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: 19AJ142 # Created Sun Dec 22 02:11:03 2024 # Orbit generated from Bernstein formalism # Fitting 12 observations of 12 # Arc: 83.97d # First observation: 2019/01/11 # Last observation: 2019/04/05 Preliminary a, adot, b, bdot, g, gdot: -0.000002 0.027705 -0.000004 -0.001251 0.028903 0.000000 # Chi-squared of fit: 5.99 DOF: 18 RMS: 0.12 # Min/Max residuals: -0.31 0.27 # Exact a, adot, b, bdot, g, gdot: 1.916036E-05 3.491054E-02 -1.688981E-07 -9.550207E-04 2.990125E-02 -4.609364E-03 # Covariance matrix: 3.7526E-13 1.7945E-11 1.2842E-14 6.7021E-13 4.1961E-12 1.3292E-10 1.7945E-11 4.1875E-08 2.5927E-11 1.4853E-09 8.1702E-09 1.3395E-07 1.2842E-14 2.5927E-11 3.6711E-13 -8.5945E-13 5.0747E-12 8.5888E-11 6.7021E-13 1.4853E-09 -8.5945E-13 6.6459E-11 2.8921E-10 4.6143E-09 4.1961E-12 8.1702E-09 5.0747E-12 2.8921E-10 1.6026E-09 2.7763E-08 1.3292E-10 1.3395E-07 8.5888E-11 4.6143E-09 2.7763E-08 7.5487E-07 # lat0 lon0 xBary yBary zBary JD0 -5.914075 168.247863 0.836654 -0.054586 -0.527819 2458495.032111 # Heliocentric elements and errors Epoch: 2458490.5000 = 2019/01/07 Mean Anomaly: 330.54079 +/- 2.997 Argument of Peri: 301.82860 +/- 5.691 Long of Asc Node: 273.34908 +/- 0.192 Inclination: 6.06894 +/- 0.006 Eccentricity: 0.24921277 +/- 0.0166 Semi-Major Axis: 42.24154524 +/- 0.3115 Time of Perihelion: 2466696.4097 +/- 830.0 Perihelion: 31.71441274 +/- 0.7393 Aphelion: 52.76867773 +/- 0.8020 Period (y) 274.5478 +/- 3.04 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X -32.91649832 +/- 0.0436 Ecliptic Y 7.69456141 +/- 0.0091 Ecliptic Z -3.44594549 +/- 0.0046 Ecliptic XDOT -0.00022332 +/- 0.0001 Ecliptic YDOT -0.00321874 +/- 0.0000 Ecliptic ZDOT -0.00004370 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 33.97906234 +/- 0.0423 Geocenter to KBO 33.44342035 +/- 0.0448 # Hcoef: 8.54
The following table shows the complete astrometric record for 19AJ142. 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 (19AJ142) followed by the observatory code and reference code for the source of the astrometry.
2019 01 11.53131 11 07 32.71 -00 47 56.9 23.7z 19AJ142 T09 C~870S 2019 01 11.54824 11 07 32.68 -00 47 56.9 23.5z 19AJ142 T09 C~870S 2019 01 11.57887 11 07 32.60 -00 47 56.6 23.7z 19AJ142 T09 C~870S 2019 01 11.61961 11 07 32.48 -00 47 56.3 23.7z 19AJ142 T09 C~870S 2019 03 15.35287 11 02 42.87 -00 23 18.3 23.4y 19AJ142 T09 C~870S 2019 03 15.38407 11 02 42.72 -00 23 17.3 23.0y 19AJ142 T09 C~870S 2019 03 15.39755 11 02 42.61 -00 23 17.1 23.2y 19AJ142 T09 C~870S 2019 03 15.42746 11 02 42.47 -00 23 15.8 23.0y 19AJ142 T09 C~870S 2019 03 15.51887 11 02 41.95 -00 23 12.6 23.5y 19AJ142 T09 C~870S 2019 04 05.39521 11 00 57.43 -00 11 13.9 24.4r 19AJ142 T09 C~870S 2019 04 05.47099 11 00 57.09 -00 11 11.4 24.6r 19AJ142 T09 C~870S 2019 04 05.50326 11 00 56.95 -00 11 10.4 24.3r 19AJ142 T09 C~870S
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 -0.14 0.00 -0.07
2 0.0000 -0.41 0.11 -0.18 -0.07
3 0.0001 -1.64 0.10 -0.37 0.07
4 0.0002 -3.41 -0.06 -0.79 0.07
5 0.1720 -4580.67 -0.04 -331.96 0.10
6 0.1721 -4583.13 0.27 -331.92 0.15
7 0.1721 -4584.73 -0.13 -332.38 -0.31
8 0.1722 -4587.17 0.10 -332.00 0.07
9 0.1725 -4595.61 -0.20 -332.09 -0.01
10 0.2296 -6320.74 -0.13 -281.18 -0.01
11 0.2298 -6326.41 -0.00 -280.86 0.02
12 0.2299 -6328.74 0.13 -280.76 -0.01
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.
19AJ142 quality flag:2 Type: 5:3EE SCATNEAR SCATNEAR axisobj 42.058 43.676 40.819 ecceobj 0.243 0.249 0.245 incobj 6.056 6.034 6.079 qmin 30.789 32.451 30.386 qmax 54.593 55.554 68.948 amean 42.327 43.134 47.576 amin 41.808 42.309 40.284 amax 42.923 44.253 50.451 emean 0.245 0.200 0.321 emin 0.178 0.170 0.228 emax 0.273 0.258 0.370 imean 8.208 12.152 7.158 imin 6.118 7.569 4.348 imax 12.274 14.247 11.661 excite_mean 0.286 0.292 0.345 fracstop 1.000 1.000 1.000 cjmean 2.985 2.991 2.995 libcent 0 181.0 -180.0 -180.0 libamp 0 108.6 -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 133.2 178.6 177.9 kozaiamp 179.9 180.0 180.0