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: 16SJ56 # Created Sat Apr 20 01:18:04 2024 # Orbit generated from Bernstein formalism # Fitting 16 observations of 16 # Arc: 0.97y # First observation: 2015/10/10 # Last observation: 2016/09/29 Preliminary a, adot, b, bdot, g, gdot: -0.000001 0.031805 -0.000000 -0.003468 0.027861 0.000000 # Chi-squared of fit: 0.63 DOF: 26 RMS: 0.04 # Min/Max residuals: -0.06 0.06 # Exact a, adot, b, bdot, g, gdot: 1.806003E-05 3.183287E-02 -2.245795E-06 -3.468337E-03 2.788225E-02 -1.151611E-04 # Covariance matrix: 2.5913E-13 1.2177E-11 1.1718E-14 -1.2227E-12 5.7845E-12 3.7662E-10 1.2177E-11 9.7355E-09 5.8431E-12 -8.7737E-10 1.8403E-09 2.8112E-07 1.1718E-14 5.8431E-12 1.3845E-13 -6.7156E-13 1.2420E-12 1.6957E-10 -1.2227E-12 -8.7737E-10 -6.7156E-13 7.9649E-11 -1.6943E-10 -2.5358E-08 5.7845E-12 1.8403E-09 1.2420E-12 -1.6943E-10 4.5768E-10 5.3807E-08 3.7662E-10 2.8112E-07 1.6957E-10 -2.5358E-08 5.3807E-08 8.1222E-06 # lat0 lon0 xBary yBary zBary JD0 -14.738894 27.486062 0.188560 -0.250316 -0.952185 2457306.007012 # Heliocentric elements and errors Epoch: 2457300.5000 = 2015/10/05 Mean Anomaly: 357.92877 +/- 17.008 Argument of Peri: 250.06061 +/- 27.782 Long of Asc Node: 141.26532 +/- 0.097 Inclination: 15.65391 +/- 0.011 Eccentricity: 0.22643812 +/- 0.0015 Semi-Major Axis: 47.57667962 +/- 0.2420 Time of Perihelion: 2457990.1287 +/- 5662.8 Perihelion: 36.80350549 +/- 0.2001 Aphelion: 58.34985374 +/- 0.3051 Period (y) 328.1704 +/- 2.50 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 31.72632712 +/- 0.0236 Ecliptic Y 16.29509309 +/- 0.0123 Ecliptic Z -9.12469325 +/- 0.0070 Ecliptic XDOT -0.00153086 +/- 0.0002 Ecliptic YDOT 0.00272136 +/- 0.0001 Ecliptic ZDOT -0.00032643 +/- 0.0001 # Distances at JD0 (AU) Heliocenter to KBO 36.81507732 +/- 0.0211 Geocenter to KBO 35.86510606 +/- 0.0275 # Hcoef: 8.39
The following table shows the complete astrometric record for 16SJ56. 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 (16SJ56) followed by the observatory code and reference code for the source of the astrometry.
2015 10 10.506223 02 03 03.535 -03 12 10.93 23.9r 16SJ56 568 C~2TuW 2015 10 10.518114 02 03 03.475 -03 12 11.42 23.9r 16SJ56 568 C~2TuW 2015 10 10.537679 02 03 03.383 -03 12 12.06 23.8r 16SJ56 568 C~2TuW 2015 10 10.539803 02 03 03.371 -03 12 12.13 23.7r 16SJ56 568 C~2TuW 2015 10 10.566184 02 03 03.244 -03 12 13.05 23.8r 16SJ56 568 C~2TuW 2015 10 10.577109 02 03 03.191 -03 12 13.44 23.5r 16SJ56 568 C~2TuW 2015 10 14.508049 02 02 43.985 -03 14 24.84 24.6g 16SJ56 568 C~2TuW 2015 10 14.519899 02 02 43.925 -03 14 25.22 24.6g 16SJ56 568 C~2TuW 2015 10 14.539481 02 02 43.824 -03 14 25.84 24.6g 16SJ56 568 C~2TuW 2015 10 14.568007 02 02 43.678 -03 14 26.75 24.4g 16SJ56 568 C~2TuW 2015 10 14.602694 02 02 43.503 -03 14 27.89 24.4g 16SJ56 568 C~2TuW 2016 09 27.44867 02 11 05.44 -02 37 25.5 24.5g 16SJ56 568 C~2eAH 2016 09 28.45775 02 11 01.15 -02 38 02.1 24.7g 16SJ56 568 C~2eAH 2016 09 28.57764 02 11 00.62 -02 38 06.5 24.6g 16SJ56 568 C~2eAH 2016 09 29.46952 02 10 56.78 -02 38 38.7 24.6g 16SJ56 568 C~2eAH 2016 09 29.52997 02 10 56.52 -02 38 40.9 24.6g 16SJ56 568 C~2eAH
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 0.06
2 0.0000 -1.01 -0.05 -0.14 -0.01
3 0.0001 -2.53 0.02 -0.25 -0.01
4 0.0001 -2.72 -0.00 -0.25 -0.00
5 0.0002 -4.83 0.02 -0.44 -0.04
6 0.0002 -5.71 0.03 -0.53 -0.06
7 0.0110 -321.22 0.03 -21.80 -0.03
8 0.0110 -322.19 0.03 -21.84 -0.02
9 0.0110 -323.83 0.00 -21.88 0.01
10 0.0111 -326.19 -0.03 -21.96 0.05
11 0.0112 -329.05 -0.05 -22.10 0.06
12 0.9663 7493.09 -0.02 -607.80 0.03
13 0.9691 7419.91 0.05 -619.19 0.01
14 0.9694 7410.91 -0.03 -620.49 -0.02
15 0.9718 7345.60 -0.05 -630.16 0.02
16 0.9720 7341.18 0.05 -630.83 -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.
16SJ56 quality flag:1 Type: 2:1E 5:2EEE SCATNEAR axisobj 48.221 56.024 47.531 ecceobj 0.237 0.403 0.235 incobj 15.629 15.668 15.619 qmin 35.825 33.031 35.495 qmax 60.475 79.135 59.234 amean 47.797 55.462 47.107 amin 47.281 54.747 46.677 amax 48.426 56.368 47.690 emean 0.207 0.362 0.227 emin 0.157 0.291 0.209 emax 0.251 0.405 0.244 imean 15.478 17.257 14.867 imin 14.039 14.326 14.219 imax 16.761 21.376 15.520 excite_mean 0.339 0.470 0.342 fracstop 1.000 1.000 1.000 cjmean 3.004 2.957 2.994 libcent 0 86.7 175.1 -180.0 libamp 0 44.0 99.4 -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 159.7 229.2 182.0 kozaiamp 180.0 18.9 180.0