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: 16TL176 # Created Wed Apr 17 01:18:08 2024 # Orbit generated from Bernstein formalism # Fitting 9 observations of 9 # Arc: 3.07y # First observation: 2015/10/22 # Last observation: 2018/11/15 Preliminary a, adot, b, bdot, g, gdot: 0.000131 0.030129 0.000024 -0.000628 0.027659 0.000000 # Chi-squared of fit: 4.77 DOF: 12 RMS: 0.13 # Min/Max residuals: -0.17 0.30 # Exact a, adot, b, bdot, g, gdot: 1.791519E-05 3.043243E-02 4.560518E-07 -5.955871E-04 2.723231E-02 2.941394E-03 # Covariance matrix: 1.3078E-12 -1.5321E-12 -1.0525E-14 1.9623E-14 -7.6551E-13 -1.3018E-11 -1.5321E-12 2.5563E-12 -1.6479E-15 -1.2039E-14 8.8544E-13 2.6451E-11 -1.0525E-14 -1.6479E-15 6.3424E-13 -3.2643E-13 6.9488E-14 -1.7634E-13 1.9623E-14 -1.2039E-14 -3.2643E-13 2.2769E-13 -8.7035E-14 4.8887E-14 -7.6551E-13 8.8544E-13 6.9488E-14 -8.7035E-14 2.2255E-12 5.7938E-12 -1.3018E-11 2.6451E-11 -1.7634E-13 4.8887E-14 5.7938E-12 3.0953E-10 # lat0 lon0 xBary yBary zBary JD0 -21.750050 8.929601 -0.328790 -0.349385 -0.876289 2457317.645969 # Heliocentric elements and errors Epoch: 2457310.5000 = 2015/10/15 Mean Anomaly: 21.66032 +/- 0.080 Argument of Peri: 233.33053 +/- 0.141 Long of Asc Node: 102.22235 +/- 0.003 Inclination: 21.24095 +/- 0.000 Eccentricity: 0.22089871 +/- 0.0005 Semi-Major Axis: 46.75537331 +/- 0.0169 Time of Perihelion: 2450284.5017 +/- 25.7 Perihelion: 36.42717158 +/- 0.0253 Aphelion: 57.08357505 +/- 0.0299 Period (y) 319.7095 +/- 0.17 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 34.57066321 +/- 0.0018 Ecliptic Y 5.76506180 +/- 0.0003 Ecliptic Z -13.60733337 +/- 0.0007 Ecliptic XDOT -0.00022705 +/- 0.0000 Ecliptic YDOT 0.00305508 +/- 0.0000 Ecliptic ZDOT -0.00016515 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 37.59689101 +/- 0.0017 Geocenter to KBO 36.72109106 +/- 0.0020 # Hcoef: 8.28
The following table shows the complete astrometric record for 16TL176. 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 (16TL176) followed by the observatory code and reference code for the source of the astrometry.
2015 10 22.14518 01 07 48.343 -16 25 02.65 24.0i 16TL176 W84 C~55aS 2016 10 02.20569 01 16 03.979 -15 35 19.28 23.6i 16TL176 W84 C~55aS 2016 10 02.20708 01 16 03.975 -15 35 18.97 23.7r 16TL176 W84 C~55aS 2016 10 23.14689 01 14 17.590 -15 44 28.25 24.5r 16TL176 W84 C~55aS 2016 10 23.14827 01 14 17.601 -15 44 28.03 24.2g 16TL176 W84 C~55aS 2017 09 25.24972 01 23 11.212 -14 49 17.32 23.8r 16TL176 W84 C~55aS 2017 11 16.11634 01 18 59.694 -15 06 52.58 23.7i 16TL176 W84 C~55aS 2017 11 23.09948 01 18 32.464 -15 06 31.37 24.3r 16TL176 W84 C~55aS 2018 11 15.21490 01 25 31.168 -14 25 11.27 23.9i 16TL176 W84 C~55aS
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 -0.05 0.00 -0.17
2 0.9475 7743.82 -0.16 -244.95 -0.17
3 0.9475 7743.90 0.03 -244.64 0.13
4 1.0048 6116.59 -0.04 -101.71 0.09
5 1.0048 6116.82 0.30 -101.58 0.20
6 1.9277 14536.15 -0.00 -354.30 -0.09
7 2.0697 10773.53 0.02 236.17 -0.03
8 2.0889 10423.97 -0.15 421.83 0.11
9 3.0666 17004.94 0.04 86.56 -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.
16TL176 quality flag:3 Type: SCATNEAR SCATNEAR SCATNEAR axisobj 47.342 47.400 47.285 ecceobj 0.230 0.231 0.229 incobj 21.247 21.247 21.247 qmin 35.690 35.653 35.763 qmax 58.860 59.005 58.715 amean 47.034 47.091 46.973 amin 46.618 46.658 46.559 amax 47.562 47.613 47.510 emean 0.221 0.222 0.220 emin 0.205 0.206 0.204 emax 0.239 0.240 0.237 imean 19.646 19.645 19.647 imin 19.194 19.193 19.202 imax 20.243 20.255 20.241 excite_mean 0.403 0.403 0.402 fracstop 1.000 1.000 1.000 cjmean 2.936 2.936 2.936 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 189.2 187.1 190.7 kozaiamp 180.0 180.0 180.0