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: 19QQ111 # Created Mon Apr 28 01:11:17 2025 # Orbit generated from Bernstein formalism # Fitting 8 observations of 8 # Arc: 1.15y # First observation: 2019/08/30 # Last observation: 2020/10/22 Preliminary a, adot, b, bdot, g, gdot: -0.000000 0.022178 0.000000 -0.000370 0.023336 0.000000 # Chi-squared of fit: 8.72 DOF: 10 RMS: 0.18 # Min/Max residuals: -0.30 0.30 # Exact a, adot, b, bdot, g, gdot: 1.451624E-05 2.218491E-02 -5.586358E-08 -3.696048E-04 2.333193E-02 -1.268356E-03 # Covariance matrix: 7.4103E-13 1.4142E-12 1.7662E-15 -4.0848E-14 1.9274E-12 1.1433E-10 1.4142E-12 2.8961E-10 3.0896E-13 -9.1196E-12 1.1218E-10 3.8148E-08 1.7662E-15 3.0896E-13 3.9378E-13 -3.6481E-13 1.1946E-13 4.0826E-11 -4.0848E-14 -9.1196E-12 -3.6481E-13 8.9027E-13 -3.4845E-12 -1.2091E-09 1.9274E-12 1.1218E-10 1.1946E-13 -3.4845E-12 4.8111E-11 1.4368E-08 1.1433E-10 3.8148E-08 4.0826E-11 -1.2091E-09 1.4368E-08 5.0776E-06 # lat0 lon0 xBary yBary zBary JD0 -3.176990 -7.848771 0.268809 -0.053624 -0.966218 2458725.713221 # Heliocentric elements and errors Epoch: 2458720.5000 = 2019/08/25 Mean Anomaly: 281.32388 +/- 1.652 Argument of Peri: 338.33227 +/- 9.440 Long of Asc Node: 99.05254 +/- 0.126 Inclination: 3.25277 +/- 0.002 Eccentricity: 0.06072534 +/- 0.1015 Semi-Major Axis: 44.19927445 +/- 0.4709 Time of Perihelion: 2482176.9122 +/- 319.5 Perihelion: 41.51525837 +/- 4.5080 Aphelion: 46.88329052 +/- 4.5139 Period (y) 293.8535 +/- 4.70 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 43.31772981 +/- 0.0126 Ecliptic Y -6.24930369 +/- 0.0017 Ecliptic Z -2.37531168 +/- 0.0007 Ecliptic XDOT 0.00021437 +/- 0.0003 Ecliptic YDOT 0.00260007 +/- 0.0000 Ecliptic ZDOT -0.00003528 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 43.83060139 +/- 0.0125 Geocenter to KBO 42.85972602 +/- 0.0127 # Hcoef: 9.59
The following table shows the complete astrometric record for 19QQ111. 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 (19QQ111) followed by the observatory code and reference code for the source of the astrometry.
2019 08 30.212420 23 36 12.471 -06 01 55.19 25.9r 19QQ111 W84 C~7XLj 2019 08 30.387214 23 36 11.740 -06 02 00.27 25.9r 19QQ111 W84 C~7XLj 2019 09 28.012277 23 34 10.445 -06 15 08.10 25.7r 19QQ111 W84 C~7XLj 2019 09 28.177548 23 34 09.784 -06 15 12.40 25.7r 19QQ111 W84 C~7XLj 2020 10 20.004233 23 37 26.063 -05 54 51.05 26.1r 19QQ111 W84 C~7XLj 2020 10 20.172968 23 37 25.440 -05 54 54.26 26.1r 19QQ111 W84 C~7XLj 2020 10 22.003924 23 37 19.206 -05 55 29.42 26.0r 19QQ111 W84 C~7XLj 2020 10 22.173214 23 37 18.658 -05 55 32.81 26.0r 19QQ111 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 0.11 0.00 -0.04
2 0.0005 -12.02 -0.11 -0.34 -0.22
3 0.0788 -1985.16 -0.30 -7.83 0.26
4 0.0793 -1995.91 0.30 -7.88 0.01
5 1.1411 1176.08 0.16 -45.94 -0.11
6 1.1416 1166.28 -0.17 -45.20 0.14
7 1.1466 1066.95 -0.18 -40.57 0.17
8 1.1471 1058.10 0.18 -40.44 -0.21
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.
19QQ111 quality flag:2 Type: CLASSICAL SCATNEAR CLASSICAL axisobj 44.292 48.475 44.221 ecceobj 0.065 0.329 0.039 incobj 3.257 3.249 3.257 qmin 40.093 31.087 41.242 qmax 48.438 123.641 47.110 amean 44.156 64.997 44.090 amin 43.797 46.651 43.743 amax 44.524 77.787 44.443 emean 0.072 0.496 0.045 emin 0.055 0.305 0.029 emax 0.088 0.589 0.061 imean 1.745 4.549 1.673 imin 0.944 0.416 0.971 imax 2.428 7.506 2.303 excite_mean 0.079 0.503 0.054 fracstop 1.000 1.000 1.000 cjmean 3.096 2.985 3.099 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 169.7 177.8 172.3 kozaiamp 179.9 180.0 179.9