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: 19SJ235 # Created Fri Nov 22 02:11:01 2024 # Orbit generated from Bernstein formalism # Fitting 8 observations of 8 # Arc: 2.10y # First observation: 2019/08/28 # Last observation: 2021/10/03 Preliminary a, adot, b, bdot, g, gdot: -0.000004 0.020846 -0.000002 0.006658 0.023465 0.000000 # Chi-squared of fit: 12.05 DOF: 10 RMS: 0.22 # Min/Max residuals: -0.40 0.42 # Exact a, adot, b, bdot, g, gdot: 1.202714E-05 2.087390E-02 4.119858E-06 6.673178E-03 2.348052E-02 1.011806E-03 # Covariance matrix: 7.3080E-13 4.3382E-13 -2.1206E-14 1.6771E-13 1.4228E-12 1.2391E-11 4.3382E-13 3.3949E-12 -1.4752E-13 1.1647E-12 3.7103E-12 8.6123E-11 -2.1206E-14 -1.4752E-13 3.6303E-13 -2.6419E-13 -1.4987E-13 -4.2261E-12 1.6771E-13 1.1647E-12 -2.6419E-13 7.0081E-13 1.1841E-12 3.3361E-11 1.4228E-12 3.7103E-12 -1.4987E-13 1.1841E-12 6.1958E-12 8.7526E-11 1.2391E-11 8.6123E-11 -4.2261E-12 3.3361E-11 8.7526E-11 2.4671E-09 # lat0 lon0 xBary yBary zBary JD0 -0.320361 -8.634280 0.288408 -0.005377 -0.962314 2458723.711696 # Heliocentric elements and errors Epoch: 2458720.5000 = 2019/08/25 Mean Anomaly: 127.00305 +/- 1.494 Argument of Peri: 227.08302 +/- 1.487 Long of Asc Node: 351.95809 +/- 0.000 Inclination: 17.70704 +/- 0.001 Eccentricity: 0.05555551 +/- 0.0016 Semi-Major Axis: 42.06989961 +/- 0.0113 Time of Perihelion: 2423559.0089 +/- 413.2 Perihelion: 39.73268492 +/- 0.0698 Aphelion: 44.40711430 +/- 0.0700 Period (y) 272.8760 +/- 0.11 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 43.01611766 +/- 0.0045 Ecliptic Y -6.83028524 +/- 0.0007 Ecliptic Z -0.23794847 +/- 0.0000 Ecliptic XDOT 0.00049480 +/- 0.0000 Ecliptic YDOT 0.00238853 +/- 0.0000 Ecliptic ZDOT 0.00077720 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 43.55566318 +/- 0.0044 Geocenter to KBO 42.58850309 +/- 0.0045 # Hcoef: 9.58
The following table shows the complete astrometric record for 19SJ235. 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 (19SJ235) followed by the observatory code and reference code for the source of the astrometry.
2019 08 28.210895 23 28 46.852 -03 43 04.85 25.9r 19SJ235 W84 C~7XM7 2019 08 28.388381 23 28 46.037 -03 43 09.25 25.9r 19SJ235 W84 C~7XM7 2019 09 29.013696 23 26 26.998 -03 55 51.76 25.8r 19SJ235 W84 C~7XM7 2019 09 29.177510 23 26 26.295 -03 55 54.89 25.8r 19SJ235 W84 C~7XM7 2020 10 17.010669 23 29 00.031 -03 13 18.99 25.9r 19SJ235 W84 C~7XM7 2020 10 17.174574 23 28 59.410 -03 13 21.79 25.9r 19SJ235 W84 C~7XM7 2021 10 03.011907 23 33 44.395 -02 18 52.88 25.9r 19SJ235 W84 C~7XM7 2021 10 03.165173 23 33 43.723 -02 18 56.38 25.9r 19SJ235 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 0.42 0.00 0.08
2 0.0005 -12.95 -0.40 0.76 0.12
3 0.0871 -2226.10 -0.24 119.32 -0.35
4 0.0875 -2237.01 0.20 120.58 0.21
5 1.1384 885.23 0.02 1563.58 -0.28
6 1.1388 875.57 0.03 1564.67 0.14
7 2.0994 6091.06 0.07 2883.96 -0.04
8 2.0998 6080.41 -0.09 2884.72 0.12
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.
19SJ235 quality flag:3 Type: SCATEXTD SCATEXTD SCATEXTD axisobj 42.093 42.131 42.056 ecceobj 0.051 0.053 0.050 incobj 17.685 17.686 17.684 qmin 39.038 39.000 38.992 qmax 45.167 45.277 45.168 amean 41.999 42.038 41.967 amin 41.674 41.717 41.642 amax 42.338 42.372 42.302 emean 0.054 0.055 0.053 emin 0.042 0.043 0.041 emax 0.067 0.069 0.068 imean 18.131 18.140 18.121 imin 17.550 17.553 17.536 imax 18.603 18.600 18.593 excite_mean 0.316 0.316 0.316 fracstop 1.000 1.000 1.000 cjmean 2.957 2.958 2.957 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 179.2 179.1 180.0 kozaiamp 180.0 180.0 179.9