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: 16SG58 # Created Wed Dec 25 02:10:48 2024 # Orbit generated by ELGB # -->Covariance matrix from a Bernstein fit # Fitting 62 observations of 62 # Arc: 8.15y # First observation: 2013/10/03 # Last observation: 2021/11/26 # Chi-squared of fit: 19.49 DOF: 118 RMS: 0.10 # Min/Max residuals: -0.40 0.26 # Exact a, adot, b, bdot, g, gdot: 2.273469E-05 3.840669E-02 8.744792E-08 8.761644E-05 2.785675E-02 -7.731306E-03 # Covariance matrix: 1.3579E-13 -4.9130E-14 -2.0734E-15 8.5326E-18 5.7360E-14 -1.3008E-13 -4.9130E-14 3.2434E-14 2.2246E-17 1.1776E-16 -2.2795E-15 9.7576E-14 -2.0734E-15 2.2246E-17 6.4167E-14 -1.4589E-14 -3.9748E-15 5.6121E-16 8.5326E-18 1.1776E-16 -1.4589E-14 5.1320E-15 2.9623E-16 3.8375E-16 5.7360E-14 -2.2795E-15 -3.9748E-15 2.9623E-16 1.0601E-13 -2.0976E-14 -1.3008E-13 9.7576E-14 5.6121E-16 3.8375E-16 -2.0976E-14 3.5027E-13 # lat0 lon0 xBary yBary zBary JD0 -13.564369 29.855473 0.341373 -0.220494 -0.914388 2456568.796258 # Heliocentric elements and errors Epoch: 2456568.5000 = 2013/10/03 Mean Anomaly: 358.90435 +/- 0.001 Argument of Peri: 296.29834 +/- 0.002 Long of Asc Node: 119.06286 +/- 0.000 Inclination: 13.22032 +/- 0.000 Eccentricity: 0.85459262 +/- 0.0001 Semi-Major Axis: 241.33257247 +/- 0.1042 Time of Perihelion: 2460736.1541 +/- 884.0 Perihelion: 35.09153689 +/- 0.0211 Aphelion: 447.57360805 +/- 0.1938 Period (y) 3749.1439 +/- 2.43 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 31.25015835 +/- 0.0004 Ecliptic Y 17.54735749 +/- 0.0002 Ecliptic Z -8.41944915 +/- 0.0001 Ecliptic XDOT -0.00252416 +/- 0.0000 Ecliptic YDOT 0.00290570 +/- 0.0000 Ecliptic ZDOT 0.00018673 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 36.81550554 +/- 0.0003 Geocenter to KBO 35.89813067 +/- 0.0004 # Hcoef: 7.28
The following table shows the complete astrometric record for 16SG58. 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 (16SG58) followed by the observatory code and reference code for the source of the astrometry.
2013 10 03.29548 02 10 02.088 -01 18 00.22 23.6g 16SG58 W84 C~4ybt 2013 10 29.15490 02 08 00.176 -01 30 17.95 23.8g 16SG58 W84 C~4ybt 2013 11 04.08027 02 07 31.28 -01 32 32.5 23.2r 16SG58 W84 C~352t 2013 11 04.14330 02 07 30.97 -01 32 33.8 16SG58 W84 C~352t 2013 11 04.22553 02 07 30.56 -01 32 35.4 16SG58 W84 C~352t 2013 11 08.249745 02 07 11.22 -01 33 56.0 23.7g 16SG58 W84 C~352t 2013 11 08.25027 02 07 11.222 -01 33 56.16 23.8g 16SG58 W84 C~4ybt 2013 11 08.25167 02 07 11.206 -01 33 56.38 22.3r 16SG58 W84 C~4ybt 2013 11 13.17529 02 06 48.092 -01 35 22.88 23.1z 16SG58 W84 C~4ybt 2013 12 28.11269 02 04 19.834 -01 36 23.85 23.3r 16SG58 W84 C~4ybt 2013 12 28.11407 02 04 19.831 -01 36 23.85 22.9i 16SG58 W84 C~4ybt 2014 08 19.38618 02 20 20.927 -00 09 06.81 22.9i 16SG58 W84 C~4ybt 2014 10 01.35954 02 18 30.491 -00 30 39.69 22.6i 16SG58 W84 C~4ybt 2014 10 01.361771 02 18 30.49 -00 30 39.8 