The following information shows the result of the orbit fit based on Gary Bernstein's method. Most of the information should be self-explanatory. Take special note that while the original Bernstein software works with barycentric coordinates, we convert these results into a heliocentric coordinate system.
# Object: 04MW8 # Created Thu May 24 01:37:27 2012 # Orbit generated from Bernstein formalism # Fitting 17 observations of 17 # Arc: 4.99y # First observation: 2004/06/24 # Last observation: 2009/06/21 Preliminary a, adot, b, bdot, g, gdot: -0.001697 0.038239 -0.000269 0.005477 0.035172 0.000000 # Chi-squared of fit: 27.16 DOF: 28 RMS: 0.22 # Min/Max residuals: -0.43 0.39 # Exact a, adot, b, bdot, g, gdot: 1.662561E-05 3.574024E-02 2.176864E-06 5.124801E-03 3.293426E-02 -1.223624E-02 # Covariance matrix: 2.8599E-13 -1.7004E-13 9.0616E-15 -1.5455E-14 -4.6691E-14 -5.8592E-13 -1.7004E-13 2.2204E-13 -1.6371E-14 2.7955E-14 1.4616E-13 1.0594E-12 9.0616E-15 -1.6371E-14 2.2420E-13 -6.4162E-14 -1.2564E-14 -8.8973E-14 -1.5455E-14 2.7955E-14 -6.4162E-14 3.1086E-14 2.1656E-14 1.5194E-13 -4.6691E-14 1.4616E-13 -1.2564E-14 2.1656E-14 4.9365E-13 8.1783E-13 -5.8592E-13 1.0594E-12 -8.8973E-14 1.5194E-13 8.1783E-13 5.7576E-12 # lat0 lon0 xBary yBary zBary JD0 -0.640737 -74.359111 0.215810 -0.011083 -0.995201 2453180.936473 # Heliocentric elements and errors Epoch: 2453180.5000 = 2004/06/24 Mean Anomaly: 299.15869 +/- 0.011 Argument of Peri: 94.76227 +/- 0.010 Long of Asc Node: 289.53903 +/- 0.000 Inclination: 8.22001 +/- 0.000 Eccentricity: 0.33108081 +/- 0.0001 Semi-Major Axis: 33.37213676 +/- 0.0035 Time of Perihelion: 2465081.1448 +/- 1.0 Perihelion: 22.32326264 +/- 0.0032 Aphelion: 44.42101088 +/- 0.0052 Period (y) 192.7899 +/- 0.03 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 8.24270208 +/- 0.0002 Ecliptic Y -30.25214949 +/- 0.0006 Ecliptic Z -0.33944367 +/- 0.0000 Ecliptic XDOT 0.00258578 +/- 0.0000 Ecliptic YDOT 0.00176894 +/- 0.0000 Ecliptic ZDOT 0.00043749 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 31.35681598 +/- 0.0006 Geocenter to KBO 30.36352082 +/- 0.0006 # Hcoef: 8.69
The following table shows the complete astrometric record for 04MW8. 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 (04MW8) followed by the observatory code and reference code for the source of the astrometry.
2004 06 24.43573 19 08 12.18 -23 09 32.3 04MW8 568 C~0X5X 2004 06 24.46335 19 08 11.97 -23 09 32.7 04MW8 568 C~0X5X 2004 06 25.45953 19 08 05.34 -23 09 40.7 23.4g 04MW8 568 C~0X5X 2004 06 25.48243 19 08 05.19 -23 09 40.8 23.4g 04MW8 568 C~0X5X 2004 06 25.50096 19 08 05.08 -23 09 41.1 23.6g 04MW8 568 C~0X5X 2006 07 03.43985 19 24 56.39 -22 02 06.1 23.8r 04MW8 568 C~0X5X 2006 07 03.46415 19 24 56.21 -22 02 06.5 23.6r 04MW8 568 C~0X5X 2006 07 03.48530 19 24 56.07 -22 02 07.1 23.1r 04MW8 568 C~0X5X 2006 07 04.43936 19 24 49.54 -22 02 17.3 04MW8 568 C~0X5X 2006 10 23.12298 19 18 35.52 -22 08 52.0 04MW8 675 C~0X5X 2007 05 15.44840 19 38 16.75 -21 16 44.7 04MW8 675 C~0X5X 2007 05 15.45289 19 38 16.74 -21 16 44.6 04MW8 675 C~0X5X 2007 05 16.42809 19 38 13.99 -21 16 47.7 04MW8 675 C~0X5X 2007 09 16.17086 19 27 08.02 -21 35 00.4 04MW8 675 C~0X5X 2009 06 20.45959 19 54 02.32 -19 55 08.2 04MW8 695 C~0X5X 2009 06 21.37745 19 53 56.85 -19 55 18.8 04MW8 695 C~0X5X 2009 06 21.43962 19 53 56.44 -19 55 20.0 04MW8 695 C~0X5X
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 0.11 0.00 0.06 2 0.0001 -2.92 -0.22 -0.06 -0.08 3 0.0028 -94.67 -0.06 2.65 0.02 4 0.0029 -96.73 0.03 2.79 0.10 5 0.0029 -98.28 0.23 2.67 -0.08 6 2.0233 14339.11 -0.04 2197.46 0.38 7 2.0233 14336.56 -0.22 2197.42 0.26 8 2.0234 14334.54 -0.17 2197.11 -0.12 9 2.0260 14242.78 -0.34 2200.10 -0.04 10 2.3291 9023.03 0.34 2531.41 0.26 11 2.8885 25897.25 0.12 3166.03 -0.38 12 2.8885 25897.13 0.18 3166.16 -0.27 13 2.8911 25858.11 0.22 3169.46 -0.38 14 3.2272 16402.46 -0.03 3542.84 -0.01 15 4.9884 40202.64 -0.43 5681.64 -0.09 16 4.9909 40121.92 0.39 5685.71 0.37 17 4.9911 40115.79 -0.07 5685.61 0.00
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.
04MW8 quality flag:3 Type: CENTAURR CENTAURR CENTAURR axisobj 33.472 33.482 33.462 ecceobj 0.335 0.335 0.335 incobj 8.214 8.214 8.214 qmin 22.155 22.156 21.683 qmax 44.702 44.713 44.782 amean 33.337 33.337 33.034 amin 33.079 33.085 32.405 amax 33.509 33.519 33.620 emean 0.332 0.332 0.328 emin 0.330 0.330 0.321 emax 0.334 0.334 0.334 imean 9.796 9.797 9.898 imin 9.784 9.784 9.716 imax 9.815 9.816 10.066 excite_mean 0.373 0.373 0.371 fracstop 0.000 0.000 0.002 cjmean 2.859 2.859 2.860 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 94.5 94.5 96.8 kozaiamp 0.3 0.3 5.2