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: 16TQ120 # Created Mon Apr 28 01:11:01 2025 # Orbit generated from Bernstein formalism # Fitting 6 observations of 6 # Arc: 1.20y # First observation: 2016/10/06 # Last observation: 2017/12/17 Preliminary a, adot, b, bdot, g, gdot: -0.000001 0.011801 0.000000 0.002306 0.015622 0.000000 # WARNING Fitting with energy constraint # Chi-squared of fit: 4.04 DOF: 7 RMS: 0.15 # Min/Max residuals: -0.31 0.30 # Exact a, adot, b, bdot, g, gdot: 1.162601E-05 1.192333E-02 2.529258E-06 2.324190E-03 1.578559E-02 5.219324E-03 # Covariance matrix: 9.9663E-13 2.4920E-11 4.7248E-14 4.7912E-12 3.4144E-11 1.8134E-09 2.4920E-11 2.4945E-09 4.6662E-12 4.6444E-10 3.3310E-09 1.7625E-07 4.7248E-14 4.6662E-12 7.4280E-13 2.1970E-13 6.2259E-12 3.2577E-10 4.7912E-12 4.6444E-10 2.1970E-13 8.8318E-11 6.2079E-10 3.3055E-08 3.4144E-11 3.3310E-09 6.2259E-12 6.2079E-10 4.4496E-09 2.3552E-07 1.8134E-09 1.7625E-07 3.2577E-10 3.3055E-08 2.3552E-07 1.2510E-05 # lat0 lon0 xBary yBary zBary JD0 -37.140661 34.113068 0.354137 -0.566984 -0.748932 2457667.880629 # Heliocentric elements and errors Epoch: 2457660.5000 = 2016/09/29 Mean Anomaly: 48.95765 +/- 24.010 Argument of Peri: 188.00563 +/- 3.446 Long of Asc Node: 106.37914 +/- 0.258 Inclination: 37.91968 +/- 0.041 Eccentricity: 0.41015191 +/- 0.2752 Semi-Major Axis: 73.84981550 +/- 19.5852 Time of Perihelion: 2426136.5489 +/- 9041.9 Perihelion: 43.56017231 +/- 23.3787 Aphelion: 104.13945868 +/- 34.2909 Period (y) 634.6471 +/- 252.47 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 42.78212681 +/- 0.1767 Ecliptic Y 28.55213895 +/- 0.1197 Ecliptic Z -38.24834298 +/- 0.1616 Ecliptic XDOT -0.00035890 +/- 0.0004 Ecliptic YDOT 0.00224649 +/- 0.0003 Ecliptic ZDOT -0.00022526 +/- 0.0004 # Distances at JD0 (AU) Heliocenter to KBO 64.09735371 +/- 0.1614 Geocenter to KBO 63.34891750 +/- 0.2677 # Hcoef: 6.57
The following table shows the complete astrometric record for 16TQ120. 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 (16TQ120) followed by the observatory code and reference code for the source of the astrometry.
2016 10 06.37984 02 58 18.758 -22 05 36.48 24.6r 16TQ120 807 C~3wqx 2016 10 07.38153 02 58 15.889 -22 06 02.15 24.7r 16TQ120 807 C~3wqx 2017 11 22.07583 02 58 17.377 -21 54 38.31 24.6r 16TQ120 304 C~3wqx 2017 11 23.05945 02 58 14.111 -21 54 38.83 24.5r 16TQ120 304 C~3wqx 2017 12 16.12754 02 57 03.696 -21 51 39.13 16TQ120 304 C~3wqx 2017 12 17.13777 02 57 01.028 -21 51 23.58 16TQ120 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 0.07 0.00 -0.04
2 0.0027 -46.39 -0.07 -9.82 0.04
3 1.1272 215.97 -0.15 622.03 0.30
4 1.1299 173.30 0.15 637.69 -0.31
5 1.1930 -679.50 0.04 1153.10 0.04
6 1.1958 -708.75 -0.04 1180.78 -0.02
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.
16TQ120 quality flag:0 Type: ERR2LARGE ERR2LARGE ERR2LARGE axisobj 0.000 0.000 0.000 ecceobj -1.000 -1.000 -1.000 incobj -1.000 -1.000 -1.000 qmin 0.000 0.000 0.000 qmax 0.000 0.000 0.000 amean 0.000 0.000 0.000 amin 0.000 0.000 0.000 amax 0.000 0.000 0.000 emean 0.000 0.000 0.000 emin 0.000 0.000 0.000 emax 0.000 0.000 0.000 imean 0.000 0.000 0.000 imin 0.000 0.000 0.000 imax 0.000 0.000 0.000 excite_mean 0.000 0.000 0.000 fracstop 0.000 0.000 0.000 cjmean 0.000 0.000 0.000 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 0.0 0.0 0.0 kozaiamp 0.0 0.0 0.0