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: 19QB111 # Created Tue May 7 01:17:36 2024 # Orbit generated from Bernstein formalism # Fitting 10 observations of 10 # Arc: 2.10y # First observation: 2019/08/29 # Last observation: 2021/10/04 Preliminary a, adot, b, bdot, g, gdot: 0.000017 0.029497 -0.000009 0.013190 0.028722 0.000000 # Chi-squared of fit: 0.87 DOF: 14 RMS: 0.05 # Min/Max residuals: -0.14 0.11 # Exact a, adot, b, bdot, g, gdot: 1.607890E-05 2.951231E-02 7.057259E-06 1.320613E-02 2.865599E-02 1.017030E-03 # Covariance matrix: 6.1576E-13 4.0542E-13 -3.5197E-14 2.7672E-13 1.1345E-12 1.0069E-11 4.0542E-13 3.8547E-12 -2.3231E-13 1.8382E-12 3.9454E-12 6.6883E-11 -3.5197E-14 -2.3231E-13 3.6583E-13 -3.0770E-13 -2.4198E-13 -4.2392E-12 2.7672E-13 1.8382E-12 -3.0770E-13 1.1014E-12 1.9095E-12 3.3552E-11 1.1345E-12 3.9454E-12 -2.4198E-13 1.9095E-12 5.6901E-12 6.9478E-11 1.0069E-11 6.6883E-11 -4.2392E-12 3.3552E-11 6.9478E-11 1.2208E-09 # lat0 lon0 xBary yBary zBary JD0 -2.037224 -8.974952 0.266245 -0.034426 -0.967944 2458724.712719 # Heliocentric elements and errors Epoch: 2458720.5000 = 2019/08/25 Mean Anomaly: 8.11172 +/- 0.310 Argument of Peri: 343.76116 +/- 0.438 Long of Asc Node: 355.01500 +/- 0.000 Inclination: 24.14862 +/- 0.001 Eccentricity: 0.16167642 +/- 0.0002 Semi-Major Axis: 42.67001693 +/- 0.0101 Time of Perihelion: 2456426.5021 +/- 87.5 Perihelion: 35.77128119 +/- 0.0131 Aphelion: 49.56875266 +/- 0.0155 Period (y) 278.7356 +/- 0.10 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 35.36567672 +/- 0.0029 Ecliptic Y -5.86166976 +/- 0.0005 Ecliptic Z -1.24028890 +/- 0.0001 Ecliptic XDOT 0.00058856 +/- 0.0000 Ecliptic YDOT 0.00276357 +/- 0.0000 Ecliptic ZDOT 0.00125726 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 35.86960522 +/- 0.0028 Geocenter to KBO 34.89671289 +/- 0.0029 # Hcoef: 9.23
The following table shows the complete astrometric record for 19QB111. 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 (19QB111) followed by the observatory code and reference code for the source of the astrometry.
2019 08 29.211918 23 30 14.513 -05 25 48.18 24.6r 19QB111 W84 C~7XLi 2019 08 29.387113 23 30 13.598 -05 25 52.85 24.6r 19QB111 W84 C~7XLi 2019 09 27.014583 23 27 41.150 -05 38 18.05 24.7r 19QB111 W84 C~7XLi 2019 09 27.176040 23 27 40.291 -05 38 22.06 24.7r 19QB111 W84 C~7XLi 2020 10 17.010669 23 31 02.021 -04 24 21.44 24.8r 19QB111 W84 C~7XLi 2020 10 17.174574 23 31 01.278 -04 24 24.56 24.8r 19QB111 W84 C~7XLi 2021 09 06.108763 23 39 34.453 -02 45 47.64 24.6r 19QB111 W84 C~7XLi 2021 09 06.196686 23 39 33.970 -02 45 50.09 24.6r 19QB111 W84 C~7XLi 2021 10 04.002582 23 37 06.704 -02 57 54.19 24.7r 19QB111 W84 C~7XLi 2021 10 04.175328 23 37 05.812 -02 57 58.41 24.7r 19QB111 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 0.04 0.00 0.05
2 0.0005 -14.40 -0.03 1.10 -0.09
3 0.0789 -2400.02 -0.01 213.43 0.04
4 0.0793 -2413.39 0.01 214.80 -0.01
5 1.1357 2108.13 0.01 3107.25 -0.00
6 1.1361 2096.69 -0.03 3108.77 0.03
7 2.0230 11509.48 0.11 5503.45 0.01
8 2.0232 11501.84 -0.14 5504.08 -0.06
9 2.0994 9182.91 0.01 5714.26 0.01
10 2.0998 9168.94 0.03 5715.68 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.
19QB111 quality flag:3 Type: SCATEXTD SCATEXTD SCATEXTD axisobj 42.659 42.695 42.623 ecceobj 0.162 0.163 0.161 incobj 24.112 24.112 24.111 qmin 34.433 34.491 34.371 qmax 51.309 51.241 51.177 amean 42.611 42.640 42.582 amin 42.233 42.248 42.204 amax 43.048 43.067 43.009 emean 0.169 0.170 0.169 emin 0.149 0.151 0.148 emax 0.192 0.190 0.191 imean 24.344 24.351 24.318 imin 23.710 23.746 23.692 imax 24.982 24.959 24.968 excite_mean 0.446 0.446 0.445 fracstop 1.000 1.000 1.000 cjmean 2.843 2.843 2.843 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 177.7 181.4 172.9 kozaiamp 180.0 179.9 180.0