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: 19QJ110 # Created Tue Apr 1 01:11:14 2025 # Orbit generated from Bernstein formalism # Fitting 8 observations of 8 # Arc: 2.10y # First observation: 2019/08/28 # Last observation: 2021/10/04 Preliminary a, adot, b, bdot, g, gdot: 0.000017 0.025161 -0.000001 -0.000551 0.024941 0.000000 # Chi-squared of fit: 2.14 DOF: 10 RMS: 0.09 # Min/Max residuals: -0.16 0.17 # Exact a, adot, b, bdot, g, gdot: 1.546620E-05 2.510964E-02 -9.320042E-07 -5.494842E-04 2.486081E-02 -5.367369E-04 # Covariance matrix: 7.4080E-13 1.6669E-12 2.0250E-15 -4.6908E-14 1.7234E-12 4.0350E-11 1.6669E-12 1.9907E-11 2.1597E-14 -5.1287E-13 1.0828E-11 4.4077E-10 2.0250E-15 2.1597E-14 3.8286E-13 -1.8973E-13 1.1828E-14 4.8257E-13 -4.6908E-14 -5.1287E-13 -1.8973E-13 1.9255E-13 -2.7634E-13 -1.1467E-11 1.7234E-12 1.0828E-11 1.1828E-14 -2.7634E-13 8.6520E-12 2.3763E-10 4.0350E-11 4.4077E-10 4.8257E-13 -1.1467E-11 2.3763E-10 9.8548E-09 # lat0 lon0 xBary yBary zBary JD0 -0.829937 -8.203463 0.295635 -0.013904 -0.960033 2458723.711696 # Heliocentric elements and errors Epoch: 2458720.5000 = 2019/08/25 Mean Anomaly: 340.39916 +/- 2.710 Argument of Peri: 235.32065 +/- 3.166 Long of Asc Node: 138.64503 +/- 0.021 Inclination: 1.49882 +/- 0.001 Eccentricity: 0.07135248 +/- 0.0015 Semi-Major Axis: 44.12718586 +/- 0.0152 Time of Perihelion: 2464549.9829 +/- 805.9 Perihelion: 40.97860191 +/- 0.0680 Aphelion: 47.27576981 +/- 0.0685 Period (y) 293.1349 +/- 0.15 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 40.71914394 +/- 0.0047 Ecliptic Y -6.17550121 +/- 0.0007 Ecliptic Z -0.58266443 +/- 0.0001 Ecliptic XDOT 0.00034366 +/- 0.0000 Ecliptic YDOT 0.00274608 +/- 0.0000 Ecliptic ZDOT -0.00005988 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 41.18889409 +/- 0.0047 Geocenter to KBO 40.22395814 +/- 0.0048 # Hcoef: 9.37
The following table shows the complete astrometric record for 19QJ110. 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 (19QJ110) followed by the observatory code and reference code for the source of the astrometry.
2019 08 28.210895 23 31 10.422 -04 00 58.99 25.5r 19QJ110 W84 C~7XLh 2019 08 28.388381 23 31 09.648 -04 01 04.25 25.5r 19QJ110 W84 C~7XLh 2019 09 29.013696 23 28 49.270 -04 16 16.73 25.2r 19QJ110 W84 C~7XLh 2019 09 29.177510 23 28 48.554 -04 16 21.39 25.2r 19QJ110 W84 C~7XLh 2021 09 06.108763 23 41 13.398 -03 00 20.14 25.3r 19QJ110 W84 C~7XLh 2021 09 06.196686 23 41 12.992 -03 00 22.71 25.3r 19QJ110 W84 C~7XLh 2021 10 04.002582 23 39 09.276 -03 13 48.98 25.6r 19QJ110 W84 C~7XLh 2021 10 04.175328 23 39 08.505 -03 13 53.93 25.6r 19QJ110 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 0.10 0.00 0.12
2 0.0005 -12.72 -0.10 -0.26 -0.10
3 0.0871 -2302.61 -0.04 -10.63 0.06
4 0.0875 -2314.30 0.04 -10.69 -0.07
5 2.0257 9737.77 0.09 -233.38 -0.04
6 2.0260 9731.15 -0.09 -233.32 0.02
7 2.1021 7706.72 0.17 -237.82 0.04
8 2.1026 7694.14 -0.16 -237.78 -0.02
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.
19QJ110 quality flag:3 Type: CLASSICAL CLASSICAL CLASSICAL axisobj 44.194 44.242 44.150 ecceobj 0.075 0.074 0.076 incobj 1.494 1.495 1.494 qmin 39.862 40.015 39.746 qmax 48.490 48.488 48.572 amean 44.066 44.115 44.022 amin 43.721 43.757 43.669 amax 44.443 44.494 44.398 emean 0.076 0.074 0.078 emin 0.060 0.058 0.061 emax 0.092 0.090 0.094 imean 1.630 1.609 1.652 imin 0.824 0.825 0.824 imax 2.292 2.274 2.307 excite_mean 0.081 0.080 0.083 fracstop 1.000 1.000 1.000 cjmean 3.094 3.095 3.093 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 192.1 187.9 193.3 kozaiamp 179.9 180.0 180.0