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: 19QA111 # Created Sun Apr 27 01:11:16 2025 # Orbit generated from Bernstein formalism # Fitting 10 observations of 10 # Arc: 2.11y # First observation: 2019/08/29 # Last observation: 2021/10/07 Preliminary a, adot, b, bdot, g, gdot: 0.000009 0.023240 -0.000000 0.001338 0.023903 0.000000 # Chi-squared of fit: 1.60 DOF: 14 RMS: 0.07 # Min/Max residuals: -0.14 0.09 # Exact a, adot, b, bdot, g, gdot: 1.499397E-05 2.328531E-02 8.382566E-07 1.342511E-03 2.389137E-02 1.403319E-03 # Covariance matrix: 6.2798E-13 5.4906E-13 -6.2304E-15 4.5120E-14 1.2758E-12 1.6204E-11 5.4906E-13 4.6900E-12 -3.8547E-14 2.9403E-13 4.9493E-12 1.0524E-10 -6.2304E-15 -3.8547E-14 3.5110E-13 -1.9335E-13 -4.2019E-14 -8.9993E-13 4.5120E-14 2.9403E-13 -1.9335E-13 1.9833E-13 3.1336E-13 6.8809E-12 1.2758E-12 4.9493E-12 -4.2019E-14 3.1336E-13 6.8116E-12 1.1232E-10 1.6204E-11 1.0524E-10 -8.9993E-13 6.8809E-12 1.1232E-10 2.4624E-09 # lat0 lon0 xBary yBary zBary JD0 -1.717002 -9.376552 0.259449 -0.029071 -0.969963 2458724.712719 # Heliocentric elements and errors Epoch: 2458720.5000 = 2019/08/25 Mean Anomaly: 51.83290 +/- 0.770 Argument of Peri: 274.47959 +/- 1.008 Long of Asc Node: 17.30459 +/- 0.007 Inclination: 3.68710 +/- 0.001 Eccentricity: 0.06936252 +/- 0.0018 Semi-Major Axis: 44.60056105 +/- 0.0106 Time of Perihelion: 2443056.1667 +/- 232.5 Perihelion: 41.50695356 +/- 0.0822 Aphelion: 47.69416854 +/- 0.0824 Period (y) 297.8645 +/- 0.11 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 42.19633910 +/- 0.0045 Ecliptic Y -7.23729218 +/- 0.0008 Ecliptic Z -1.25409267 +/- 0.0001 Ecliptic XDOT 0.00060635 +/- 0.0000 Ecliptic YDOT 0.00260638 +/- 0.0000 Ecliptic ZDOT 0.00014873 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 42.83085546 +/- 0.0044 Geocenter to KBO 41.85611287 +/- 0.0046 # Hcoef: 8.58
The following table shows the complete astrometric record for 19QA111. 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 (19QA111) followed by the observatory code and reference code for the source of the astrometry.
2019 08 29.211918 23 28 15.156 -05 17 38.75 24.7r 19QA111 W84 C~7XLi 2019 08 29.387113 23 28 14.401 -05 17 43.49 24.7r 19QA111 W84 C~7XLi 2019 09 27.014583 23 26 10.114 -05 30 35.36 24.8r 19QA111 W84 C~7XLi 2019 09 27.176040 23 26 09.405 -05 30 39.62 24.8r 19QA111 W84 C~7XLi 2020 10 16.001792 23 29 39.464 -05 02 37.36 24.8r 19QA111 W84 C~7XLi 2020 10 16.175804 23 29 38.809 -05 02 41.14 24.8r 19QA111 W84 C~7XLi 2021 09 05.096099 23 37 19.268 -04 09 10.41 24.9r 19QA111 W84 C~7XLi 2021 09 05.195929 23 37 18.827 -04 09 13.40 24.9r 19QA111 W84 C~7XLi 2021 10 07.004805 23 35 02.181 -04 23 19.00 24.8r 19QA111 W84 C~7XLi 2021 10 07.169933 23 35 01.498 -04 23 23.06 24.8r 19QA111 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 0.09 0.00 0.01
2 0.0005 -12.23 -0.05 0.09 -0.00
3 0.0789 -2022.31 0.06 21.38 0.02
4 0.0793 -2033.72 -0.09 21.63 -0.01
5 1.1329 1512.92 0.09 331.59 0.01
6 1.1334 1502.43 -0.12 331.98 -0.04
7 2.0202 9101.53 0.08 554.81 0.06
8 2.0205 9094.27 -0.13 554.69 -0.14
9 2.1076 6879.20 0.07 589.45 0.06
10 2.1080 6868.20 -0.00 589.77 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.
19QA111 quality flag:2 Type: CLASSICAL 9:5EEEE CLASSICAL axisobj 44.617 44.656 44.579 ecceobj 0.067 0.070 0.064 incobj 3.683 3.683 3.683 qmin 41.011 40.871 41.104 qmax 48.234 48.492 48.032 amean 44.511 44.554 44.471 amin 44.158 44.202 44.118 amax 44.875 44.932 44.849 emean 0.060 0.069 0.058 emin 0.045 0.057 0.043 emax 0.075 0.080 0.072 imean 3.617 3.599 3.618 imin 2.997 2.940 2.997 imax 4.142 4.055 4.133 excite_mean 0.087 0.093 0.086 fracstop 1.000 1.000 1.000 cjmean 3.098 3.098 3.098 libcent 0 -180.0 178.6 -180.0 libamp 0 -180.0 111.3 -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 181.6 180.4 181.4 kozaiamp 180.0 180.0 180.0