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: 16SS46 # Created Tue Jan 21 02:10:59 2025 # Orbit generated by ELGB # -->Covariance matrix from a Bernstein fit # Fitting 30 observations of 33 # Arc: 3.34y # First observation: 2014/08/19 # Last observation: 2017/12/20 # Chi-squared of fit: 52.20 DOF: 54 RMS: 0.23 # Min/Max residuals: -0.45 0.59 # Exact a, adot, b, bdot, g, gdot: 1.882766E-05 3.987426E-02 -1.009670E-06 -2.896056E-03 3.223016E-02 -2.859329E-03 # Covariance matrix: 3.1275E-13 -1.1081E-13 1.6485E-15 8.0233E-15 9.4996E-14 -2.5187E-13 -1.1081E-13 8.5818E-14 1.2093E-14 -6.9074E-15 2.9864E-14 1.8430E-13 1.6485E-15 1.2093E-14 1.0536E-13 -1.7817E-14 2.4790E-14 2.2202E-14 8.0233E-15 -6.9074E-15 -1.7817E-14 6.2036E-15 -2.6682E-15 -1.5845E-14 9.4996E-14 2.9864E-14 2.4790E-14 -2.6682E-15 1.7777E-13 2.2747E-14 -2.5187E-13 1.8430E-13 2.2202E-14 -1.5845E-14 2.2747E-14 4.3610E-13 # lat0 lon0 xBary yBary zBary JD0 -14.501027 36.014946 0.952874 -0.087258 -0.337905 2456888.888358 # Heliocentric elements and errors Epoch: 2456888.5000 = 2014/08/19 Mean Anomaly: 342.05293 +/- 0.004 Argument of Peri: 282.83962 +/- 0.007 Long of Asc Node: 142.31163 +/- 0.000 Inclination: 15.04733 +/- 0.000 Eccentricity: 0.25039301 +/- 0.0000 Semi-Major Axis: 40.71128302 +/- 0.0030 Time of Perihelion: 2461618.5046 +/- 9.9 Perihelion: 30.51746216 +/- 0.0028 Aphelion: 50.90510389 +/- 0.0040 Period (y) 259.7649 +/- 0.03 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 25.13696421 +/- 0.0003 Ecliptic Y 17.09890771 +/- 0.0002 Ecliptic Z -7.76907792 +/- 0.0001 Ecliptic XDOT -0.00223658 +/- 0.0000 Ecliptic YDOT 0.00256100 +/- 0.0000 Ecliptic ZDOT -0.00017723 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 31.37837043 +/- 0.0003 Geocenter to KBO 31.02690679 +/- 0.0004 # Hcoef: 8.65
The following table shows the complete astrometric record for 16SS46. 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 (16SS46) followed by the observatory code and reference code for the source of the astrometry.
2014 08 19.38758 02 33 49.129 -00 11 19.57 24.1r 16SS46 W84 C~55Zv 2014 09 24.29476 02 32 19.968 -00 34 02.10 24.1i 16SS46 W84 C~55Zv 2014 10 21.31713 02 30 01.004 -00 51 36.29 23.4r 16SS46 W84 C~55Zv 2014 10 23.30858 02 29 49.420 -00 52 46.05 24.0g 16SS46 W84 C~55Zv 2014 10 29.29309 02 29 14.128 -00 56 04.72 23.2i 16SS46 W84 C~55Zv 2015 12 14.16575 02 34 09.104 -00 33 56.75 24.0i 16SS46 W84 C~55Zv 2015 12 14.16712 02 34 09.085 -00 33 56.55 23.8r 16SS46 W84 C~55Zv 2015 12 14.16849 02 34 09.088 -00 33 56.57 24.2g 16SS46 W84 C~55Zv 2016 09 22.283796 02 50 32.02 +00 37 31.2 23.5i 16SS46 W84 C~2B0K 2016 09 22.289097 02 50 32.01 +00 37 30.9 23.2z 16SS46 W84 C~2B0K 2016 09 24.27777 02 50 24.332 +00 36 11.83 23.4r 16SS46 W84 C~55Zv 2016 09 27.44396 02 50 11.35 +00 34 05.7 24.1g 16SS46 568 C~2NQ0 2016 09 27.51628 02 50 11.04 +00 34 02.8 24.0g 16SS46 568 C~2NQ0 2016 09 28.45298 02 50 07.03 +00 33 25.6 24.3g 16SS46 568 C~2NQ0 