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: 80806
# Created Fri Jan 9 02:36:23 2009
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting 26 observations of 26
# Arc: 5.75y
# First observation: 2000/02/06
# Last observation: 2005/11/05
# Chi-squared of fit: 118.70 DOF: 46 RMS: 0.38
# Min/Max residuals: -0.90 0.72
# Exact a, adot, b, bdot, g, gdot:
1.558726E-05 2.400875E-02 6.205175E-08 2.229079E-05 2.456909E-02 1.552283E-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
3.846930 134.748439 -0.042420 0.066086 -0.985984 2451580.798323
# Heliocentric elements and errors
Epoch: 2451580.5000 = 2000/02/06
Mean Anomaly: 75.96664 +/- 0.000
Argument of Peri: 5.43492 +/- 0.000
Long of Asc Node: 45.48998 +/- 0.000
Inclination: 3.75634 +/- 0.000
Eccentricity: 0.06984074 +/- 0.0000
Semi-Major Axis: 42.20137428 +/- 0.0000
Time of Perihelion: 2430450.0512 +/- 0.0
Perihelion: 39.25399907 +/- 0.0000
Aphelion: 45.14874948 +/- 0.0000
Period (y) 274.1562 +/- 0.00
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X -29.30846346 +/- 0.0000
Ecliptic Y 29.51585973 +/- 0.0000
Ecliptic Z 2.73072740 +/- 0.0000
Ecliptic XDOT -0.00202715 +/- 0.0000
Ecliptic YDOT -0.00175389 +/- 0.0000
Ecliptic ZDOT 0.00001419 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 41.68483270 +/- 0.0000
Geocenter to KBO 40.70154484 +/- 0.0000
# Hcoef: 6.21
The following table shows the complete astrometric record for 80806. 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 (80806) followed by the observatory code and reference code for the source of the astrometry.
2000 02 06.29758 09 13 38.01 +20 05 07.7 22.1R 80806 695 Cb1115 2000 02 06.42649 09 13 37.33 +20 05 10.5 80806 695 Cb1115 2000 03 01.11833 09 11 41.94 +20 13 02.4 22.1R 80806 695 Cb1115 2000 03 01.20021 09 11 41.55 +20 13 03.8 80806 695 Cb1115 2000 03 01.32049 09 11 40.99 +20 13 05.3 80806 695 Cb1115 2000 12 21.49799 09 22 32.52 +19 23 17.2 80806 568 Cc3758 2000 12 21.62890 09 22 32.11 +19 23 19.8 80806 568 Cc3758 2000 12 22.60977 09 22 29.12 +19 23 37.9 23.2R 80806 568 Cc3758 2001 02 21.20946 09 17 54.57 +19 45 53.4 22.5R 80806 688 Cc6636 2001 02 21.25983 09 17 54.28 +19 45 54.4 80806 688 Cc6636 2001 02 25.36154 09 17 34.77 +19 47 14.3 22.5R 80806 568 Cd0809 2001 02 25.41685 09 17 34.51 +19 47 15.3 80806 568 Cd0809 2001 03 26.10639 09 15 41.35 +19 54 01.5 20.2 80806 304 Ce8743 2001 03 26.13061 09 15 41.26 +19 54 01.6 80806 304 Ce8743 2001 04 26.28050 09 14 49.94 +19 55 04.0 22.6R 80806 568 Cd0809 2001 04 26.36598 09 14 49.92 +19 55 03.7 80806 568 Cd0809 2001 04 27.26924 09 14 49.79 +19 54 58.9 80806 568 Cd0809 2002 02 06.51755 09 24 40.79 +19 15 07.0 22.0R 80806 568 Cf1711 2002 02 06.56619 09 24 40.55 +19 15 08.0 80806 568 Cf1711 2002 02 13.17623 09 24 07.54 +19 17 40.0 21.7R 80806 304 f1711 2002 02 13.22398 09 24 07.29 +19 17 41.1 80806 304 f1711 2004 03 18.21534 09 32 32.95 +18 36 13.1 22.6R 80806 688 Ck2009 2004 03 18.29870 09 32 32.65 +18 36 14.2 80806 688 Ck2009 2005 11 05.93393 09 49 39.340 +17 05 11.37 22.8R 80806 500 2005 11 05.94064 09 49 39.354 +17 05 11.34 80806 500 2005 11 05.94735 09 49 39.367 +17 05 11.31 80806 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 0.08 0.00 -0.17 2 0.0004 0.00 -0.21 0.00 -0.06 3 0.0652 0.00 0.26 0.00 0.27 4 0.0654 0.00 0.02 0.00 0.27 5 0.0658 0.00 -0.13 0.00 -0.26 6 0.8739 0.00 0.03 0.00 -0.09 7 0.8743 0.00 0.04 0.00 0.09 8 0.8770 0.00 0.70 0.00 -0.05 9 1.0429 0.00 0.42 0.00 -0.11 10 1.0430 0.00 -0.22 0.00 -0.12 11 1.0542 0.00 0.01 0.00 0.09 12 1.0544 0.00 0.08 0.00 0.04 13 1.1329 0.00 0.16 0.00 -0.02 14 1.1330 0.00 -0.08 0.00 -0.13 15 1.2183 0.00 0.07 0.00 -0.15 16 1.2185 0.00 0.11 0.00 -0.01 17 1.2210 0.00 0.05 0.00 -0.23 18 2.0020 0.00 -0.58 0.00 -0.51 19 2.0021 0.00 -0.48 0.00 -0.62 20 2.0202 0.00 0.23 0.00 0.69 21 2.0203 0.00 0.11 0.00 0.72 22 4.1120 0.00 -0.02 0.00 0.03 23 4.1123 0.00 0.29 0.00 -0.05 24 5.7485 0.00 0.62 0.00 -0.89 25 5.7485 0.00 0.64 0.00 -0.89 26 5.7485 0.00 0.65 0.00 -0.90
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.
80806 quality flag:3 Type: CLASSICAL CLASSICAL CLASSICAL axisobj 42.188 42.188 42.188 ecceobj 0.070 0.070 0.070 incobj 3.756 3.756 3.756 qmin 38.660 38.666 38.627 qmax 45.913 45.940 45.958 amean 42.205 42.205 42.203 amin 41.866 41.862 41.862 amax 42.557 42.561 42.552 emean 0.054 0.054 0.055 emin 0.023 0.023 0.026 emax 0.080 0.080 0.080 imean 2.161 2.159 2.161 imin 0.166 0.166 0.153 imax 3.337 3.337 3.337 fracstop 1.000 1.000 1.000 cjmean 3.075 3.075 3.075 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 177.7 177.6 177.4 kozaiamp 180.0 180.0 180.0