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: 05JA186 # Created Wed Nov 27 02:08:45 2024 # Orbit generated from Bernstein formalism # Fitting 7 observations of 7 # Arc: 17.99d # First observation: 2005/05/14 # Last observation: 2005/06/01 Preliminary a, adot, b, bdot, g, gdot: 0.000001 0.018783 -0.000000 -0.001549 0.022641 0.000000 # WARNING MRQMIN stopped after 13 iterations -- oscilliatory solution # WARNING Fitting with energy constraint # Chi-squared of fit: 14.31 DOF: 9 RMS: 0.25 # Min/Max residuals: -0.53 0.53 # Exact a, adot, b, bdot, g, gdot: 1.174584E-05 1.509436E-02 -1.284771E-06 -1.523749E-03 2.204466E-02 -1.380374E-02 # Covariance matrix: 1.4657E-11 1.7846E-08 1.0026E-13 -1.3012E-10 2.9886E-09 5.4810E-09 1.7846E-08 2.2168E-05 1.2441E-10 -1.6150E-07 3.7100E-06 5.8588E-06 1.0026E-13 1.2441E-10 2.6923E-13 -7.6325E-12 2.0826E-11 3.7545E-11 -1.3012E-10 -1.6150E-07 -7.6325E-12 1.9487E-09 -2.7033E-08 -4.6702E-08 2.9886E-09 3.7100E-06 2.0826E-11 -2.7033E-08 6.2098E-07 1.0342E-06 5.4810E-09 5.8588E-06 3.7545E-11 -4.6702E-08 1.0342E-06 5.6744E-05 # lat0 lon0 xBary yBary zBary JD0 -1.657760 -132.236278 -0.105465 -0.028910 -1.001763 2453504.874123 # Heliocentric elements and errors Epoch: 2453500.5000 = 2005/05/10 Mean Anomaly: 309.81699 +/- 42.078 Argument of Peri: 326.83784 +/- 23.182 Long of Asc Node: 32.04760 +/- 4.322 Inclination: 5.92092 +/- 1.569 Eccentricity: 0.66947244 +/- 0.2524 Semi-Major Axis: 47.18650900 +/- 24.4812 Time of Perihelion: 2470004.1282 +/- 5151.7 Perihelion: 15.59644190 +/- 14.3995 Aphelion: 78.77657610 +/- 42.5709 Period (y) 324.1418 +/- 252.26 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X -31.07887768 +/- 1.0897 Ecliptic Y -34.38526526 +/- 1.2000 Ecliptic Z -1.31233524 +/- 0.0469 Ecliptic XDOT 0.00254423 +/- 0.0007 Ecliptic YDOT 0.00000562 +/- 0.0009 Ecliptic ZDOT -0.00013952 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 46.36771861 +/- 1.1512 Geocenter to KBO 45.36246963 +/- 1.6216 # Hcoef: 6.90
The following table shows the complete astrometric record for 05JA186. 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 (05JA186) followed by the observatory code and reference code for the source of the astrometry.
2005 05 14.37338 14 59 14.67 -18 43 07.9 23.5r 05JA186 568 C~0D3W 2005 05 14.40709 14 59 14.51 -18 43 07.4 23.5r 05JA186 568 C~0D3W 2005 05 14.44596 14 59 14.33 -18 43 06.8 23.5r 05JA186 568 C~0D3W 2005 05 15.463184 14 59 09.66 -18 42 47.7 05JA186 T14 C~63QJ 2005 05 16.359309 14 59 05.52 -18 42 30.8 05JA186 T14 C~63QJ 2005 05 17.34300 14 59 00.92 -18 42 12.2 23.2r 05JA186 568 C~0D3W 2005 06 01.362884 14 57 54.33 -18 37 37.0 05JA186 T14 C~63QJ
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 -0.19 0.00 0.04
2 0.0001 -2.32 -0.16 -0.16 -0.09
3 0.0002 -4.94 -0.08 -0.31 -0.20
4 0.0030 -73.98 0.53 -0.72 0.05
5 0.0054 -135.18 0.42 -1.12 0.15
6 0.0081 -203.13 -0.53 -1.75 0.08
7 0.0493 -1188.65 0.01 -5.98 -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.
05JA186 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