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: 16SK56 # Created Sat Apr 27 01:18:08 2024 # Orbit generated by ELGB # -->Covariance matrix from a Bernstein fit # Fitting 42 observations of 42 # Arc: 8.15y # First observation: 2013/10/04 # Last observation: 2021/11/26 # Chi-squared of fit: 13.03 DOF: 78 RMS: 0.10 # Min/Max residuals: -0.31 0.22 # Exact a, adot, b, bdot, g, gdot: 1.785499E-05 2.716940E-02 -1.746239E-06 -4.664638E-03 2.625610E-02 -6.427565E-04 # Covariance matrix: 2.2541E-13 -8.3733E-14 -1.6480E-14 1.1582E-14 8.2182E-14 -3.3290E-13 -8.3733E-14 5.2693E-14 1.0969E-14 -8.5656E-15 -4.7934E-15 2.4454E-13 -1.6480E-14 1.0969E-14 1.2297E-13 -2.7123E-14 -7.0895E-15 6.0397E-14 1.1582E-14 -8.5656E-15 -2.7123E-14 8.9420E-15 2.1966E-15 -4.6441E-14 8.2182E-14 -4.7934E-15 -7.0895E-15 2.1966E-15 1.9765E-13 -6.8503E-14 -3.3290E-13 2.4454E-13 6.0397E-14 -4.6441E-14 -6.8503E-14 1.3271E-12 # lat0 lon0 xBary yBary zBary JD0 -12.450410 26.549393 0.270302 -0.207528 -0.940480 2456569.775398 # Heliocentric elements and errors Epoch: 2456570.5000 = 2013/10/05 Mean Anomaly: 342.18160 +/- 0.026 Argument of Peri: 253.23588 +/- 0.032 Long of Asc Node: 155.64703 +/- 0.001 Inclination: 15.58362 +/- 0.000 Eccentricity: 0.09754956 +/- 0.0001 Semi-Major Axis: 42.97576010 +/- 0.0034 Time of Perihelion: 2461663.8087 +/- 13.8 Perihelion: 38.78349358 +/- 0.0038 Aphelion: 47.16802663 +/- 0.0044 Period (y) 281.7368 +/- 0.03 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 34.25053202 +/- 0.0006 Ecliptic Y 16.81482217 +/- 0.0003 Ecliptic Z -8.21131743 +/- 0.0001 Ecliptic XDOT -0.00142482 +/- 0.0000 Ecliptic YDOT 0.00245684 +/- 0.0000 Ecliptic ZDOT -0.00046038 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 39.02902188 +/- 0.0005 Geocenter to KBO 38.08644059 +/- 0.0006 # Hcoef: 7.11
The following table shows the complete astrometric record for 16SK56. 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 (16SK56) followed by the observatory code and reference code for the source of the astrometry.
2013 10 04.27462 01 56 24.121 -01 23 10.28 21.7g 16SK56 W84 C~55Zw 2013 11 03.07038 01 54 02.70 -01 37 59.8 23.4r 16SK56 W84 C~55Zw 2013 11 03.13272 01 54 02.40 -01 38 01.3 16SK56 W84 C~55Zw 2013 11 03.21249 01 54 02.02 -01 38 03.3 16SK56 W84 C~55Zw 2013 11 12.18492 01 53 20.450 -01 41 20.74 22.5z 16SK56 W84 C~55Zw 2013 11 23.19984 01 52 33.463 -01 44 22.59 22.4i 16SK56 W84 C~55Zw 2013 11 23.20121 01 52 33.462 -01 44 22.40 22.5z 16SK56 W84 C~55Zw 2014 10 29.27262 02 00 39.349 -01 17 37.02 22.7r 16SK56 W84 C~55Zw 2015 01 16.05758 01 56 52.454 -01 22 51.31 22.5z 16SK56 W84 C~55Zw 2015 12 04.06390 02 04 14.880 -01 09 55.30 22.6i 16SK56 W84 C~55Zw 2016 09 23.26496 02 15 45.242 -00 22 12.36 22.3z 16SK56 W84 C~55Zw 2016 09 24.26450 02 15 41.454 -00 22 46.12 22.7r 16SK56 W84 C~55Zw 2016 09 27.45010 02 15 28.94 -00 24 35.3 24.1g 16SK56 568 C~2eAH 2016 09 27.56964 02 15 28.45 -00 24 39.4 24.0g 16SK56 568 C~2eAH 2016 09 27.61902 02 15 28.25 -00 24 41.0 24.0g 16SK56 568 C~2eAH 2016 09 28.45917 02 15 24.86 -00 25 09.7 24.3g 16SK56 568 C~2eAH 2016 09 28.51982 02 15 24.61 -00 25 11.7 24.0g 16SK56 568 C~2eAH 2016 09 28.57907 02 15 24.36 -00 25 13.7 23.9g 16SK56 568 C~2eAH 2016 09 29.47095 02 15 20.72 -00 25 44.1 24.1g 16SK56 568 C~2eAH 2016 09 29.53138 02 15 20.46 -00 25 46.1 24.1g 16SK56 568 C~2eAI 2016 09 29.62808 02 15 20.06 -00 25 49.5 24.0g 16SK56 