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: 16SY56 # Created Mon Apr 28 01:11:00 2025 # Orbit generated by ELGB # -->Covariance matrix from a Bernstein fit # Fitting 48 observations of 48 # Arc: 5.16y # First observation: 2013/10/03 # Last observation: 2018/12/01 # Chi-squared of fit: 22.03 DOF: 90 RMS: 0.12 # Min/Max residuals: -0.28 0.37 # Exact a, adot, b, bdot, g, gdot: 1.751768E-05 2.687196E-02 1.830993E-06 1.801172E-03 2.596550E-02 -2.009672E-03 # Covariance matrix: 2.5678E-13 -1.7102E-13 7.0459E-15 -9.2768E-15 -5.9028E-15 -1.0449E-12 -1.7102E-13 1.8378E-13 -1.1053E-14 1.2719E-14 5.4584E-14 1.4127E-12 7.0459E-15 -1.1053E-14 1.5777E-13 -5.0336E-14 -7.5274E-15 -9.4869E-14 -9.2768E-15 1.2719E-14 -5.0336E-14 2.0310E-14 4.6482E-15 1.0925E-13 -5.9028E-15 5.4584E-14 -7.5274E-15 4.6482E-15 1.3637E-13 4.6652E-13 -1.0449E-12 1.4127E-12 -9.4869E-14 1.0925E-13 4.6652E-13 1.2135E-11 # lat0 lon0 xBary yBary zBary JD0 -13.842944 30.492522 0.351809 -0.224015 -0.909563 2456568.796258 # Heliocentric elements and errors Epoch: 2456568.5000 = 2013/10/03 Mean Anomaly: 319.02884 +/- 0.037 Argument of Peri: 335.95304 +/- 0.052 Long of Asc Node: 104.45895 +/- 0.001 Inclination: 14.00751 +/- 0.000 Eccentricity: 0.11789973 +/- 0.0001 Semi-Major Axis: 42.95502395 +/- 0.0026 Time of Perihelion: 2468271.4429 +/- 13.5 Perihelion: 37.89063822 +/- 0.0049 Aphelion: 48.01940968 +/- 0.0052 Period (y) 281.5329 +/- 0.03 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 33.20722297 +/- 0.0005 Ecliptic Y 19.14991612 +/- 0.0003 Ecliptic Z -9.21454938 +/- 0.0001 Ecliptic XDOT -0.00158206 +/- 0.0000 Ecliptic YDOT 0.00235885 +/- 0.0000 Ecliptic ZDOT 0.00023524 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 39.42525956 +/- 0.0004 Geocenter to KBO 38.51272139 +/- 0.0005 # Hcoef: 7.37
The following table shows the complete astrometric record for 16SY56. 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 (16SY56) followed by the observatory code and reference code for the source of the astrometry.
2013 10 03.29548 02 12 44.604 -01 20 55.50 22.7g 16SY56 W84 C~4ybt 2013 10 04.20610 02 12 40.648 -01 21 23.03 23.7g 16SY56 W84 C~4ybt 2013 11 08.25167 02 09 53.343 -01 36 18.00 23.4r 16SY56 W84 C~4ybt 2013 11 13.17529 02 09 30.048 -01 37 42.89 22.7z 16SY56 W84 C~4ybt 2014 08 19.38618 02 20 30.520 -00 21 28.26 23.0i 16SY56 W84 C~4ybt 2014 10 01.35954 02 18 33.375 -00 42 16.22 23.0i 16SY56 W84 C~4ybt 2014 10 01.36230 02 18 33.348 -00 42 16.35 