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: 99RK215 # Created Fri May 2 02:36:29 2008 # Orbit generated from Bernstein formalism # Fitting 14 observations of 15 # Arc: 4.20y # First observation: 1999/09/07 # Last observation: 2003/11/21 Preliminary a, adot, b, bdot, g, gdot: -0.000063 0.021231 -0.000003 -0.002675 0.023545 0.000000 # Chi-squared of fit: 17.04 DOF: 22 RMS: 0.20 # Min/Max residuals: -0.45 0.43 # Exact a, adot, b, bdot, g, gdot: 1.456152E-05 2.148700E-02 -1.440259E-06 -2.709264E-03 2.380778E-02 2.555907E-03 # Covariance matrix: 3.4401E-13 2.5435E-13 1.4771E-16 -3.9438E-14 4.9788E-13 3.1868E-12 2.5435E-13 1.4709E-12 2.5823E-14 -2.1199E-13 1.1671E-12 1.9452E-11 1.4771E-16 2.5823E-14 1.4186E-13 -4.6685E-14 1.1758E-14 3.8697E-13 -3.9438E-14 -2.1199E-13 -4.6685E-14 8.3570E-14 -1.6545E-13 -2.9366E-12 4.9788E-13 1.1671E-12 1.1758E-14 -1.6545E-13 1.4171E-12 1.4403E-11 3.1868E-12 1.9452E-11 3.8697E-13 -2.9366E-12 1.4403E-11 2.7217E-10 # lat0 lon0 xBary yBary zBary JD0 -9.062547 8.396761 0.409760 -0.144063 -0.901785 2451429.011913 # Heliocentric elements and errors Epoch: 2451420.5000 = 1999/08/30 Mean Anomaly: 121.69045 +/- 0.218 Argument of Peri: 97.35818 +/- 0.208 Long of Asc Node: 137.45071 +/- 0.002 Inclination: 11.44880 +/- 0.000 Eccentricity: 0.13351583 +/- 0.0005 Semi-Major Axis: 39.67062986 +/- 0.0061 Time of Perihelion: 2420570.4353 +/- 54.8 Perihelion: 34.37397270 +/- 0.0201 Aphelion: 44.96728701 +/- 0.0206 Period (y) 249.8687 +/- 0.06 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 42.00498386 +/- 0.0021 Ecliptic Y 5.78749228 +/- 0.0003 Ecliptic Z -6.61606550 +/- 0.0003 Ecliptic XDOT -0.00012632 +/- 0.0000 Ecliptic YDOT 0.00248802 +/- 0.0000 Ecliptic ZDOT -0.00035391 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 42.91486990 +/- 0.0020 Geocenter to KBO 42.00307740 +/- 0.0021 # Hcoef: 7.59
The following table shows the complete astrometric record for 99RK215. 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 (99RK215) followed by the observatory code and reference code for the source of the astrometry.
1999 09 07.51117 00 45 08.61 -04 59 59.6 24.3R 99RK215 568 Ca8547 1999 09 07.55015 00 45 08.46 -05 00 00.8 23.4R 99RK215 568 Ca8547 1999 09 07.59142 00 45 08.28 -05 00 01.5 23.1R 99RK215 568 Ca8547 1999 09 10.59454 00 44 56.64 -05 01 37.4 23.8R 99RK215 568 Ca8547 1999 09 10.60498 00 44 56.59 -05 01 37.9 23.4R 99RK215 568 Ca8547 1999 10 10.41986 00 42 48.82 -05 16 47.9 23.6R 99RK215 568 Ca8547 1999 10 10.46961 00 42 48.62 -05 16 49.3 23.6R 99RK215 568 Ca8547 1999 10 11.44638 00 42 44.33 -05 17 16.4 23.6R 99RK215 568 Ca8547 1999 10 11.49807 00 42 44.10 -05 17 17.7 23.5R 99RK215 568 Ca8547 1999 11 11.38953 00 40 41.23 -05 28 03.0 23.6R 99RK215 568 Ca8547 1999 11 11.44068 00 40 41.03 -05 28 03.6 24.2R 99RK215 568 Ca8547 2000 12 27.24300 00 44 08.009 -05 07 25.10 23.2R 99RK215 568 Cl2529 2000 12 28.25263 00 44 08.289 -05 07 10.60 23.1R 99RK215 568 Cl2529 2003 11 21.15416 00 59 05.71 -04 07 55.2 24.0R 99RK215 695 Cl2529 2003 11 21.20316 00 59 05.56 -04 07 55.7 99RK215 695 Cl2529
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 -0.06 0.00 -0.07 2 0.0001 -2.53 -0.02 -0.22 -0.05 3 0.0002 -5.28 ( -0.04) 0.20 ( 0.63) 4 0.0084 -202.95 0.10 -19.20 0.40 5 0.0085 -203.83 -0.08 -19.36 0.29 6 0.0901 -2316.92 -0.19 -102.39 0.07 7 0.0902 -2320.22 0.11 -102.50 -0.09 8 0.0929 -2389.80 0.01 -102.15 -0.45 9 0.0931 -2393.47 0.06 -101.99 -0.36 10 0.1776 -4334.79 0.17 27.40 -0.22 11 0.1778 -4337.77 -0.17 28.03 0.01 12 1.3052 -1007.81 -0.01 -51.79 0.43 13 1.3080 -998.24 0.10 -40.12 0.26 14 4.2044 12744.18 -0.02 -2108.51 -0.07 15 4.2045 12741.92 0.00 -2108.07 -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.
99RK215 quality flag:3 Type: 3:2E 3:2E 3:2E axisobj 39.647 39.665 39.629 ecceobj 0.133 0.134 0.133 incobj 11.453 11.453 11.453 qmin 32.595 32.584 32.616 qmax 46.749 46.795 46.723 amean 39.457 39.457 39.457 amin 39.067 39.073 39.058 amax 39.883 39.885 39.894 emean 0.154 0.155 0.153 emin 0.132 0.131 0.131 emax 0.173 0.174 0.173 imean 9.636 9.630 9.655 imin 8.873 8.909 8.873 imax 10.523 10.500 10.536 fracstop 1.000 1.000 1.000 cjmean 2.994 2.993 2.994 libcent 0 179.6 180.4 179.1 libamp 0 60.1 59.7 64.4 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 178.7 178.2 179.4 kozaiamp 180.0 180.0 180.0