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: 16SX105 # Created Fri Apr 26 01:18:05 2024 # Orbit generated from Bernstein formalism # Fitting 11 observations of 11 # Arc: 3.83y # First observation: 2014/12/23 # Last observation: 2018/10/20 Preliminary a, adot, b, bdot, g, gdot: -0.000989 0.033170 -0.000193 0.011327 0.029829 0.000000 # Chi-squared of fit: 2.20 DOF: 16 RMS: 0.08 # Min/Max residuals: -0.17 0.17 # Exact a, adot, b, bdot, g, gdot: 1.790077E-05 3.237571E-02 6.651375E-06 1.107293E-02 2.846957E-02 -2.790186E-03 # Covariance matrix: 1.2341E-12 -8.6987E-13 7.2698E-14 -1.7313E-13 -4.0744E-13 -4.4592E-12 -8.6987E-13 9.5500E-13 -1.2150E-13 2.3798E-13 3.0740E-13 6.1915E-12 7.2698E-14 -1.2150E-13 7.3399E-13 -2.9726E-13 -9.1002E-15 -9.0562E-13 -1.7313E-13 2.3798E-13 -2.9726E-13 1.8605E-13 8.8462E-14 1.7610E-12 -4.0744E-13 3.0740E-13 -9.1002E-15 8.8462E-14 5.3664E-13 2.1979E-12 -4.4592E-12 6.1915E-12 -9.0562E-13 1.7610E-12 2.1979E-12 4.5834E-11 # lat0 lon0 xBary yBary zBary JD0 -31.043023 17.212782 -0.942639 -0.143176 -0.238272 2457014.590808 # Heliocentric elements and errors Epoch: 2457010.5000 = 2014/12/19 Mean Anomaly: 352.91339 +/- 0.024 Argument of Peri: 313.42443 +/- 0.048 Long of Asc Node: 73.95061 +/- 0.001 Inclination: 36.05952 +/- 0.000 Eccentricity: 0.30458295 +/- 0.0001 Semi-Major Axis: 50.52133315 +/- 0.0079 Time of Perihelion: 2459592.4422 +/- 8.8 Perihelion: 35.13339663 +/- 0.0076 Aphelion: 65.90926966 +/- 0.0116 Period (y) 359.1041 +/- 0.08 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 28.73044465 +/- 0.0007 Ecliptic Y 9.88984849 +/- 0.0003 Ecliptic Z -18.11329851 +/- 0.0005 Ecliptic XDOT -0.00062045 +/- 0.0000 Ecliptic YDOT 0.00306333 +/- 0.0000 Ecliptic ZDOT 0.00105082 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 35.37427223 +/- 0.0006 Geocenter to KBO 35.12522722 +/- 0.0009 # Hcoef: 7.71
The following table shows the complete astrometric record for 16SX105. 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 (16SX105) followed by the observatory code and reference code for the source of the astrometry.
2014 12 23.09003 01 52 33.874 -21 51 21.88 24.6g 16SX105 W84 C~55a1 2015 11 05.17893 02 02 18.470 -20 47 17.71 23.4g 16SX105 W84 C~55a1 2016 09 23.24248 02 12 19.698 -19 05 30.92 23.5r 16SX105 W84 C~55a1 2016 09 24.23140 02 12 15.057 -19 06 11.28 23.2g 16SX105 W84 C~55a1 2017 01 30.04610 02 04 23.480 -18 31 28.23 22.9i 16SX105 W84 C~55a1 2017 01 30.04748 02 04 23.484 -18 31 28.06 22.7r 16SX105 W84 C~55a1 2017 12 07.19677 02 11 36.544 -17 54 24.45 23.0i 16SX105 W84 C~55a1 2017 12 10.13624 02 11 24.388 -17 53 03.69 23.0r 16SX105 W84 C~55a1 2017 12 12.12688 02 11 16.561 -17 52 04.22 23.9g 16SX105 W84 C~55a1 2017 12 22.10507 02 10 42.800 -17 46 05.87 22.7i 16SX105 W84 C~55a1 2018 10 20.32428 02 21 54.586 -16 29 03.48 23.5i 16SX105 W84 C~55a1
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 -0.10
2 0.8681 9033.10 -0.07 92.80 0.17
3 1.7526 19364.31 0.04 1965.16 0.08
4 1.7553 19286.82 -0.01 1957.51 -0.17
5 2.1053 14111.99 0.02 6737.27 -0.05
6 2.1053 14112.11 0.07 6737.40 0.01
7 2.9572 20688.04 -0.07 6094.84 -0.07
8 2.9652 20565.87 0.02 6243.71 0.10
9 2.9707 20490.47 -0.07 6346.32 -0.01
10 2.9980 20209.72 0.02 6881.15 0.12
11 3.8254 31063.86 0.02 6807.82 -0.10
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.
16SX105 quality flag:3 Type: SCATNEAR SCATNEAR SCATNEAR axisobj 51.140 51.163 51.117 ecceobj 0.313 0.313 0.312 incobj 36.061 36.061 36.061 qmin 34.081 34.047 34.078 qmax 68.065 68.191 68.026 amean 50.699 50.755 50.700 amin 50.202 50.280 50.214 amax 51.317 51.371 51.338 emean 0.305 0.306 0.305 emin 0.286 0.286 0.285 emax 0.326 0.328 0.326 imean 34.743 34.733 34.750 imin 34.230 34.216 34.250 imax 35.348 35.343 35.316 excite_mean 0.646 0.647 0.646 fracstop 1.000 1.000 1.000 cjmean 2.625 2.625 2.625 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 171.0 170.3 171.1 kozaiamp 179.9 180.0 180.0