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: 99CQ153 # Created Wed Dec 25 02:07:56 2024 # Orbit generated by ELGB # -->Covariance matrix from a Bernstein fit # Fitting 18 observations of 18 # Arc: 16.12y # First observation: 1999/02/11 # Last observation: 2015/03/25 # Chi-squared of fit: 8.35 DOF: 30 RMS: 0.12 # Min/Max residuals: -0.28 0.26 # Exact a, adot, b, bdot, g, gdot: 1.601593E-05 2.239536E-02 8.986869E-07 4.743301E-05 2.314395E-02 -7.626974E-04 # Covariance matrix: 7.3903E-13 1.9363E-12 -1.4494E-16 4.2337E-15 1.7504E-12 5.2316E-12 1.9363E-12 6.7881E-11 -5.7653E-15 1.5002E-13 1.8509E-11 1.8409E-10 -1.4494E-16 -5.7653E-15 3.6901E-13 -2.2942E-14 -1.4888E-15 -1.5641E-14 4.2337E-15 1.5002E-13 -2.2942E-14 2.1049E-15 4.0534E-14 4.0688E-13 1.7504E-12 1.8509E-11 -1.4888E-15 4.0534E-14 9.7652E-12 4.9881E-11 5.2316E-12 1.8409E-10 -1.5641E-14 4.0688E-13 4.9881E-11 4.9927E-10 # lat0 lon0 xBary yBary zBary JD0 -0.085839 157.652706 0.258891 -0.001662 -0.959202 2451220.929613 # Heliocentric elements and errors Epoch: 2451220.5000 = 1999/02/11 Mean Anomaly: 320.25564 +/- 0.962 Argument of Peri: 9.52152 +/- 1.100 Long of Asc Node: 191.95329 +/- 0.015 Inclination: 0.14766 +/- 0.000 Eccentricity: 0.05706472 +/- 0.0004 Semi-Major Axis: 46.11813893 +/- 0.0235 Time of Perihelion: 2463849.7959 +/- 315.4 Perihelion: 43.48642009 +/- 0.0299 Aphelion: 48.74985777 +/- 0.0319 Period (y) 313.1958 +/- 0.24 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X -40.74341604 +/- 0.0054 Ecliptic Y 17.03204407 +/- 0.0022 Ecliptic Z -0.06469107 +/- 0.0000 Ecliptic XDOT -0.00092557 +/- 0.0000 Ecliptic YDOT -0.00247561 +/- 0.0000 Ecliptic ZDOT 0.00000575 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 44.16019562 +/- 0.0050 Geocenter to KBO 43.20788742 +/- 0.0058 # Hcoef: 8.22
The following table shows the complete astrometric record for 99CQ153. 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 (99CQ153) followed by the observatory code and reference code for the source of the astrometry.
1999 02 11.42887 10 37 12.63 +08 37 09.4 23.7R 99CQ153 568 Ca4208 1999 02 11.50747 10 37 12.31 +08 37 11.2 23.7R 99CQ153 568 Ca4208 1999 03 13.45564 10 35 02.20 +08 50 04.2 23.7R 99CQ153 568 Ca4208 1999 03 13.47883 10 35 02.08 +08 50 04.9 23.7R 99CQ153 568 Ca4208 2015 03 18.485943 11 51 46.351 +00 51 05.05 24.5r 99CQ153 568 C~2Re6 2015 03 18.514284 11 51 46.223 +00 51 05.84 24.3r 99CQ153 568 C~2Re6 2015 03 18.544855 11 51 46.093 +00 51 06.75 24.5r 99CQ153 568 C~2Re6 2015 03 18.547005 11 51 46.081 +00 51 06.72 24.6r 99CQ153 568 C~2Re6 2015 03 18.573065 11 51 45.969 +00 51 07.51 24.5r 99CQ153 568 C~2Re6 2015 03 20.433651 11 51 37.950 +00 51 59.81 23.9i 99CQ153 568 C~2Re6 2015 03 20.471724 11 51 37.782 +00 52 00.87 23.8i 99CQ153 568 C~2Re6 2015 03 20.510690 11 51 37.613 +00 52 01.99 24.1i 99CQ153 568 C~2Re6 2015 03 20.549193 11 51 37.445 +00 52 03.07 24.1i 99CQ153 568 C~2Re6 2015 03 20.551940 11 51 37.426 +00 52 03.18 24.1i 99CQ153 568 C~2Re6 2015 03 25.46334 11 51 16.32 +00 54 20.8 26.1g 99CQ153 T09 C~8SDW 2015 03 25.49141 11 51 16.18 +00 54 21.4 25.8g 99CQ153 T09 C~8SDW 2015 03 25.52174 11 51 16.07 +00 54 22.3 25.7g 99CQ153 T09 C~8SDW 2015 03 25.54970 11 51 15.94 +00 54 22.9 25.9g 99CQ153 T09 C~8SDW
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 -0.21 0.00 -0.11
2 0.0002 0.00 0.06 0.00 -0.28
3 0.0822 0.00 0.24 0.00 0.13
4 0.0823 0.00 -0.07 0.00 0.25
5 16.0960 0.00 -0.03 0.00 -0.09
6 16.0961 0.00 -0.08 0.00 -0.10
7 16.0961 0.00 -0.02 0.00 -0.04
8 16.0961 0.00 -0.06 0.00 -0.13
9 16.0962 0.00 -0.03 0.00 -0.08
10 16.1013 0.00 -0.01 0.00 -0.01
11 16.1014 0.00 -0.02 0.00 -0.01
12 16.1015 0.00 0.02 0.00 0.01
13 16.1016 0.00 0.03 0.00 0.01
14 16.1016 0.00 -0.08 0.00 0.05
15 16.1151 0.00 0.10 0.00 0.26
16 16.1152 0.00 -0.16 0.00 0.08
17 16.1152 0.00 0.17 0.00 0.14
18 16.1153 0.00 0.04 0.00 -0.04
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.
99CQ153 quality flag:3 Type: CLASSICAL CLASSICAL CLASSICAL axisobj 46.223 46.223 46.223 ecceobj 0.058 0.058 0.058 incobj 0.149 0.149 0.149 qmin 42.891 42.917 42.875 qmax 50.182 50.187 50.212 amean 46.437 46.437 46.437 amin 46.066 46.062 46.064 amax 46.829 46.828 46.830 emean 0.060 0.060 0.060 emin 0.047 0.047 0.047 emax 0.073 0.072 0.073 imean 1.705 1.705 1.705 imin 1.346 1.346 1.346 imax 2.034 2.035 2.034 excite_mean 0.067 0.067 0.067 fracstop 1.000 1.000 1.000 cjmean 3.126 3.126 3.126 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 159.1 159.1 159.0 kozaiamp 180.0 180.0 180.0