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: 07TD418 # Created Fri May 2 02:36:59 2008 # Orbit generated from Bernstein formalism # Fitting 11 observations of 11 # Arc: 39.85d # First observation: 2007/10/08 # Last observation: 2007/11/17 Preliminary a, adot, b, bdot, g, gdot: -0.000003 0.032067 0.000002 -0.000159 0.026660 0.000000 # Chi-squared of fit: 3.35 DOF: 16 RMS: 0.10 # Min/Max residuals: -0.17 0.19 # Exact a, adot, b, bdot, g, gdot: 1.727294E-05 2.885015E-02 2.148342E-08 -7.366259E-05 2.615879E-02 -6.172508E-03 # Covariance matrix: 8.8409E-13 1.0712E-10 7.5361E-14 -3.0090E-12 2.0051E-11 6.6341E-10 1.0712E-10 2.4184E-07 1.5828E-10 -6.4269E-09 3.7183E-08 -8.6395E-07 7.5361E-14 1.5828E-10 8.1997E-13 -1.1843E-11 2.4350E-11 -5.6354E-10 -3.0090E-12 -6.4269E-09 -1.1843E-11 2.7093E-10 -9.8764E-10 2.3365E-08 2.0051E-11 3.7183E-08 2.4350E-11 -9.8764E-10 5.7700E-09 -1.1014E-07 6.6341E-10 -8.6395E-07 -5.6354E-10 2.3365E-08 -1.1014E-07 1.3261E-05 # lat0 lon0 xBary yBary zBary JD0 -15.469545 28.727430 0.241976 -0.259030 -0.936394 2454381.756514 # Heliocentric elements and errors Epoch: 2454380.5000 = 2007/10/07 Mean Anomaly: 333.09862 +/- 6.319 Argument of Peri: 322.22798 +/- 14.716 Long of Asc Node: 118.89363 +/- 0.177 Inclination: 15.09194 +/- 0.001 Eccentricity: 0.33055483 +/- 0.1313 Semi-Major Axis: 52.76505981 +/- 5.8949 Time of Perihelion: 2464841.9087 +/- 1721.7 Perihelion: 35.32331438 +/- 7.9732 Aphelion: 70.20680523 +/- 10.4652 Period (y) 383.2903 +/- 64.23 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 33.27563298 +/- 0.0938 Ecliptic Y 17.95891112 +/- 0.0514 Ecliptic Z -10.19645915 +/- 0.0296 Ecliptic XDOT -0.00199282 +/- 0.0003 Ecliptic YDOT 0.00234630 +/- 0.0002 Ecliptic ZDOT 0.00016478 +/- 0.0001 # Distances at JD0 (AU) Heliocenter to KBO 39.16322277 +/- 0.0835 Geocenter to KBO 38.22807022 +/- 0.1110 # Hcoef: 7.87
The following table shows the complete astrometric record for 07TD418. 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 (07TD418) followed by the observatory code and reference code for the source of the astrometry.
2007 10 08.25576 02 08 35.01 -03 27 57.1 23.6R 07TD418 807 Cx2653 2007 10 10.32486 02 08 25.60 -03 29 01.3 23.5R 07TD418 807 Cx2653 2007 11 03.24977 02 06 31.16 -03 39 34.1 23.2R 07TD418 807 Cx2654 2007 11 07.26226 02 06 11.92 -03 40 54.7 23.6R 07TD418 807 Cx2654 2007 11 07.27862 02 06 11.84 -03 40 54.9 23.1I 07TD418 807 Cx2654 2007 11 11.12904 02 05 53.70 -03 42 03.8 23.5R 07TD418 807 Cx2654 2007 11 13.07251 02 05 44.70 -03 42 35.6 23.7R 07TD418 807 Cx2654 2007 11 13.10947 02 05 44.53 -03 42 36.1 23.1I 07TD418 807 Cx2654 2007 11 15.07051 02 05 35.55 -03 43 05.3 23.8R 07TD418 807 Cx2654 2007 11 15.10199 02 05 35.41 -03 43 05.8 23.0I 07TD418 807 Cx2654 2007 11 17.10267 02 05 26.40 -03 43 33.5 23.6R 07TD418 807 Cx2654
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 0.03 0.00 -0.01 2 0.0057 -154.44 -0.05 -10.92 0.02 3 0.0712 -1980.89 0.19 -5.66 -0.12 4 0.0822 -2278.95 -0.07 19.29 0.01 5 0.0822 -2280.14 -0.05 19.52 0.12 6 0.0927 -2558.70 -0.10 49.67 0.17 7 0.0981 -2696.07 -0.07 66.85 -0.17 8 0.0982 -2698.63 0.01 67.27 -0.11 9 0.1035 -2834.82 -0.02 86.77 0.14 10 0.1036 -2836.95 0.04 87.03 0.07 11 0.1091 -2973.04 0.09 108.10 -0.11
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.
07TD418 quality flag:0 Type: ERR2LARGE ERR2LARGE ERR2LARGE axisobj 0.000 0.000 0.000 ecceobj -1.000 -1.000 -1.000 incobj -1.000 -1.000 -1.000 qmin 0.000 0.000 0.000 qmax 0.000 0.000 0.000 amean 0.000 0.000 0.000 amin 0.000 0.000 0.000 amax 0.000 0.000 0.000 emean 0.000 0.000 0.000 emin 0.000 0.000 0.000 emax 0.000 0.000 0.000 imean 0.000 0.000 0.000 imin 0.000 0.000 0.000 imax 0.000 0.000 0.000 fracstop 0.000 0.000 0.000 cjmean 0.000 0.000 0.000 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 0.0 0.0 0.0 kozaiamp 0.0 0.0 0.0