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: 306792 # Created Sun Dec 22 02:07:01 2024 # Orbit generated by ELGB # -->Covariance matrix from a Bernstein fit # Fitting 30 observations of 30 # Arc: 8.24y # First observation: 2001/05/23 # Last observation: 2009/08/19 # Chi-squared of fit: 40.54 DOF: 54 RMS: 0.21 # Min/Max residuals: -0.43 0.87 # Exact a, adot, b, bdot, g, gdot: 1.540833E-05 2.862881E-02 4.206970E-06 7.934733E-03 2.797978E-02 -4.231911E-03 # Covariance matrix: 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 # lat0 lon0 xBary yBary zBary JD0 -1.992388 -118.481558 -0.009898 -0.035551 -1.018258 2452052.687403 # Heliocentric elements and errors Epoch: 2452052.5000 = 2001/05/23 Mean Anomaly: 302.86356 +/- 0.000 Argument of Peri: 66.28171 +/- 0.000 Long of Asc Node: 248.46292 +/- 0.000 Inclination: 15.66573 +/- 0.000 Eccentricity: 0.15418550 +/- 0.0000 Semi-Major Axis: 39.29817229 +/- 0.0000 Time of Perihelion: 2466333.7962 +/- 0.0 Perihelion: 33.23896403 +/- 0.0000 Aphelion: 45.35738054 +/- 0.0000 Period (y) 246.3580 +/- 0.00 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X -17.50652953 +/- 0.0000 Ecliptic Y -32.29069535 +/- 0.0000 Ecliptic Z -1.24241669 +/- 0.0000 Ecliptic XDOT 0.00263839 +/- 0.0000 Ecliptic YDOT -0.00099358 +/- 0.0000 Ecliptic ZDOT 0.00079054 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 36.75210726 +/- 0.0000 Geocenter to KBO 35.74022226 +/- 0.0000 # Hcoef: 6.99
The following table shows the complete astrometric record for 306792. 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 (306792) followed by the observatory code and reference code for the source of the astrometry.
2001 05 23.18666 15 55 51.94 -22 24 55.9 21.5R 306792 807 Ce6595 2001 05 23.25068 15 55 51.57 -22 24 54.5 306792 807 Ce6595 2001 06 12.20844 15 54 00.73 -22 17 46.5 22.2 306792 304 Ce6595 2001 06 12.28059 15 54 00.35 -22 17 45.3 306792 304 Ce6595 2001 08 19.02715 15 51 02.24 -22 00 59.5 21.5R 306792 807 Ce6595 2001 08 20.02430 15 51 03.07 -22 00 54.2 306792 807 Ce6595 2001 08 21.03187 15 51 04.05 -22 00 49.8 306792 807 Ce6595 2002 04 06.27613 16 07 06.54 -22 30 56.2 20.7R 306792 807 Cf4617 2002 04 06.40839 16 07 06.07 -22 30 54.5 306792 807 Cf4617 2002 05 12.03395 16 04 18.22 -22 21 29.3 306792 950 Cf4617 2002 05 12.07964 16 04 17.98 -22 21 28.6 306792 950 Cf4617 2002 05 12.12508 16 04 17.71 -22 21 27.7 306792 950 Cf4617 2002 05 13.04247 16 04 12.58 -22 21 09.8 306792 950 Cf4617 2002 05 13.11194 16 04 12.18 -22 21 08.5 306792 950 Cf4617 2002 07 06.22158 15 59 28.99 -22 03 17.1 23.4R 306792 695 Cf8904 2002 07 06.24780 