22.7r 16SG58 W84 C~352t 2014 10 21.25060 02 16 59.608 -00 40 36.71 22.6r 16SG58 W84 C~4ybt 2014 10 23.296991 02 16 49.58 -00 41 32.0 23.8g 16SG58 W84 C~352t 2014 10 23.29752 02 16 49.586 -00 41 32.24 23.8g 16SG58 W84 C~4ybt 2014 12 16.13208 02 12 57.736 -00 52 51.29 23.3g 16SG58 W84 C~4ybt 2014 12 16.13481 02 12 57.723 -00 52 51.19 23.1i 16SG58 W84 C~4ybt 2015 01 16.06633 02 12 16.072 -00 44 55.68 22.9r 16SG58 W84 C~4ybt 2015 01 20.04740 02 12 17.859 -00 43 09.35 23.2i 16SG58 W84 C~4ybt 2015 01 21.041215 02 12 18.57 -00 42 41.5 22.3z 16SG58 W84 C~352t 2015 01 21.04174 02 12 18.582 -00 42 41.54 22.4z 16SG58 W84 C~4ybt 2016 09 09.40569 02 36 37.171 +01 14 31.07 22.7i 16SG58 W84 C~4ybt 2016 09 10.36303 02 36 34.899 +01 14 02.85 22.8r 16SG58 W84 C~4ybt 2016 09 10.36441 02 36 34.899 +01 14 02.95 23.5g 16SG58 W84 C~4ybt 2016 09 27.52694 02 35 41.45 +01 05 18.7 23.5g 16SG58 568 C~2eAJ 2016 09 28.47556 02 35 37.86 +01 04 49.3 23.7g 16SG58 568 C~2eAJ 2016 09 28.53606 02 35 37.62 +01 04 47.4 23.8g 16SG58 568 C~2eAJ 2016 09 28.59578 02 35 37.39 +01 04 45.6 23.7g 16SG58 568 C~2eAJ 2016 09 29.60796 02 35 33.47 +01 04 14.2 23.5g 16SG58 568 C~2eAJ 2016 10 27.21819 02 33 27.387 +00 50 55.89 22.7r 16SG58 W84 C~4ybt 2016 10 27.21957 02 33 27.364 +00 50 55.75 23.9g 16SG58 W84 C~4ybt 2016 11 04.167847 02 32 47.33 +00 47 46.8 22.7i 16SG58 W84 C~352t 2016 11 04.16838 02 32 47.333 +00 47 46.74 22.7i 16SG58 W84 C~4ybt 2016 11 04.18210 02 32 47.260 +00 47 46.50 23.2g 16SG58 W84 C~4ybt 2016 11 04.18347 02 32 47.255 +00 47 46.39 22.7r 16SG58 W84 C~4ybt 2016 11 04.18483 02 32 47.248 +00 47 46.36 22.3i 16SG58 W84 C~4ybt 2016 11 04.19864 02 32 47.183 +00 47 46.02 24.0g 16SG58 W84 C~4ybt 2016 11 04.20001 02 32 47.168 +00 47 46.02 22.7r 16SG58 W84 C~4ybt 2016 11 04.20137 02 32 47.160 +00 47 46.03 22.7i 16SG58 W84 C~4ybt 2016 11 10.15486 02 32 17.266 +00 45 42.49 21.4z 16SG58 W84 C~4ybt 2016 11 10.16381 02 32 17.216 +00 45 42.55 22.0z 16SG58 W84 C~4ybt 2016 11 10.16606 02 32 17.209 +00 45 42.60 22.5z 16SG58 W84 C~4ybt 2016 11 10.17275 02 32 17.180 +00 45 42.63 21.6z 16SG58 W84 C~4ybt 2016 11 25.11978 02 31 05.481 +00 41 55.71 22.3z 16SG58 W84 C~4ybt 2017 10 30.227824 02 41 52.96 +01 37 47.4 21.1z 16SG58 W84 C~352t 2017 11 01.177755 02 41 43.12 +01 37 00.7 22.6z 16SG58 W84 C~352t 2017 11 01.17828 02 41 43.116 +01 37 00.67 22.5z 16SG58 W84 C~4ybt 2017 11 23.149664 02 39 53.25 +01 30 13.9 22.9r 16SG58 W84 C~352t 2017 11 23.15019 02 39 53.249 +01 30 13.88 22.9r 16SG58 W84 C~4ybt 2017 11 29.15057 02 39 25.467 +01 29 08.37 22.4z 16SG58 W84 C~4ybt 2017 12 07.040347 02 38 51.76 +01 28 16.4 22.7i 16SG58 W84 C~352t 2017 12 07.04087 02 38 51.754 +01 28 16.30 22.7i 16SG58 W84 C~4ybt 2017 12 10.10460 02 38 39.660 +01 28 06.84 23.6g 16SG58 W84 C~4ybt 2018 09 11.34547 02 53 50.303 +02 49 19.36 22.7i 16SG58 W84 C~4ybt 2018 12 01.08037 02 48 01.100 +02 17 09.14 22.8r 16SG58 W84 C~4ybt 2018 12 01.08175 02 48 01.098 +02 17 09.16 23.4g 16SG58 W84 C~4ybt 2021 11 26.298201 03 15 08.969 +04 44 07.04 22.4w 16SG58 F52 C~5HJi 2021 11 26.310387 03 15 08.913 +04 44 06.78 22.4w 16SG58 F52 C~5HJi 2021 11 26.322647 03 15 08.846 +04 44 06.76 22.6w 16SG58 F52 C~5HJi 2021 11 26.334866 03 15 08.777 +04 44 06.66 22.5w 16SG58 F52 C~5HJi