568 C~2eAI 2016 10 27.17201 02 13 12.787 -00 40 17.24 22.9i 16SK56 W84 C~55Zw 2016 10 27.17338 02 13 12.776 -00 40 17.25 23.1r 16SK56 W84 C~55Zw 2016 10 27.17475 02 13 12.769 -00 40 17.23 24.3g 16SK56 W84 C~55Zw 2016 12 23.05112 02 09 26.048 -00 52 10.55 23.1i 16SK56 W84 C~55Zw 2017 10 29.26760 02 19 16.900 -00 22 45.51 23.1r 16SK56 W84 C~55Zw 2017 10 29.26898 02 19 16.894 -00 22 45.52 23.0i 16SK56 W84 C~55Zw 2017 10 29.27036 02 19 16.885 -00 22 45.69 23.7g 16SK56 W84 C~55Zw 2017 11 01.09187 02 19 03.048 -00 24 00.03 22.4z 16SK56 W84 C~55Zw 2017 11 27.19986 02 17 01.583 -00 32 26.04 22.0i 16SK56 W84 C~55Zw 2017 12 11.04046 02 16 09.292 -00 34 13.25 22.8r 16SK56 W84 C~55Zw 2017 12 24.06521 02 15 32.550 -00 34 00.09 22.2z 16SK56 W84 C~55Zw 2017 12 26.11053 02 15 28.055 -00 33 47.88 22.5z 16SK56 W84 C~55Zw 2018 11 07.22958 02 24 47.698 -00 07 59.76 22.2i 16SK56 W84 C~55Zw 2018 11 07.23094 02 24 47.698 -00 07 59.81 22.5r 16SK56 W84 C~55Zw 2019 11 02.42952 02 31 26.72 +00 12 31.8 22.6i 16SK56 T09 C~7bNz 2019 11 02.49727 02 31 26.38 +00 12 30.3 22.8i 16SK56 T09 C~7bNz 2019 11 02.56170 02 31 26.06 +00 12 28.6 22.9i 16SK56 T09 C~7bNz 2019 11 02.58541 02 31 25.95 +00 12 27.8 22.8i 16SK56 T09 C~7bNz 2021 11 26.286207 02 41 59.046 +00 41 27.23 22.8w 16SK56 F51 C~5HJi 2021 11 26.299142 02 41 58.978 +00 41 27.03 22.9w 16SK56 F51 C~5HJi 2021 11 26.312593 02 41 58.897 +00 41 27.03 23.0w 16SK56 F51 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 -0.21 0.00 -0.31
2 0.0816 0.00 -0.00 0.00 -0.01
3 0.0817 0.00 0.01 0.00 0.01
4 0.0820 0.00 0.08 0.00 -0.05
5 0.1065 0.00 0.01 0.00 -0.04
6 0.1367 0.00 0.03 0.00 -0.06
7 0.1367 0.00 0.10 0.00 0.14
8 1.0678 0.00 0.09 0.00 0.10
9 1.2835 0.00 0.11 0.00 -0.08
10 2.1651 0.00 -0.08 0.00 -0.04
11 2.9705 0.00 -0.01 0.00 -0.20
12 2.9733 0.00 0.18 0.00 0.22
13 2.9820 0.00 -0.06 0.00 0.06
14 2.9823 0.00 -0.05 0.00 0.04
15 2.9825 0.00 -0.01 0.00 0.13
16 2.9848 0.00 -0.07 0.00 0.06
17 2.9849 0.00 -0.03 0.00 0.13
18 2.9851 0.00 -0.08 0.00 0.14
19 2.9875 0.00 0.01 0.00 0.09
20 2.9877 0.00 -0.07 0.00 0.15
21 2.9880 0.00 0.03 0.00 0.03
22 3.0634 0.00 0.06 0.00 -0.02
23 3.0634 0.00 0.00 0.00 0.01
24 3.0634 0.00 -0.00 0.00 0.07
25 3.2191 0.00 -0.10 0.00 -0.05
26 4.0684 0.00 0.04 0.00 -0.06
27 4.0684 0.00 0.06 0.00 -0.04
28 4.0684 0.00 0.03 0.00 -0.17
29 4.0762 0.00 0.02 0.00 -0.04
30 4.1476 0.00 -0.07 0.00 0.02
31 4.1855 0.00 -0.03 0.00 -0.08
32 4.2212 0.00 0.14 0.00 -0.02
33 4.2268 0.00 -0.05 0.00 -0.05
34 5.0923 0.00 -0.08 0.00 0.04
35 5.0923 0.00 0.02 0.00 0.02
36 6.0785 0.00 0.02 0.00 -0.06
37 6.0786 0.00 0.03 0.00 0.17
38 6.0788 0.00 0.08 0.00 0.12
39 6.0789 0.00 0.21 0.00 -0.07
40 8.1451 0.00 0.13 0.00 -0.12
41 8.1452 0.00 0.01 0.00 -0.14
42 8.1452 0.00 -0.26 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.
16SK56 quality flag:3 Type: SCATEXTD SCATEXTD SCATEXTD axisobj 43.211 43.211 43.211 ecceobj 0.101 0.101 0.101 incobj 15.550 15.550 15.550 qmin 38.145 38.126 38.126 qmax 47.937 47.917 47.910 amean 42.888 42.889 42.889 amin 42.546 42.546 42.543 amax 43.254 43.263 43.251 emean 0.095 0.095 0.095 emin 0.082 0.081 0.081 emax 0.108 0.109 0.109 imean 14.897 14.906 14.897 imin 14.344 14.343 14.332 imax 15.556 15.555 15.556 excite_mean 0.274 0.274 0.274 fracstop 1.000 1.000 1.000 cjmean 2.999 2.999 2.999 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 180.1 181.5 180.8 kozaiamp 180.0 180.0 180.0