The following information shows the result of the orbit fit based on Gary Bernstein's method. Most of the information should be self-explanatory.
# Object: 118698
# Created Fri May 2 02:36:20 2008
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting 36 observations of 36
# Arc: 5.88y
# First observation: 2000/07/28
# Last observation: 2006/06/13
# Chi-squared of fit: 118.06 DOF: 66 RMS: 0.32
# Min/Max residuals: -0.80 0.66
# Exact a, adot, b, bdot, g, gdot:
1.642813E-05 2.632636E-02 2.790869E-06 5.212062E-03 2.612607E-02 -5.972158E-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
1.007516 -70.397359 -0.269569 0.017036 -0.978943 2451753.681573
# Heliocentric elements and errors
Epoch: 2451755.5000 = 2000/07/30
Mean Anomaly: 307.16448 +/- 0.000
Argument of Peri: 82.99545 +/- 0.000
Long of Asc Node: 285.05442 +/- 0.000
Inclination: 11.23588 +/- 0.000
Eccentricity: 0.23430835 +/- 0.0000
Semi-Major Axis: 43.56639604 +/- 0.0000
Time of Perihelion: 2467170.7075 +/- 0.0
Perihelion: 33.35842550 +/- 0.0000
Aphelion: 53.77436659 +/- 0.0000
Period (y) 287.5648 +/- 0.00
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X 13.42824926 +/- 0.0000
Ecliptic Y -36.87950556 +/- 0.0000
Ecliptic Z 0.67313432 +/- 0.0000
Ecliptic XDOT 0.00237868 +/- 0.0000
Ecliptic YDOT 0.00152971 +/- 0.0000
Ecliptic ZDOT 0.00053525 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 39.25403857 +/- 0.0000
Geocenter to KBO 38.27613540 +/- 0.0000
# Hcoef: 8.21
The following table shows the complete astrometric record for 118698. 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 (118698) followed by the observatory code and reference code for the source of the astrometry.
2000 07 28.18083 19 24 14.21 -21 00 36.3 23.9R 118698 309 Cb7916 2000 07 28.22055 19 24 14.00 -21 00 36.5 118698 309 Cb7916 2000 07 28.25960 19 24 13.80 -21 00 36.8 23.8R 118698 309 Cb7916 2000 07 29.07469 19 24 09.61 -21 00 43.1 23.8R 118698 309 Cb7916 2000 07 29.18657 19 24 09.03 -21 00 44.1 23.6R 118698 309 Cb7916 2000 07 29.22275 19 24 08.84 -21 00 44.4 23.7R 118698 309 Cb7916 2000 08 03.05532 19 23 44.41 -21 01 21.7 24.0R 118698 809 Cb7916 2000 08 03.09550 19 23 44.22 -21 01 22.4 118698 809 Cb7916 2000 08 03.11642 19 23 44.12 -21 01 22.4 118698 809 Cb7916 2000 08 07.02778 19 23 25.05 -21 01 51.4 23.6R 118698 809 Cb9203 2000 08 07.03376 19 23 25.03 -21 01 51.7 23.8R 118698 809 Cb9203 2000 08 07.05300 19 23 24.95 -21 01 51.8 24.2R 118698 809 Cb9203 2000 08 08.03261 19 23 20.28 -21 01 59.2 24.0R 118698 809 Cb9203 2000 08 08.04453 19 23 20.23 -21 01 59.2 24.2R 118698 809 Cb9203 2000 08 08.05646 19 23 20.17 -21 01 59.3 23.8R 118698 809 Cb9203 2000 09 23.22810 19 21 00.19 -21 05 16.4 23.7R 118698 568 Cb9203 2000 09 23.33348 19 21 00.06 -21 05 16.4 118698 568 Cb9203 2000 09 24.22247 19 20 59.33 -21 05 16.7 23.9R 118698 568 Cb9203 2001 05 29.37243 19 35 22.99 -20 