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: 19QE111 # Created Mon Apr 28 01:11:16 2025 # Orbit generated from Bernstein formalism # Fitting 10 observations of 10 # Arc: 2.09y # First observation: 2019/08/29 # Last observation: 2021/10/02 Preliminary a, adot, b, bdot, g, gdot: 0.000012 0.020223 -0.000000 0.000018 0.022324 0.000000 # Chi-squared of fit: 0.95 DOF: 14 RMS: 0.05 # Min/Max residuals: -0.14 0.10 # Exact a, adot, b, bdot, g, gdot: 1.470620E-05 2.020829E-02 -2.051627E-07 1.791378E-05 2.227213E-02 1.234168E-05 # Covariance matrix: 6.9315E-13 5.8433E-13 -9.4307E-16 6.4332E-16 1.5000E-12 1.9185E-11 5.8433E-13 4.4027E-12 -2.2957E-15 4.0624E-15 4.9625E-12 1.1419E-10 -9.4307E-16 -2.2957E-15 3.5057E-13 -1.9035E-13 -4.2328E-15 -5.7485E-14 6.4332E-16 4.0624E-15 -1.9035E-13 1.7797E-13 4.4729E-15 1.1069E-13 1.5000E-12 4.9625E-12 -4.2328E-15 4.4729E-15 7.5650E-12 1.2897E-10 1.9185E-11 1.1419E-10 -5.7485E-14 1.1069E-13 1.2897E-10 3.1017E-09 # lat0 lon0 xBary yBary zBary JD0 -1.933055 -9.702332 0.253928 -0.032777 -0.971305 2458724.712719 # Heliocentric elements and errors Epoch: 2458720.5000 = 2019/08/25 Mean Anomaly: 182.47789 +/- 3.616 Argument of Peri: 88.94884 +/- 3.615 Long of Asc Node: 78.72869 +/- 0.036 Inclination: 1.89237 +/- 0.000 Eccentricity: 0.04179825 +/- 0.0002 Semi-Major Axis: 44.03617369 +/- 0.0131 Time of Perihelion: 2511354.0599 +/- 1071.9 Perihelion: 42.19553854 +/- 0.0150 Aphelion: 45.87680883 +/- 0.0159 Period (y) 292.2285 +/- 0.13 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 45.14978811 +/- 0.0055 Ecliptic Y -7.98356005 +/- 0.0010 Ecliptic Z -1.51453677 +/- 0.0002 Ecliptic XDOT 0.00042868 +/- 0.0000 Ecliptic YDOT 0.00244892 +/- 0.0000 Ecliptic ZDOT 0.00000192 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 45.87520484 +/- 0.0054 Geocenter to KBO 44.89916548 +/- 0.0055 # Hcoef: 8.55
The following table shows the complete astrometric record for 19QE111. 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 (19QE111) followed by the observatory code and reference code for the source of the astrometry.
2019 08 29.211918 23 27 23.531 -05 37 15.53 25.1r 19QE111 W84 C~7XLi 2019 08 29.387113 23 27 22.841 -05 37 20.19 25.1r 19QE111 W84 C~7XLi 2019 09 27.014583 23 25 25.908 -05 49 46.85 24.9r 19QE111 W84 C~7XLi 2019 09 27.176040 23 25 25.247 -05 49 51.03 24.9r 19QE111 W84 C~7XLi 2020 10 16.001792 23 28 28.552 -05 29 51.78 25.3r 19QE111 W84 C~7XLi 2020 10 16.175804 23 28 27.950 -05 29 55.24 25.3r 19QE111 W84 C~7XLi 2021 09 13.055538 23 34 55.205 -04 48 48.27 25.0r 19QE111 W84 C~7XLi 2021 09 13.174687 23 34 54.703 -04 48 51.50 25.0r 19QE111 W84 C~7XLi 2021 10 02.027293 23 33 37.888 -04 56 57.54 25.0r 19QE111 W84 C~7XLi 2021 10 02.165093 23 33 37.333 -04 57 00.83 25.0r 19QE111 W84 C~7XLi
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 -0.07 0.00 0.04
2 0.0005 -11.30 0.07 -0.23 -0.14
3 0.0789 -1909.61 0.05 0.29 0.10
4 0.0793 -1920.33 -0.05 0.33 -0.02
5 1.1329 1067.06 -0.03 25.16 -0.00
6 1.1334 1057.43 0.03 25.53 0.04
7 2.0420 7349.80 0.04 2.67 -0.00
8 2.0423 7341.62 -0.03 2.68 -0.03
9 2.0940 6093.64 -0.00 11.69 -0.04
10 2.0943 6084.71 -0.01 11.96 0.05
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.
19QE111 quality flag:3 Type: CLASSICAL CLASSICAL CLASSICAL axisobj 44.084 44.117 44.050 ecceobj 0.040 0.040 0.040 incobj 1.894 1.894 1.894 qmin 41.072 41.098 41.052 qmax 47.108 47.089 47.040 amean 43.973 44.008 43.940 amin 43.632 43.667 43.601 amax 44.336 44.372 44.295 emean 0.046 0.047 0.046 emin 0.030 0.031 0.030 emax 0.063 0.062 0.062 imean 0.711 0.708 0.714 imin 0.252 0.235 0.264 imax 1.064 1.062 1.068 excite_mean 0.048 0.049 0.048 fracstop 1.000 1.000 1.000 cjmean 3.098 3.099 3.098 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 170.7 169.0 171.9 kozaiamp 180.0 179.9 180.0