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 Sun Dec 22 02:10:52 2024 # Orbit generated from Bernstein formalism # Fitting 19 observations of 19 # Arc: 0.97y # First observation: 2015/10/10 # Last observation: 2016/09/29 Preliminary a, adot, b, bdot, g, gdot: -0.000001 0.031807 0.000000 -0.003468 0.027850 0.000000 # Chi-squared of fit: 6.23 DOF: 32 RMS: 0.10 # Min/Max residuals: -0.18 0.31 # Exact a, adot, b, bdot, g, gdot: 1.801465E-05 3.174386E-02 -2.052980E-06 -3.460575E-03 2.786722E-02 -2.673042E-03 # Covariance matrix: 1.8487E-13 1.4942E-11 2.2726E-14 -1.3957E-12 3.6327E-12 4.4042E-10 1.4942E-11 6.9580E-09 1.0633E-11 -6.3900E-10 1.5253E-09 2.0218E-07 2.2726E-14 1.0633E-11 1.2603E-13 -1.0962E-12 2.3288E-12 3.0896E-10 -1.3957E-12 -6.3900E-10 -1.0962E-12 5.9131E-11 -1.4019E-10 -1.8569E-08 3.6327E-12 1.5253E-09 2.3288E-12 -1.4019E-10 3.3698E-10 4.4346E-08 4.4042E-10 2.0218E-07 3.0896E-10 -1.8569E-08 4.4346E-08 5.8754E-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: 344.06182 +/- 11.083 Argument of Peri: 273.58684 +/- 19.840 Long of Asc Node: 141.18024 +/- 0.084 Inclination: 15.64425 +/- 0.009 Eccentricity: 0.24649151 +/- 0.0372 Semi-Major Axis: 47.84646748 +/- 0.7651 Time of Perihelion: 2462652.4168 +/- 3719.5 Perihelion: 36.05271928 +/- 1.8712 Aphelion: 59.64021568 +/- 2.0195 Period (y) 330.9657 +/- 7.94 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 31.74292871 +/- 0.0203 Ecliptic Y 16.30372875 +/- 0.0105 Ecliptic Z -9.12960906 +/- 0.0060 Ecliptic XDOT -0.00174307 +/- 0.0002 Ecliptic YDOT 0.00260300 +/- 0.0001 Ecliptic ZDOT -0.00026194 +/- 0.0001 # Distances at JD0 (AU) Heliocenter to KBO 36.83442487 +/- 0.0182 Geocenter to KBO 35.88445426 +/- 0.0236 # Hcoef: 8.35
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 2015 11 10.39281 02 00 29.18 -03 26 29.9 23.6i 16SJ56 T09 C~8HHZ 2015 11 10.40586 02 00 29.11 -03 26 30.0 23.5i 16SJ56 T09 C~8HHZ 2015 11 10.41689 02 00 29.08 -03 26 30.0 23.6i 16SJ56 T09 C~8HHZ 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 0.02
2 0.0000 -1.01 -0.05 -0.14 -0.05
3 0.0001 -2.53 0.02 -0.25 -0.05
4 0.0001 -2.72 -0.00 -0.25 -0.04
5 0.0002 -4.83 0.02 -0.44 -0.08
6 0.0002 -5.71 0.03 -0.53 -0.10
7 0.0110 -321.22 0.03 -21.80 -0.09
8 0.0110 -322.19 0.03 -21.84 -0.08
9 0.0110 -323.83 0.00 -21.88 -0.05
10 0.0111 -326.19 -0.03 -21.96 -0.01
11 0.0112 -329.05 -0.05 -22.10 -0.01
12 0.0846 -2465.96 -0.13 12.60 0.06
13 0.0846 -2466.98 -0.15 12.88 0.24
14 0.0846 -2467.40 0.28 13.04 0.31
15 0.9663 7493.09 -0.18 -607.80 -0.01
16 0.9691 7419.91 0.02 -619.19 -0.01
17 0.9694 7410.91 -0.05 -620.49 -0.04
18 0.9718 7345.60 0.05 -630.16 0.03
19 0.9720 7341.18 0.16 -630.83 -0.03
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:2 Type: 2:1E CENTAURR 2:1E axisobj 48.481 52.419 48.415 ecceobj 0.255 0.395 0.251 incobj 15.619 15.586 15.622 qmin 34.880 29.242 35.341 qmax 61.827 91.513 61.147 amean 47.796 53.010 47.795 amin 47.131 48.429 47.179 amax 48.603 61.034 48.518 emean 0.250 0.417 0.239 emin 0.225 0.361 0.214 emax 0.273 0.499 0.262 imean 13.876 13.236 14.033 imin 13.215 10.078 13.603 imax 14.685 15.423 14.415 excite_mean 0.347 0.477 0.341 fracstop 1.000 0.463 1.000 cjmean 2.999 2.913 3.003 libcent 0 179.9 -180.0 179.4 libamp 0 158.3 -180.0 152.1 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 206.9 199.5 173.6 kozaiamp 180.0 179.9 179.9