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: 16TN120 # Created Sun Dec 22 02:10:53 2024 # Orbit generated from Bernstein formalism # Fitting 11 observations of 11 # Arc: 1.19y # First observation: 2016/10/06 # Last observation: 2017/12/14 Preliminary a, adot, b, bdot, g, gdot: 0.000002 0.012345 -0.000006 -0.001194 0.016654 0.000000 # Chi-squared of fit: 8.67 DOF: 16 RMS: 0.16 # Min/Max residuals: -0.28 0.35 # Exact a, adot, b, bdot, g, gdot: 1.092564E-05 1.240231E-02 -1.244939E-06 -1.203472E-03 1.676010E-02 -1.070417E-03 # Covariance matrix: 5.7903E-13 6.2127E-14 -6.1877E-14 6.2714E-15 7.7305E-13 5.2278E-11 6.2127E-14 1.0091E-12 -7.7268E-14 2.7782E-14 1.0120E-12 9.0542E-11 -6.1877E-14 -7.7268E-14 3.0929E-13 -2.8690E-13 -1.6999E-13 -1.1887E-11 6.2714E-15 2.7782E-14 -2.8690E-13 5.0909E-13 3.3353E-14 7.8439E-12 7.7305E-13 1.0120E-12 -1.6999E-13 3.3353E-14 2.1615E-12 1.6404E-10 5.2278E-11 9.0542E-11 -1.1887E-11 7.8439E-12 1.6404E-10 1.8449E-08 # lat0 lon0 xBary yBary zBary JD0 -29.389276 24.644026 0.196026 -0.482998 -0.857983 2457667.807539 # Heliocentric elements and errors Epoch: 2457660.5000 = 2016/09/29 Mean Anomaly: 215.51912 +/- 2.745 Argument of Peri: 54.27783 +/- 2.694 Long of Asc Node: 125.97433 +/- 0.011 Inclination: 29.43234 +/- 0.001 Eccentricity: 0.17632736 +/- 0.0040 Semi-Major Axis: 52.53383397 +/- 0.0812 Time of Perihelion: 2513477.3009 +/- 1052.6 Perihelion: 43.27068148 +/- 0.2190 Aphelion: 61.79698645 +/- 0.2294 Period (y) 380.7736 +/- 0.88 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 48.22449682 +/- 0.0042 Ecliptic Y 21.90707846 +/- 0.0019 Ecliptic Z -29.28041318 +/- 0.0026 Ecliptic XDOT -0.00106904 +/- 0.0000 Ecliptic YDOT 0.00173083 +/- 0.0000 Ecliptic ZDOT -0.00008552 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 60.52160586 +/- 0.0036 Geocenter to KBO 59.66552528 +/- 0.0052 # Hcoef: 6.33
The following table shows the complete astrometric record for 16TN120. 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 (16TN120) followed by the observatory code and reference code for the source of the astrometry.
2016 10 06.30675 02 14 52.578 -17 48 06.82 24.3r 16TN120 807 C~3wqx 2016 10 07.25680 02 14 49.517 -17 48 30.57 24.1r 16TN120 807 C~3wqx 2016 11 02.13545 02 13 21.401 -17 56 37.91 16TN120 304 C~3wqx 2016 11 03.07828 02 13 18.126 -17 56 49.21 16TN120 304 C~3wqx 2016 12 30.07040 02 10 47.098 -17 51 33.09 16TN120 304 C~3wqx 2016 12 30.15075 02 10 46.989 -17 51 31.49 16TN120 304 C~3wqx 2017 10 18.25221 02 17 05.712 -17 40 10.39 24.0r 16TN120 304 C~3wqx 2017 10 18.32453 02 17 05.434 -17 40 11.87 23.9r 16TN120 304 C~3wqx 2017 12 13.06681 02 14 08.919 -17 44 26.07 16TN120 304 C~3wqx 2017 12 13.17679 02 14 08.660 -17 44 24.90 16TN120 304 C~3wqx 2017 12 14.06042 02 14 06.614 -17 44 13.36 16TN120 304 C~3wqx
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 0.16 0.00 0.02
2 0.0026 -49.46 -0.28 -5.37 0.11
3 0.0735 -1398.27 0.10 20.04 -0.13
4 0.0760 -1445.82 0.01 27.24 -0.20
5 0.2321 -3324.52 0.06 1131.28 0.20
6 0.2323 -3325.36 -0.03 1133.35 0.05
7 1.0320 1940.18 0.15 -284.41 -0.16
8 1.0322 1935.94 -0.22 -284.25 -0.03
9 1.1848 -493.31 0.13 440.79 -0.02
10 1.1851 -496.30 0.08 443.27 -0.20
11 1.1876 -518.98 -0.16 465.03 0.35
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.
16TN120 quality flag:3 Type: SCATEXTD SCATEXTD SCATEXTD axisobj 53.140 53.411 52.947 ecceobj 0.164 0.178 0.154 incobj 29.420 29.418 29.422 qmin 42.876 42.266 43.383 qmax 63.162 64.412 62.304 amean 52.808 53.097 52.626 amin 52.340 52.617 52.163 amax 53.333 53.645 53.147 emean 0.171 0.186 0.160 emin 0.157 0.171 0.147 emax 0.185 0.201 0.172 imean 27.961 27.927 27.980 imin 27.724 27.664 27.765 imax 28.260 28.263 28.243 excite_mean 0.499 0.504 0.496 fracstop 1.000 1.000 1.000 cjmean 2.876 2.874 2.878 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 162.9 161.2 165.0 kozaiamp 180.0 180.0 180.0