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: 13UK17 # Created Fri Nov 22 02:09:46 2024 # Orbit generated by ELGB # -->Covariance matrix from a Bernstein fit # Fitting 41 observations of 41 # Arc: 5.11y # First observation: 2013/08/02 # Last observation: 2018/09/12 # Chi-squared of fit: 32.08 DOF: 76 RMS: 0.16 # Min/Max residuals: -1.00 0.26 # Exact a, adot, b, bdot, g, gdot: 1.512720E-05 1.232475E-02 3.319112E-06 5.696749E-03 1.852097E-02 -1.843593E-03 # Covariance matrix: 1.6714E-13 -7.6928E-14 1.4507E-14 -2.5419E-14 7.5572E-14 -8.5333E-13 -7.6928E-14 1.3829E-13 -3.4316E-14 6.5920E-14 3.3372E-14 2.2285E-12 1.4507E-14 -3.4316E-14 7.4153E-14 -3.6766E-14 -1.0602E-14 -6.0803E-13 -2.5419E-14 6.5920E-14 -3.6766E-14 4.6618E-14 2.3313E-14 1.1736E-12 7.5572E-14 3.3372E-14 -1.0602E-14 2.3313E-14 1.1820E-13 7.9535E-13 -8.5333E-13 2.2285E-12 -6.0803E-13 1.1736E-12 7.9535E-13 3.9689E-11 # lat0 lon0 xBary yBary zBary JD0 -3.024472 15.881670 0.927028 -0.022004 -0.417062 2456507.055948 # Heliocentric elements and errors Epoch: 2456506.5000 = 2013/08/02 Mean Anomaly: 219.67425 +/- 0.062 Argument of Peri: 149.36477 +/- 0.060 Long of Asc Node: 21.36998 +/- 0.000 Inclination: 24.97279 +/- 0.000 Eccentricity: 0.28562785 +/- 0.0002 Semi-Major Axis: 43.73348480 +/- 0.0035 Time of Perihelion: 2497683.4728 +/- 19.9 Perihelion: 31.24198358 +/- 0.0081 Aphelion: 56.22498602 +/- 0.0089 Period (y) 289.2207 +/- 0.03 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 52.51467839 +/- 0.0010 Ecliptic Y 13.98059222 +/- 0.0003 Ecliptic Z -2.84857906 +/- 0.0001 Ecliptic XDOT -0.00072382 +/- 0.0000 Ecliptic YDOT 0.00168922 +/- 0.0000 Ecliptic ZDOT 0.00085547 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 54.41850126 +/- 0.0009 Geocenter to KBO 53.99297920 +/- 0.0010 # Hcoef: 6.49
The following table shows the complete astrometric record for 13UK17. 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 (13UK17) followed by the observatory code and reference code for the source of the astrometry.
2013 08 02.55517 01 03 10.904 +03 27 23.68 23.5r 13UK17 568 C~2NKZ 2013 09 04.41206 01 01 59.112 +03 20 20.63 24.2r 13UK17 568 C~2NKZ 2013 09 04.45483 01 01 58.977 +03 20 19.86 23.9r 13UK17 568 C~2NKZ 2013 10 06.39317 01 00 08.050 +03 10 06.19 23.6r 13UK17 568 C~2NKZ 2013 10 06.45289 01 00 07.814 +03 10 04.60 23.5r 13UK17 568 C~2NKZ 2013 10 06.46664 01 00 07.774 +03 10 04.68 23.7r 13UK17 568 C~2NKZ 2013 10 06.47596 01 00 07.730 +03 10 04.59 23.7r 13UK17 568 C~2NKZ 2013 10 09.51669 00 59 56.338 +03 09 04.19 23.8r 13UK17 568 C~2NKZ 2013 10 31.23488 00 58 37.064 +03 02 23.39 24.2r 13UK17 568 C~2NKZ 2013 10 31.27795 00 58 36.933 +03 02 22.81 23.8r 13UK17 568 C~2NKZ 2013 10 31.32073 00 58 36.771 +03 02 21.96 24.0r 13UK17 568 C~2NKZ 2013 11 01.26121 00 58 33.545 +03 02 06.54 23.9r 13UK17 568 C~2NKZ 2013 11 01.38296 00 58 33.127 +03 02 04.56 24.0r 13UK17 568 C~2NKZ 2013 11 05.38795 00 58 19.662 +03 01 01.44 24.0r 13UK17 568 C~2NKZ 2013 11 29.22393 00 57 13.176 +02 56 26.51 23.7r 13UK17 568 C~2NKZ 2014 06 27.58224 01 05 18.787 +04 01 41.33 24.0r 13UK17 568 C~2NKZ 2014 06 28.58731 01 05 19.933 +04 01 48.69 24.0r 13UK17 568 C~2NKZ 2014 07 23.58328 01 05 27.039 +04 02 38.54 24.3r 13UK17 568 C~2NKZ 2014 07 27.56394 01 05 24.323 +04 02 22.90 24.1r 13UK17 568 C~2NKZ 2014 08 22.56038 01 04 42.206 +03 58 19.66 24.0r 13UK17 568 C~2NKZ 2014 08 23.51871 01 04 39.925 +03 58 06.81 25.6u 13UK17 