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: 19QE112 # Created Sun Nov 24 02:10:58 2024 # Orbit generated from Bernstein formalism # Fitting 22 observations of 22 # Arc: 2.98y # First observation: 2019/08/30 # Last observation: 2022/08/24 Preliminary a, adot, b, bdot, g, gdot: -0.000007 0.021475 0.000000 0.001194 0.022868 0.000000 # Chi-squared of fit: 3.16 DOF: 38 RMS: 0.07 # Min/Max residuals: -0.21 0.14 # Exact a, adot, b, bdot, g, gdot: 1.490454E-05 2.154196E-02 8.877742E-07 1.198808E-03 2.294472E-02 1.392202E-03 # Covariance matrix: 5.7525E-13 6.7448E-14 -7.2204E-15 1.7013E-14 8.2583E-13 4.3830E-12 6.7448E-14 1.1399E-12 -2.8295E-14 7.2065E-14 1.5454E-12 1.8626E-11 -7.2204E-15 -2.8295E-14 2.6653E-13 -1.0415E-13 -4.6013E-14 -4.9937E-13 1.7013E-14 7.2065E-14 -1.0415E-13 5.7486E-14 1.1435E-13 1.2647E-12 8.2583E-13 1.5454E-12 -4.6013E-14 1.1435E-13 3.4045E-12 2.9525E-11 4.3830E-12 1.8626E-11 -4.9937E-13 1.2647E-12 2.9525E-11 3.2680E-10 # lat0 lon0 xBary yBary zBary JD0 -1.708670 -7.653815 0.272100 -0.028821 -0.966355 2458725.713221 # Heliocentric elements and errors Epoch: 2458720.5000 = 2019/08/25 Mean Anomaly: 82.91092 +/- 0.102 Argument of Peri: 242.20747 +/- 0.155 Long of Asc Node: 19.76545 +/- 0.004 Inclination: 3.58265 +/- 0.001 Eccentricity: 0.06148006 +/- 0.0008 Semi-Major Axis: 44.72454754 +/- 0.0081 Time of Perihelion: 2433559.5749 +/- 30.0 Perihelion: 41.97487989 +/- 0.0378 Aphelion: 47.47421519 +/- 0.0380 Period (y) 299.1074 +/- 0.08 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 44.10030046 +/- 0.0035 Ecliptic Y -6.20752123 +/- 0.0005 Ecliptic Z -1.29949914 +/- 0.0001 Ecliptic XDOT 0.00051961 +/- 0.0000 Ecliptic YDOT 0.00252547 +/- 0.0000 Ecliptic ZDOT 0.00013780 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 44.55399554 +/- 0.0034 Geocenter to KBO 43.58302061 +/- 0.0035 # Hcoef: 7.25
The following table shows the complete astrometric record for 19QE112. 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 (19QE112) followed by the observatory code and reference code for the source of the astrometry.
2019 08 30.212420 23 34 35.479 -04 36 23.47 23.3r 19QE112 W84 C~7XLk 2019 08 30.387214 23 34 34.762 -04 36 27.99 23.3r 19QE112 W84 C~7XLk 2019 09 28.012277 23 32 34.828 -04 48 59.72 23.2r 19QE112 W84 C~7XLk 2019 09 28.177548 23 32 34.127 -04 49 03.80 23.2r 19QE112 W84 C~7XLk 2020 10 18.01513 23 35 41.06 -04 23 56.5 24.1V 19QE112 W84 C~7XLk 2020 10 18.07030 23 35 40.87 -04 23 57.6 19QE112 W84 C~7XLk 2020 10 18.09799 23 35 40.77 -04 23 58.1 19QE112 W84 C~7XLk 2020 10 18.15327 23 35 40.57 -04 23 59.2 19QE112 W84 C~7XLk 2021 09 09.073508 23 42 45.072 -03 34 37.46 23.1r 19QE112 W84 C~7XLk 2021 09 09.192572 23 42 44.560 -03 34 40.60 23.1r 19QE112 W84 C~7XLk 2021 10 06.002765 23 40 52.786 -03 46 16.78 23.6r 19QE112 W84 C~7XLk 2021 10 06.167954 23 40 52.112 -03 46 20.79 23.6r 19QE112 W84 C~7XLk 2022 08 24.22448 23 48 13.84 -02 54 34.2 24.3V 19QE112 W84 C~7XLk 2022 08 24.27272 23 48 13.64 -02 54 35.5 24.1V 19QE112 W84 C~7XLk 2022 08 24.29691 23 48 13.56 -02 54 35.9 24.5V 19QE112 W84 C~7XLk 2022 08 24.30727 23 48 13.53 -02 54 36.3 24.0V 19QE112 W84 C~7XLk 2022 08 24.32105 23 48 13.47 -02 54 36.7 24.2V 19QE112 W84 C~7XLk 2022 08 24.33136 23 48 13.43 -02 54 36.9 24.1V 19QE112 W84 C~7XLk 2022 08 24.34509 23 48 13.38 -02 54 37.2 23.8V 19QE112 W84 C~7XLk 2022 08 24.37953 23 48 13.25 -02 54 37.9 23.7V 19QE112 W84 C~7XLk 2022 08 24.39332 23 48 13.20 -02 54 38.4 23.9V 19QE112 W84 C~7XLk 2022 08 24.40369 23 48 13.15 -02 54 38.5 23.9V 19QE112 W84 C~7XLk
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 -0.01 0.00 -0.01
2 0.0005 -11.63 -0.01 0.09 -0.01
3 0.0788 -1955.75 0.04 18.08 -0.10
4 0.0793 -1966.99 -0.00 18.47 0.03
5 1.1357 1196.22 -0.08 297.97 0.02
6 1.1358 1193.18 0.02 298.09 0.01
7 1.1359 1191.60 0.03 298.22 0.08
8 1.1360 1188.42 -0.00 298.39 0.12
9 2.0284 8198.56 0.06 496.09 -0.09
10 2.0287 8190.26 -0.04 496.26 -0.02
11 2.1021 6375.96 0.04 522.66 -0.05
12 2.1025 6365.10 -0.03 522.99 -0.03
13 2.9843 13687.79 0.08 739.09 0.02
14 2.9844 13684.51 -0.21 739.10 0.00
15 2.9845 13683.24 0.03 739.21 0.11
16 2.9845 13682.67 0.10 739.02 -0.08
17 2.9846 13681.68 -0.04 739.01 -0.10
18 2.9846 13681.05 -0.03 739.07 -0.05
19 2.9846 13680.24 0.01 739.09 -0.03
20 2.9847 13678.16 0.07 739.23 0.10
21 2.9848 13677.27 0.03 739.07 -0.07
22 2.9848 13676.54 -0.06 739.27 0.14
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.
19QE112 quality flag:3 Type: CLASSICAL CLASSICAL CLASSICAL axisobj 44.762 44.786 44.739 ecceobj 0.057 0.057 0.058 incobj 3.578 3.578 3.578 qmin 41.470 41.554 41.480 qmax 48.004 48.015 47.994 amean 44.646 44.670 44.623 amin 44.296 44.313 44.275 amax 45.014 45.035 44.993 emean 0.053 0.053 0.054 emin 0.039 0.038 0.039 emax 0.067 0.066 0.067 imean 3.504 3.505 3.504 imin 2.922 2.929 2.915 imax 3.961 3.962 3.963 excite_mean 0.081 0.081 0.081 fracstop 1.000 1.000 1.000 cjmean 3.101 3.102 3.101 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 178.9 178.6 178.8 kozaiamp 180.0 180.0 179.9