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: 16TP120 # Created Wed Dec 25 02:10:49 2024 # Orbit generated from Bernstein formalism # Fitting 13 observations of 13 # Arc: 4.19y # First observation: 2016/10/07 # Last observation: 2020/12/17 Preliminary a, adot, b, bdot, g, gdot: 0.000019 0.013916 -0.000023 -0.000057 0.016631 0.000000 # Chi-squared of fit: 6.87 DOF: 20 RMS: 0.13 # Min/Max residuals: -0.29 0.31 # Exact a, adot, b, bdot, g, gdot: 1.369569E-05 1.347415E-02 -1.556838E-06 -5.077980E-05 1.603784E-02 -8.919265E-03 # Covariance matrix: 6.6839E-13 1.0176E-13 -1.8172E-14 -3.2460E-14 7.6634E-13 1.1633E-12 1.0176E-13 2.9843E-12 -1.4269E-13 -2.8464E-14 4.0238E-12 5.1993E-11 -1.8172E-14 -1.4269E-13 3.5162E-13 -1.0898E-13 -2.0785E-13 -2.4644E-12 -3.2460E-14 -2.8464E-14 -1.0898E-13 5.5796E-14 -8.5786E-14 -2.4738E-13 7.6634E-13 4.0238E-12 -2.0785E-13 -8.5786E-14 6.2516E-12 6.7344E-11 1.1633E-12 5.1993E-11 -2.4644E-12 -2.4738E-13 6.7344E-11 9.4417E-10 # lat0 lon0 xBary yBary zBary JD0 -33.099134 36.901172 0.383771 -0.506250 -0.776998 2457668.861129 # Heliocentric elements and errors Epoch: 2457660.5000 = 2016/09/29 Mean Anomaly: 349.77028 +/- 0.156 Argument of Peri: 351.15181 +/- 0.026 Long of Asc Node: 126.80551 +/- 0.003 Inclination: 32.64175 +/- 0.000 Eccentricity: 0.75831225 +/- 0.0028 Semi-Major Axis: 165.35814964 +/- 1.6714 Time of Perihelion: 2479730.2925 +/- 30.3 Perihelion: 39.96503879 +/- 0.6086 Aphelion: 290.75126050 +/- 2.9738 Period (y) 2126.4081 +/- 32.24 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 42.73828151 +/- 0.0065 Ecliptic Y 31.61066589 +/- 0.0049 Ecliptic Z -34.05017478 +/- 0.0053 Ecliptic XDOT -0.00240300 +/- 0.0000 Ecliptic YDOT 0.00106382 +/- 0.0000 Ecliptic ZDOT 0.00082419 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 63.12851422 +/- 0.0058 Geocenter to KBO 62.35251722 +/- 0.0097 # Hcoef: 7.02
The following table shows the complete astrometric record for 16TP120. 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 (16TP120) followed by the observatory code and reference code for the source of the astrometry.
2016 10 07.36034 03 01 29.828 -17 30 51.62 25.0r 16TP120 807 C~3wqx 2016 10 08.29639 03 01 27.292 -17 31 15.96 24.9r 16TP120 807 C~3wqx 2017 11 22.06922 03 02 08.087 -17 27 28.51 24.9r 16TP120 304 C~3wqx 2017 11 23.04722 03 02 04.859 -17 27 31.53 24.5r 16TP120 304 C~3wqx 2017 12 13.12640 03 01 03.432 -17 26 22.45 25.1r 16TP120 304 C~3wqx 2017 12 14.11899 03 01 00.733 -17 26 12.73 25.0r 16TP120 304 C~3wqx 2017 12 15.17753 03 00 57.846 -17 26 01.39 25.0r 16TP120 304 C~3wqx 2019 12 27.09362 03 06 42.664 -16 51 36.51 16TP120 304 C~3wqx 2019 12 27.10854 03 06 42.642 -16 51 36.23 16TP120 304 C~3wqx 2019 12 27.15452 03 06 42.536 -16 51 35.32 16TP120 304 C~3wqx 2019 12 28.09751 03 06 40.426 -16 51 18.73 16TP120 304 C~3wqx 2020 12 16.22630 03 10 19.318 -16 37 22.49 24.9r 16TP120 304 C~5ZdE 2020 12 17.22273 03 10 16.570 -16 37 11.00 25. r 16TP120 304 C~5ZdE
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 -0.08 0.00 0.31
2 0.0026 -42.32 0.17 -10.85 0.03
3 1.1245 583.77 -0.11 8.66 -0.07
4 1.1271 539.23 -0.09 21.25 -0.06
5 1.1821 -266.36 0.10 379.65 -0.08
6 1.1848 -299.54 0.19 401.68 -0.29
7 1.1877 -334.73 -0.25 426.12 0.00
8 3.2190 5015.21 -0.07 708.10 -0.00
9 3.2190 5015.00 0.11 708.47 -0.04
10 3.2191 5013.88 0.14 709.84 0.06
11 3.2217 4991.02 -0.03 735.75 0.08
12 4.1913 8235.05 -0.01 446.15 -0.03
13 4.1940 8201.87 -0.07 470.55 0.09
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.
16TP120 quality flag:3 Type: SCATNEAR SCATNEAR SCATNEAR axisobj 171.555 176.839 166.627 ecceobj 0.764 0.772 0.756 incobj 32.635 32.635 32.635 qmin 37.267 38.057 38.302 qmax 309.687 322.039 300.948 amean 166.610 173.086 163.168 amin 161.765 168.040 158.202 amax 174.474 180.958 170.606 emean 0.761 0.769 0.754 emin 0.750 0.759 0.743 emax 0.777 0.781 0.767 imean 30.703 31.038 31.016 imin 29.225 30.183 30.084 imax 31.775 31.794 31.730 excite_mean 0.917 0.926 0.913 fracstop 1.000 1.000 1.000 cjmean 2.803 2.799 2.808 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 77.4 75.5 62.5 kozaiamp 180.0 180.0 180.0