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: 19QT111 # Created Tue Apr 1 01:11:15 2025 # Orbit generated from Bernstein formalism # Fitting 12 observations of 12 # Arc: 2.10y # First observation: 2019/08/28 # Last observation: 2021/10/04 Preliminary a, adot, b, bdot, g, gdot: 0.000012 0.020977 0.000001 -0.000542 0.022757 0.000000 # Chi-squared of fit: 1.35 DOF: 18 RMS: 0.06 # Min/Max residuals: -0.13 0.12 # Exact a, adot, b, bdot, g, gdot: 1.445241E-05 2.095162E-02 -4.154359E-07 -5.416041E-04 2.269867E-02 -1.079819E-04 # Covariance matrix: 6.6669E-13 5.0503E-13 3.4402E-15 -1.9485E-14 1.2909E-12 1.7296E-11 5.0503E-13 3.4942E-12 1.8004E-14 -9.8006E-14 4.1398E-12 8.6908E-11 3.4402E-15 1.8004E-14 3.3298E-13 -1.9454E-13 2.1683E-14 4.7391E-13 -1.9485E-14 -9.8006E-14 -1.9454E-13 1.8182E-13 -1.1973E-13 -2.5756E-12 1.2909E-12 4.1398E-12 2.1683E-14 -1.1973E-13 6.1069E-12 1.0621E-10 1.7296E-11 8.6908E-11 4.7391E-13 -2.5756E-12 1.0621E-10 2.2839E-09 # lat0 lon0 xBary yBary zBary JD0 -0.433423 -7.435985 0.308470 -0.007229 -0.956060 2458723.711696 # Heliocentric elements and errors Epoch: 2458720.5000 = 2019/08/25 Mean Anomaly: 198.95716 +/- 4.383 Argument of Peri: 357.96916 +/- 4.378 Long of Asc Node: 156.23974 +/- 0.013 Inclination: 1.54582 +/- 0.001 Eccentricity: 0.02797132 +/- 0.0006 Semi-Major Axis: 43.85281254 +/- 0.0122 Time of Perihelion: 2506170.2060 +/- 1291.2 Perihelion: 42.62619152 +/- 0.0296 Aphelion: 45.07943356 +/- 0.0299 Period (y) 290.4052 +/- 0.12 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 44.59464477 +/- 0.0048 Ecliptic Y -6.13800368 +/- 0.0006 Ecliptic Z -0.33327709 +/- 0.0000 Ecliptic XDOT 0.00032211 +/- 0.0000 Ecliptic YDOT 0.00250819 +/- 0.0000 Ecliptic ZDOT -0.00006545 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 45.01631377 +/- 0.0047 Geocenter to KBO 44.05545387 +/- 0.0048 # Hcoef: 8.23
The following table shows the complete astrometric record for 19QT111. 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 (19QT111) followed by the observatory code and reference code for the source of the astrometry.
2019 08 28.210895 23 33 22.330 -03 20 56.56 24.7r 19QT111 W84 C~7XLj 2019 08 28.388381 23 33 21.615 -03 21 01.20 24.7r 19QT111 W84 C~7XLj 2019 09 29.013696 23 31 11.470 -03 35 09.68 24.7r 19QT111 W84 C~7XLj 2019 09 29.177510 23 31 10.795 -03 35 14.14 24.7r 19QT111 W84 C~7XLj 2020 10 18.012125 23 34 25.122 -03 16 26.10 24.6r 19QT111 W84 C~7XLj 2020 10 18.176134 23 34 24.552 -03 16 29.86 24.6r 19QT111 W84 C~7XLj 2020 10 21.004397 23 34 15.080 -03 17 30.75 24.8r 19QT111 W84 C~7XLj 2020 10 21.174149 23 34 14.499 -03 17 34.25 24.8r 19QT111 W84 C~7XLj 2021 09 06.108763 23 41 41.979 -02 31 17.41 24.6r 19QT111 W84 C~7XLj 2021 09 06.196686 23 41 41.610 -02 31 19.73 24.6r 19QT111 W84 C~7XLj 2021 10 04.002582 23 39 46.861 -02 43 49.98 24.6r 19QT111 W84 C~7XLj 2021 10 04.175328 23 39 46.158 -02 43 54.50 24.6r 19QT111 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 0.03 0.00 0.01
2 0.0005 -11.67 -0.08 -0.03 -0.01
3 0.0871 -2137.03 0.05 -10.18 0.12
4 0.0875 -2148.08 -0.02 -10.29 -0.03
5 1.1411 970.65 0.02 -123.20 0.02
6 1.1416 961.32 0.01 -123.28 -0.13
7 1.1493 806.96 0.08 -123.13 -0.12
8 1.1498 797.58 -0.07 -122.90 0.03
9 2.0257 8056.79 0.06 -228.52 -0.01
10 2.0260 8050.79 0.02 -228.45 0.06
11 2.1021 6172.58 -0.01 -235.13 0.04
12 2.1026 6161.10 -0.09 -235.10 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.
19QT111 quality flag:3 Type: CLASSICAL CLASSICAL CLASSICAL axisobj 43.924 43.953 43.896 ecceobj 0.027 0.029 0.026 incobj 1.538 1.538 1.538 qmin 41.463 41.346 41.472 qmax 46.345 46.488 46.289 amean 43.801 43.829 43.773 amin 43.464 43.491 43.431 amax 44.148 44.181 44.121 emean 0.034 0.036 0.033 emin 0.017 0.019 0.016 emax 0.050 0.052 0.049 imean 1.889 1.881 1.898 imin 1.147 1.141 1.153 imax 2.574 2.563 2.584 excite_mean 0.048 0.049 0.048 fracstop 1.000 1.000 1.000 cjmean 3.096 3.097 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 180.6 187.2 175.6 kozaiamp 180.0 180.0 180.0