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: 19QU110 # Created Mon Apr 28 01:11:16 2025 # Orbit generated from Bernstein formalism # Fitting 8 observations of 8 # Arc: 2.11y # First observation: 2019/08/29 # Last observation: 2021/10/07 Preliminary a, adot, b, bdot, g, gdot: 0.000007 0.019954 0.000000 -0.000211 0.021996 0.000000 # Chi-squared of fit: 1.44 DOF: 10 RMS: 0.07 # Min/Max residuals: -0.11 0.14 # Exact a, adot, b, bdot, g, gdot: 1.383892E-05 1.991156E-02 -1.986242E-07 -2.099204E-04 2.193946E-02 -1.453705E-03 # Covariance matrix: 7.3979E-13 5.7637E-13 2.8539E-16 -7.6135E-15 1.6353E-12 1.5112E-11 5.7637E-13 4.3943E-12 5.1339E-15 -5.0051E-14 4.9351E-12 1.1503E-10 2.8539E-16 5.1339E-15 3.5326E-13 -2.0444E-13 4.1000E-15 1.6093E-13 -7.6135E-15 -5.0051E-14 -2.0444E-13 2.4661E-13 -5.4217E-14 -1.4371E-12 1.6353E-12 4.9351E-12 4.1000E-15 -5.4217E-14 7.9541E-12 1.1757E-10 1.5112E-11 1.1503E-10 1.6093E-13 -1.4371E-12 1.1757E-10 3.3678E-09 # lat0 lon0 xBary yBary zBary JD0 -1.609349 -9.202380 0.262398 -0.027226 -0.969223 2458724.712719 # Heliocentric elements and errors Epoch: 2458720.5000 = 2019/08/25 Mean Anomaly: 257.75436 +/- 0.848 Argument of Peri: 359.63566 +/- 0.779 Long of Asc Node: 101.64608 +/- 0.045 Inclination: 1.68976 +/- 0.000 Eccentricity: 0.07844962 +/- 0.0026 Semi-Major Axis: 45.53684638 +/- 0.0286 Time of Perihelion: 2490598.0646 +/- 262.8 Perihelion: 41.96449821 +/- 0.1232 Aphelion: 49.10919455 +/- 0.1243 Period (y) 307.2930 +/- 0.29 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 45.89359420 +/- 0.0058 Ecliptic Y -7.70743283 +/- 0.0010 Ecliptic Z -1.28011014 +/- 0.0002 Ecliptic XDOT 0.00022610 +/- 0.0000 Ecliptic YDOT 0.00248250 +/- 0.0000 Ecliptic ZDOT -0.00002132 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 46.55389555 +/- 0.0057 Geocenter to KBO 45.57996510 +/- 0.0059 # Hcoef: 8.45
The following table shows the complete astrometric record for 19QU110. 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 (19QU110) followed by the observatory code and reference code for the source of the astrometry.
2019 08 29.211918 23 28 43.489 -05 07 35.52 24.9r 19QU110 W84 C~7XLi 2019 08 29.387113 23 28 42.786 -05 07 40.10 24.9r 19QU110 W84 C~7XLi 2019 09 27.014583 23 26 47.827 -05 20 00.33 25.1r 19QU110 W84 C~7XLi 2019 09 27.176040 23 26 47.168 -05 20 04.27 25.1r 19QU110 W84 C~7XLi 2020 10 16.001792 23 29 48.854 -05 01 11.97 25.0r 19QU110 W84 C~7XLi 2020 10 16.175804 23 29 48.256 -05 01 15.26 25.0r 19QU110 W84 C~7XLi 2021 10 07.004805 23 34 36.759 -04 31 16.02 25.1r 19QU110 W84 C~7XLi 2021 10 07.169933 23 34 36.117 -04 31 19.82 25.1r 19QU110 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 0.11 0.00 0.01
2 0.0005 -11.46 -0.11 -0.07 -0.01
3 0.0789 -1881.46 0.05 -4.08 -0.07
4 0.0793 -1892.06 -0.05 -3.83 0.06
5 1.1329 1048.75 -0.06 -32.76 -0.11
6 1.1334 1039.24 0.06 -32.25 0.14
7 2.1076 5713.21 0.06 -85.00 -0.07
8 2.1080 5702.88 -0.06 -84.68 0.05
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.
19QU110 quality flag:3 Type: CLASSICAL CLASSICAL CLASSICAL axisobj 45.633 45.702 45.566 ecceobj 0.082 0.088 0.076 incobj 1.690 1.690 1.690 qmin 40.744 40.540 40.938 qmax 50.480 50.887 50.155 amean 45.477 45.562 45.428 amin 45.105 45.189 45.062 amax 45.879 45.964 45.820 emean 0.087 0.093 0.081 emin 0.073 0.080 0.068 emax 0.101 0.107 0.095 imean 0.478 0.477 0.476 imin 0.175 0.175 0.175 imax 0.741 0.741 0.736 excite_mean 0.087 0.093 0.082 fracstop 1.000 1.000 1.000 cjmean 3.110 3.110 3.111 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 160.9 160.0 161.1 kozaiamp 180.0 180.0 179.9