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: 13UX18 # Created Fri Apr 26 01:15:35 2024 # Orbit generated by ELGB # -->Covariance matrix from a Bernstein fit # Fitting 43 observations of 43 # Arc: 6.23y # First observation: 2013/08/02 # Last observation: 2019/10/26 # Chi-squared of fit: 10.95 DOF: 80 RMS: 0.09 # Min/Max residuals: -0.27 0.24 # Exact a, adot, b, bdot, g, gdot: 1.402776E-05 2.001238E-02 4.060286E-07 4.206831E-04 2.208638E-02 1.031342E-03 # Covariance matrix: 1.2527E-13 -5.0412E-14 1.4518E-15 -7.7934E-16 6.7366E-14 -4.1746E-13 -5.0412E-14 1.6559E-13 -6.5620E-16 2.9971E-15 5.8747E-14 1.4899E-12 1.4518E-15 -6.5620E-16 4.9008E-14 -1.7575E-14 1.2613E-15 -8.2539E-15 -7.7934E-16 2.9971E-15 -1.7575E-14 2.0221E-14 1.0909E-15 3.0824E-14 6.7366E-14 5.8747E-14 1.2613E-15 1.0909E-15 1.1815E-13 5.0711E-13 -4.1746E-13 1.4899E-12 -8.2539E-15 3.0824E-14 5.0711E-13 1.5358E-11 # lat0 lon0 xBary yBary zBary JD0 -2.672484 16.516483 0.931820 -0.018941 -0.406420 2456507.024878 # Heliocentric elements and errors Epoch: 2456506.5000 = 2013/08/02 Mean Anomaly: 146.61392 +/- 0.187 Argument of Peri: 143.49640 +/- 0.185 Long of Asc Node: 81.96886 +/- 0.007 Inclination: 2.88455 +/- 0.000 Eccentricity: 0.05438889 +/- 0.0001 Semi-Major Axis: 43.67330706 +/- 0.0026 Time of Perihelion: 2413573.1026 +/- 54.9 Perihelion: 41.29796420 +/- 0.0042 Aphelion: 46.04864991 +/- 0.0044 Period (y) 288.6239 +/- 0.03 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 44.01610406 +/- 0.0007 Ecliptic Y 12.08320197 +/- 0.0002 Ecliptic Z -2.11104701 +/- 0.0000 Ecliptic XDOT -0.00058672 +/- 0.0000 Ecliptic YDOT 0.00241457 +/- 0.0000 Ecliptic ZDOT 0.00004627 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 45.69328189 +/- 0.0007 Geocenter to KBO 45.27676892 +/- 0.0007 # Hcoef: 6.96
The following table shows the complete astrometric record for 13UX18. 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 (13UX18) followed by the observatory code and reference code for the source of the astrometry.
2013 08 02.52410 01 04 59.374 +04 01 28.06 23.5r 13UX18 568 C~2Yih 2013 08 02.56680 01 04 59.319 +04 01 27.58 23.4r 13UX18 568 C~2Yih 2013 08 30.43961 01 03 59.382 +03 53 57.52 13UX18 568 C~2Yih 2013 08 31.44379 01 03 56.317 +03 53 36.43 23.5r 13UX18 568 C~2Yih 2013 08 31.48677 01 03 56.184 +03 53 35.42 23.5r 13UX18 568 C~2Yih 2013 08 31.49523 01 03 56.132 +03 53 35.53 23.6r 13UX18 568 C~2Yih 2013 08 31.50005 01 03 56.134 +03 53 35.17 23.6r 13UX18 568 C~2Yih 2013 08 31.50475 01 03 56.126 +03 53 35.10 23.7r 13UX18 568 C~2Yih 2013 09 04.42370 01 03 43.628 +03 52 09.56 23.4r 13UX18 568 C~2Yih 2013 09 04.46654 01 03 43.481 +03 52 08.45 23.4r 13UX18 568 C~2Yih 2013 10 06.40501 01 01 40.243 +03 38 52.85 23.5r 13UX18 568 C~2Yih 2013 10 06.48768 01 01 39.883 +03 38 50.77 23.8r 13UX18 568 C~2Yih 2013 10 09.52833 01 01 27.109 +03 37 31.92 24.1r 13UX18 568 C~2Yih 2013 10 09.53489 01 01 27.079 +03 37 31.94 23.4r 13UX18 568 C~2Yih 2013 10 31.24669 00 59 58.392 +03 28 43.38 23.5r 13UX18 568 C~2Yih 2013 10 31.28968 00 59 58.213 +03 28 42.41 23.5r 13UX18 568 C~2Yih 2013 10 31.33240 00 59 58.053 +03 28 41.32 23.2r 13UX18 568 C~2Yih 2013 11 01.27294 00 59 54.443 +03 28 20.78 23.4r 13UX18 568 C~2Yih 2013 11 01.39814 00 59 53.938 +03 28 17.76 22.7r 13UX18 568 C~2Yih 2013 11 05.45105 00 59 38.787 +03 26 51.77 23.6r 13UX18 568 C~2Yih 2013 11 29.31322 00 58 25.711 +03 20 23.54 24.0r 13UX18 