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: 19QA110 # Created Sun Apr 27 01:11:15 2025 # Orbit generated from Bernstein formalism # Fitting 10 observations of 10 # Arc: 2.02y # First observation: 2019/08/28 # Last observation: 2021/09/05 Preliminary a, adot, b, bdot, g, gdot: -0.000005 0.021887 0.000000 -0.000719 0.023062 0.000000 # Chi-squared of fit: 1.11 DOF: 14 RMS: 0.06 # Min/Max residuals: -0.09 0.12 # Exact a, adot, b, bdot, g, gdot: 1.459439E-05 2.194931E-02 -2.930863E-07 -7.210765E-04 2.310580E-02 2.233726E-03 # Covariance matrix: 3.8262E-13 3.6655E-13 1.2778E-15 -1.6670E-14 8.6610E-13 1.2107E-11 3.6655E-13 4.3682E-12 1.1501E-14 -1.4333E-13 4.5031E-12 1.0433E-10 1.2778E-15 1.1501E-14 2.4100E-13 -1.4531E-13 1.1938E-14 2.9094E-13 -1.6670E-14 -1.4333E-13 -1.4531E-13 2.2930E-13 -1.5172E-13 -3.6186E-12 8.6610E-13 4.5031E-12 1.1938E-14 -1.5172E-13 6.1197E-12 1.1033E-10 1.2107E-11 1.0433E-10 2.9094E-13 -3.6186E-12 1.1033E-10 2.6342E-09 # lat0 lon0 xBary yBary zBary JD0 -0.870676 -8.671551 0.287782 -0.014622 -0.962406 2458723.711696 # Heliocentric elements and errors Epoch: 2458720.5000 = 2019/08/25 Mean Anomaly: 69.98217 +/- 0.076 Argument of Peri: 123.01829 +/- 0.254 Long of Asc Node: 146.68596 +/- 0.014 Inclination: 2.07190 +/- 0.001 Eccentricity: 0.10076816 +/- 0.0023 Semi-Major Axis: 45.38497318 +/- 0.0174 Time of Perihelion: 2437010.9193 +/- 20.2 Perihelion: 40.81161298 +/- 0.1063 Aphelion: 49.95833338 +/- 0.1068 Period (y) 305.7569 +/- 0.18 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 43.69046295 +/- 0.0046 Ecliptic Y -6.96103534 +/- 0.0007 Ecliptic Z -0.65766249 +/- 0.0001 Ecliptic XDOT 0.00066092 +/- 0.0000 Ecliptic YDOT 0.00253194 +/- 0.0000 Ecliptic ZDOT -0.00008968 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 44.24641325 +/- 0.0045 Geocenter to KBO 43.27917613 +/- 0.0046 # Hcoef: 7.98
The following table shows the complete astrometric record for 19QA110. 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 (19QA110) followed by the observatory code and reference code for the source of the astrometry.
2019 08 28.210895 23 29 30.802 -04 14 18.45 24.4r 19QA110 W84 C~7XLh 2019 08 28.388381 23 29 30.067 -04 14 23.14 24.4r 19QA110 W84 C~7XLh 2019 08 29.211918 23 29 26.774 -04 14 45.02 24.3r 19QA110 W84 C~7XLh 2019 08 29.387113 23 29 26.048 -04 14 49.76 24.3r 19QA110 W84 C~7XLh 2019 09 27.014583 23 27 26.350 -04 27 50.65 24.4r 19QA110 W84 C~7XLh 2019 09 27.176040 23 27 25.668 -04 27 54.89 24.4r 19QA110 W84 C~7XLh 2020 10 17.010669 23 30 48.692 -04 08 51.72 24.3r 19QA110 W84 C~7XLh 2020 10 17.174574 23 30 48.109 -04 08 55.30 24.3r 19QA110 W84 C~7XLh 2021 09 05.096099 23 38 19.299 -03 23 01.37 24.3r 19QA110 W84 C~7XLh 2021 09 05.195929 23 38 18.867 -03 23 03.97 24.3r 19QA110 W84 C~7XLh
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 -0.04
2 0.0005 -11.95 -0.07 0.03 0.04
3 0.0027 -65.85 0.06 -0.66 0.03
4 0.0032 -77.70 -0.08 -0.73 0.02
5 0.0816 -2030.90 0.03 -13.12 -0.05
6 0.0820 -2041.95 -0.03 -13.00 0.03
7 1.1384 1199.63 0.03 -159.45 -0.04
8 1.1388 1190.20 -0.03 -159.30 -0.01
9 2.0230 8486.69 0.08 -302.56 -0.09
10 2.0232 8479.71 -0.08 -302.39 0.12
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.
19QA110 quality flag:3 Type: CLASSICAL CLASSICAL CLASSICAL axisobj 45.394 45.452 45.338 ecceobj 0.097 0.102 0.092 incobj 2.066 2.066 2.066 qmin 40.328 40.172 40.474 qmax 50.488 50.794 50.212 amean 45.285 45.343 45.229 amin 44.911 44.974 44.867 amax 45.680 45.744 45.617 emean 0.092 0.097 0.088 emin 0.078 0.083 0.073 emax 0.106 0.111 0.101 imean 1.874 1.877 1.870 imin 1.296 1.294 1.295 imax 2.400 2.409 2.390 excite_mean 0.098 0.103 0.094 fracstop 1.000 1.000 1.000 cjmean 3.105 3.105 3.106 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 177.9 178.3 178.7 kozaiamp 180.0 180.0 180.0