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: 15QZ33 # Created Sat Apr 27 01:17:25 2024 # Orbit generated from Bernstein formalism # Fitting 16 observations of 16 # Arc: 3.93y # First observation: 2014/12/26 # Last observation: 2018/12/02 Preliminary a, adot, b, bdot, g, gdot: 0.000220 0.020975 0.000046 -0.000163 0.022308 0.000000 # Chi-squared of fit: 7.95 DOF: 26 RMS: 0.12 # Min/Max residuals: -0.24 0.31 # Exact a, adot, b, bdot, g, gdot: 1.581877E-05 2.122928E-02 9.728915E-07 -1.927272E-04 2.189541E-02 5.697202E-03 # Covariance matrix: 1.0558E-12 -1.1432E-12 -1.0390E-13 6.6837E-14 -4.1435E-13 -1.1332E-11 -1.1432E-12 1.7761E-12 5.7906E-14 -1.1520E-13 3.0868E-13 1.9060E-11 -1.0390E-13 5.7906E-14 3.1479E-13 -1.2411E-13 1.1016E-13 5.9300E-13 6.6837E-14 -1.1520E-13 -1.2411E-13 8.4575E-14 -1.7405E-14 -1.2941E-12 -4.1435E-13 3.0868E-13 1.1016E-13 -1.7405E-14 3.8601E-13 3.2751E-12 -1.1332E-11 1.9060E-11 5.9300E-13 -1.2941E-12 3.2751E-12 2.1389E-10 # lat0 lon0 xBary yBary zBary JD0 -29.116234 10.632119 -0.975662 -0.056001 -0.100966 2457017.631328 # Heliocentric elements and errors Epoch: 2457010.5000 = 2014/12/19 Mean Anomaly: 43.36908 +/- 0.044 Argument of Peri: 193.49261 +/- 0.024 Long of Asc Node: 101.85268 +/- 0.002 Inclination: 29.04037 +/- 0.000 Eccentricity: 0.32023328 +/- 0.0007 Semi-Major Axis: 54.78001844 +/- 0.0330 Time of Perihelion: 2439169.9016 +/- 8.0 Perihelion: 37.23763358 +/- 0.0467 Aphelion: 72.32240329 +/- 0.0598 Period (y) 405.4539 +/- 0.37 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 39.14587682 +/- 0.0011 Ecliptic Y 8.34352185 +/- 0.0002 Ecliptic Z -22.22308796 +/- 0.0006 Ecliptic XDOT 0.00010638 +/- 0.0000 Ecliptic YDOT 0.00271645 +/- 0.0000 Ecliptic ZDOT -0.00036759 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 45.78077836 +/- 0.0010 Geocenter to KBO 45.67167921 +/- 0.0013 # Hcoef: 6.84
The following table shows the complete astrometric record for 15QZ33. 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 (15QZ33) followed by the observatory code and reference code for the source of the astrometry.
2014 12 26.13055 01 26 44.482 -22 28 37.61 23.3i 15QZ33 W84 C~55Wd 2015 08 24.38018 01 38 40.077 -21 36 50.99 23.8r 15QZ33 W84 C~55Wd 2015 08 24.38155 01 38 40.075 -21 36 51.08 23.9i 15QZ33 W84 C~55Wd 2015 11 06.13569 01 33 54.404 -22 11 43.95 23.5r 15QZ33 W84 C~55Wd 2015 11 06.13841 01 33 54.381 -22 11 43.88 23.2i 15QZ33 W84 C~55Wd 2015 11 07.14990 01 33 50.141 -22 11 48.26 23.9g 15QZ33 W84 C~55Wd 2015 11 07.15128 01 33 50.115 -22 11 48.24 23.5i 15QZ33 W84 C~55Wd 2015 11 15.21470 01 33 17.293 -22 11 51.67 23.9r 15QZ33 W84 C~55Wd 2015 11 18.15552 01 33 06.004 -22 11 39.45 23.5i 15QZ33 W84 C~55Wd 2016 10 05.28499 01 40 53.435 -21 31 35.00 22.9i 15QZ33 W84 C~55Wd 2016 10 28.28554 01 39 11.380 -21 39 22.34 23.1g 15QZ33 W84 C~55Wd 2017 09 26.27128 01 46 07.039 -20 55 15.15 23.9r 15QZ33 W84 C~55Wd 2017 09 26.27266 01 46 07.021 -20 55 15.24 24.2g 15QZ33 W84 C~55Wd 2017 11 23.20927 01 42 02.983 -21 08 55.74 23.3r 15QZ33 W84 C~55Wd 2017 12 07.13027 01 41 18.876 -21 05 41.15 22.5z 15QZ33 W84 C~55Wd 2018 12 02.09146 01 46 04.579 -20 36 08.83 23.7g 15QZ33 W84 C~55Wd
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 -0.10 0.00 -0.23
2 0.6605 10323.44 0.00 -1497.25 0.15
3 0.6605 10323.38 0.00 -1497.32 0.11
4 0.8624 5825.62 -0.02 -1640.42 0.02
5 0.8624 5825.36 -0.12 -1640.22 0.16
6 0.8652 5770.36 0.31 -1618.60 -0.13
7 0.8652 5770.04 0.07 -1618.43 0.01
8 0.8873 5357.40 0.03 -1423.88 0.14
9 0.8953 5221.24 -0.04 -1344.97 -0.04
10 1.7773 12137.18 -0.16 -2037.97 -0.13
11 1.8403 10649.31 -0.10 -1826.12 -0.01
12 2.7519 17059.06 0.18 -2053.15 0.07
13 2.7519 17058.79 0.00 -2053.11 0.11
14 2.9106 13617.58 0.10 -1251.40 -0.11
15 2.9487 13149.41 -0.12 -801.53 -0.24
16 3.9342 17548.48 -0.05 -1010.96 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.
15QZ33 quality flag:3 Type: SCATNEAR SCATNEAR SCATNEAR axisobj 55.444 55.543 55.348 ecceobj 0.326 0.328 0.324 incobj 29.047 29.047 29.047 qmin 35.438 35.012 35.570 qmax 75.740 77.420 75.242 amean 55.108 55.540 54.998 amin 54.519 54.640 54.419 amax 55.906 56.523 55.716 emean 0.336 0.339 0.331 emin 0.315 0.312 0.311 emax 0.355 0.372 0.351 imean 26.834 26.928 26.986 imin 26.305 25.732 26.452 imax 27.570 27.694 27.699 excite_mean 0.563 0.566 0.562 fracstop 1.000 1.000 1.000 cjmean 2.821 2.820 2.821 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 182.5 188.6 191.3 kozaiamp 180.0 180.0 180.0