 amin 0.000 0.000 0.000 amax 0.000 0.000 0.000 emean 0.000 0.000 0.000 emin 0.000 0.000 0.000 emax 0.000 0.000 0.000 imean 0.000 0.000 0.000 imin 0.000 0.000 0.000 imax 0.000 0.000 0.000 excite_mean 0.000 0.000 0.000 fracstop 0.000 0.000 0.000 cjmean 0.000 0.000 0.000 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 0.0 0.0 0.0 kozaiamp 0.0 0.0 0.0