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: 19QY110 # Created Mon Apr 28 01:11:16 2025 # Orbit generated from Bernstein formalism # Fitting 8 observations of 8 # Arc: 2.10y # First observation: 2019/08/30 # Last observation: 2021/10/06 Preliminary a, adot, b, bdot, g, gdot: -0.000008 0.023346 -0.000000 -0.000390 0.024154 0.000000 # Chi-squared of fit: 0.75 DOF: 10 RMS: 0.05 # Min/Max residuals: -0.10 0.10 # Exact a, adot, b, bdot, g, gdot: 1.524920E-05 2.342689E-02 -3.358485E-07 -3.909217E-04 2.421277E-02 2.019290E-03 # Covariance matrix: 7.3975E-13 6.2745E-13 8.7521E-16 -1.2494E-14 1.6439E-12 1.4431E-11 6.2745E-13 4.7973E-12 9.3939E-15 -8.5005E-14 5.2327E-12 1.0583E-10 8.7521E-16 9.3939E-15 3.5405E-13 -2.0563E-13 8.3227E-15 2.3651E-13 -1.2494E-14 -8.5005E-14 -2.0563E-13 2.5054E-13 -8.8762E-14 -2.0431E-12 1.6439E-12 5.2327E-12 8.3227E-15 -8.8762E-14 8.0363E-12 1.0720E-10 1.4431E-11 1.0583E-10 2.3651E-13 -2.0431E-12 1.0720E-10 2.5675E-09 # lat0 lon0 xBary yBary zBary JD0 -1.773417 -7.699583 0.271328 -0.029919 -0.966539 2458725.713221 # Heliocentric elements and errors Epoch: 2458720.5000 = 2019/08/25 Mean Anomaly: 76.97978 +/- 0.146 Argument of Peri: 154.31993 +/- 0.192 Long of Asc Node: 111.15032 +/- 0.031 Inclination: 1.98525 +/- 0.001 Eccentricity: 0.08321161 +/- 0.0022 Semi-Major Axis: 42.78468168 +/- 0.0153 Time of Perihelion: 2436862.7692 +/- 39.7 Perihelion: 39.22449946 +/- 0.0931 Aphelion: 46.34486391 +/- 0.0935 Period (y) 279.8599 +/- 0.15 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 41.83333477 +/- 0.0048 Ecliptic Y -5.93616749 +/- 0.0007 Ecliptic Z -1.27814360 +/- 0.0002 Ecliptic XDOT 0.00058818 +/- 0.0000 Ecliptic YDOT 0.00259530 +/- 0.0000 Ecliptic ZDOT -0.00005147 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 42.27173563 +/- 0.0047 Geocenter to KBO 41.30052806 +/- 0.0048 # Hcoef: 8.58
The following table shows the complete astrometric record for 19QY110. 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 (19QY110) followed by the observatory code and reference code for the source of the astrometry.
2019 08 30.212420 23 34 31.528 -04 41 02.69 24.7r 19QY110 W84 C~7XLi 2019 08 30.387214 23 34 30.777 -04 41 07.54 24.7r 19QY110 W84 C~7XLi 2019 09 28.012277 23 32 25.601 -04 54 40.97 24.7r 19QY110 W84 C~7XLi 2019 09 28.177548 23 32 24.869 -04 54 45.46 24.7r 19QY110 W84 C~7XLi 2020 10 18.012125 23 36 00.860 -04 32 44.31 24.9r 19QY110 W84 C~7XLi 2020 10 18.176134 23 36 00.248 -04 32 47.99 24.9r 19QY110 W84 C~7XLi 2021 10 06.002765 23 41 46.533 -03 57 09.80 24.7r 19QY110 W84 C~7XLi 2021 10 06.167954 23 41 45.824 -03 57 13.97 24.7r 19QY110 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 0.01 0.00 0.02
2 0.0005 -12.23 -0.01 -0.01 0.08
3 0.0788 -2052.51 0.04 -7.87 -0.09
4 0.0793 -2064.33 -0.04 -7.68 -0.02
5 1.1357 1423.85 0.03 -70.89 0.03
6 1.1361 1413.99 -0.03 -70.65 -0.01
7 2.1021 7019.82 0.04 -163.85 -0.10
8 2.1025 7008.42 -0.04 -163.46 0.10
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.
19QY110 quality flag:3 Type: CLASSICAL CLASSICAL CLASSICAL axisobj 42.803 42.856 42.752 ecceobj 0.079 0.083 0.075 incobj 1.986 1.986 1.985 qmin 38.433 38.514 38.696 qmax 47.216 47.217 46.877 amean 42.692 42.752 42.644 amin 42.337 42.399 42.311 amax 43.065 43.118 43.013 emean 0.072 0.072 0.063 emin 0.045 0.043 0.034 emax 0.097 0.096 0.090 imean 1.757 1.814 1.827 imin 0.130 0.130 0.130 imax 3.225 3.297 3.218 excite_mean 0.080 0.081 0.073 fracstop 1.000 1.000 1.000 cjmean 3.078 3.079 3.079 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 174.6 173.3 172.6 kozaiamp 180.0 180.0 180.0