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: 19SB235 # Created Fri Nov 22 02:11:01 2024 # Orbit generated from Bernstein formalism # Fitting 9 observations of 9 # Arc: 2.09y # First observation: 2019/08/28 # Last observation: 2021/10/01 Preliminary a, adot, b, bdot, g, gdot: 0.000008 0.025806 -0.000006 0.010266 0.026376 0.000000 # Chi-squared of fit: 1.18 DOF: 12 RMS: 0.06 # Min/Max residuals: -0.09 0.12 # Exact a, adot, b, bdot, g, gdot: 1.537207E-05 2.578554E-02 6.521208E-06 1.026557E-02 2.632898E-02 2.038177E-04 # Covariance matrix: 7.2040E-13 5.0886E-13 -2.8633E-14 2.4476E-13 1.4043E-12 1.1831E-11 5.0886E-13 3.0193E-12 -1.5125E-13 1.2868E-12 3.1003E-12 6.2226E-11 -2.8633E-14 -1.5125E-13 3.0103E-13 -2.4446E-13 -1.4755E-13 -3.4817E-12 2.4476E-13 1.2868E-12 -2.4446E-13 8.4242E-13 1.2582E-12 2.9607E-11 1.4043E-12 3.1003E-12 -1.4755E-13 1.2582E-12 5.0476E-12 6.0829E-11 1.1831E-11 6.2226E-11 -3.4817E-12 2.9607E-11 6.0829E-11 1.4318E-09 # lat0 lon0 xBary yBary zBary JD0 -0.339533 -7.212217 0.312201 -0.005655 -0.954859 2458723.711696 # Heliocentric elements and errors Epoch: 2458720.5000 = 2019/08/25 Mean Anomaly: 1.40192 +/- 0.720 Argument of Peri: 357.37904 +/- 0.880 Long of Asc Node: 353.15033 +/- 0.000 Inclination: 21.69151 +/- 0.001 Eccentricity: 0.09731915 +/- 0.0002 Semi-Major Axis: 43.13730920 +/- 0.0116 Time of Perihelion: 2458317.5049 +/- 207.0 Perihelion: 38.93922313 +/- 0.0130 Aphelion: 47.33539527 +/- 0.0148 Period (y) 283.3269 +/- 0.11 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 38.59072434 +/- 0.0032 Ecliptic Y -5.20486016 +/- 0.0004 Ecliptic Z -0.22482284 +/- 0.0000 Ecliptic XDOT 0.00037239 +/- 0.0000 Ecliptic YDOT 0.00265723 +/- 0.0000 Ecliptic ZDOT 0.00106711 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 38.94078992 +/- 0.0032 Geocenter to KBO 37.98095672 +/- 0.0032 # Hcoef: 8.13
The following table shows the complete astrometric record for 19SB235. 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 (19SB235) followed by the observatory code and reference code for the source of the astrometry.
2019 08 28.210895 23 34 02.823 -03 10 27.74 23.9r 19SB235 W84 C~7XM7 2019 08 28.388381 23 34 01.979 -03 10 31.99 23.9r 19SB235 W84 C~7XM7 2019 09 29.05984 23 31 27.33 -03 23 48.1 24.5V 19SB235 W84 C~7XM7 2019 09 29.12535 23 31 27.00 -03 23 49.8 19SB235 W84 C~7XM7 2019 09 29.15808 23 31 26.84 -03 23 50.7 19SB235 W84 C~7XM7 2020 10 21.004397 23 34 17.371 -02 24 49.95 23.9r 19SB235 W84 C~7XM7 2020 10 21.174149 23 34 16.691 -02 24 53.19 23.9r 19SB235 W84 C~7XM7 2021 10 01.020278 23 40 17.232 -01 09 41.96 23.8r 19SB235 W84 C~7XM7 2021 10 01.164836 23 40 16.519 -01 09 45.75 23.8r 19SB235 W84 C~7XM7
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 0.02 0.00 -0.07
2 0.0005 -13.29 -0.02 1.09 -0.06
3 0.0872 -2455.47 0.12 184.36 0.10
4 0.0874 -2460.69 -0.05 184.75 0.08
5 0.0875 -2463.24 -0.08 184.87 -0.02
6 1.1493 1282.43 0.01 2428.84 -0.04
7 1.1498 1271.79 -0.01 2429.89 0.00
8 2.0939 8026.62 0.09 4435.98 0.05
9 2.0943 8015.29 -0.09 4436.73 -0.04
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.
19SB235 quality flag:3 Type: SCATEXTD SCATEXTD SCATEXTD axisobj 43.182 43.217 43.148 ecceobj 0.099 0.100 0.098 incobj 21.662 21.663 21.662 qmin 38.043 37.787 38.029 qmax 48.370 48.762 48.240 amean 43.069 43.124 43.039 amin 42.722 42.766 42.697 amax 43.438 43.527 43.392 emean 0.100 0.105 0.099 emin 0.087 0.088 0.087 emax 0.114 0.121 0.113 imean 22.108 22.075 22.109 imin 21.684 21.643 21.696 imax 22.506 22.524 22.504 excite_mean 0.389 0.390 0.389 fracstop 1.000 1.000 1.000 cjmean 2.904 2.904 2.904 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 170.8 178.2 170.3 kozaiamp 180.0 179.9 179.9