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: 19SO235 # Created Tue Apr 1 01:11:16 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: 0.000005 0.024586 -0.000000 0.000704 0.024632 0.000000 # Chi-squared of fit: 2.32 DOF: 10 RMS: 0.10 # Min/Max residuals: -0.16 0.26 # Exact a, adot, b, bdot, g, gdot: 1.549244E-05 2.457898E-02 6.274057E-07 7.045403E-04 2.459677E-02 -1.483222E-04 # Covariance matrix: 7.3952E-13 6.3443E-13 -3.1933E-15 1.8312E-14 1.6428E-12 1.3699E-11 6.3443E-13 4.9245E-12 -1.9744E-14 1.4473E-13 5.2950E-12 1.0220E-10 -3.1933E-15 -1.9744E-14 3.5393E-13 -2.0581E-13 -2.1318E-14 -4.3841E-13 1.8312E-14 1.4473E-13 -2.0581E-13 2.5238E-13 1.4125E-13 3.3146E-12 1.6428E-12 5.2950E-12 -2.1318E-14 1.4125E-13 8.0342E-12 1.0201E-10 1.3699E-11 1.0220E-10 -4.3841E-13 3.3146E-12 1.0201E-10 2.3255E-09 # lat0 lon0 xBary yBary zBary JD0 -2.104915 -8.163157 0.263495 -0.035591 -0.968512 2458725.713221 # Heliocentric elements and errors Epoch: 2458720.5000 = 2019/08/25 Mean Anomaly: 350.82240 +/- 1.846 Argument of Peri: 318.64339 +/- 2.072 Long of Asc Node: 43.05026 +/- 0.020 Inclination: 2.62286 +/- 0.001 Eccentricity: 0.05603730 +/- 0.0005 Semi-Major Axis: 44.06280843 +/- 0.0154 Time of Perihelion: 2461444.0360 +/- 547.7 Perihelion: 41.59364745 +/- 0.0255 Aphelion: 46.53196940 +/- 0.0266 Period (y) 292.4937 +/- 0.15 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 41.14143676 +/- 0.0046 Ecliptic Y -6.17433091 +/- 0.0007 Ecliptic Z -1.49323799 +/- 0.0002 Ecliptic XDOT 0.00038346 +/- 0.0000 Ecliptic YDOT 0.00271067 +/- 0.0000 Ecliptic ZDOT 0.00007875 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 41.62895556 +/- 0.0046 Geocenter to KBO 40.65575103 +/- 0.0047 # Hcoef: 9.18
The following table shows the complete astrometric record for 19SO235. 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 (19SO235) followed by the observatory code and reference code for the source of the astrometry.
2019 08 30.212420 23 33 20.595 -05 10 18.36 25.2r 19SO235 W84 C~7XM8 2019 08 30.387214 23 33 19.828 -05 10 23.32 25.2r 19SO235 W84 C~7XM8 2019 09 28.012277 23 31 12.817 -05 23 47.36 25.2r 19SO235 W84 C~7XM8 2019 09 28.177548 23 31 12.087 -05 23 51.80 25.2r 19SO235 W84 C~7XM8 2020 10 18.012125 23 34 56.209 -04 56 35.96 25.4r 19SO235 W84 C~7XM8 2020 10 18.176134 23 34 55.584 -04 56 39.07 25.4r 19SO235 W84 C~7XM8 2021 10 06.002765 23 40 52.830 -04 15 56.71 25.3r 19SO235 W84 C~7XM8 2021 10 06.167954 23 40 52.131 -04 16 01.16 25.3r 19SO235 W84 C~7XM8
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 0.06 0.00 -0.04
2 0.0005 -12.49 -0.07 -0.03 -0.07
3 0.0788 -2072.95 -0.03 10.58 0.05
4 0.0793 -2084.72 0.03 10.80 0.02
5 1.1357 1637.47 -0.02 190.08 -0.16
6 1.1361 1627.66 0.01 190.92 0.26
7 2.1021 7502.94 -0.03 312.79 0.10
8 2.1025 7491.56 0.04 312.87 -0.15
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.
19SO235 quality flag:3 Type: CLASSICAL CLASSICAL CLASSICAL axisobj 44.123 44.161 44.085 ecceobj 0.059 0.059 0.058 incobj 2.621 2.621 2.621 qmin 40.613 40.643 40.611 qmax 47.621 47.614 47.521 amean 43.998 44.036 43.961 amin 43.653 43.694 43.617 amax 44.360 44.396 44.323 emean 0.057 0.058 0.057 emin 0.041 0.041 0.039 emax 0.074 0.073 0.073 imean 1.799 1.808 1.789 imin 1.007 1.025 0.988 imax 2.452 2.452 2.452 excite_mean 0.066 0.066 0.065 fracstop 1.000 1.000 1.000 cjmean 3.096 3.097 3.096 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 189.4 192.9 187.6 kozaiamp 180.0 180.0 179.9