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: 00GW146 # Created Fri May 2 02:36:31 2008 # Orbit generated from Bernstein formalism # Fitting 6 observations of 6 # Arc: 1.18d # First observation: 2000/04/03 # Last observation: 2000/04/04 # WARNING Fitting with energy constraint # WARNING and with gdot fixed = 0 # Chi-squared of fit: 6.47 DOF: 8 RMS: 0.18 # Min/Max residuals: -0.30 0.38 # Exact a, adot, b, bdot, g, gdot: 1.324380E-05 2.192060E-02 -7.576910E-06 -1.179321E-02 2.495856E-02 0.000000E+00 # Covariance matrix: 4.6841E-11 7.2870E-08 5.7805E-15 9.4076E-11 1.1648E-08 0.0000E+00 7.2870E-08 1.1464E-04 8.7626E-12 1.4797E-07 1.8283E-05 0.0000E+00 5.7805E-15 8.7626E-12 3.4698E-13 -1.0444E-10 1.4182E-12 0.0000E+00 9.4076E-11 1.4797E-07 -1.0444E-10 1.0702E-07 2.3600E-08 0.0000E+00 1.1648E-08 1.8283E-05 1.4182E-12 2.3600E-08 2.9183E-06 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 2.0459E-04 # lat0 lon0 xBary yBary zBary JD0 -0.010396 -171.192139 -0.091282 -0.000392 -1.003155 2451637.866863 # Heliocentric elements and errors Epoch: 2451630.5000 = 2000/03/27 Mean Anomaly: 7.05003 +/- 354.817 Argument of Peri: 172.50972 +/- 61.433 Long of Asc Node: 8.91308 +/- 0.001 Inclination: 28.35345 +/- 11.775 Eccentricity: 0.02975270 +/- 0.5714 Semi-Major Axis: 42.31130347 +/- 22.0747 Time of Perihelion: 2449661.8373 +/- 300130.0 Perihelion: 41.05242810 +/- 32.2985 Aphelion: 43.57017885 +/- 33.1841 Period (y) 275.2281 +/- 215.39 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X -40.56458822 +/- 2.7101 Ecliptic Y -6.37590946 +/- 0.4197 Ecliptic Z -0.00755953 +/- 0.0005 Ecliptic XDOT 0.00036226 +/- 0.0016 Ecliptic YDOT -0.00236950 +/- 0.0010 Ecliptic ZDOT -0.00129355 +/- 0.0001 # Distances at JD0 (AU) Heliocenter to KBO 41.06261190 +/- 2.6780 Geocenter to KBO 40.06641101 +/- 2.7424 # Hcoef: 8.07
The following table shows the complete astrometric record for 00GW146. 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 (00GW146) followed by the observatory code and reference code for the source of the astrometry.
2000 04 03.36612 12 32 20.88 -03 30 05.4 23.7R 00GW146 568 Cb2885 2000 04 03.40119 12 32 20.70 -03 30 04.5 23.7R 00GW146 568 Cb2885 2000 04 03.44110 12 32 20.49 -03 30 03.6 23.7R 00GW146 568 Cb2885 2000 04 04.46209 12 32 15.58 -03 29 39.0 23.9R 00GW146 568 Cb2885 2000 04 04.51645 12 32 15.27 -03 29 38.1 23.9R 00GW146 568 Cb2885 2000 04 04.54115 12 32 15.18 -03 29 37.6 23.9R 00GW146 568 Cb2885
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 0.13 0.00 0.02 2 0.0001 -2.83 0.01 -0.23 0.04 3 0.0002 -6.08 -0.16 -0.65 -0.09 4 0.0030 -83.34 0.14 -6.98 0.38 5 0.0031 -87.96 -0.30 -7.99 -0.23 6 0.0032 -89.39 0.17 -8.06 -0.13
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.
00GW146 quality flag:3 Type: SCATNEAR SCATNEAR SCATNEAR axisobj 43.545 43.545 43.545 ecceobj 0.060 0.060 0.060 incobj 27.734 27.734 27.734 qmin 39.988 39.988 39.988 qmax 47.809 47.808 47.809 amean 43.811 43.811 43.811 amin 43.460 43.460 43.460 amax 44.174 44.172 44.174 emean 0.069 0.069 0.069 emin 0.057 0.057 0.057 emax 0.083 0.083 0.083 imean 27.754 27.754 27.754 imin 27.452 27.452 27.452 imax 28.030 28.030 28.030 fracstop 1.000 1.000 1.000 cjmean 2.817 2.817 2.817 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 181.0 181.0 181.0 kozaiamp 179.9 179.9 179.9