23.3r 16SY56 W84 C~4ybt 2014 10 23.29752 02 16 52.284 -00 52 42.28 24.0g 16SY56 W84 C~4ybt 2014 10 23.29889 02 16 52.272 -00 52 42.35 23.3r 16SY56 W84 C~4ybt 2014 10 23.30162 02 16 52.266 -00 52 42.30 23.3i 16SY56 W84 C~4ybt 2014 12 16.13208 02 12 59.016 -01 03 52.78 24.1g 16SY56 W84 C~4ybt 2014 12 16.13481 02 12 59.018 -01 03 52.95 23.2i 16SY56 W84 C~4ybt 2015 01 20.04740 02 12 10.384 -00 55 14.74 23.4i 16SY56 W84 C~4ybt 2015 12 15.15812 02 18 39.900 -00 26 36.74 23.4i 16SY56 W84 C~4ybt 2016 01 03.10590 02 17 54.777 -00 23 59.93 24.3g 16SY56 W84 C~4ybt 2016 09 07.53553 02 31 12.42 +00 44 39.4 23.4r 16SY56 T09 C~8HHZ 2016 09 07.61827 02 31 12.21 +00 44 37.1 23.7r 16SY56 T09 C~8HHZ 2016 09 07.62038 02 31 12.20 +00 44 37.1 23.5r 16SY56 T09 C~8HHZ 2016 09 07.62463 02 31 12.20 +00 44 36.9 23.5r 16SY56 T09 C~8HHZ 2016 09 07.63173 02 31 12.18 +00 44 36.8 23.5r 16SY56 T09 C~8HHZ 2016 09 10.30904 02 31 05.321 +00 43 20.61 22.9r 16SY56 W84 C~4ybt 2016 09 10.31040 02 31 05.314 +00 43 20.53 23.0i 16SY56 W84 C~4ybt 2016 09 10.31179 02 31 05.314 +00 43 20.54 23.7g 16SY56 W84 C~4ybt 2016 09 27.46491 02 30 08.60 +00 34 53.6 23.8g 16SY56 568 C~2eAI 2016 09 27.52550 02 30 08.36 +00 34 51.8 23.9g 16SY56 568 C~2eAI 2016 09 27.58468 02 30 08.12 +00 34 50.0 23.8g 16SY56 568 C~2eAI 2016 09 28.47413 02 30 04.65 +00 34 23.4 23.9g 16SY56 568 C~2eAI 2016 09 28.53463 02 30 04.41 +00 34 21.6 23.9g 16SY56 568 C~2eAI 2016 09 28.59436 02 30 04.16 +00 34 19.8 23.9g 16SY56 568 C~2eAI 2016 09 29.48603 02 30 00.63 +00 33 53.2 23.9g 16SY56 568 C~2eAI 2016 11 04.16975 02 27 13.866 +00 18 02.15 23.6g 16SY56 W84 C~4ybt 2016 11 04.17111 02 27 13.870 +00 18 02.22 22.8r 16SY56 W84 C~4ybt 2016 11 04.17248 02 27 13.872 +00 18 02.28 22.8i 16SY56 W84 C~4ybt 2016 11 04.19034 02 27 13.782 +00 18 01.74 23.7g 16SY56 W84 C~4ybt 2016 11 04.19173 02 27 13.776 +00 18 01.70 23.2r 16SY56 W84 C~4ybt 2016 11 04.19312 02 27 13.768 +00 18 01.64 22.9i 16SY56 W84 C~4ybt 2016 11 04.19451 02 27 13.759 +00 18 01.87 23.5g 16SY56 W84 C~4ybt 2016 11 04.19588 02 27 13.742 +00 18 01.74 22.7r 16SY56 W84 C~4ybt 2016 11 04.19726 02 27 13.754 +00 18 01.62 22.8i 16SY56 W84 C~4ybt 2016 11 04.20274 02 27 13.699 +00 18 01.47 24.5g 16SY56 W84 C~4ybt 2016 11 04.20412 02 27 13.708 +00 18 01.52 23.3r 16SY56 W84 C~4ybt 2016 11 10.15935 02 26 44.290 +00 16 03.42 22.4z 16SY56 W84 C~4ybt 2016 11 10.17497 02 26 44.206 +00 16 03.05 23.0z 16SY56 W84 C~4ybt 2017 09 18.32393 02 36 23.819 +01 17 22.09 23.1i 16SY56 W84 C~4ybt 2017 09 18.32531 02 36 23.830 +01 17 22.15 23.9g 16SY56 W84 C~4ybt 2018 11 16.12781 02 37 44.681 +01 30 33.15 22.2i 16SY56 W84 C~4ybt 2018 12 01.16973 02 36 34.543 +01 27 26.01 23.1r 16SY56 W84 C~4ybt 2018 12 01.17110 02 36 34.547 +01 27 25.77 23.8g 16SY56 W84 C~4ybt
