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: 79983
# Created Fri May 2 02:36:19 2008
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting 18 observations of 18
# Arc: 5.08y
# First observation: 1999/02/20
# Last observation: 2004/03/22
# Chi-squared of fit: 43.67 DOF: 30 RMS: 0.28
# Min/Max residuals: -0.54 1.00
# Exact a, adot, b, bdot, g, gdot:
1.533761E-05 2.707403E-02 -3.650359E-06 -4.677596E-03 2.578468E-02 -2.619889E-05
# 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
0.576444 151.609408 0.002760 0.009781 -0.995893 2451229.799883
# Heliocentric elements and errors
Epoch: 2451230.5000 = 1999/02/21
Mean Anomaly: 0.33661 +/- 0.000
Argument of Peri: 176.26480 +/- 0.000
Long of Asc Node: 334.84111 +/- 0.000
Inclination: 9.84270 +/- 0.000
Eccentricity: 0.13846571 +/- 0.0000
Semi-Major Axis: 46.16329659 +/- 0.0000
Time of Perihelion: 2451123.3793 +/- 0.0
Perihelion: 39.77126307 +/- 0.0000
Aphelion: 52.55533012 +/- 0.0000
Period (y) 313.6559 +/- 0.00
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X -34.98332051 +/- 0.0000
Ecliptic Y 18.91507803 +/- 0.0000
Ecliptic Z 0.39005565 +/- 0.0000
Ecliptic XDOT -0.00137065 +/- 0.0000
Ecliptic YDOT -0.00251896 +/- 0.0000
Ecliptic ZDOT -0.00049667 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 39.77140914 +/- 0.0000
Geocenter to KBO 38.78275828 +/- 0.0000
# Hcoef: 6.10
The following table shows the complete astrometric record for 79983. 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 (79983) followed by the observatory code and reference code for the source of the astrometry.
1999 02 20.29914 10 15 20.02 +11 26 27.0 21.5R 79983 695 Cb7529 1999 02 20.34947 10 15 19.74 +11 26 27.8 21.5R 79983 695 Cb7529 1999 02 20.39919 10 15 19.49 +11 26 29.4 21.5R 79983 695 Cb7529 1999 04 12.37862 10 11 44.10 +11 43 50.9 21.0R 79983 568 Cb7529 1999 04 12.41296 10 11 44.01 +11 43 51.1 21.0R 79983 568 Cb7529 1999 05 06.36492 10 11 01.78 +11 46 20.6 21.9R 79983 568 Cb7529 1999 05 07.23740 10 11 01.23 +11 46 20.6 21.9R 79983 568 Cb7529 2000 05 06.27118 10 16 26.30 +10 59 08.5 22.1R 79983 568 Cb7529 2000 05 06.33998 10 16 26.25 +10 59 08.4 22.1R 79983 568 Cb7529 2000 05 07.24338 10 16 25.62 +10 59 09.0 22.1R 79983 568 Cb7529 2000 05 07.29106 10 16 25.58 +10 59 09.1 22.0R 79983 568 Cb7529 2001 02 14.99821 10 26 41.76 +09 47 16.4 79983 950 Cc6424 2001 02 15.01328 10 26 41.69 +09 47 16.5 22.7R 79983 950 Cc6424 2001 02 15.03609 10 26 41.57 +09 47 17.2 79983 950 Cc6424 2001 02 21.19598 10 26 11.44 +09 49 54.8 21.3R 79983 688 Cc6424 2001 02 21.24398 10 26 11.17 +09 49 56.0 79983 688 Cc6424 2004 03 22.26853 10 40 10.32 +07 34 18.5 22.4R 79983 662 Ck1971 2004 03 22.32369 10 40 10.06 +07 34 19.3 79983 662 Ck1971
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 1.00 2 0.0001 0.00 -0.02 0.00 -0.43 3 0.0003 0.00 0.00 0.00 -0.07 4 0.1398 0.00 -0.24 0.00 0.07 5 0.1399 0.00 -0.11 0.00 -0.14 6 0.2055 0.00 -0.22 0.00 -0.20 7 0.2079 0.00 -0.20 0.00 -0.20 8 1.2073 0.00 0.11 0.00 0.14 9 1.2075 0.00 0.22 0.00 -0.03 10 1.2100 0.00 0.18 0.00 -0.15 11 1.2101 0.00 0.12 0.00 -0.08 12 1.9869 0.00 0.07 0.00 0.34 13 1.9869 0.00 0.13 0.00 0.05 14 1.9870 0.00 0.02 0.00 0.17 15 2.0038 0.00 0.46 0.00 0.43 16 2.0040 0.00 0.00 0.00 0.39 17 5.0841 0.00 0.01 0.00 -0.02 18 5.0843 0.00 -0.20 0.00 -0.54
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.
79983 quality flag:3 Type: CLASSICAL CLASSICAL CLASSICAL axisobj 46.289 46.289 46.289 ecceobj 0.141 0.141 0.141 incobj 9.831 9.831 9.831 qmin 38.947 38.960 39.008 qmax 54.293 54.301 54.300 amean 46.465 46.465 46.459 amin 46.065 46.066 46.063 amax 46.897 46.897 46.916 emean 0.146 0.146 0.145 emin 0.133 0.133 0.133 emax 0.158 0.158 0.158 imean 10.674 10.674 10.673 imin 10.305 10.303 10.298 imax 11.019 11.018 11.017 fracstop 1.000 1.000 1.000 cjmean 3.063 3.063 3.063 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 189.1 189.1 189.1 kozaiamp 179.9 180.0 179.9