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: 13UN17 # Created Fri Apr 19 01:15:33 2024 # Orbit generated by ELGB # -->Covariance matrix from a Bernstein fit # Fitting 44 observations of 44 # Arc: 5.11y # First observation: 2013/08/02 # Last observation: 2018/09/12 # Chi-squared of fit: 18.36 DOF: 82 RMS: 0.11 # Min/Max residuals: -0.24 0.54 # Exact a, adot, b, bdot, g, gdot: 1.513091E-05 2.126832E-02 2.307275E-07 8.233174E-04 2.276307E-02 9.204897E-05 # Covariance matrix: 1.7068E-13 -4.1007E-14 1.0964E-15 -4.5040E-16 9.6160E-14 -1.2009E-13 -4.1007E-14 1.5845E-13 -1.8925E-15 5.9570E-15 4.6586E-14 1.5537E-12 1.0964E-15 -1.8925E-15 5.5025E-14 -1.5274E-14 1.2100E-16 -1.8876E-14 -4.5040E-16 5.9570E-15 -1.5274E-14 1.1072E-14 2.4343E-15 6.3506E-14 9.6160E-14 4.6586E-14 1.2100E-16 2.4343E-15 1.1256E-13 6.3249E-13 -1.2009E-13 1.5537E-12 -1.8876E-14 6.3506E-14 6.3249E-13 1.6560E-11 # lat0 lon0 xBary yBary zBary JD0 -2.009338 16.286800 0.930238 -0.014364 -0.410220 2456507.017088 # Heliocentric elements and errors Epoch: 2456506.5000 = 2013/08/02 Mean Anomaly: 229.19063 +/- 0.261 Argument of Peri: 90.46931 +/- 0.260 Long of Asc Node: 57.55421 +/- 0.004 Inclination: 2.94638 +/- 0.000 Eccentricity: 0.02549230 +/- 0.0002 Semi-Major Axis: 43.60902119 +/- 0.0024 Time of Perihelion: 2494727.2576 +/- 76.4 Perihelion: 42.49732677 +/- 0.0072 Aphelion: 44.72071560 +/- 0.0072 Period (y) 287.9869 +/- 0.02 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 42.79657480 +/- 0.0006 Ecliptic Y 11.53798036 +/- 0.0002 Ecliptic Z -1.54026516 +/- 0.0000 Ecliptic XDOT -0.00070967 +/- 0.0000 Ecliptic YDOT 0.00245867 +/- 0.0000 Ecliptic ZDOT 0.00009872 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 44.35138456 +/- 0.0006 Geocenter to KBO 43.93082823 +/- 0.0006 # Hcoef: 7.87
The following table shows the complete astrometric record for 13UN17. 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 (13UN17) followed by the observatory code and reference code for the source of the astrometry.
2013 08 02.51631 01 03 07.272 +04 32 57.54 24.4r 13UN17 568 C~2NKZ 2013 08 02.55904 01 03 07.222 +04 32 57.01 24.6r 13UN17 568 C~2NKZ 2013 08 30.43177 01 02 04.939 +04 25 38.29 24.2r 13UN17 568 C~2NKZ 2013 08 31.43593 01 02 01.766 +04 25 17.35 24.5r 13UN17 568 C~2NKZ 2013 08 31.47896 01 02 01.623 +04 25 16.36 24.1r 13UN17 568 C~2NKZ 2013 09 04.41593 01 01 48.651 +04 23 50.79 24.1r 13UN17 568 C~2NKZ 2013 10 06.39713 00 59 41.475 +04 10 26.41 24.3r 13UN17 568 C~2NKZ 2013 10 06.47088 00 59 41.178 +04 10 24.38 24.1r 13UN17 568 C~2NKZ 2013 10 06.47992 00 59 41.113 +04 10 23.98 23.8r 13UN17 568 C~2NKZ 2013 10 09.52057 00 59 27.977 +04 09 03.75 24.2r 13UN17 568 C~2NKZ 2013 10 31.23884 00 57 57.029 +04 00 01.89 24.1r 13UN17 568 C~2NKZ 2013 10 31.28183 00 57 56.860 +04 00 01.18 24.5r 13UN17 568 C~2NKZ 2013 10 31.32461 00 57 56.697 +03 59 59.98 24.0r 13UN17 568 C~2NKZ 2013 11 01.26510 00 57 53.001 +03 59 38.58 24.4r 13UN17 568 C~2NKZ 2013 11 01.38800 00 57 52.509 +03 59 36.01 24.1r 13UN17 568 C~2NKZ 2013 11 05.42210 00 57 37.094 +03 58 07.28 24.3r 13UN17 568 C~2NKZ 2013 11 29.22781 00 56 22.986 +03 51 23.64 24.8r 13UN17 568 C~2NKZ 2013 11 29.23325 00 56 22.932 +03 51 23.57 24.3r 13UN17 568 C~2NKZ 2013 11 29.23812 00 56 22.920 +03 51 23.58 24.4r 13UN17 568 C~2NKZ 2013 11 29.27951 00 56 22.815 +03 51 22.93 24.4r 13UN17 568 C~2NKZ 2013 11 29.28398 00 56 22.797 +03 51 22.91 23.6r 13UN17 568 C~2NKZ 2013 11 29.30546 00 56 22.744 +03 51 22.74 24.5r 13UN17 568 C~2NKZ 