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: 76803
# Created Fri May 2 02:36:19 2008
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting 28 observations of 28
# Arc: 3.96y
# First observation: 2000/07/31
# Last observation: 2004/07/15
# Chi-squared of fit: 93.00 DOF: 50 RMS: 0.32
# Min/Max residuals: -1.42 0.71
# Exact a, adot, b, bdot, g, gdot:
1.375702E-05 2.660110E-02 -1.130158E-05 -1.776056E-02 2.914356E-02 2.833230E-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
0.960073 -54.074062 -0.033381 0.016820 -1.014169 2451756.624613
# Heliocentric elements and errors
Epoch: 2451755.5000 = 2000/07/30
Mean Anomaly: 40.77154 +/- 0.000
Argument of Peri: 127.41685 +/- 0.000
Long of Asc Node: 127.38657 +/- 0.000
Inclination: 33.76497 +/- 0.000
Eccentricity: 0.12062002 +/- 0.0000
Semi-Major Axis: 38.57539143 +/- 0.0000
Time of Perihelion: 2441844.4762 +/- 0.0
Perihelion: 33.92242713 +/- 0.0000
Aphelion: 43.22835573 +/- 0.0000
Period (y) 239.5928 +/- 0.00
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X 20.75824511 +/- 0.0000
Ecliptic Y -28.57918265 +/- 0.0000
Ecliptic Z 0.57454251 +/- 0.0000
Ecliptic XDOT 0.00218905 +/- 0.0000
Ecliptic YDOT 0.00123370 +/- 0.0000
Ecliptic ZDOT -0.00166365 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 35.32705587 +/- 0.0000
Geocenter to KBO 34.31288065 +/- 0.0000
# Hcoef: 7.30
The following table shows the complete astrometric record for 76803. 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 (76803) followed by the observatory code and reference code for the source of the astrometry.
2000 07 31.12387 20 32 12.19 -17 51 36.0 21.4R 76803 807 Cc0967 2000 07 31.19562 20 32 11.78 -17 51 38.4 76803 807 Cc0967 2000 08 05.34368 20 31 42.44 -17 54 18.5 22.6R 76803 568 Cb8005 2000 08 05.39259 20 31 42.17 -17 54 20.0 22.2R 76803 568 Cb8005 2000 08 05.43348 20 31 41.93 -17 54 21.1 22.3R 76803 568 Cb8005 2000 08 06.33657 20 31 36.83 -17 54 49.3 22.4R 76803 568 Cb8005 2000 08 06.37780 20 31 36.60 -17 54 50.7 22.1R 76803 568 Cb8005 2000 08 06.41951 20 31 36.37 -17 54 51.9 22.2R 76803 568 Cb8005 2000 09 21.15474 20 28 08.56 -18 15 38.3 22.3R 76803 695 Ch1299 2000 09 21.21511 20 28 08.39 -18 15 39.6 76803 695 Ch1299 2000 09 23.24918 20 28 02.85 -18 16 22.2 22.5R 76803 568 Cc0967 2000 09 23.29902 20 28 02.72 -18 16 23.3 22.7R 76803 568 Cc0967 2000 09 23.34696 20 28 02.59 -18 16 24.3 23.0R 76803 568 Cc0967 2000 09 24.25098 20 28 00.29 -18 16 42.3 22.7R 76803 568 Cc0967 2000 09 24.30045 20 28 00.16 -18 16 43.3 22.6R 76803 568 Cc0967 2000 09 24.35897 20 28 00.01 -18 16 44.5 23.0R 76803 568 Cc0967 2001 07 18.43741 20 40 40.599 -18 20 58.52 76803 568 Cl6260 2001 07 19.44234 20 40 34.943 -18 21 29.95 76803 568 Cl6260 2001 07 26.35103 20 39 55.96 -18 25 07.8 76803 568 Cd7642 2001 07 26.41046 20 39 55.62 -18 25 09.8 23.0R 76803 568 Cd7642 2001 07 26.47112 20 39 55.26 -18 25 11.7 22.6R 76803 568 Cd7642 2001 08 22.89868 20 37 22.95 -18 39 22.5 22.8R 76803 493 Cd7642 2001 08 22.93308 20 37 22.80 -18 39 23.5 22.5R 76803 493 Cd7642 2002 06 15.40130 20 50 30.36 -18 39 25.3 22.5R 76803 695 Cf8836 2002 06 15.43413 20 50 30.20 -18 39 25.8 22.4R 76803 695 Cf8836 2003 10 23.09315 20 48 48.48 -20 07 46.9 22.2R 76803 695 Cj3635 2003 10 24.09751 20 48 48.56 -20 07 52.5 76803 695 Cj3635 2004 07 15.99641 21 02 37.10 -20 00 17.9 22.1R 76803 586 Cl0791
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 -1.42 2 0.0002 0.00 0.23 0.00 0.23 3 0.0143 0.00 -0.16 0.00 0.10 4 0.0144 0.00 0.02 0.00 0.12 5 0.0145 0.00 -0.04 0.00 0.29 6 0.0170 0.00 -0.11 0.00 0.02 7 0.0171 0.00 0.00 0.00 -0.10 8 0.0172 0.00 0.14 0.00 -0.01 9 0.1425 0.00 -0.09 0.00 -0.37 10 0.1426 0.00 0.00 0.00 -0.39 11 0.1482 0.00 -0.07 0.00 -0.36 12 0.1483 0.00 0.02 0.00 -0.44 13 0.1485 0.00 0.02 0.00 -0.46 14 0.1509 0.00 0.21 0.00 0.02 15 0.1511 0.00 0.21 0.00 0.02 16 0.1512 0.00 0.26 0.00 -0.01 17 0.9646 0.00 0.71 0.00 0.05 18 0.9673 0.00 -0.21 0.00 0.13 19 0.9862 0.00 -0.17 0.00 0.58 20 0.9864 0.00 -0.11 0.00 0.48 21 0.9866 0.00 -0.24 0.00 0.50 22 1.0617 0.00 0.02 0.00 0.20 23 1.0618 0.00 0.48 0.00 0.21 24 1.8734 0.00 0.41 0.00 -0.49 25 1.8735 0.00 -0.21 0.00 -0.15 26 3.2278 0.00 -0.05 0.00 0.07 27 3.2306 0.00 0.05 0.00 0.15 28 3.9586 0.00 0.03 0.00 -0.25
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.
76803 quality flag:3 Type: SCATNEAR SCATNEAR SCATNEAR axisobj 38.637 38.637 38.637 ecceobj 0.122 0.122 0.122 incobj 33.739 33.739 33.739 qmin 33.514 32.790 33.423 qmax 43.968 44.827 44.262 amean 38.623 38.617 38.691 amin 38.307 38.270 38.334 amax 39.007 39.006 39.033 emean 0.112 0.123 0.116 emin 0.096 0.100 0.098 emax 0.129 0.150 0.134 imean 32.400 32.272 32.370 imin 31.934 31.810 31.932 imax 32.849 32.802 32.811 fracstop 1.000 1.000 1.000 cjmean 2.681 2.681 2.681 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 187.0 189.7 188.8 kozaiamp 179.9 180.0 179.9