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: 07JK43 # Created Thu May 24 01:37:35 2012 # Orbit generated from Bernstein formalism # Fitting 21 observations of 21 # Arc: 5.00y # First observation: 2007/05/10 # Last observation: 2012/05/10 Preliminary a, adot, b, bdot, g, gdot: -0.002130 0.051360 -0.001565 0.050616 0.041459 0.000000 # Chi-squared of fit: 28.64 DOF: 36 RMS: 0.21 # Min/Max residuals: -0.49 0.44 # Exact a, adot, b, bdot, g, gdot: 1.707491E-05 4.831661E-02 1.739325E-05 4.773346E-02 4.363130E-02 -7.012369E-03 # Covariance matrix: 1.4773E-13 -9.5197E-14 2.1565E-14 -5.5755E-14 6.0449E-14 -2.3240E-13 -9.5197E-14 1.6473E-13 -5.3452E-14 1.3267E-13 -2.2698E-14 5.5093E-13 2.1565E-14 -5.3452E-14 1.3305E-13 -8.8499E-14 -2.0838E-15 -2.2069E-13 -5.5755E-14 1.3267E-13 -8.8499E-14 1.6101E-13 -6.3560E-15 5.4504E-13 6.0449E-14 -2.2698E-14 -2.0838E-15 -6.3560E-15 2.6434E-13 -3.0924E-14 -2.3240E-13 5.5093E-13 -2.2069E-13 5.4504E-13 -3.0924E-14 2.2622E-12 # lat0 lon0 xBary yBary zBary JD0 -5.252782 -131.502114 -0.009365 -0.091968 -1.000926 2454230.762094 # Heliocentric elements and errors Epoch: 2454230.5000 = 2007/05/10 Mean Anomaly: 354.84680 +/- 0.002 Argument of Peri: 10.23790 +/- 0.004 Long of Asc Node: 233.60575 +/- 0.000 Inclination: 44.82950 +/- 0.000 Eccentricity: 0.49510511 +/- 0.0001 Semi-Major Axis: 46.66927078 +/- 0.0056 Time of Perihelion: 2455897.4372 +/- 0.4 Perihelion: 23.56307641 +/- 0.0038 Aphelion: 69.77546515 +/- 0.0087 Period (y) 318.8267 +/- 0.06 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X -15.78406102 +/- 0.0002 Ecliptic Y -17.85674122 +/- 0.0002 Ecliptic Z -2.09782525 +/- 0.0000 Ecliptic XDOT 0.00238525 +/- 0.0000 Ecliptic YDOT -0.00188916 +/- 0.0000 Ecliptic ZDOT 0.00302288 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 23.92489624 +/- 0.0002 Geocenter to KBO 22.91932635 +/- 0.0003 # Hcoef: 7.69
The following table shows the complete astrometric record for 07JK43. 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 (07JK43) followed by the observatory code and reference code for the source of the astrometry.
2007 05 10.26134 14 57 53.44 -22 22 26.7 20.7R 07JK43 675 Cv1556 2007 05 10.30768 14 57 53.06 -22 22 23.8 20.9R 07JK43 675 Cv1556 2007 05 11.25263 14 57 45.34 -22 21 25.8 21.0R 07JK43 675 Cv1556 2007 05 11.29906 14 57 44.97 -22 21 22.5 21.2R 07JK43 675 Cv1556 2007 06 08.17901 14 54 14.35 -21 52 00.5 07JK43 675 Cv1556 2007 06 08.28422 14 54 13.65 -21 51 54.0 07JK43 675 Cv1556 2007 07 03.24944 14 52 06.05 -21 27 38.7 07JK43 675 Cv1556 2007 07 04.17813 14 52 02.88 -21 26 49.6 07JK43 675 Cv1556 2007 07 04.23228 14 52 02.71 -21 26 47.2 07JK43 675 Cv1556 2007 07 05.17815 14 51 59.68 -21 25 57.4 07JK43 675 Cv1556 2008 02 13.32221 15 18 54.59 -21 25 47.6 07JK43 304 Cx9520 2008 02 14.31123 15 18 56.59 -21 25 36.3 07JK43 304 Cx9520 2008 02 14.31575 15 18 56.60 -21 25 36.2 07JK43 304 Cx9520 2008 06 21.18237 15 07 29.50 -19 47 33.0 07JK43 675 Cz1692 2008 06 21.23613 15 07 29.20 -19 47 30.0 07JK43 675 Cz1692 2009 05 14.21024 15 26 37.18 -18 26 12.9 07JK43 675 C~070k 2009 05 14.26562 15 26 36.70 -18 26 09.4 07JK43 675 C~070k 2009 05 15.20785 15 26 29.03 -18 25 14.8 07JK43 675 C~070k 2009 05 15.26146 15 26 28.58 -18 25 11.8 07JK43 675 C~070k 2012 05 10.50628 16 09 16.414 -12 06 07.46 20.4i 07JK43 F51 C~0gaC 2012 05 10.51687 16 09 16.292 -12 06 06.66 20.4i 07JK43 F51 C~0gaC
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 0.09 0.00 -0.02 2 0.0001 -5.88 0.13 1.28 0.04 3 0.0027 -125.06 -0.11 26.33 -0.49 4 0.0028 -130.92 -0.03 28.03 -0.02 5 0.0792 -3441.67 0.15 872.36 0.44 6 0.0795 -3452.89 0.25 875.74 0.40 7 0.1478 -5580.67 0.14 1747.62 -0.04 8 0.1504 -5637.46 -0.47 1781.55 0.01 9 0.1505 -5640.44 -0.12 1783.15 -0.35 10 0.1531 -5695.57 0.01 1818.32 0.23 11 0.7640 16034.11 -0.13 8006.00 -0.02 12 0.7667 16058.47 -0.11 8024.10 0.00 13 0.7667 16058.59 -0.10 8024.23 0.05 14 1.1168 5170.31 -0.15 11179.74 -0.03 15 1.1170 5165.41 -0.14 11181.49 0.08 16 2.0122 19762.11 0.28 20174.94 -0.16 17 2.0123 19754.54 -0.08 20176.67 0.06 18 2.0149 19633.87 0.29 20202.93 -0.11 19 2.0151 19626.84 0.24 20204.27 -0.23 20 5.0027 52963.53 0.24 52455.25 0.03 21 5.0028 52961.45 -0.40 52455.66 0.12
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.
07JK43 quality flag:3 Type: CENTAURS CENTAURS CENTAURS axisobj 45.901 45.901 45.902 ecceobj 0.487 0.487 0.487 incobj 44.969 44.969 44.969 qmin 21.193 22.519 22.321 qmax 74.621 70.568 71.317 amean 46.121 46.132 46.223 amin 45.203 45.568 45.587 amax 48.043 46.813 47.100 emean 0.496 0.487 0.487 emin 0.467 0.463 0.459 emax 0.553 0.512 0.518 imean 45.587 45.975 46.059 imin 43.790 45.045 44.881 imax 46.803 46.888 47.130 excite_mean 0.870 0.869 0.869 fracstop 1.000 1.000 1.000 cjmean 2.155 2.155 2.153 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 130.5 150.5 167.4 kozaiamp 180.0 180.0 180.0