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: 19QO111 # Created Mon Apr 28 01:11:17 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: 0.000016 0.024096 0.000000 0.007784 0.023905 0.000000 # Chi-squared of fit: 0.25 DOF: 10 RMS: 0.03 # Min/Max residuals: -0.06 0.06 # Exact a, adot, b, bdot, g, gdot: 1.591915E-05 2.407912E-02 5.076369E-06 7.781812E-03 2.383233E-02 1.257262E-04 # Covariance matrix: 7.3743E-13 1.8155E-12 -2.7136E-14 7.3830E-13 1.8701E-12 4.5086E-11 1.8155E-12 2.1991E-11 -3.0785E-13 8.3036E-12 1.2444E-11 5.0700E-10 -2.7136E-14 -3.0785E-13 3.8564E-13 -3.0531E-13 -1.7081E-13 -7.1653E-12 7.3830E-13 8.3036E-12 -3.0531E-13 3.3431E-12 4.6341E-12 1.9321E-10 1.8701E-12 1.2444E-11 -1.7081E-13 4.6341E-12 1.0171E-11 2.8298E-10 4.5086E-11 5.0700E-10 -7.1653E-12 1.9321E-10 2.8298E-10 1.1797E-08 # lat0 lon0 xBary yBary zBary JD0 -2.989040 -7.421221 0.276023 -0.050349 -0.964359 2458725.713221 # Heliocentric elements and errors Epoch: 2458720.5000 = 2019/08/25 Mean Anomaly: 0.35236 +/- 0.812 Argument of Peri: 349.96969 +/- 1.325 Long of Asc Node: 1.17657 +/- 0.000 Inclination: 18.11238 +/- 0.001 Eccentricity: 0.22749844 +/- 0.0003 Semi-Major Axis: 55.57063087 +/- 0.0244 Time of Perihelion: 2458572.4014 +/- 341.3 Perihelion: 42.92839908 +/- 0.0266 Aphelion: 68.21286267 +/- 0.0353 Period (y) 414.2630 +/- 0.27 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 42.47649727 +/- 0.0056 Ecliptic Y -5.81765499 +/- 0.0007 Ecliptic Z -2.18777898 +/- 0.0003 Ecliptic XDOT 0.00042628 +/- 0.0000 Ecliptic YDOT 0.00273573 +/- 0.0000 Ecliptic ZDOT 0.00089178 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 42.92882839 +/- 0.0055 Geocenter to KBO 41.95980322 +/- 0.0056 # Hcoef: 7.36
The following table shows the complete astrometric record for 19QO111. 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 (19QO111) followed by the observatory code and reference code for the source of the astrometry.
2019 08 30.212420 23 37 29.067 -05 41 24.85 23.5r 19QO111 W84 C~7XLj 2019 08 30.387214 23 37 28.317 -05 41 28.99 23.5r 19QO111 W84 C~7XLj 2019 09 28.012277 23 35 22.497 -05 52 44.81 23.6r 19QO111 W84 C~7XLj 2019 09 28.177548 23 35 21.756 -05 52 48.48 23.6r 19QO111 W84 C~7XLj 2021 09 09.073508 23 45 30.104 -03 50 25.94 23.5r 19QO111 W84 C~7XLj 2021 09 09.192572 23 45 29.570 -03 50 28.79 23.5r 19QO111 W84 C~7XLj 2021 10 06.002765 23 43 31.988 -04 00 52.57 23.7r 19QO111 W84 C~7XLj 2021 10 06.167954 23 43 31.280 -04 00 56.14 23.7r 19QO111 W84 C~7XLj
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 0.02
2 0.0005 -11.92 -0.01 0.64 0.01
3 0.0788 -2003.80 0.06 123.57 -0.04
4 0.0793 -2015.40 -0.06 124.57 0.01
5 2.0284 9252.84 0.04 3251.32 -0.03
6 2.0287 9244.35 -0.04 3251.89 0.01
7 2.1021 7378.74 0.02 3381.03 0.02
8 2.1025 7367.59 -0.02 3381.98 -0.01
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.
19QO111 quality flag:3 Type: SCATNEAR SCATNEAR SCATNEAR axisobj 55.672 55.810 55.552 ecceobj 0.230 0.232 0.228 incobj 18.082 18.082 18.082 qmin 40.895 41.489 41.742 qmax 70.914 70.459 69.426 amean 55.445 55.629 55.244 amin 54.754 55.055 54.706 amax 56.286 56.289 55.875 emean 0.238 0.234 0.227 emin 0.216 0.219 0.213 emax 0.262 0.253 0.243 imean 18.125 18.324 18.332 imin 17.489 17.848 17.928 imax 18.712 18.743 18.702 excite_mean 0.392 0.392 0.388 fracstop 1.000 1.000 1.000 cjmean 3.048 3.049 3.049 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 181.4 165.6 174.6 kozaiamp 180.0 180.0 179.9