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: 13UF17 # Created Sun Dec 22 02:09:48 2024 # Orbit generated by ELGB # -->Covariance matrix from a Bernstein fit # Fitting 40 observations of 40 # Arc: 7.28y # First observation: 2013/08/02 # Last observation: 2020/11/14 # Chi-squared of fit: 84.30 DOF: 74 RMS: 0.26 # Min/Max residuals: -1.13 1.13 # Exact a, adot, b, bdot, g, gdot: 1.911475E-05 3.949582E-02 -5.923621E-06 -1.216715E-02 3.317612E-02 5.957330E-03 # Covariance matrix: 1.5219E-13 -2.9171E-15 6.4623E-15 -2.6274E-14 1.0655E-13 1.1520E-12 -2.9171E-15 3.2304E-13 2.7521E-14 -1.2137E-13 1.7066E-13 5.3602E-12 6.4623E-15 2.7521E-14 8.5744E-14 -8.3043E-14 1.9744E-14 6.9334E-13 -2.6274E-14 -1.2137E-13 -8.3043E-14 1.7534E-13 -8.4627E-14 -3.0768E-12 1.0655E-13 1.7066E-13 1.9744E-14 -8.4627E-14 1.9554E-13 3.7283E-12 1.1520E-12 5.3602E-12 6.9334E-13 -3.0768E-12 3.7283E-12 1.3596E-10 # lat0 lon0 xBary yBary zBary JD0 -1.095778 16.115577 0.928979 -0.007875 -0.413235 2456507.020968 # Heliocentric elements and errors Epoch: 2456506.5000 = 2013/08/02 Mean Anomaly: 19.46229 +/- 0.033 Argument of Peri: 150.78054 +/- 0.063 Long of Asc Node: 190.86838 +/- 0.000 Inclination: 17.11993 +/- 0.000 Eccentricity: 0.25154193 +/- 0.0002 Semi-Major Axis: 39.52804334 +/- 0.0048 Time of Perihelion: 2451599.1401 +/- 8.5 Perihelion: 29.58508314 +/- 0.0086 Aphelion: 49.47100354 +/- 0.0099 Period (y) 248.5228 +/- 0.05 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 29.60710687 +/- 0.0004 Ecliptic Y 7.59051929 +/- 0.0001 Ecliptic Z -0.57656730 +/- 0.0000 Ecliptic XDOT -0.00045718 +/- 0.0000 Ecliptic YDOT 0.00326159 +/- 0.0000 Ecliptic ZDOT -0.00101317 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 30.57000324 +/- 0.0004 Geocenter to KBO 30.14210112 +/- 0.0004 # Hcoef: 8.91
The following table shows the complete astrometric record for 13UF17. 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 (13UF17) followed by the observatory code and reference code for the source of the astrometry.
2013 08 02.52019 01 01 04.814 +05 19 38.78 23.8r 13UF17 568 C~2NKY 2013 08 02.56292 01 01 04.755 +05 19 37.99 23.8r 13UF17 568 C~2NKY 2013 08 30.43573 00 59 45.917 +05 07 05.32 23.8r 13UF17 568 C~2NKY 2013 08 31.43992 00 59 41.722 +05 06 30.07 23.7r 13UF17 568 C~2NKY 2013 08 31.48289 00 59 41.539 +05 06 28.61 23.8r 13UF17 568 C~2NKY 2013 09 04.41593 00 59 24.345 +05 04 05.95 23.7r 13UF17 568 C~2NKY 2013 09 04.45871 00 59 24.143 +05 04 04.32 23.6r 13UF17 568 C~2NKY 2013 10 06.38359 00 56 33.317 +04 41 52.43 23.7r 13UF17 568 C~2NKY 2013 10 06.44798 00 56 32.935 +04 41 49.55 23.3r 13UF17 568 C~2NKY 2013 10 06.45762 00 56 32.881 +04 41 49.06 23.6r 13UF17 568 C~2NKY 2013 10 06.46264 00 56 32.840 +04 41 48.88 23.5r 13UF17 568 C~2NKY 2013 10 09.51275 00 56 15.089 +04 39 35.06 23.6r 13UF17 568 C~2NKY 2013 10 31.23096 00 54 13.498 +04 24 23.06 23.8r 13UF17 568 C~2NKY 2013 10 31.27407 00 54 13.259 +04 24 21.40 23.7r 13UF17 568 C~2NKY 2013 10 31.31685 00 54 13.037 +04 24 19.71 23.8r 13UF17 568 C~2NKY 2013 11 01.25731 00 54 08.175 +04 23 43.21 23.5r 13UF17 568 C~2NKY 2013 11 01.37789 00 54 07.538 +04 23 38.62 23.9r 13UF17 568 C~2NKY 2013 11 05.38291 00 53 47.402 +04 21 07.35 23.6r 13UF17 568 C~2NKY 2013 11 29.22005 00 52 13.176 +04 09 02.93 24.0r 13UF17 568 C~2NKY 2013 12 04.24712 00 52 00.207 +04 07 