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: 05GW186 # Created Fri Nov 22 02:08:46 2024 # Orbit generated from Bernstein formalism # Fitting 5 observations of 5 # Arc: 3.02d # First observation: 2005/04/10 # Last observation: 2005/04/13 # WARNING Fitting with energy constraint # WARNING and with gdot fixed = 0 # WARNING MRQMIN stopped after 13 iterations -- oscilliatory solution # Chi-squared of fit: 4.20 DOF: 6 RMS: 0.16 # Min/Max residuals: -0.28 0.20 # Exact a, adot, b, bdot, g, gdot: 1.434225E-05 2.466895E-02 1.253349E-06 1.668504E-03 2.596477E-02 0.000000E+00 # Covariance matrix: 6.5566E-11 1.0213E-07 -7.5993E-13 -1.4290E-09 2.8262E-08 0.0000E+00 1.0213E-07 1.6064E-04 -1.1941E-09 -2.2454E-06 4.4408E-05 0.0000E+00 -7.5993E-13 -1.1941E-09 5.2447E-13 -6.4165E-11 -3.3016E-10 0.0000E+00 -1.4290E-09 -2.2454E-06 -6.4165E-11 6.0909E-08 -6.2087E-07 0.0000E+00 2.8262E-08 4.4408E-05 -3.3016E-10 -6.2087E-07 1.2279E-05 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 2.3034E-04 # lat0 lon0 xBary yBary zBary JD0 -0.562002 146.095948 -0.810125 -0.005620 -0.582393 2453470.667543 # Heliocentric elements and errors Epoch: 2453470.5000 = 2005/04/10 Mean Anomaly: 167.88981 +/- 330.425 Argument of Peri: 181.84005 +/- 316.127 Long of Asc Node: 155.40568 +/- 5.149 Inclination: 3.91278 +/- 2.391 Eccentricity: 0.09958704 +/- 0.5587 Semi-Major Axis: 35.62548442 +/- 13.3502 Time of Perihelion: 2494916.9647 +/- 68317.5 Perihelion: 32.07764772 +/- 23.2526 Aphelion: 39.17332113 +/- 24.7321 Period (y) 212.6422 +/- 119.53 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X -32.90370038 +/- 4.3136 Ecliptic Y 21.13368957 +/- 2.8993 Ecliptic Z -0.37770171 +/- 0.0510 Ecliptic XDOT -0.00145202 +/- 0.0014 Ecliptic YDOT -0.00216508 +/- 0.0012 Ecliptic ZDOT 0.00017598 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 39.10791470 +/- 3.9530 Geocenter to KBO 38.51371724 +/- 5.1977 # Hcoef: 6.54
The following table shows the complete astrometric record for 05GW186. 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 (05GW186) followed by the observatory code and reference code for the source of the astrometry.
2005 04 10.16680 09 52 35.18 +12 17 26.5 22.2R 05GW186 695 Cn3379 2005 04 10.25972 09 52 34.91 +12 17 28.3 05GW186 695 Cn3379 2005 04 11.17236 09 52 32.61 +12 17 41.6 05GW186 695 Cn3379 2005 04 12.17254 09 52 30.14 +12 17 56.7 05GW186 695 Cn3379 2005 04 13.18328 09 52 27.72 +12 18 11.2 05GW186 695 Cn3379
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 0.14 0.00 -0.05
2 0.0003 -4.33 -0.28 0.36 0.20
3 0.0028 -40.55 0.20 1.49 -0.24
4 0.0055 -79.73 0.08 3.47 0.06
5 0.0083 -118.01 -0.10 5.14 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.
05GW186 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