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 -0.17 0.00 -0.22
2 0.0025 0.00 -0.02 0.00 -0.02
3 0.0984 0.00 -0.07 0.00 -0.08
4 0.1119 0.00 0.06 0.00 0.00
5 0.8764 0.00 0.11 0.00 0.11
6 0.9940 0.00 0.23 0.00 -0.01
7 0.9940 0.00 -0.00 0.00 -0.06
8 1.0541 0.00 0.11 0.00 0.06
9 1.0541 0.00 0.03 0.00 0.02
10 1.0541 0.00 0.15 0.00 0.14
11 1.2015 0.00 -0.07 0.00 0.12
12 1.2015 0.00 0.09 0.00 -0.06
13 1.2971 0.00 -0.03 0.00 -0.26
14 2.1981 0.00 0.09 0.00 -0.09
15 2.2500 0.00 -0.02 0.00 0.03
16 2.9302 0.00 -0.10 0.00 0.03
17 2.9304 0.00 -0.10 0.00 0.06
18 2.9304 0.00 -0.17 0.00 0.12
19 2.9304 0.00 -0.00 0.00 0.04
20 2.9304 0.00 -0.03 0.00 0.14
21 2.9378 0.00 0.02 0.00 -0.06
22 2.9378 0.00 -0.03 0.00 -0.10
23 2.9378 0.00 0.03 0.00 -0.05
24 2.9847 0.00 -0.11 0.00 0.14
25 2.9849 0.00 -0.10 0.00 0.16
26 2.9850 0.00 -0.17 0.00 0.13
27 2.9875 0.00 -0.09 0.00 0.12
28 2.9876 0.00 -0.02 0.00 0.13
29 2.9878 0.00 -0.16 0.00 0.11
30 2.9903 0.00 -0.05 0.00 0.14
31 3.0880 0.00 -0.20 0.00 -0.12
32 3.0880 0.00 -0.04 0.00 -0.03
33 3.0880 0.00 0.10 0.00 0.06
34 3.0880 0.00 0.10 0.00 -0.10
35 3.0880 0.00 0.12 0.00 -0.11
36 3.0880 0.00 0.10 0.00 -0.14
37 3.0880 0.00 0.07 0.00 0.12
38 3.0880 0.00 -0.08 0.00 0.02
39 3.0880 0.00 0.21 0.00 -0.07
40 3.0880 0.00 -0.20 0.00 -0.11
41 3.0880 0.00 0.04 0.00 -0.03
42 3.1044 0.00 0.12 0.00 0.02
43 3.1044 0.00 0.03 0.00 -0.06
44 3.9590 0.00 0.01 0.00 0.14
45 3.9590 0.00 0.24 0.00 0.24
46 5.1193 0.00 0.37 0.00 -0.17
47 5.1605 0.00 -0.15 0.00 -0.05
48 5.1605 0.00 -0.00 0.00 -0.28
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.
16SY56 quality flag:3 Type: CLASSICAL CLASSICAL CLASSICAL axisobj 43.181 43.181 43.181 ecceobj 0.119 0.119 0.119 incobj 14.014 14.014 14.014 qmin 36.628 36.595 36.630 qmax 49.327 49.398 49.329 amean 42.849 42.849 42.849 amin 42.475 42.494 42.480 amax 43.234 43.241 43.235 emean 0.125 0.124 0.125 emin 0.107 0.107 0.107 emax 0.142 0.143 0.142 imean 12.333 12.333 12.333 imin 11.363 11.361 11.364 imax 13.205 13.209 13.203 excite_mean 0.247 0.247 0.247 fracstop 1.000 1.000 1.000 cjmean 3.015 3.015 3.015 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 177.0 177.2 177.0 kozaiamp 179.9 180.0 179.9