21 51.0 23.4R 118698 695 Cd3308 2001 05 29.42104 19 35 22.81 -20 21 51.2 118698 695 Cd3308 2001 07 24.29957 19 30 48.93 -20 28 44.2 118698 568 Cd3308 2001 07 24.33033 19 30 48.76 -20 28 44.4 118698 568 Cd3308 2001 07 25.30196 19 30 43.61 -20 28 53.2 118698 568 Cd3308 2001 07 25.32751 19 30 43.47 -20 28 53.4 118698 568 Cd3308 2002 07 05.32301 19 38 47.40 -19 53 07.0 23.4R 118698 695 Cf8835 2002 07 05.36408 19 38 47.15 -19 53 07.3 23.6R 118698 695 Cf8835 2002 07 05.41774 19 38 46.84 -19 53 08.0 118698 695 Cf8835 2002 07 06.29244 19 38 42.21 -19 53 15.7 118698 695 Cf8835 2002 07 06.31943 19 38 42.03 -19 53 15.4 118698 695 Cf8835 2002 07 06.34566 19 38 41.90 -19 53 16.2 118698 695 Cf8835 2004 10 12.14623 19 45 28.50 -18 57 29.6 24.0R 118698 309 Cn8269 2004 10 12.99959 19 45 28.97 -18 57 28.9 24.2R 118698 309 Cn8269 2006 06 13.39938 20 05 46.670 -17 26 47.47 23.4R 118698 500 2006 06 13.40378 20 05 46.648 -17 26 47.51 118698 500 2006 06 13.40818 20 05 46.631 -17 26 47.53 118698 500 2006 06 13.41258 20 05 46.613 -17 26 47.57 118698 500
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 -0.17 0.00 -0.26 2 0.0001 0.00 -0.07 0.00 0.18 3 0.0002 0.00 0.00 0.00 0.18 4 0.0024 0.00 0.01 0.00 0.34 5 0.0028 0.00 0.10 0.00 0.23 6 0.0029 0.00 0.09 0.00 0.21 7 0.0161 0.00 -0.09 0.00 0.38 8 0.0162 0.00 0.10 0.00 -0.01 9 0.0163 0.00 0.18 0.00 0.15 10 0.0270 0.00 -0.21 0.00 0.33 11 0.0270 0.00 -0.08 0.00 0.08 12 0.0270 0.00 0.13 0.00 0.12 13 0.0297 0.00 -0.11 0.00 -0.16 14 0.0297 0.00 0.00 0.00 -0.07 15 0.0298 0.00 -0.04 0.00 -0.08 16 0.1562 0.00 0.31 0.00 -0.44 17 0.1565 0.00 -0.07 0.00 -0.41 18 0.1589 0.00 0.22 0.00 -0.42 19 0.8356 0.00 0.27 0.00 -0.04 20 0.8357 0.00 0.22 0.00 -0.05 21 0.9887 0.00 0.28 0.00 -0.13 22 0.9888 0.00 0.22 0.00 -0.05 23 0.9914 0.00 0.35 0.00 -0.12 24 0.9915 0.00 0.31 0.00 -0.08 25 1.9360 0.00 0.40 0.00 -0.26 26 1.9362 0.00 -0.01 0.00 -0.18 27 1.9363 0.00 -0.30 0.00 -0.40 28 1.9387 0.00 0.15 0.00 -0.02 29 1.9388 0.00 -0.35 0.00 0.53 30 1.9388 0.00 -0.16 0.00 -0.03 31 4.2080 0.00 0.17 0.00 0.14 32 4.2103 0.00 -0.15 0.00 0.21 33 5.8760 0.00 -0.74 0.00 0.66 34 5.8760 0.00 -0.80 0.00 0.65 35 5.8761 0.00 -0.79 0.00 0.66 36 5.8761 0.00 -0.79 0.00 0.65
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.
118698 quality flag:3 Type: 7:4EEE 7:4EEE 7:4EEE axisobj 43.653 43.653 43.653 ecceobj 0.235 0.235 0.235 incobj 11.226 11.226 11.226 qmin 33.066 33.135 33.113 qmax 54.998 54.718 54.924 amean 43.726 43.726 43.726 amin 43.275 43.298 43.274 amax 44.256 44.247 44.242 emean 0.201 0.199 0.199 emin 0.157 0.156 0.156 emax 0.243 0.239 0.241 imean 14.280 14.390 14.333 imin 12.484 12.755 12.532 imax 15.631 16.022 15.722 fracstop 1.000 1.000 1.000 cjmean 2.976 2.975 2.976 libcent 0 178.7 178.1 183.7 libamp 0 100.7 104.5 103.1 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 88.7 89.2 88.7 kozaiamp 18.5 19.9 19.5