2016 09 28.57265 02 50 06.50 +00 33 20.9 24.5g 16SS46 568 C~2NQ0 2016 09 29.206921 02 50 03.73 +00 32 56.2 23.4r 16SS46 W84 C~2B0K 2016 10 05.178484 02 49 36.07 +00 29 00.9 23.3r 16SS46 W84 C~2B0K 2016 10 05.180845 02 49 36.06 +00 29 00.6 23.5i 16SS46 W84 C~2B0K 2016 10 10.173299 02 49 10.97 +00 25 47.1 23.4r 16SS46 W84 C~2B0K 2016 10 10.175648 02 49 10.96 +00 25 47.2 23.6i 16SS46 W84 C~2B0K 2016 10 10.179618 02 49 10.94 +00 25 46.9 23.4z 16SS46 W84 C~2B0K 2016 10 27.115301 02 47 35.94 +00 15 39.1 23.6r 16SS46 W84 C~2B0K 2016 10 29.22268 02 47 23.411 +00 14 31.34 22.7i 16SS46 W84 C~55Zv 2016 11 10.26627 02 46 10.768 +00 08 45.13 22.0z 16SS46 W84 C~55Zv 2017 08 27.40776 03 00 36.703 +01 28 55.71 23.8r 16SS46 W84 C~55Zv 2017 09 18.33217 02 59 53.831 +01 15 43.14 24.1g 16SS46 W84 C~55Zv 2017 12 09.12014 02 52 39.097 +00 36 54.01 23.0r 16SS46 W84 C~55Zv 2017 12 09.12152 02 52 39.112 +00 36 54.09 23.9g 16SS46 W84 C~55Zv 2017 12 20.27929 02 51 48.673 +00 36 44.96 23.3R 16SS46 G37 C~4UMZ 2017 12 20.35598 02 51 48.359 +00 36 45.44 16SS46 G37 C~4UMZ 2024 12 31.11382 03 56 18.829 +04 46 01.87 23.3G 16SS46 G37 2024 12 31.16499 03 56 18.586 +04 46 02.37 16SS46 G37 2024 12 31.21568 03 56 18.336 +04 46 02.82 16SS46 G37
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 -0.03
2 0.0983 0.00 0.19 0.00 -0.11
3 0.1723 0.00 -0.09 0.00 -0.10
4 0.1777 0.00 -0.10 0.00 -0.18
5 0.1941 0.00 -0.04 0.00 -0.12
6 1.3190 0.00 0.17 0.00 -0.18
7 1.3190 0.00 -0.03 0.00 0.02
8 1.3190 0.00 0.10 0.00 0.00
9 2.0942 0.00 -0.08 0.00 0.08
10 2.0942 0.00 0.08 0.00 -0.01
11 2.0996 0.00 0.27 0.00 -0.12
12 2.1083 0.00 0.21 0.00 -0.12
13 2.1085 0.00 0.28 0.00 -0.14
14 2.1111 0.00 0.27 0.00 -0.12
15 2.1114 0.00 0.29 0.00 -0.06
16 2.1131 0.00 0.05 0.00 0.18
17 2.1295 0.00 -0.36 0.00 0.59
18 2.1295 0.00 -0.34 0.00 0.38
19 2.1432 0.00 -0.41 0.00 0.34
20 2.1432 0.00 -0.37 0.00 0.53
21 2.1432 0.00 -0.36 0.00 0.39
22 2.1895 0.00 -0.45 0.00 -0.04
23 2.1953 0.00 -0.00 0.00 0.30
24 2.2283 0.00 0.26 0.00 -0.30
25 3.0226 0.00 0.04 0.00 -0.27
26 3.0827 0.00 0.06 0.00 -0.13
27 3.3066 0.00 -0.03 0.00 -0.24
28 3.3066 0.00 0.30 0.00 -0.15
29 3.3371 0.00 0.06 0.00 -0.25
30 3.3374 0.00 0.06 0.00 -0.06
31 10.3675 0.00 ( -4.92) 0.00 ( -1.67)
32 10.3676 0.00 ( -4.93) 0.00 ( -1.55)
33 10.3678 0.00 ( -5.08) 0.00 ( -1.47)
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.
16SS46 quality flag:2 Type: CENTAURR CENTAURS CENTAURR axisobj 41.034 41.034 41.035 ecceobj 0.254 0.254 0.254 incobj 15.028 15.028 15.028 qmin 28.777 29.947 29.367 qmax 62.617 79.161 62.163 amean 42.902 45.471 42.543 amin 39.743 39.470 38.651 amax 46.555 55.484 46.794 emean 0.287 0.301 0.278 emin 0.205 0.185 0.198 emax 0.345 0.431 0.334 imean 11.543 11.443 11.850 imin 6.872 6.101 8.090 imax 14.993 14.914 14.745 excite_mean 0.352 0.366 0.347 fracstop 0.195 1.000 0.256 cjmean 2.940 2.952 2.940 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 180.0 183.1 169.3 kozaiamp 180.0 180.0 179.7