568 C~2Yih 2013 12 04.26342 00 58 14.926 +03 19 33.88 24.0r 13UX18 568 C~2Yih 2013 12 04.31568 00 58 14.822 +03 19 33.40 24.2r 13UX18 568 C~2Yih 2014 06 27.59391 01 08 59.944 +04 29 53.05 23.8r 13UX18 568 C~2Yih 2014 06 28.59898 01 09 01.658 +04 30 00.27 23.9r 13UX18 568 C~2Yih 2014 07 24.54528 01 09 18.702 +04 30 14.44 23.9r 13UX18 568 C~2Yih 2014 07 27.57602 01 09 17.225 +04 29 54.83 23.8r 13UX18 568 C~2Yih 2014 08 22.55261 01 08 36.220 +04 24 22.92 23.3r 13UX18 568 C~2Yih 2014 08 28.41447 01 08 20.613 +04 22 32.30 23.5r 13UX18 568 C~2Yih 2014 10 23.36792 01 04 46.155 +03 59 51.85 23.5r 13UX18 568 C~2Yih 2014 10 25.28038 01 04 38.355 +03 59 06.00 23.7r 13UX18 568 C~2Yih 2014 10 25.29035 01 04 38.303 +03 59 05.69 25.4u 13UX18 568 C~2Yih 2014 10 25.33867 01 04 38.121 +03 59 04.55 23.6r 13UX18 568 C~2Yih 2014 10 27.31342 01 04 30.150 +03 58 18.07 23.5r 13UX18 568 C~2Yih 2014 10 27.32760 01 04 30.085 +03 58 17.75 24.9u 13UX18 568 C~2Yih 2014 10 27.35430 01 04 29.987 +03 58 17.02 25.3u 13UX18 568 C~2Yih 2014 10 27.36433 01 04 29.947 +03 58 16.92 23.4r 13UX18 568 C~2Yih 2014 10 27.40661 01 04 29.771 +03 58 15.94 23.5r 13UX18 568 C~2Yih 2014 11 24.23611 01 02 52.998 +03 49 21.87 23.3r 13UX18 568 C~2Yih 2014 11 25.23226 01 02 50.273 +03 49 07.99 23.4r 13UX18 568 C~2Yih 2015 01 18.22018 01 02 14.443 +03 48 56.01 23.7r 13UX18 568 C~2Yih 2019 10 26.147490 01 25 52.144 +06 16 48.22 23.5G 13UX18 G37 C~3clS 2019 10 26.215760 01 25 51.862 +06 16 46.65 13UX18 G37 C~3clS
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 0.04 0.00 -0.03
3 0.0764 0.00 0.02 0.00 -0.09
4 0.0792 0.00 0.07 0.00 0.04
5 0.0793 0.00 0.11 0.00 -0.05
6 0.0793 0.00 -0.27 0.00 0.24
7 0.0793 0.00 -0.01 0.00 -0.02
8 0.0793 0.00 0.09 0.00 0.01
9 0.0901 0.00 -0.01 0.00 0.03
10 0.0902 0.00 -0.05 0.00 -0.12
11 0.1776 0.00 0.03 0.00 0.02
12 0.1779 0.00 -0.07 0.00 0.08
13 0.1862 0.00 -0.05 0.00 -0.06
14 0.1862 0.00 -0.08 0.00 0.13
15 0.2456 0.00 0.16 0.00 0.04
16 0.2458 0.00 -0.00 0.00 0.02
17 0.2459 0.00 0.11 0.00 -0.13
18 0.2485 0.00 0.01 0.00 0.05
19 0.2488 0.00 -0.25 0.00 -0.23
20 0.2599 0.00 0.03 0.00 0.00
21 0.3252 0.00 0.04 0.00 -0.15
22 0.3388 0.00 0.01 0.00 0.02
23 0.3389 0.00 0.08 0.00 0.00
24 0.9009 0.00 0.07 0.00 0.02
25 0.9037 0.00 -0.06 0.00 0.07
26 0.9747 0.00 -0.03 0.00 0.06
27 0.9830 0.00 0.17 0.00 -0.03
28 1.0542 0.00 -0.11 0.00 -0.18
29 1.0702 0.00 0.01 0.00 -0.05
30 1.2234 0.00 0.04 0.00 0.11
31 1.2286 0.00 -0.04 0.00 0.07
32 1.2287 0.00 -0.20 0.00 -0.01
33 1.2288 0.00 0.06 0.00 -0.00
34 1.2342 0.00 -0.01 0.00 0.02
35 1.2342 0.00 -0.12 0.00 0.03
36 1.2343 0.00 0.05 0.00 -0.08
37 1.2343 0.00 0.06 0.00 0.05
38 1.2344 0.00 0.01 0.00 0.06
39 1.3106 0.00 -0.04 0.00 0.11
40 1.3134 0.00 0.09 0.00 0.05
41 1.4612 0.00 0.02 0.00 -0.02
42 6.2303 0.00 -0.04 0.00 -0.04
43 6.2305 0.00 0.07 0.00 0.01
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.
13UX18 quality flag:3 Type: CLASSICAL CLASSICAL CLASSICAL axisobj 43.899 43.899 43.899 ecceobj 0.051 0.051 0.051 incobj 2.885 2.885 2.885 qmin 40.588 40.582 40.579 qmax 46.907 46.950 46.956 amean 43.662 43.662 43.662 amin 43.321 43.319 43.315 amax 44.016 44.029 44.020 emean 0.047 0.047 0.047 emin 0.029 0.029 0.028 emax 0.067 0.067 0.067 imean 1.107 1.107 1.107 imin 0.197 0.197 0.196 imax 1.715 1.715 1.714 excite_mean 0.052 0.052 0.052 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 187.7 187.6 187.5 kozaiamp 180.0 179.9 180.0