2013 12 04.25494 00 56 11.917 +03 50 29.90 24.3r 13UN17 568 C~2NKZ 2013 12 04.30703 00 56 11.805 +03 50 29.33 24.6r 13UN17 568 C~2NKZ 2013 12 05.25309 00 56 09.941 +03 50 20.80 24.4r 13UN17 568 C~2NKZ 2014 06 28.59119 01 07 24.146 +05 03 52.04 24.8r 13UN17 568 C~2NKZ 2014 07 24.54916 01 07 41.232 +05 04 35.84 24.1r 13UN17 568 C~2NKZ 2014 07 27.57991 01 07 39.638 +05 04 18.87 24.1r 13UN17 568 C~2NKZ 2014 10 23.36792 01 02 59.754 +04 34 18.09 24.2r 13UN17 568 C~2NKZ 2014 10 27.40661 01 02 42.942 +04 32 39.63 24.1r 13UN17 568 C~2NKZ 2014 11 24.23611 01 01 04.114 +04 23 24.97 24.6r 13UN17 568 C~2NKZ 2014 11 25.23226 01 01 01.340 +04 23 10.43 24.9r 13UN17 568 C~2NKZ 2014 12 17.26663 01 00 18.288 +04 19 50.48 24.3r 13UN17 568 C~2NKZ 2015 01 17.29797 01 00 25.878 +04 22 23.59 24.4r 13UN17 568 C~2NKZ 2015 12 07.37370 01 05 00.494 +04 51 32.45 24.2w 13UN17 568 C~2NKZ 2017 07 24.60098 01 21 00.604 +06 35 06.34 24.5w 13UN17 568 C~2NKZ 2017 08 25.51775 01 20 16.218 +06 29 40.26 24.6w 13UN17 568 C~2NKZ 2017 08 30.45989 01 20 02.736 +06 28 12.25 24.5w 13UN17 568 C~2NKZ 2017 08 30.50665 01 20 02.603 +06 28 11.28 24.6w 13UN17 568 C~2NKZ 2018 09 09.39841 01 24 03.537 +06 55 20.79 13UN17 568 C~2kPT 2018 09 09.61045 01 24 02.818 +06 55 16.11 13UN17 568 C~2kPT 2018 09 11.43066 01 23 56.574 +06 54 37.23 13UN17 568 C~2kPT 2018 09 12.62030 01 23 52.396 +06 54 11.39 13UN17 568 C~2kPT 2018 09 12.62868 01 23 52.357 +06 54 11.00 13UN17 568 C~2kPT
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 -0.10 0.00 0.04
2 0.0001 0.00 -0.01 0.00 -0.07
3 0.0764 0.00 -0.03 0.00 -0.10
4 0.0792 0.00 0.00 0.00 0.07
5 0.0793 0.00 -0.04 0.00 -0.01
6 0.0901 0.00 0.04 0.00 0.07
7 0.1776 0.00 -0.02 0.00 0.08
8 0.1778 0.00 0.38 0.00 -0.00
9 0.1779 0.00 0.00 0.00 -0.16
10 0.1862 0.00 -0.11 0.00 -0.17
11 0.2456 0.00 -0.02 0.00 -0.09
12 0.2458 0.00 0.02 0.00 0.18
13 0.2459 0.00 0.15 0.00 -0.05
14 0.2485 0.00 -0.04 0.00 -0.09
15 0.2488 0.00 -0.09 0.00 0.11
16 0.2598 0.00 0.05 0.00 -0.00
17 0.3250 0.00 0.54 0.00 0.03
18 0.3250 0.00 -0.07 0.00 0.03
19 0.3250 0.00 -0.07 0.00 0.10
20 0.3252 0.00 -0.13 0.00 -0.06
21 0.3252 0.00 -0.23 0.00 -0.03
22 0.3252 0.00 -0.24 0.00 0.06
23 0.3388 0.00 0.04 0.00 0.01
24 0.3389 0.00 -0.01 0.00 -0.07
25 0.3415 0.00 -0.11 0.00 0.09
26 0.9037 0.00 0.12 0.00 0.04
27 0.9748 0.00 0.02 0.00 0.01
28 0.9831 0.00 0.03 0.00 -0.17
29 1.2234 0.00 0.10 0.00 -0.05
30 1.2345 0.00 -0.06 0.00 0.10
31 1.3107 0.00 -0.07 0.00 -0.04
32 1.3134 0.00 -0.06 0.00 -0.05
33 1.3737 0.00 0.04 0.00 0.25
34 1.4587 0.00 0.10 0.00 -0.02
35 2.3459 0.00 -0.04 0.00 0.06
36 3.9756 0.00 -0.01 0.00 -0.05
37 4.0630 0.00 -0.04 0.00 0.05
38 4.0765 0.00 -0.11 0.00 0.11
39 4.0766 0.00 -0.03 0.00 0.01
40 5.1030 0.00 -0.14 0.00 0.07
41 5.1036 0.00 0.07 0.00 -0.13
42 5.1086 0.00 -0.00 0.00 -0.03
43 5.1119 0.00 0.20 0.00 0.08
44 5.1119 0.00 0.06 0.00 -0.12
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.
13UN17 quality flag:3 Type: CLASSICAL CLASSICAL CLASSICAL axisobj 43.834 43.834 43.834 ecceobj 0.020 0.020 0.020 incobj 2.944 2.944 2.944 qmin 41.356 41.362 41.350 qmax 46.003 46.010 45.991 amean 43.579 43.579 43.579 amin 43.247 43.248 43.247 amax 43.920 43.921 43.919 emean 0.030 0.030 0.030 emin 0.012 0.012 0.012 emax 0.048 0.048 0.047 imean 1.712 1.712 1.712 imin 0.862 0.862 0.862 imax 2.414 2.413 2.415 excite_mean 0.043 0.043 0.043 fracstop 1.000 1.000 1.000 cjmean 3.094 3.094 3.094 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 170.7 170.7 170.8 kozaiamp 180.0 180.0 180.0