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: 16SR105 # Created Fri Nov 22 02:10:46 2024 # Orbit generated from Bernstein formalism # Fitting 10 observations of 10 # Arc: 4.23y # First observation: 2013/10/13 # Last observation: 2018/01/05 Preliminary a, adot, b, bdot, g, gdot: -0.000817 0.032374 -0.000001 -0.000827 0.031905 0.000000 # Chi-squared of fit: 5.31 DOF: 14 RMS: 0.13 # Min/Max residuals: -0.23 0.27 # Exact a, adot, b, bdot, g, gdot: 1.602754E-05 3.006733E-02 -4.808209E-08 -7.503403E-04 2.970515E-02 -1.905882E-02 # Covariance matrix: 1.4669E-12 -8.8387E-13 4.4850E-15 8.3788E-15 -4.3164E-13 -4.1073E-12 -8.8387E-13 1.2860E-12 -2.1738E-14 -5.7814E-15 7.1134E-13 9.2443E-12 4.4850E-15 -2.1738E-14 1.1858E-12 -3.2352E-13 1.8642E-14 -2.5850E-13 8.3788E-15 -5.7814E-15 -3.2352E-13 1.0015E-13 -3.4247E-14 4.1831E-14 -4.3164E-13 7.1134E-13 1.8642E-14 -3.4247E-14 9.4418E-13 4.0751E-12 -4.1073E-12 9.2443E-12 -2.5850E-13 4.1831E-14 4.0751E-12 7.6074E-11 # lat0 lon0 xBary yBary zBary JD0 -19.239720 28.930560 0.159375 -0.324317 -0.929617 2456578.748628 # Heliocentric elements and errors Epoch: 2456570.5000 = 2013/10/05 Mean Anomaly: 326.58946 +/- 0.025 Argument of Peri: 6.85772 +/- 0.007 Long of Asc Node: 122.44687 +/- 0.002 Inclination: 18.74000 +/- 0.000 Eccentricity: 0.58374680 +/- 0.0003 Semi-Major Axis: 46.92423144 +/- 0.0227 Time of Perihelion: 2467466.7039 +/- 2.4 Perihelion: 19.53236153 +/- 0.0157 Aphelion: 74.31610136 +/- 0.0381 Period (y) 321.4430 +/- 0.23 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 28.75560119 +/- 0.0009 Ecliptic Y 15.71518039 +/- 0.0005 Ecliptic Z -11.09311452 +/- 0.0004 Ecliptic XDOT -0.00281822 +/- 0.0000 Ecliptic YDOT 0.00161063 +/- 0.0000 Ecliptic ZDOT 0.00051368 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 34.59636808 +/- 0.0008 Geocenter to KBO 33.66420194 +/- 0.0011 # Hcoef: 8.24
The following table shows the complete astrometric record for 16SR105. 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 (16SR105) followed by the observatory code and reference code for the source of the astrometry.
2013 10 13.24785 02 14 36.803 -06 55 47.18 23.3i 16SR105 W84 C~52Zw 2016 09 22.39683 02 37 05.166 -04 52 54.75 23.0z 16SR105 W84 C~52Zw 2016 10 22.20611 02 34 32.942 -05 12 24.74 22.6i 16SR105 W84 C~52Zw 2016 11 03.19439 02 33 21.836 -05 18 22.02 23.4r 16SR105 W84 C~52Zw 2016 12 31.11584 02 28 47.846 -05 20 30.02 23.8r 16SR105 W84 C~52Zw 2016 12 31.11720 02 28 47.848 -05 20 30.27 23.1i 16SR105 W84 C~52Zw 2017 11 29.16175 02 38 17.363 -04 45 59.54 22.5z 16SR105 W84 C~52Zw 2017 12 25.09006 02 36 21.699 -04 43 41.50 23.8r 16SR105 W84 C~52Zw 2018 01 05.07378 02 35 51.947 -04 39 44.22 23.3r 16SR105 W84 C~52Zw 2018 01 05.07516 02 35 51.947 -04 39 44.06 23.7i 16SR105 W84 C~52Zw
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 -0.00 0.00 -0.07
2 2.9436 21501.02 -0.08 -266.25 -0.06
3 3.0252 18933.45 -0.07 -540.79 0.19
4 3.0580 17805.00 0.27 -492.55 0.26
5 3.2166 13915.15 -0.05 856.28 0.06
6 3.2166 13915.09 -0.07 856.03 -0.23
7 4.1284 22670.52 0.18 -267.88 0.04
8 4.1994 21089.66 -0.05 487.75 -0.02
9 4.2295 20756.62 -0.10 871.00 -0.13
10 4.2295 20756.68 -0.02 871.15 -0.04
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.
16SR105 quality flag:3 Type: CENTAURR CENTAURR CENTAURR axisobj 47.047 47.104 46.990 ecceobj 0.582 0.582 0.581 incobj 18.736 18.736 18.736 qmin 19.337 19.278 19.275 qmax 80.348 80.795 75.619 amean 47.759 47.943 46.463 amin 46.369 46.790 45.024 amax 49.949 50.194 47.577 emean 0.590 0.592 0.579 emin 0.575 0.578 0.560 emax 0.609 0.610 0.589 imean 17.151 17.161 17.316 imin 16.932 16.995 17.130 imax 17.310 17.339 17.606 excite_mean 0.660 0.661 0.651 fracstop 0.004 0.005 0.007 cjmean 2.576 2.574 2.585 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 10.6 12.2 12.1 kozaiamp 4.2 6.2 5.9