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: 19SO204 # Created Wed Dec 25 02:11:04 2024 # Orbit generated from Bernstein formalism # Fitting 9 observations of 9 # Arc: 3.16y # First observation: 2019/09/24 # Last observation: 2022/11/20 Preliminary a, adot, b, bdot, g, gdot: 0.000022 0.016110 -0.000007 -0.001065 0.018470 0.000000 # Chi-squared of fit: 3.49 DOF: 12 RMS: 0.11 # Min/Max residuals: -0.26 0.25 # Exact a, adot, b, bdot, g, gdot: 1.308863E-05 1.580637E-02 -9.001203E-07 -1.045600E-03 1.836152E-02 -9.925480E-03 # Covariance matrix: 4.3759E-13 -2.0184E-13 -1.2533E-14 3.4834E-15 1.6417E-13 -1.8438E-12 -2.0184E-13 1.8932E-12 1.0774E-14 -1.1220E-13 8.2525E-13 4.7943E-11 -1.2533E-14 1.0774E-14 3.5398E-13 -1.4265E-13 -2.3005E-14 3.2384E-13 3.4834E-15 -1.1220E-13 -1.4265E-13 1.1230E-13 -5.2410E-14 -3.0078E-12 1.6417E-13 8.2525E-13 -2.3005E-14 -5.2410E-14 8.2171E-13 2.1578E-11 -1.8438E-12 4.7943E-11 3.2384E-13 -3.0078E-12 2.1578E-11 1.2862E-09 # lat0 lon0 xBary yBary zBary JD0 -13.044078 13.598062 0.215607 -0.220476 -0.951797 2458750.829701 # Heliocentric elements and errors Epoch: 2458750.5000 = 2019/09/24 Mean Anomaly: 340.61854 +/- 0.158 Argument of Peri: 340.96536 +/- 0.025 Long of Asc Node: 119.46958 +/- 0.005 Inclination: 13.32118 +/- 0.000 Eccentricity: 0.65443721 +/- 0.0024 Semi-Major Axis: 100.62305196 +/- 0.5365 Time of Perihelion: 2478599.0416 +/- 30.1 Perihelion: 34.77158207 +/- 0.3006 Aphelion: 166.47452186 +/- 0.9186 Period (y) 1009.3794 +/- 8.07 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 52.57228838 +/- 0.0025 Ecliptic Y 12.48730159 +/- 0.0006 Ecliptic Z -12.29212249 +/- 0.0006 Ecliptic XDOT -0.00198120 +/- 0.0000 Ecliptic YDOT 0.00194441 +/- 0.0000 Ecliptic ZDOT 0.00018192 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 55.41547150 +/- 0.0024 Geocenter to KBO 54.46171519 +/- 0.0027 # Hcoef: 6.98
The following table shows the complete astrometric record for 19SO204. 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 (19SO204) followed by the observatory code and reference code for the source of the astrometry.
2019 09 24.32890 01 10 18.064 -06 39 34.12 24.5r 19SO204 807 C~6EqG 2019 09 26.35071 01 10 11.375 -06 40 23.90 24.6r 19SO204 807 C~6EqG 2019 11 29.04599 01 06 51.811 -06 56 00.36 24.1r 19SO204 304 C~6EqG 2019 11 30.04465 01 06 49.708 -06 56 01.14 24.2r 19SO204 304 C~6EqG 2021 01 15.06055 01 09 45.563 -06 30 02.67 24.5r 19SO204 304 C~6EqG 2021 09 03.38599 01 18 21.280 -05 54 08.85 24.3r 19SO204 304 C~6EqG 2021 09 03.41084 01 18 21.214 -05 54 09.57 24.3r 19SO204 304 C~6EqG 2022 11 19.02062 01 17 49.126 -06 00 31.07 24.2r 19SO204 304 C~6EqG 2022 11 20.02261 01 17 46.338 -06 00 38.08 24.1r 19SO204 304 C~6EqG
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 0.11 0.00 -0.00
2 0.0055 -111.17 -0.11 -7.07 -0.26
3 0.1799 -3214.17 -0.04 284.54 -0.01
4 0.1827 -3243.35 0.04 295.96 0.12
5 1.3107 -223.77 0.04 714.87 0.25
6 1.9440 7700.25 0.00 -309.36 0.05
7 1.9441 7699.06 -0.05 -309.63 -0.03
8 3.1532 7108.23 -0.02 -472.58 0.06
9 3.1559 7067.18 0.03 -462.70 -0.17
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.
19SO204 quality flag:3 Type: SCATNEAR SCATNEAR SCATNEAR axisobj 103.217 104.821 101.678 ecceobj 0.662 0.668 0.655 incobj 13.332 13.331 13.332 qmin 33.702 33.078 33.556 qmax 179.604 210.971 188.051 amean 101.896 112.335 103.194 amin 99.008 100.062 98.900 amax 107.289 122.642 111.540 emean 0.659 0.693 0.663 emin 0.642 0.653 0.645 emax 0.675 0.720 0.686 imean 12.005 11.281 11.551 imin 11.588 9.943 10.487 imax 13.233 12.541 12.935 excite_mean 0.691 0.720 0.692 fracstop 1.000 1.000 1.000 cjmean 3.003 2.998 3.007 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 107.1 161.5 168.7 kozaiamp 180.0 180.0 180.0