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: 02GH166 # Created Thu May 24 01:37:12 2012 # Orbit generated from Bernstein formalism # Fitting 5 observations of 5 # Arc: 35.04d # First observation: 2002/04/03 # Last observation: 2002/05/08 Preliminary a, adot, b, bdot, g, gdot: 0.000000 0.044303 0.000002 -0.005575 0.032661 0.000000 # WARNING MRQMIN stopped after 13 iterations -- oscilliatory solution # WARNING Fitting with energy constraint # Chi-squared of fit: 5.40 DOF: 5 RMS: 0.18 # Min/Max residuals: -0.41 0.30 # Exact a, adot, b, bdot, g, gdot: 1.720636E-05 3.378610E-02 -8.691965E-07 -5.594374E-03 3.098241E-02 -1.055281E-02 # Covariance matrix: 5.0576E-12 6.1934E-09 -1.0496E-13 9.0750E-12 1.0004E-09 -2.6933E-08 6.1934E-09 1.0486E-05 -2.1997E-10 2.0842E-08 1.6667E-06 -5.5111E-05 -1.0496E-13 -2.1997E-10 6.1968E-13 -7.8166E-12 -3.4483E-11 1.3389E-09 9.0750E-12 2.0842E-08 -7.8166E-12 2.2072E-10 3.2507E-09 -1.3320E-07 1.0004E-09 1.6667E-06 -3.4483E-11 3.2507E-09 2.6521E-07 -8.6518E-06 -2.6933E-08 -5.5111E-05 1.3389E-09 -1.3320E-07 -8.6518E-06 3.3083E-04 # lat0 lon0 xBary yBary zBary JD0 -0.142088 -168.377318 -0.036340 -0.002575 -1.001254 2452367.873603 # Heliocentric elements and errors Epoch: 2452360.5000 = 2002/03/27 Mean Anomaly: 310.01750 +/- 50.537 Argument of Peri: 265.35173 +/- 16.795 Long of Asc Node: 10.84424 +/- 0.080 Inclination: 9.39545 +/- 0.902 Eccentricity: 0.31500142 +/- 0.5704 Semi-Major Axis: 38.05513748 +/- 19.6378 Time of Perihelion: 2464265.6229 +/- 7744.3 Perihelion: 26.06771522 +/- 25.5377 Aphelion: 50.04255973 +/- 33.7355 Period (y) 234.7622 +/- 181.72 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X -32.58701037 +/- 0.5255 Ecliptic Y -6.73490343 +/- 0.1080 Ecliptic Z -0.08004039 +/- 0.0013 Ecliptic XDOT 0.00150773 +/- 0.0016 Ecliptic YDOT -0.00273759 +/- 0.0001 Ecliptic ZDOT -0.00049183 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 33.27579564 +/- 0.5151 Geocenter to KBO 32.27637756 +/- 0.5365 # Hcoef: 6.46
The following table shows the complete astrometric record for 02GH166. 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 (02GH166) followed by the observatory code and reference code for the source of the astrometry.
2002 04 03.37286 12 42 31.42 -04 43 38.3 21.5R 02GH166 644 Cl2691 2002 04 09.04270 12 41 59.38 -04 40 33.0 20.7R 02GH166 807 Cf7585 2002 04 09.14504 12 41 58.81 -04 40 29.9 02GH166 807 Cf7585 2002 05 08.34585 12 39 29.86 -04 26 19.4 21.7R 02GH166 568 Cf7585 2002 05 08.41063 12 39 29.57 -04 26 17.8 02GH166 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 -0.41 2 0.0155 -513.30 -0.14 -16.76 0.30 3 0.0158 -522.36 0.13 -17.24 0.19 4 0.0958 -2904.93 0.03 -106.65 -0.04 5 0.0959 -2909.54 -0.03 -106.88 -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.
02GH166 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