16.52 23.7r 13UF17 568 C~2NKY 2013 12 04.29457 00 52 00.083 +04 07 15.44 23.6r 13UF17 568 C~2NKY 2013 12 06.21068 00 51 55.914 +04 06 39.94 23.8r 13UF17 568 C~2NKY 2014 06 27.59782 01 09 52.700 +05 35 34.37 23.9r 13UF17 568 C~2NKY 2014 06 28.60286 01 09 55.792 +05 35 42.46 23.9r 13UF17 568 C~2NKY 2014 07 24.56087 01 10 35.050 +05 34 59.83 23.7r 13UF17 568 C~2NKY 2014 07 27.59171 01 10 34.469 +05 34 22.95 23.8r 13UF17 568 C~2NKY 2014 08 22.56426 01 09 47.089 +05 24 53.44 24.0r 13UF17 568 C~2NKY 2014 10 23.36016 01 04 33.416 +04 43 49.40 23.5r 13UF17 568 C~2NKY 2014 10 26.45694 01 04 16.032 +04 41 42.93 23.6r 13UF17 568 C~2NKY 2014 10 27.39884 01 04 10.880 +04 41 04.71 23.7r 13UF17 568 C~2NKY 2014 11 24.23611 01 02 00.223 +04 25 13.91 23.9r 13UF17 568 C~2NKY 2014 11 24.24000 01 02 00.203 +04 25 13.95 23.8r 13UF17 568 C~2NKY 2014 11 25.23226 01 01 56.661 +04 24 47.84 24.1r 13UF17 568 C~2NKY 2014 11 25.23617 01 01 56.646 +04 24 47.68 23.8r 13UF17 568 C~2NKY 2014 12 17.26663 01 01 04.496 +04 18 06.61 23.9r 13UF17 568 C~2NKY 2015 01 17.29797 01 01 29.415 +04 19 15.45 23.8r 13UF17 568 C~2NKY 2015 08 20.51066 01 19 17.556 +05 38 38.24 23.8r 13UF17 568 C~2NKY 2015 12 07.38604 01 10 44.024 +04 33 47.32 23.6w 13UF17 568 C~2NKY 2020 11 14.212540 01 57 59.750 +05 40 26.61 24.3G 13UF17 G37 C~4Nl8 2020 11 14.293580 01 57 59.159 +05 40 25.93 13UF17 G37 C~4Nl8
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 -0.07 0.00 0.00
2 0.0001 0.00 -0.01 0.00 -0.02
3 0.0764 0.00 -0.02 0.00 -0.06
4 0.0792 0.00 -0.01 0.00 -0.06
5 0.0793 0.00 0.03 0.00 -0.00
6 0.0901 0.00 0.13 0.00 -0.05
7 0.0902 0.00 0.07 0.00 -0.10
8 0.1776 0.00 -0.00 0.00 -0.06
9 0.1778 0.00 -0.00 0.00 -0.11
10 0.1778 0.00 0.04 0.00 -0.18
11 0.1778 0.00 -0.12 0.00 -0.14
12 0.1862 0.00 -0.08 0.00 0.02
13 0.2456 0.00 0.12 0.00 -0.01
14 0.2457 0.00 -0.04 0.00 0.01
15 0.2458 0.00 0.04 0.00 -0.02
16 0.2484 0.00 0.04 0.00 -0.03
17 0.2488 0.00 -0.01 0.00 0.03
18 0.2597 0.00 -0.06 0.00 -0.12
19 0.3250 0.00 0.19 0.00 0.05
20 0.3387 0.00 0.02 0.00 0.08
21 0.3389 0.00 -0.13 0.00 -0.08
22 0.3441 0.00 0.05 0.00 0.07
23 0.9010 0.00 0.03 0.00 0.07
24 0.9037 0.00 0.06 0.00 -0.01
25 0.9748 0.00 -0.05 0.00 0.05
26 0.9831 0.00 0.06 0.00 0.03
27 1.0542 0.00 0.13 0.00 -0.00
28 1.2234 0.00 -0.06 0.00 0.13
29 1.2319 0.00 -0.70 0.00 0.28
30 1.2344 0.00 0.00 0.00 0.02
31 1.3107 0.00 0.03 0.00 -0.04
32 1.3107 0.00 -0.05 0.00 0.10
33 1.3134 0.00 0.04 0.00 0.07
34 1.3134 0.00 0.03 0.00 0.02
35 1.3737 0.00 0.10 0.00 0.13
36 1.4587 0.00 0.07 0.00 0.07
37 2.0479 0.00 0.12 0.00 0.02
38 2.3460 0.00 0.08 0.00 0.05
39 7.2846 0.00 1.13 0.00 -1.00
40 7.2848 0.00 -1.13 0.00 0.83
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.
13UF17 quality flag:3 Type: 3:2E 3:2E 3:2E axisobj 39.748 39.748 39.748 ecceobj 0.256 0.256 0.256 incobj 17.086 17.086 17.086 qmin 28.155 28.154 28.155 qmax 51.491 51.494 51.487 amean 39.455 39.455 39.455 amin 38.969 38.968 38.969 amax 40.040 40.041 40.039 emean 0.233 0.233 0.233 emin 0.187 0.187 0.187 emax 0.286 0.286 0.286 imean 17.878 17.877 17.877 imin 15.875 15.875 15.874 imax 19.584 19.584 19.584 excite_mean 0.387 0.387 0.387 fracstop 1.000 1.000 1.000 cjmean 2.880 2.880 2.880 libcent 0 180.3 180.3 180.3 libamp 0 112.3 112.3 112.3 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 94.7 94.5 94.9 kozaiamp 63.0 62.9 63.1