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: 13UR17 # Created Wed Apr 24 01:15:30 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: 31.97 DOF: 80 RMS: 0.15 # Min/Max residuals: -0.44 0.63 # Exact a, adot, b, bdot, g, gdot: 1.445427E-05 1.966924E-02 -8.418332E-07 -6.144636E-04 2.179806E-02 -7.499642E-04 # Covariance matrix: 1.2666E-13 -3.7986E-14 2.1637E-16 1.2615E-15 6.6037E-14 -2.8891E-13 -3.7986E-14 1.4696E-13 3.5176E-15 -5.5456E-15 6.5426E-14 1.3206E-12 2.1637E-16 3.5176E-15 5.3169E-14 -1.8789E-14 2.6133E-15 3.5523E-14 1.2615E-15 -5.5456E-15 -1.8789E-14 1.9804E-14 -2.3970E-15 -5.8008E-14 6.6037E-14 6.5426E-14 2.6133E-15 -2.3970E-15 1.1528E-13 5.8316E-13 -2.8891E-13 1.3206E-12 3.5523E-14 -5.8008E-14 5.8316E-13 1.3799E-11 # lat0 lon0 xBary yBary zBary JD0 -2.533876 16.879404 0.934379 -0.017697 -0.400560 2456507.024878 # Heliocentric elements and errors Epoch: 2456506.5000 = 2013/08/02 Mean Anomaly: 238.72583 +/- 0.080 Argument of Peri: 1.89599 +/- 0.078 Long of Asc Node: 142.01990 +/- 0.006 Inclination: 3.11484 +/- 0.000 Eccentricity: 0.07376464 +/- 0.0002 Semi-Major Axis: 44.41885869 +/- 0.0023 Time of Perihelion: 2492932.8219 +/- 24.6 Perihelion: 41.14231771 +/- 0.0072 Aphelion: 47.69539966 +/- 0.0073 Period (y) 296.0461 +/- 0.02 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 44.51104359 +/- 0.0007 Ecliptic Y 12.53278570 +/- 0.0002 Ecliptic Z -2.02816110 +/- 0.0000 Ecliptic XDOT -0.00081686 +/- 0.0000 Ecliptic YDOT 0.00233490 +/- 0.0000 Ecliptic ZDOT -0.00007280 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 46.28629201 +/- 0.0007 Geocenter to KBO 45.87569402 +/- 0.0007 # Hcoef: 7.64
The following table shows the complete astrometric record for 13UR17. 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 (13UR17) followed by the observatory code and reference code for the source of the astrometry.
2013 08 02.52410 01 06 07.257 +04 17 27.79 24.0r 13UR17 568 C~2NKa 2013 08 02.56680 01 06 07.210 +04 17 27.23 23.8r 13UR17 568 C~2NKa 2013 08 30.43961 01 05 08.919 +04 09 55.71 24.5r 13UR17 568 C~2NKa 2013 08 31.44379 01 05 05.911 +04 09 34.45 24.0r 13UR17 568 C~2NKa 2013 08 31.48677 01 05 05.791 +04 09 33.52 24.0r 13UR17 568 C~2NKa 2013 08 31.49523 01 05 05.792 +04 09 33.07 24.4r 13UR17 568 C~2NKa 2013 08 31.50005 01 05 05.783 +04 09 33.42 24.5r 13UR17 568 C~2NKa 2013 08 31.50475 01 05 05.726 +04 09 32.96 24.4r 13UR17 568 C~2NKa 2013 09 04.42370 01 04 53.497 +04 08 07.22 24.5r 13UR17 568 C~2NKa 2013 09 04.46654 01 04 53.345 +04 08 06.33 24.6r 13UR17 568 C~2NKa 2013 10 06.40501 01 02 52.263 +03 54 46.89 23.3r 13UR17 568 C~2NKa 2013 10 06.48768 01 02 51.904 +03 54 44.41 24.3r 13UR17 568 C~2NKa 2013 10 09.52833 01 02 39.329 +03 53 25.19 23.8r 13UR17 568 C~2NKa 2013 10 09.53489 01 02 39.280 +03 53 25.10 24.1r 13UR17 568 C~2NKa 2013 10 31.24669 01 01 11.803 +03 44 29.78 23.8r 13UR17 568 C~2NKa 2013 10 31.28968 01 01 11.635 +03 44 28.62 24.1r 13UR17 568 C~2NKa 2013 10 31.33240 01 01 11.469 +03 44 27.55 24.5r 13UR17 568 C~2NKa 2013 11 01.27294 01 01 07.901 +03 44 06.57 24.1r 13UR17 568 C~2NKa 2013 11 01.39814 01 01 07.431 +03 44 03.64 24.0r 13UR17 568 C~2NKa 2013 11 05.45105 01 00 52.427 +03 42 35.59 24.3r 13UR17 568 C~2NKa 2013 11 29.31322 00 59 40.059 +03 35 53.63 23.8r 13UR17 568 C~2NKa 2013 12 04.26342 00 59 29.345 +03 35 00.18 24.2r 13UR17 568 C~2NKa 2013 12 04.31568 00 59 29.232 +03 34 59.58 24.4r 13UR17 568 C~2NKa 2014 06 27.59391 01 10 08.266 +04 42 17.99 24.6r 13UR17 568 C~2NKa 2014 06 28.59898 01 10 10.005 +04 42 25.02 24.6r 13UR17 568 C~2NKa 2014 07 24.55698 01 10 27.848 +04 42 31.67 24.1r 13UR17 568 C~2NKa 2014 07 27.58768 01 10 26.477 +04 42 11.42 23.7r 13UR17 568 C~2NKa 2014 08 22.55261 01 09 46.852 +04 36 35.66 23.7r 13UR17 568 C~2NKa 2014 08 28.41447 01 09 31.607 +04 34 44.03 24.4r 13UR17 568 C~2NKa 2014 10 23.36792 01 06 00.497 +04 11 51.54 24.0r 13UR17 568 C~2NKa 2014 10 25.33867 01 05 52.555 +04 11 03.74 26.7r 13UR17 568 C~2NKa 2014 10 27.31342 01 05 44.674 +04 10 16.75 24.4r 13UR17 568 C~2NKa 2014 10 27.36433 01 05 44.483 +04 10 15.47 24.0r 13UR17 568 C~2NKa 2014 10 27.40661 01 05 44.313 +04 10 14.17 24.4r 13UR17 568 C~2NKa 2014 11 24.23611 01 04 08.447 +04 01 06.84 24.1r 13UR17 568 C~2NKa 2014 11 24.24000 01 04 08.452 +04 01 06.78 24.1r 13UR17 568 C~2NKa 2014 11 25.23226 01 04 05.734 +04 00 52.51 24.0r 13UR17 568 C~2NKa 2014 12 17.26271 01 03 23.056 +03 57 30.90 24.5r 13UR17 568 C~2NKa 2015 01 17.24366 01 03 28.014 +03 59 45.34 24.3r 13UR17 568 C~2NKa 2015 01 17.29797 01 03 28.071 +03 59 46.00 24.5r 13UR17 568 C~2NKa 2015 12 07.38604 01 07 52.918 +04 22 29.69 24.5w 13UR17 568 C~2NKa 2019 10 26.222980 01 27 26.190 +06 10 55.25 24.2G 13UR17 G37 C~3clS 2019 10 26.314830 01 27 25.788 +06 10 53.18 13UR17 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 0.06
2 0.0001 0.00 -0.01 0.00 -0.05
3 0.0764 0.00 0.03 0.00 0.12
4 0.0792 0.00 -0.06 0.00 0.14
5 0.0793 0.00 0.13 0.00 0.12
6 0.0793 0.00 0.54 0.00 -0.15
7 0.0793 0.00 0.63 0.00 0.30
8 0.0793 0.00 -0.01 0.00 -0.06
9 0.0901 0.00 -0.01 0.00 -0.01
10 0.0902 0.00 -0.17 0.00 0.06
11 0.1776 0.00 -0.08 0.00 0.18
12 0.1779 0.00 -0.25 0.00 -0.14
13 0.1862 0.00 -0.12 0.00 0.01
14 0.1862 0.00 -0.44 0.00 0.09
15 0.2456 0.00 -0.02 0.00 0.20
16 0.2458 0.00 -0.04 0.00 0.01
17 0.2459 0.00 -0.05 0.00 -0.10
18 0.2485 0.00 -0.17 0.00 0.03
19 0.2488 0.00 0.00 0.00 -0.11
20 0.2599 0.00 -0.16 0.00 -0.11
21 0.3252 0.00 0.07 0.00 -0.00
22 0.3388 0.00 0.15 0.00 -0.02
23 0.3389 0.00 0.07 0.00 -0.12
24 0.9009 0.00 -0.00 0.00 -0.23
25 0.9037 0.00 -0.04 0.00 0.01
26 0.9748 0.00 0.04 0.00 0.02
27 0.9831 0.00 -0.09 0.00 -0.06
28 1.0542 0.00 -0.29 0.00 0.14
29 1.0702 0.00 -0.06 0.00 0.06
30 1.2234 0.00 -0.01 0.00 -0.23
31 1.2288 0.00 -0.03 0.00 -0.15
32 1.2342 0.00 -0.11 0.00 0.09
33 1.2343 0.00 0.11 0.00 0.01
34 1.2344 0.00 0.12 0.00 -0.29
35 1.3106 0.00 -0.01 0.00 -0.02
36 1.3107 0.00 0.23 0.00 -0.02
37 1.3134 0.00 0.02 0.00 0.07
38 1.3737 0.00 0.10 0.00 0.04
39 1.4585 0.00 0.22 0.00 0.00
40 1.4587 0.00 -0.06 0.00 -0.00
41 2.3460 0.00 -0.02 0.00 0.04
42 6.2305 0.00 0.10 0.00 -0.03
43 6.2308 0.00 -0.11 0.00 0.13
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.
13UR17 quality flag:3 Type: CLASSICAL CLASSICAL CLASSICAL axisobj 44.640 44.640 44.640 ecceobj 0.069 0.069 0.069 incobj 3.109 3.109 3.109 qmin 40.231 40.234 40.219 qmax 48.808 48.829 48.786 amean 44.383 44.383 44.383 amin 44.033 44.028 44.029 amax 44.754 44.756 44.756 emean 0.075 0.075 0.075 emin 0.060 0.060 0.060 emax 0.091 0.091 0.091 imean 2.418 2.418 2.418 imin 1.741 1.741 1.741 imax 3.120 3.120 3.121 excite_mean 0.086 0.086 0.086 fracstop 1.000 1.000 1.000 cjmean 3.097 3.097 3.097 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 185.4 185.5 185.4 kozaiamp 180.0 180.0 180.0