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: 19QM111 # Created Tue Apr 1 01:11:15 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: 0.000018 0.019611 -0.000000 0.000203 0.021904 0.000000 # Chi-squared of fit: 21.91 DOF: 10 RMS: 0.29 # Min/Max residuals: -0.68 0.68 # Exact a, adot, b, bdot, g, gdot: 1.390945E-05 1.953402E-02 -7.786401E-08 2.027586E-04 2.180887E-02 -1.825936E-03 # Covariance matrix: 7.4125E-13 1.5081E-12 -3.3727E-16 2.0227E-14 1.8356E-12 4.7686E-11 1.5081E-12 1.5251E-11 -5.0607E-15 1.8804E-13 9.9634E-12 4.4021E-10 -3.3727E-16 -5.0607E-15 3.8122E-13 -1.8796E-13 -2.3648E-15 -1.5033E-13 2.0227E-14 1.8804E-13 -1.8796E-13 1.8026E-13 1.2036E-13 5.5018E-12 1.8356E-12 9.9634E-12 -2.3648E-15 1.2036E-13 9.6035E-12 2.8319E-10 4.7686E-11 4.4021E-10 -1.5033E-13 5.5018E-12 2.8319E-10 1.2876E-08 # lat0 lon0 xBary yBary zBary JD0 -2.724855 -7.523198 0.274303 -0.045925 -0.965070 2458725.713221 # Heliocentric elements and errors Epoch: 2458720.5000 = 2019/08/25 Mean Anomaly: 253.08736 +/- 1.481 Argument of Peri: 40.15950 +/- 1.370 Long of Asc Node: 69.70819 +/- 0.026 Inclination: 2.73229 +/- 0.000 Eccentricity: 0.10331725 +/- 0.0050 Semi-Major Axis: 45.05110676 +/- 0.0480 Time of Perihelion: 2491521.2043 +/- 451.3 Perihelion: 40.39655012 +/- 0.2274 Aphelion: 49.70566340 +/- 0.2295 Period (y) 302.3893 +/- 0.48 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 46.33156367 +/- 0.0064 Ecliptic Y -6.40202952 +/- 0.0009 Ecliptic Z -2.17984029 +/- 0.0003 Ecliptic XDOT 0.00010374 +/- 0.0000 Ecliptic YDOT 0.00246156 +/- 0.0000 Ecliptic ZDOT 0.00003610 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 46.82255309 +/- 0.0064 Geocenter to KBO 45.85289803 +/- 0.0065 # Hcoef: 8.94
The following table shows the complete astrometric record for 19QM111. 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 (19QM111) followed by the observatory code and reference code for the source of the astrometry.
2019 08 30.212420 23 36 41.271 -05 29 16.95 25.6r 19QM111 W84 C~7XLj 2019 08 30.387214 23 36 40.588 -05 29 21.71 25.6r 19QM111 W84 C~7XLj 2019 09 28.012277 23 34 45.959 -05 41 37.57 25.6r 19QM111 W84 C~7XLj 2019 09 28.177548 23 34 45.217 -05 41 42.44 25.6r 19QM111 W84 C~7XLj 2021 09 09.073508 23 44 16.328 -04 38 45.20 25.4r 19QM111 W84 C~7XLj 2021 09 09.192572 23 44 15.857 -04 38 49.10 25.4r 19QM111 W84 C~7XLj 2021 10 06.002765 23 42 28.269 -04 50 09.46 25.5r 19QM111 W84 C~7XLj 2021 10 06.167954 23 42 27.609 -04 50 13.33 25.5r 19QM111 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 0.05 0.00 0.05
2 0.0005 -11.25 -0.06 -0.33 -0.21
3 0.0788 -1874.06 0.68 1.20 0.24
4 0.0793 -1886.16 -0.68 1.11 -0.07
5 2.0284 7447.24 0.06 78.94 0.37
6 2.0287 7439.22 -0.06 78.17 -0.41
7 2.1021 5691.24 0.10 95.17 -0.03
8 2.1025 5680.64 -0.10 95.55 0.06
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.
19QM111 quality flag:3 Type: CLASSICAL CLASSICAL CLASSICAL axisobj 45.170 45.287 45.070 ecceobj 0.106 0.119 0.094 incobj 2.733 2.733 2.733 qmin 39.079 38.276 39.589 qmax 51.234 52.420 50.592 amean 45.027 45.136 44.930 amin 44.654 44.714 44.572 amax 45.424 45.570 45.331 emean 0.113 0.130 0.100 emin 0.098 0.111 0.086 emax 0.129 0.150 0.116 imean 1.480 1.523 1.448 imin 0.677 0.638 0.703 imax 2.142 2.234 2.034 excite_mean 0.117 0.133 0.104 fracstop 1.000 1.000 1.000 cjmean 3.097 3.094 3.100 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 165.4 180.5 169.4 kozaiamp 180.0 180.0 180.0