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: 131697
# Created Wed May 22 01:36:40 2013
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting 19 observations of 19
# Arc: 4.13y
# First observation: 2001/12/11
# Last observation: 2006/01/29
# Chi-squared of fit: 18.00 DOF: 32 RMS: 0.17
# Min/Max residuals: -0.31 0.55
# Exact a, adot, b, bdot, g, gdot:
1.676383E-05 3.262657E-02 -2.299766E-08 -1.318114E-03 3.005730E-02 -1.887726E-03
# Covariance matrix:
0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00
0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00
0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00
0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00
0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00
0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00
# lat0 lon0 xBary yBary zBary JD0
1.744763 107.397087 0.459128 0.026246 -0.864158 2452254.897773
# Heliocentric elements and errors
Epoch: 2452254.5000 = 2001/12/11
Mean Anomaly: 296.92495 +/- 0.000
Argument of Peri: 214.52175 +/- 0.000
Long of Asc Node: 323.24167 +/- 0.000
Inclination: 2.84869 +/- 0.000
Eccentricity: 0.07614894 +/- 0.0000
Semi-Major Axis: 35.18482044 +/- 0.0000
Time of Perihelion: 2465610.8113 +/- 0.0
Perihelion: 32.50553382 +/- 0.0000
Aphelion: 37.86410706 +/- 0.0000
Period (y) 208.7090 +/- 0.00
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X -9.76198615 +/- 0.0000
Ecliptic Y 32.70087449 +/- 0.0000
Ecliptic Z 1.01296037 +/- 0.0000
Ecliptic XDOT -0.00279423 +/- 0.0000
Ecliptic YDOT -0.00104914 +/- 0.0000
Ecliptic ZDOT -0.00012503 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 34.14194480 +/- 0.0000
Geocenter to KBO 33.26985075 +/- 0.0000
# Hcoef: 8.38
The following table shows the complete astrometric record for 131697. 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 (131697) followed by the observatory code and reference code for the source of the astrometry.
2001 12 11.39703 07 16 24.21 +24 02 16.2 131697 568 Ce7056 2001 12 11.42052 07 16 24.07 +24 02 16.6 131697 568 Ce7056 2001 12 11.44368 07 16 23.95 +24 02 16.9 131697 568 Ce7056 2002 01 09.51211 07 13 22.22 +24 07 36.8 131697 568 Ce7056 2002 01 09.53762 07 13 22.01 +24 07 37.0 23.5R 131697 568 Ce7056 2003 12 24.46344 07 31 22.81 +23 23 23.4 23.1g 131697 568 Cq9107 2003 12 24.48664 07 31 22.68 +23 23 23.7 23.3g 131697 568 Cq9107 2003 12 24.50988 07 31 22.52 +23 23 24.1 23.6g 131697 568 Cq9107 2003 12 25.50403 07 31 16.47 +23 23 37.5 24.0g 131697 568 Cq9107 2004 04 15.19439 07 24 13.91 +23 33 49.8 131697 675 Cq9107 2004 04 15.23969 07 24 14.00 +23 33 49.3 131697 675 Cq9107 2005 01 08.35280 07 37 50.14 +23 04 04.1 23.5r 131697 568 Cq9107 2005 01 08.39064 07 37 49.89 +23 04 04.6 23.6r 131697 568 Cq9107 2005 01 08.42845 07 37 49.64 +23 04 05.2 23.4r 131697 568 Cq9107 2005 01 15.37575 07 37 04.49 +23 05 43.4 23.9r 131697 568 Cq9107 2006 01 29.32339 07 43 42.64 +22 44 45.3 131697 675 Cq9107 2006 01 29.32971 07 43 42.61 +22 44 45.2 131697 675 Cq9107 2006 01 29.42638 07 43 42.00 +22 44 46.6 131697 675 Cq9107 2006 01 29.43285 07 43 41.98 +22 44 46.6 131697 675 Cq9107
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 -0.26 0.00 0.55 2 0.0001 0.00 0.04 0.00 -0.02 3 0.0001 0.00 0.22 0.00 0.02 4 0.0797 0.00 0.30 0.00 0.15 5 0.0798 0.00 -0.31 0.00 0.09 6 2.0344 0.00 -0.19 0.00 -0.10 7 2.0345 0.00 0.02 0.00 -0.10 8 2.0345 0.00 -0.22 0.00 -0.01 9 2.0373 0.00 0.16 0.00 0.16 10 2.3430 0.00 -0.04 0.00 0.03 11 2.3432 0.00 0.02 0.00 -0.11 12 3.0772 0.00 0.23 0.00 -0.03 13 3.0773 0.00 0.22 0.00 -0.09 14 3.0774 0.00 0.20 0.00 -0.04 15 3.0965 0.00 0.10 0.00 -0.13 16 4.1340 0.00 -0.15 0.00 0.15 17 4.1340 0.00 0.00 0.00 -0.03 18 4.1342 0.00 -0.01 0.00 0.08 19 4.1343 0.00 0.30 0.00 -0.01
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.
131697 quality flag:3 Type: 5:4E 5:4E 5:4E axisobj 35.049 35.049 35.049 ecceobj 0.073 0.073 0.073 incobj 2.856 2.856 2.856 qmin 31.429 31.418 31.436 qmax 38.736 38.706 38.766 amean 34.945 34.945 34.945 amin 34.614 34.617 34.612 amax 35.287 35.283 35.289 emean 0.079 0.079 0.079 emin 0.059 0.059 0.059 emax 0.099 0.099 0.099 imean 4.857 4.857 4.857 imin 3.411 3.412 3.411 imax 6.049 6.049 6.049 excite_mean 0.116 0.116 0.116 fracstop 1.000 1.000 1.000 cjmean 3.002 3.002 3.002 libcent 0 179.3 179.3 179.0 libamp 0 73.6 73.7 73.4 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 180.1 179.6 179.8 kozaiamp 179.9 180.0 180.0