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: 16TO120 # Created Sat Apr 20 01:18:08 2024 # Orbit generated from Bernstein formalism # Fitting 9 observations of 9 # Arc: 1.20y # First observation: 2016/10/06 # Last observation: 2017/12/17 Preliminary a, adot, b, bdot, g, gdot: -0.000020 0.012200 -0.000001 0.004543 0.016872 0.000000 # Chi-squared of fit: 23.10 DOF: 12 RMS: 0.28 # Min/Max residuals: -0.47 0.55 # Exact a, adot, b, bdot, g, gdot: 1.150834E-05 1.228705E-02 3.018252E-06 4.590506E-03 1.702148E-02 4.182854E-03 # Covariance matrix: 4.1819E-13 -1.3236E-13 -5.9581E-14 6.6977E-13 6.5431E-13 9.1503E-11 -1.3236E-13 2.5885E-12 3.0484E-13 -5.6427E-12 -1.3190E-12 -7.1548E-10 -5.9581E-14 3.0484E-13 3.3594E-13 -1.6876E-12 -5.7666E-13 -1.8549E-10 6.6977E-13 -5.6427E-12 -1.6876E-12 2.4643E-11 8.7196E-12 3.0700E-09 6.5431E-13 -1.3190E-12 -5.7666E-13 8.7196E-12 4.2847E-12 1.1353E-09 9.1503E-11 -7.1548E-10 -1.8549E-10 3.0700E-09 1.1353E-09 3.9479E-07 # lat0 lon0 xBary yBary zBary JD0 -26.560944 33.313065 0.343593 -0.421624 -0.843851 2457667.722449 # Heliocentric elements and errors Epoch: 2457660.5000 = 2016/09/29 Mean Anomaly: 76.28702 +/- 6.708 Argument of Peri: 194.20512 +/- 2.910 Long of Asc Node: 83.08812 +/- 0.007 Inclination: 32.61026 +/- 0.003 Eccentricity: 0.30163494 +/- 0.0400 Semi-Major Axis: 58.49798586 +/- 1.5492 Time of Perihelion: 2423030.0671 +/- 2716.5 Perihelion: 40.85294959 +/- 2.5762 Aphelion: 76.14302212 +/- 3.0875 Period (y) 447.4243 +/- 17.77 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 44.88726391 +/- 0.0054 Ecliptic Y 29.08873725 +/- 0.0035 Ecliptic Z -26.26959628 +/- 0.0032 Ecliptic XDOT -0.00030469 +/- 0.0001 Ecliptic YDOT 0.00215657 +/- 0.0000 Ecliptic ZDOT 0.00035956 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 59.59121399 +/- 0.0046 Geocenter to KBO 58.74928690 +/- 0.0071 # Hcoef: 7.25
The following table shows the complete astrometric record for 16TO120. 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 (16TO120) followed by the observatory code and reference code for the source of the astrometry.
2016 10 06.22166 02 40 14.720 -12 24 22.95 24.7r 16TO120 807 C~3wqx 2016 10 06.35279 02 40 14.328 -12 24 26.24 25.1r 16TO120 807 C~3wqx 2016 10 07.30456 02 40 11.403 -12 24 47.44 25.0r 16TO120 807 C~3wqx 2016 11 02.15252 02 38 43.323 -12 32 31.19 16TO120 304 C~3wqx 2016 11 03.09333 02 38 39.958 -12 32 42.58 16TO120 304 C~3wqx 2016 12 30.08905 02 35 51.514 -12 29 07.36 16TO120 304 C~3wqx 2016 12 30.16511 02 35 51.357 -12 29 05.99 16TO120 304 C~3wqx 2017 12 16.12131 02 38 41.970 -12 04 02.35 16TO120 304 C~3wqx 2017 12 17.13194 02 38 39.384 -12 03 50.22 16TO120 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 -0.02 0.00 0.26
2 0.0004 -6.52 0.14 -1.14 -0.10
3 0.0030 -54.03 0.55 -6.49 0.29
4 0.0737 -1424.87 -0.41 -4.50 0.04
5 0.0763 -1475.08 -0.47 1.48 0.06
6 0.2324 -3724.51 0.26 1037.23 -0.33
7 0.2326 -3726.21 -0.06 1039.29 -0.35
8 1.1934 -864.19 0.26 1609.92 -0.19
9 1.1962 -895.77 -0.24 1634.19 0.32
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.
16TO120 quality flag:1 Type: SCATNEAR SCATNEAR SCATNEAR axisobj 59.293 65.375 55.896 ecceobj 0.301 0.418 0.190 incobj 32.553 32.550 32.555 qmin 39.618 36.062 42.527 qmax 78.986 94.990 69.234 amean 58.873 64.796 55.597 amin 58.286 64.035 55.065 amax 59.620 65.829 56.234 emean 0.309 0.425 0.210 emin 0.293 0.406 0.186 emax 0.325 0.443 0.233 imean 30.878 30.653 30.792 imin 30.520 30.124 30.386 imax 31.316 31.389 31.266 excite_mean 0.599 0.664 0.553 fracstop 1.000 1.000 1.000 cjmean 2.795 2.749 2.825 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 180.8 181.9 201.1 kozaiamp 180.0 180.0 179.9