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: 19QH111 # Created Mon Apr 28 01:11:16 2025 # Orbit generated from Bernstein formalism # Fitting 8 observations of 8 # Arc: 2.10y # First observation: 2019/08/30 # Last observation: 2021/10/06 Preliminary a, adot, b, bdot, g, gdot: -0.000004 0.019665 0.000000 0.000778 0.021931 0.000000 # Chi-squared of fit: 10.62 DOF: 10 RMS: 0.20 # Min/Max residuals: -0.34 0.41 # Exact a, adot, b, bdot, g, gdot: 1.453162E-05 1.970583E-02 7.938506E-07 7.810166E-04 2.196070E-02 1.220849E-03 # Covariance matrix: 7.3943E-13 6.0103E-13 -3.8514E-15 2.5324E-14 1.6396E-12 1.6829E-11 6.0103E-13 4.4243E-12 -2.3879E-14 1.8524E-13 5.0181E-12 1.1807E-10 -3.8514E-15 -2.3879E-14 3.5404E-13 -2.0643E-13 -2.6479E-14 -6.9490E-13 2.5324E-14 1.8524E-13 -2.0643E-13 2.5716E-13 1.9212E-13 5.5090E-12 1.6396E-12 5.0181E-12 -2.6479E-14 1.9212E-13 7.9871E-12 1.2447E-10 1.6829E-11 1.1807E-10 -6.9490E-13 5.5090E-12 1.2447E-10 3.4936E-09 # lat0 lon0 xBary yBary zBary JD0 -2.293883 -7.421634 0.276016 -0.038645 -0.964901 2458725.713221 # Heliocentric elements and errors Epoch: 2458720.5000 = 2019/08/25 Mean Anomaly: 123.69204 +/- 1.420 Argument of Peri: 184.66466 +/- 1.404 Long of Asc Node: 37.11882 +/- 0.018 Inclination: 3.18086 +/- 0.001 Eccentricity: 0.07399089 +/- 0.0022 Semi-Major Axis: 44.51882690 +/- 0.0150 Time of Perihelion: 2421442.4461 +/- 427.4 Perihelion: 41.22483930 +/- 0.0987 Aphelion: 47.81281450 +/- 0.0991 Period (y) 297.0460 +/- 0.15 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 46.04299860 +/- 0.0058 Ecliptic Y -6.28254306 +/- 0.0008 Ecliptic Z -1.82254428 +/- 0.0002 Ecliptic XDOT 0.00048047 +/- 0.0000 Ecliptic YDOT 0.00241659 +/- 0.0000 Ecliptic ZDOT 0.00009097 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 46.50537318 +/- 0.0057 Geocenter to KBO 45.53588926 +/- 0.0059 # Hcoef: 9.42
The following table shows the complete astrometric record for 19QH111. 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 (19QH111) followed by the observatory code and reference code for the source of the astrometry.
2019 08 30.212420 23 36 22.585 -05 03 07.66 25.9r 19QH111 W84 C~7XLi 2019 08 30.387214 23 36 21.900 -05 03 11.89 25.9r 19QH111 W84 C~7XLi 2019 09 28.012277 23 34 26.334 -05 15 24.08 26.0r 19QH111 W84 C~7XLi 2019 09 28.177548 23 34 25.652 -05 15 28.60 26.0r 19QH111 W84 C~7XLi 2020 10 18.012125 23 37 14.324 -04 53 50.72 26.0r 19QH111 W84 C~7XLi 2020 10 18.176134 23 37 13.724 -04 53 53.43 26.0r 19QH111 W84 C~7XLi 2021 10 06.002765 23 42 03.950 -04 20 06.63 26.1r 19QH111 W84 C~7XLi 2021 10 06.167954 23 42 03.265 -04 20 10.88 26.1r 19QH111 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 -0.05
2 0.0005 -11.07 0.06 0.17 0.12
3 0.0788 -1886.42 0.17 10.77 0.11
4 0.0793 -1897.56 -0.16 10.65 -0.26
5 1.1357 930.54 0.13 205.10 -0.25
6 1.1361 921.23 -0.13 206.17 0.41
7 2.1021 5709.98 0.34 343.38 0.02
8 2.1025 5698.89 -0.34 343.56 -0.11
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.
19QH111 quality flag:3 Type: CLASSICAL CLASSICAL CLASSICAL axisobj 44.563 44.612 44.516 ecceobj 0.069 0.073 0.067 incobj 3.177 3.177 3.177 qmin 40.581 40.480 40.576 qmax 48.623 48.799 48.475 amean 44.453 44.505 44.406 amin 44.100 44.147 44.057 amax 44.836 44.878 44.781 emean 0.069 0.072 0.068 emin 0.054 0.056 0.052 emax 0.084 0.087 0.083 imean 2.634 2.627 2.632 imin 1.941 1.950 1.929 imax 3.187 3.167 3.194 excite_mean 0.083 0.086 0.082 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 179.7 181.2 179.2 kozaiamp 180.0 180.0 179.9