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: 86177 # Created Fri May 2 02:36:19 2008 # Orbit generated by ELGB # -->Covariance matrix from a Bernstein fit # Fitting 26 observations of 26 # Arc: 4.94y # First observation: 1999/09/08 # Last observation: 2004/08/16 # Chi-squared of fit: 41.17 DOF: 46 RMS: 0.22 # Min/Max residuals: -0.92 0.57 # Exact a, adot, b, bdot, g, gdot: 1.563687E-05 2.808392E-02 8.464557E-06 1.146207E-02 2.753947E-02 -5.181023E-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 -0.315898 -34.660560 -0.336707 -0.005435 -0.942320 2451429.803363 # Heliocentric elements and errors Epoch: 2451430.5000 = 1999/09/09 Mean Anomaly: 328.01735 +/- 0.000 Argument of Peri: 50.50764 +/- 0.000 Long of Asc Node: 326.62249 +/- 0.000 Inclination: 22.14278 +/- 0.000 Eccentricity: 0.24252923 +/- 0.0000 Semi-Major Axis: 45.58962138 +/- 0.0000 Time of Perihelion: 2461419.2072 +/- 0.0 Perihelion: 34.53280558 +/- 0.0000 Aphelion: 56.64643718 +/- 0.0000 Period (y) 307.8273 +/- 0.00 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 30.84167098 +/- 0.0000 Ecliptic Y -20.90714612 +/- 0.0000 Ecliptic Z -0.19986929 +/- 0.0000 Ecliptic XDOT 0.00116525 +/- 0.0000 Ecliptic YDOT 0.00259417 +/- 0.0000 Ecliptic ZDOT 0.00114239 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 37.26077185 +/- 0.0000 Geocenter to KBO 36.31165975 +/- 0.0000 # Hcoef: 6.13
The following table shows the complete astrometric record for 86177. 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 (86177) followed by the observatory code and reference code for the source of the astrometry.
1999 09 08.30262 21 50 52.71 -13 22 20.0 22.5R 86177 568 Ca9937 1999 09 08.35493 21 50 52.44 -13 22 20.9 22.3R 86177 568 Ca9937 1999 09 08.40789 21 50 52.18 -13 22 21.8 22.4R 86177 568 Ca9937 1999 09 10.33157 21 50 42.64 -13 22 57.8 22.0R 86177 568 Ca9937 1999 09 10.35183 21 50 42.57 -13 22 57.7 22.3R 86177 568 Ca9937 1999 09 13.29281 21 50 28.32 -13 23 51.2 22.4R 86177 568 Ca9937 1999 09 13.29978 21 50 28.29 -13 23 51.3 22.4R 86177 568 Ca9937 1999 09 14.26171 21 50 23.73 -13 24 08.4 22.5R 86177 568 Ca9937 1999 09 14.26881 21 50 23.68 -13 24 08.3 22.3R 86177 568 Ca9937 1999 10 09.25434 21 48 44.88 -13 29 42.0 22.7R 86177 568 Ca9937 1999 10 09.30813 21 48 44.71 -13 29 42.5 22.7R 86177 568 Ca9937 1999 11 10.27810 21 47 56.93 -13 30 01.3 22.4R 86177 568 Ca9937 1999 11 11.30924 21 47 57.15 -13 29 52.9 22.4R 86177 568 Ca9937 1999 11 13.31903 21 47 57.90 -13 29 34.6 22.6R 86177 568 Ca9937 2000 05 30.54321 22 02 34.56 -11 49 44.2 22.9R 86177 568 Cb6506 2000 05 31.54440 22 02 34.27 -11 49 38.7 22.9R 86177 568 Cb6506 2000 06 01.53536 22 02 33.89 -11 49 33.8 22.9R 86177 568 Cb6506 2001 07 18.48646 22 05 52.30 -10 43 26.3 86177 568 Cd7490 2001 07 19.48705 22 05 48.026 -10 43 42.34 0.1 86177 568 Cl7377 2001 09 14.46352 22 00 59.09 -11 03 11.8 22.3R 86177 568 Cd7490 2001 09 16.43521 22 00 49.69 -11 03 49.8 22.6R 86177 568 Cd7490 2001 09 20.36628 22 00 31.50 -11 05 04.7 22.2R 86177 568 Cd7490 2001 09 20.50501 22 00 30.85 -11 05 07.1 22.3R 86177 568 Cd7490 2004 08 15.42101 22 19 35.06 -07 12 17.4 22.4R 86177 568 Cl1757 2004 08 15.48369 22 19 34.72 -07 12 18.7 22.2R 86177 568 Cl1757 2004 08 16.36596 22 19 30.10 -07 12 38.2 22.3R 86177 568 Cl1757
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 -0.22 0.00 -0.92 2 0.0001 0.00 0.22 0.00 -0.22 3 0.0003 0.00 0.36 0.00 -0.13 4 0.0056 0.00 -0.23 0.00 -0.22 5 0.0056 0.00 0.24 0.00 0.26 6 0.0137 0.00 -0.08 0.00 -0.03 7 0.0137 0.00 -0.02 0.00 0.00 8 0.0163 0.00 0.07 0.00 -0.17 9 0.0163 0.00 -0.17 0.00 0.05 10 0.0847 0.00 0.13 0.00 0.23 11 0.0849 0.00 0.10 0.00 0.19 12 0.1724 0.00 -0.06 0.00 -0.19 13 0.1752 0.00 0.06 0.00 -0.20 14 0.1807 0.00 0.09 0.00 0.04 15 0.7262 0.00 -0.08 0.00 0.27 16 0.7289 0.00 -0.12 0.00 0.22 17 0.7316 0.00 -0.07 0.00 0.17 18 1.8595 0.00 -0.17 0.00 0.08 19 1.8622 0.00 0.34 0.00 -0.20 20 2.0182 0.00 -0.03 0.00 -0.09 21 2.0236 0.00 0.06 0.00 0.57 22 2.0344 0.00 -0.08 0.00 -0.02 23 2.0348 0.00 -0.25 0.00 0.11 24 4.9367 0.00 0.21 0.00 -0.08 25 4.9368 0.00 0.13 0.00 0.00 26 4.9393 0.00 0.09 0.00 -0.10
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.
86177 quality flag:3 Type: SCATNEAR SCATNEAR SCATNEAR axisobj 45.536 45.536 45.536 ecceobj 0.242 0.242 0.242 incobj 22.154 22.154 22.154 qmin 33.676 33.632 33.713 qmax 57.568 57.429 57.412 amean 45.345 45.302 45.310 amin 44.913 44.894 44.887 amax 45.851 45.791 45.796 emean 0.236 0.235 0.236 emin 0.215 0.214 0.215 emax 0.256 0.256 0.255 imean 23.342 23.340 23.330 imin 22.674 22.652 22.612 imax 23.956 23.932 23.950 fracstop 1.000 1.000 1.000 cjmean 2.853 2.853 2.853 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 172.2 172.5 172.7 kozaiamp 180.0 180.0 180.0