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: 19QF111 # Created Mon Apr 28 01:11:16 2025 # Orbit generated from Bernstein formalism # Fitting 8 observations of 8 # Arc: 2.11y # First observation: 2019/08/30 # Last observation: 2021/10/07 Preliminary a, adot, b, bdot, g, gdot: -0.000005 0.019653 -0.000000 0.000860 0.021938 0.000000 # Chi-squared of fit: 0.35 DOF: 10 RMS: 0.04 # Min/Max residuals: -0.09 0.06 # Exact a, adot, b, bdot, g, gdot: 1.415976E-05 1.970274E-02 5.767480E-07 8.635166E-04 2.197663E-02 1.343724E-03 # Covariance matrix: 7.3939E-13 5.5015E-13 -3.9265E-15 2.4548E-14 1.6283E-12 1.4845E-11 5.5015E-13 4.2741E-12 -2.6239E-14 1.9928E-13 4.8081E-12 1.1430E-10 -3.9265E-15 -2.6239E-14 3.5364E-13 -2.0633E-13 -2.8378E-14 -7.7185E-13 2.4548E-14 1.9928E-13 -2.0633E-13 2.5888E-13 1.9985E-13 6.0045E-12 1.6283E-12 4.8081E-12 -2.8378E-14 1.9985E-13 7.9025E-12 1.1690E-10 1.4845E-11 1.1430E-10 -7.7185E-13 6.0045E-12 1.1690E-10 3.4231E-09 # lat0 lon0 xBary yBary zBary JD0 -2.326120 -8.235926 0.262264 -0.039343 -0.968701 2458725.713221 # Heliocentric elements and errors Epoch: 2458720.5000 = 2019/08/25 Mean Anomaly: 121.12560 +/- 1.261 Argument of Peri: 188.99270 +/- 1.240 Long of Asc Node: 33.82295 +/- 0.016 Inclination: 3.37583 +/- 0.001 Eccentricity: 0.07983585 +/- 0.0022 Semi-Major Axis: 44.44625575 +/- 0.0166 Time of Perihelion: 2422305.1370 +/- 378.4 Perihelion: 40.89785108 +/- 0.0998 Aphelion: 47.99466043 +/- 0.1003 Period (y) 296.3200 +/- 0.17 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 45.92127094 +/- 0.0058 Ecliptic Y -6.91829849 +/- 0.0009 Ecliptic Z -1.84681431 +/- 0.0002 Ecliptic XDOT 0.00052994 +/- 0.0000 Ecliptic YDOT 0.00240525 +/- 0.0000 Ecliptic ZDOT 0.00010047 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 46.47619501 +/- 0.0057 Geocenter to KBO 45.50289017 +/- 0.0058 # Hcoef: 7.19
The following table shows the complete astrometric record for 19QF111. 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 (19QF111) followed by the observatory code and reference code for the source of the astrometry.
2019 08 30.212420 23 33 25.578 -05 24 13.31 23.8r 19QF111 W84 C~7XLi 2019 08 30.387214 23 33 24.884 -05 24 17.75 23.8r 19QF111 W84 C~7XLi 2019 09 28.012277 23 31 29.039 -05 36 27.33 23.7r 19QF111 W84 C~7XLi 2019 09 28.177548 23 31 28.362 -05 36 31.23 23.7r 19QF111 W84 C~7XLi 2020 10 16.001792 23 34 23.934 -05 13 55.54 23.8r 19QF111 W84 C~7XLi 2020 10 16.175804 23 34 23.316 -05 13 59.04 23.8r 19QF111 W84 C~7XLi 2021 10 07.004805 23 39 02.157 -04 41 05.42 23.8r 19QF111 W84 C~7XLi 2021 10 07.169933 23 39 01.515 -04 41 09.27 23.8r 19QF111 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 0.00 0.00 0.01
2 0.0005 -11.27 -0.00 0.02 0.01
3 0.0788 -1888.51 0.02 13.10 -0.09
4 0.0793 -1899.34 -0.02 13.51 0.06
5 1.1302 1044.87 0.05 222.57 0.01
6 1.1306 1035.01 -0.05 223.01 0.01
7 2.1048 5644.38 0.03 382.18 0.02
8 2.1053 5634.03 -0.03 382.46 -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.
19QF111 quality flag:3 Type: CLASSICAL CLASSICAL CLASSICAL axisobj 44.479 44.533 44.428 ecceobj 0.075 0.079 0.072 incobj 3.371 3.371 3.371 qmin 40.200 40.113 40.253 qmax 48.788 48.957 48.577 amean 44.375 44.428 44.323 amin 44.021 44.074 43.959 amax 44.750 44.812 44.696 emean 0.075 0.078 0.073 emin 0.059 0.062 0.057 emax 0.090 0.093 0.087 imean 2.889 2.890 2.885 imin 2.166 2.173 2.153 imax 3.459 3.455 3.461 excite_mean 0.091 0.093 0.088 fracstop 1.000 1.000 1.000 cjmean 3.096 3.096 3.096 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 180.4 180.6 180.2 kozaiamp 180.0 180.0 180.0