15 59 28.89 -22 03 16.8 23.5R 306792 695 Cf8904 2002 07 06.27463 15 59 28.78 -22 03 16.3 23.3R 306792 695 Cf8904 2004 04 22.48664 16 20 47.56 -22 07 58.9 22.5R 306792 568 Ck9562 2004 04 22.53950 16 20 47.32 -22 07 58.0 306792 568 Ck9562 2004 06 19.23705 16 15 31.99 -21 50 53.9 22.8R 306792 688 Ck9810 2004 06 19.28440 16 15 31.81 -21 50 53.3 306792 688 Ck9810 2005 05 12.46319 16 26 37.54 -21 51 18.7 23.2g 306792 568 C~0UqF 2005 05 12.48946 16 26 37.39 -21 51 18.3 23.1g 306792 568 C~0UqF 2005 05 12.52077 16 26 37.22 -21 51 17.8 23.3g 306792 568 C~0UqF 2005 05 13.54546 16 26 31.52 -21 51 00.2 23.4g 306792 568 C~0UqF 2005 07 31.26875 16 20 17.51 -21 30 26.3 22.2i 306792 568 C~0UqF 2005 07 31.31382 16 20 17.42 -21 30 25.9 22.3i 306792 568 C~0UqF 2005 07 31.35856 16 20 17.32 -21 30 25.4 22.2i 306792 568 C~0UqF 2009 08 18.18138 16 49 42.71 -20 34 37.1 306792 675 C~0UqF 2009 08 19.16372 16 49 41.85 -20 34 33.7 306792 675 C~0UqF
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 0.18 0.00 0.02
2 0.0002 0.00 0.21 0.00 0.06
3 0.0548 0.00 -0.36 0.00 0.38
4 0.0550 0.00 -0.30 0.00 0.02
5 0.2405 0.00 0.17 0.00 -0.31
6 0.2432 0.00 -0.12 0.00 -0.03
7 0.2460 0.00 -0.01 0.00 -0.35
8 0.8709 0.00 -0.03 0.00 0.03
9 0.8712 0.00 -0.08 0.00 0.19
10 0.9688 0.00 -0.08 0.00 -0.06
11 0.9689 0.00 0.22 0.00 -0.24
12 0.9690 0.00 0.05 0.00 -0.22
13 0.9715 0.00 0.13 0.00 -0.02
14 0.9717 0.00 0.09 0.00 -0.06
15 1.1199 0.00 -0.02 0.00 0.08
16 1.1199 0.00 0.05 0.00 -0.08
17 1.1200 0.00 -0.00 0.00 -0.05
18 2.9166 0.00 0.17 0.00 0.15
19 2.9168 0.00 0.25 0.00 0.28
20 3.0747 0.00 -0.22 0.00 0.13
21 3.0749 0.00 0.87 0.00 -0.13
22 3.9706 0.00 -0.12 0.00 0.09
23 3.9707 0.00 -0.15 0.00 0.04
24 3.9708 0.00 -0.06 0.00 0.01
25 3.9736 0.00 -0.43 0.00 0.24
26 4.1891 0.00 -0.23 0.00 0.02
27 4.1893 0.00 -0.11 0.00 -0.02
28 4.1894 0.00 -0.15 0.00 0.03
29 8.2382 0.00 0.12 0.00 -0.31
30 8.2409 0.00 0.07 0.00 0.03
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.
306792 quality flag:3 Type: 3:2E 3:2E 3:2E axisobj 39.323 39.323 39.324 ecceobj 0.156 0.156 0.156 incobj 15.659 15.659 15.659 qmin 31.930 31.930 31.930 qmax 47.396 47.400 47.389 amean 39.457 39.457 39.457 amin 39.060 39.069 39.056 amax 39.908 39.908 39.909 emean 0.163 0.163 0.163 emin 0.133 0.133 0.133 emax 0.189 0.189 0.189 imean 16.803 16.804 16.803 imin 16.115 16.098 16.118 imax 17.576 17.576 17.576 excite_mean 0.332 0.332 0.332 fracstop 1.000 1.000 1.000 cjmean 2.925 2.925 2.925 libcent 0 179.7 179.8 179.3 libamp 0 75.8 76.0 75.5 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 181.7 181.8 181.7 kozaiamp 180.0 180.0 180.0