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 -0.18 0.00 -0.07
2 0.0708 0.00 0.03 0.00 0.26
3 0.0870 0.00 0.03 0.00 -0.14
4 0.0872 0.00 0.04 0.00 -0.10
5 0.0874 0.00 -0.03 0.00 0.04
6 0.0984 0.00 0.03 0.00 0.18
7 0.0984 0.00 0.10 0.00 0.03
8 0.0984 0.00 -0.04 0.00 -0.16
9 0.1119 0.00 0.05 0.00 0.04
10 0.2350 0.00 -0.01 0.00 -0.02
11 0.2350 0.00 -0.03 0.00 -0.04
12 0.8764 0.00 0.07 0.00 -0.03
13 0.9940 0.00 0.03 0.00 -0.05
14 0.9940 0.00 0.16 0.00 -0.09
15 1.0485 0.00 0.06 0.00 0.03
16 1.0541 0.00 -0.19 0.00 0.24
17 1.0541 0.00 -0.06 0.00 0.02
18 1.2015 0.00 0.01 0.00 -0.05
19 1.2015 0.00 -0.07 0.00 0.03
20 1.2862 0.00 0.04 0.00 -0.07
21 1.2971 0.00 -0.05 0.00 0.01
22 1.2998 0.00 -0.11 0.00 -0.11
23 1.2998 0.00 0.07 0.00 -0.17
24 2.9353 0.00 0.15 0.00 0.06
25 2.9379 0.00 0.02 0.00 -0.02
26 2.9379 0.00 0.07 0.00 0.12
27 2.9849 0.00 -0.16 0.00 0.03
28 2.9875 0.00 -0.11 0.00 0.06
29 2.9877 0.00 -0.15 0.00 0.04
30 2.9878 0.00 -0.08 0.00 0.09
31 2.9906 0.00 -0.16 0.00 0.06
32 3.0662 0.00 0.19 0.00 -0.03
33 3.0662 0.00 -0.05 0.00 -0.13
34 3.0879 0.00 -0.04 0.00 0.06
35 3.0879 0.00 0.05 0.00 0.01
36 3.0880 0.00 0.01 0.00 0.07
37 3.0880 0.00 0.04 0.00 -0.01
38 3.0880 0.00 0.04 0.00 -0.01
39 3.0880 0.00 0.13 0.00 -0.04
40 3.0880 0.00 0.01 0.00 -0.01
41 3.0880 0.00 -0.01 0.00 0.03
42 3.1043 0.00 0.14 0.00 -0.28
43 3.1044 0.00 0.07 0.00 -0.04
44 3.1044 0.00 0.14 0.00 0.05
45 3.1044 0.00 0.22 0.00 0.21
46 3.1453 0.00 -0.00 0.00 0.00
47 4.0737 0.00 -0.40 0.00 -0.02
48 4.0791 0.00 0.14 0.00 0.00
49 4.0791 0.00 0.12 0.00 -0.02
50 4.1392 0.00 0.00 0.00 0.01
51 4.1392 0.00 0.03 0.00 0.00
52 4.1557 0.00 -0.19 0.00 0.02
53 4.1773 0.00 0.06 0.00 0.10
54 4.1773 0.00 0.00 0.00 0.00
55 4.1857 0.00 -0.05 0.00 -0.08
56 4.9392 0.00 -0.02 0.00 0.03
57 5.1603 0.00 -0.03 0.00 0.05
58 5.1603 0.00 0.03 0.00 0.08
59 8.1479 0.00 -0.02 0.00 -0.03
60 8.1479 0.00 0.09 0.00 -0.14
61 8.1479 0.00 0.04 0.00 -0.01
62 8.1480 0.00 -0.05 0.00 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.
16SG58 quality flag:3 Type: SCATNEAR SCATNEAR SCATNEAR axisobj 249.587 249.576 249.599 ecceobj 0.859 0.859 0.859 incobj 13.220 13.220 13.220 qmin 33.160 33.015 33.094 qmax 493.433 489.011 529.886 amean 233.921 237.405 244.036 amin 210.973 222.711 216.861 amax 264.577 262.173 282.698 emean 0.848 0.852 0.855 emin 0.829 0.839 0.835 emax 0.865 0.866 0.875 imean 12.718 12.040 12.346 imin 11.531 11.531 11.516 imax 13.758 13.125 13.216 excite_mean 0.876 0.877 0.881 fracstop 1.000 1.000 1.000 cjmean 3.007 3.006 3.007 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 329.9 312.0 321.1 kozaiamp 32.1 20.4 23.9