568 C~2NKZ 2014 08 23.52297 01 04 39.891 +03 58 06.79 24.9u 13UK17 568 C~2NKZ 2014 08 23.52723 01 04 39.896 +03 58 06.68 25.7u 13UK17 568 C~2NKZ 2014 08 23.53149 01 04 39.872 +03 58 06.62 25.0u 13UK17 568 C~2NKZ 2014 08 28.42232 01 04 27.431 +03 56 55.36 23.8r 13UK17 568 C~2NKZ 2014 10 23.28767 01 01 13.769 +03 39 29.59 23.6r 13UK17 568 C~2NKZ 2014 10 27.25444 01 00 59.394 +03 38 18.02 23.8r 13UK17 568 C~2NKZ 2014 11 24.23218 00 59 32.043 +03 31 42.11 24.1r 13UK17 568 C~2NKZ 2014 11 25.22838 00 59 29.568 +03 31 32.65 23.9r 13UK17 568 C~2NKZ 2014 12 17.24695 00 58 49.603 +03 29 42.05 23.7r 13UK17 568 C~2NKZ 2014 12 17.26663 00 58 49.580 +03 29 41.83 23.7r 13UK17 568 C~2NKZ 2015 01 18.22018 00 58 50.044 +03 33 16.71 24.0r 13UK17 568 C~2NKZ 2017 07 24.58173 01 11 49.631 +05 45 59.74 13UK17 568 C~2NKZ 2017 08 25.62549 01 11 00.318 +05 41 54.31 13UK17 568 C~2NKZ 2017 08 30.48798 01 10 47.670 +05 40 47.30 24.0w 13UK17 568 C~2NKZ 2017 08 30.54049 01 10 47.518 +05 40 46.51 24.0w 13UK17 568 C~2NKZ 2018 09 09.394230 01 12 29.95 +06 13 24.8 24.3r 13UK17 568 C~2rbS 2018 09 09.606530 01 12 29.28 +06 13 21.3 24.2r 13UK17 568 C~2rbS 2018 09 11.425730 01 12 23.52 +06 12 51.1 24.1r 13UK17 568 C~2rbS 2018 09 12.616000 01 12 19.67 +06 12 31.0 24.1r 13UK17 568 C~2rbS 2018 09 12.624350 01 12 19.65 +06 12 30.8 24.1r 13UK17 568 C~2rbS
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 -1.00 0.00 -0.07
2 0.0900 0.00 0.07 0.00 0.07
3 0.0901 0.00 0.01 0.00 0.04
4 0.1775 0.00 0.04 0.00 0.02
5 0.1777 0.00 -0.09 0.00 -0.38
6 0.1777 0.00 0.10 0.00 -0.02
7 0.1777 0.00 -0.03 0.00 0.07
8 0.1861 0.00 0.19 0.00 0.03
9 0.2455 0.00 -0.04 0.00 -0.04
10 0.2456 0.00 0.26 0.00 0.09
11 0.2458 0.00 0.08 0.00 -0.06
12 0.2483 0.00 0.12 0.00 -0.03
13 0.2487 0.00 0.21 0.00 -0.03
14 0.2596 0.00 0.01 0.00 0.08
15 0.3249 0.00 -0.08 0.00 0.01
16 0.9008 0.00 0.15 0.00 0.03
17 0.9036 0.00 0.06 0.00 0.01
18 0.9720 0.00 -0.00 0.00 0.23
19 0.9829 0.00 -0.06 0.00 0.07
20 1.0541 0.00 0.05 0.00 -0.17
21 1.0567 0.00 0.26 0.00 0.13
22 1.0567 0.00 -0.09 0.00 0.17
23 1.0567 0.00 0.14 0.00 0.12
24 1.0567 0.00 -0.06 0.00 0.12
25 1.0701 0.00 0.12 0.00 -0.03
26 1.2231 0.00 0.06 0.00 0.04
27 1.2339 0.00 -0.13 0.00 0.01
28 1.3105 0.00 -0.16 0.00 -0.20
29 1.3133 0.00 -0.03 0.00 -0.09
30 1.3736 0.00 -0.00 0.00 0.06
31 1.3736 0.00 0.00 0.00 -0.16
32 1.4611 0.00 -0.07 0.00 -0.11
33 3.9754 0.00 -0.01 0.00 -0.05
34 4.0632 0.00 0.12 0.00 0.04
35 4.0765 0.00 0.08 0.00 0.01
36 4.0766 0.00 -0.00 0.00 -0.02
37 5.1029 0.00 -0.24 0.00 0.02
38 5.1035 0.00 -0.12 0.00 -0.00
39 5.1085 0.00 -0.05 0.00 -0.00
40 5.1117 0.00 0.08 0.00 0.03
41 5.1118 0.00 0.19 0.00 -0.02
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.
13UK17 quality flag:3 Type: 7:4EEE 7:4EEE 7:4EEE Type: 7:4EII 7:4EII 7:4EII axisobj 43.887 43.887 43.887 ecceobj 0.280 0.280 0.280 incobj 24.885 24.885 24.885 qmin 30.120 30.120 30.120 qmax 57.824 57.824 57.823 amean 43.724 43.724 43.724 amin 43.339 43.337 43.341 amax 44.197 44.196 44.197 emean 0.242 0.242 0.242 emin 0.125 0.125 0.125 emax 0.310 0.310 0.310 imean 26.019 26.019 26.019 imin 24.163 24.163 24.162 imax 28.759 28.759 28.758 excite_mean 0.505 0.505 0.505 fracstop 1.000 1.000 1.000 cjmean 2.784 2.784 2.784 libcent 0 178.4 178.4 178.4 libamp 0 51.7 51.8 51.7 libcent 1 183.2 183.2 183.3 libamp 1 101.9 101.9 101.8 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 180.6 180.6 180.6 kozaiamp 39.9 39.9 39.9