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: 19QL110 # Created Sun Apr 27 01:11:16 2025 # Orbit generated from Bernstein formalism # Fitting 8 observations of 8 # Arc: 2.11y # First observation: 2019/08/28 # Last observation: 2021/10/07 Preliminary a, adot, b, bdot, g, gdot: -0.000009 0.021308 -0.000001 -0.001457 0.022874 0.000000 # Chi-squared of fit: 1.57 DOF: 10 RMS: 0.08 # Min/Max residuals: -0.13 0.13 # Exact a, adot, b, bdot, g, gdot: 1.430725E-05 2.138808E-02 -1.654574E-06 -1.464171E-03 2.293678E-02 2.250499E-03 # Covariance matrix: 7.3895E-13 5.1919E-13 4.7938E-15 -4.0497E-14 1.4831E-12 1.3388E-11 5.1919E-13 4.0533E-12 3.7802E-14 -3.0044E-13 4.2830E-12 1.0080E-10 4.7938E-15 3.7802E-14 3.5598E-13 -2.0915E-13 3.5992E-14 1.0586E-12 -4.0497E-14 -3.0044E-13 -2.0915E-13 2.7294E-13 -2.9257E-13 -8.3562E-12 1.4831E-12 4.2830E-12 3.5992E-14 -2.9257E-13 6.6346E-12 9.7617E-11 1.3388E-11 1.0080E-10 1.0586E-12 -8.3562E-12 9.7617E-11 2.8082E-09 # lat0 lon0 xBary yBary zBary JD0 -1.115845 -7.924819 0.300301 -0.018666 -0.958503 2458723.711696 # Heliocentric elements and errors Epoch: 2458720.5000 = 2019/08/25 Mean Anomaly: 84.79849 +/- 0.246 Argument of Peri: 99.21756 +/- 0.177 Long of Asc Node: 156.14949 +/- 0.005 Inclination: 4.07117 +/- 0.001 Eccentricity: 0.10066627 +/- 0.0024 Semi-Major Axis: 44.51631581 +/- 0.0211 Time of Perihelion: 2433166.2665 +/- 72.0 Perihelion: 40.03502413 +/- 0.1092 Aphelion: 48.99760749 +/- 0.1100 Period (y) 297.0209 +/- 0.21 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 44.08448125 +/- 0.0048 Ecliptic Y -6.44648025 +/- 0.0007 Ecliptic Z -0.84909636 +/- 0.0001 Ecliptic XDOT 0.00062309 +/- 0.0000 Ecliptic YDOT 0.00249261 +/- 0.0000 Ecliptic ZDOT -0.00018019 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 44.56141334 +/- 0.0048 Geocenter to KBO 43.59809295 +/- 0.0049 # Hcoef: 8.85
The following table shows the complete astrometric record for 19QL110. 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 (19QL110) followed by the observatory code and reference code for the source of the astrometry.
2019 08 28.210895 23 32 39.174 -04 10 08.60 25.3r 19QL110 W84 C~7XLh 2019 08 28.388381 23 32 38.454 -04 10 13.62 25.3r 19QL110 W84 C~7XLh 2019 09 29.013696 23 30 27.492 -04 24 44.79 25.0r 19QL110 W84 C~7XLi 2019 09 29.177510 23 30 26.821 -04 24 49.06 25.0r 19QL110 W84 C~7XLi 2020 10 18.012125 23 33 51.400 -04 08 24.61 25.4r 19QL110 W84 C~7XLi 2020 10 18.176134 23 33 50.821 -04 08 28.32 25.4r 19QL110 W84 C~7XLi 2021 10 07.004805 23 39 10.461 -03 39 31.47 25.3r 19QL110 W84 C~7XLi 2021 10 07.169933 23 39 09.821 -03 39 35.54 25.3r 19QL110 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 0.09 0.00 0.13
2 0.0005 -11.88 -0.09 -0.36 -0.07
3 0.0871 -2155.68 -0.06 -27.62 -0.07
4 0.0875 -2166.59 0.06 -27.59 -0.03
5 1.1411 1033.69 0.06 -331.51 0.07
6 1.1416 1024.26 -0.06 -331.49 -0.00
7 2.1103 6106.25 -0.13 -631.63 -0.03
8 2.1108 6095.84 0.13 -631.56 -0.00
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.
19QL110 quality flag:3 Type: CLASSICAL CLASSICAL CLASSICAL axisobj 44.531 44.598 44.465 ecceobj 0.096 0.101 0.092 incobj 4.063 4.063 4.063 qmin 39.592 39.436 39.745 qmax 49.549 49.843 49.252 amean 44.421 44.486 44.357 amin 44.066 44.125 44.002 amax 44.808 44.869 44.734 emean 0.091 0.095 0.086 emin 0.075 0.079 0.071 emax 0.106 0.111 0.101 imean 3.781 3.833 3.772 imin 3.183 3.200 3.179 imax 4.437 4.509 4.424 excite_mean 0.112 0.116 0.109 fracstop 1.000 1.000 1.000 cjmean 3.091 3.091 3.092 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 176.9 176.2 177.2 kozaiamp 180.0 179.9 180.0