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: 13US17 # Created Fri Apr 26 01:15:33 2024 # Orbit generated from Bernstein formalism # Fitting 29 observations of 31 # Arc: 2.27y # First observation: 2013/08/30 # Last observation: 2015/12/07 Preliminary a, adot, b, bdot, g, gdot: -0.000119 0.022267 -0.000003 -0.000156 0.023378 0.000000 # Chi-squared of fit: 14.11 DOF: 52 RMS: 0.12 # Min/Max residuals: -0.40 0.25 # Exact a, adot, b, bdot, g, gdot: 1.534089E-05 2.237579E-02 -1.175249E-06 -1.547127E-04 2.358674E-02 1.093618E-03 # Covariance matrix: 1.5047E-13 3.8865E-15 3.2983E-16 -1.2020E-15 1.2632E-13 5.2664E-12 3.8865E-15 5.5250E-13 1.2771E-15 -3.8024E-15 3.9257E-13 2.4686E-11 3.2983E-16 1.2771E-15 1.1303E-13 -9.6545E-14 1.2713E-15 7.7538E-14 -1.2020E-15 -3.8024E-15 -9.6545E-14 1.5012E-13 -4.2887E-15 -2.1500E-13 1.2632E-13 3.9257E-13 1.2713E-15 -4.2887E-15 4.4786E-13 2.2037E-11 5.2664E-12 2.4686E-11 7.7538E-14 -2.1500E-13 2.2037E-11 1.5788E-09 # lat0 lon0 xBary yBary zBary JD0 -2.931438 16.544256 0.644842 -0.039766 -0.777416 2456534.940388 # Heliocentric elements and errors Epoch: 2456530.5000 = 2013/08/26 Mean Anomaly: 110.42519 +/- 1.270 Argument of Peri: 147.17251 +/- 1.256 Long of Asc Node: 114.48534 +/- 0.019 Inclination: 2.91246 +/- 0.000 Eccentricity: 0.03408661 +/- 0.0016 Semi-Major Axis: 42.62922313 +/- 0.0058 Time of Perihelion: 2425346.9755 +/- 358.5 Perihelion: 41.17613762 +/- 0.0676 Aphelion: 44.08230864 +/- 0.0677 Period (y) 278.3360 +/- 0.06 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 41.51772001 +/- 0.0012 Ecliptic Y 11.66353655 +/- 0.0003 Ecliptic Z -2.16822530 +/- 0.0001 Ecliptic XDOT -0.00062514 +/- 0.0000 Ecliptic YDOT 0.00252453 +/- 0.0000 Ecliptic ZDOT -0.00002429 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 43.17939741 +/- 0.0011 Geocenter to KBO 42.39670839 +/- 0.0012 # Hcoef: 7.96
The following table shows the complete astrometric record for 13US17. 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 (13US17) followed by the observatory code and reference code for the source of the astrometry.
2013 08 30.43961 01 05 29.351 +03 47 44.78 23.9r 13US17 568 C~2NKa 2013 08 31.44379 01 05 26.180 +03 47 21.87 24.5r 13US17 568 C~2NKa 2013 08 31.48677 01 05 26.059 +03 47 20.78 24.6r 13US17 568 C~2NKa 2013 08 31.50475 01 05 25.955 +03 47 20.29 24.8r 13US17 568 C~2NKa 2013 09 04.42370 01 05 13.007 +03 45 49.37 24.4r 13US17 568 C~2NKa 2013 09 04.46654 01 05 12.841 +03 45 48.11 24.3r 13US17 568 C~2NKa 2013 10 06.40501 01 03 04.002 +03 31 41.23 24.3r 13US17 568 C~2NKa 2013 10 06.48768 01 03 03.626 +03 31 39.00 24.1r 13US17 568 C~2NKa 2013 10 31.24669 01 01 17.031 +03 20 54.43 24.2r 13US17 568 C~2NKa 2013 10 31.28968 01 01 16.828 +03 20 53.46 24.0r 13US17 568 C~2NKa 2013 10 31.33240 01 01 16.658 +03 20 52.29 24.3r 13US17 568 C~2NKa 2013 11 01.27294 01 01 12.867 +03 20 30.47 23.9r 13US17 568 C~2NKa 2013 11 01.39814 01 01 12.350 +03 20 27.57 24.6r 13US17 568 C~2NKa 2013 11 29.31322 00 59 39.521 +03 12 06.51 24.8r 13US17 568 C~2NKa 2013 12 04.26342 00 59 28.209 +03 11 13.80 24.2r 13US17 568 C~2NKa 2013 12 04.31568 00 59 28.091 +03 11 13.19 24.1r 13US17 568 C~2NKa 2014 06 27.59391 01 10 58.119 +04 25 20.88 24.2r 13US17 568 C~2NKa 2014 06 28.59898 01 11 00.033 +04 25 28.18 24.4r 13US17 568 C~2NKa 2014 07 24.55698 01 11 20.373 +04 25 37.54 24.8r 13US17 568 C~2NKa 2014 07 27.58768 01 11 19.055 +04 25 16.45 23.6r 13US17 568 C~2NKa 2014 08 22.55261 01 10 37.855 +04 19 20.32 24.6r 13US17 568 C~2NKa 2014 08 28.41447 01 10 21.779 +04 17 22.33 24.4r 13US17 568 C~2NKa 2014 10 23.36792 01 06 37.629 +03 53 15.62 23.9r 13US17 568 C~2NKa 2014 10 25.28038 01 06 29.435 +03 52 26.98 23.7r 13US17 568 C~2NKa 2014 10 27.31342 01 06 20.817 +03 51 36.25 24.2r 13US17 568 C~2NKa 2014 10 27.36433 01 06 20.574 +03 51 34.93 24.2r 13US17 568 C~2NKa 2014 10 27.40661 01 06 20.403 +03 51 33.91 24.0r 13US17 568 C~2NKa 2014 11 24.23611 01 04 38.455 +03 42 08.52 23.7r 13US17 568 C~2NKa 2014 11 25.23226 01 04 35.583 +03 41 53.97 25.0r 13US17 568 C~2NKa 2015 01 17.24366 01 03 56.267 +03 41 31.17 24.5r 13US17 568 C~2NKa 2015 12 07.38604 01 08 49.706 +04 08 13.52 24.5w 13US17 568 C~2NKa
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 0.22
2 0.0027 -52.61 0.02 -3.03 -0.09
3 0.0029 -54.70 0.25 -3.35 -0.31
4 0.0029 -56.33 -0.40 -3.21 -0.13
5 0.0136 -270.16 0.19 -13.16 0.03
6 0.0138 -272.94 -0.13 -13.37 -0.10
7 0.1012 -2378.99 0.08 -58.14 0.00
8 0.1014 -2385.04 0.02 -58.04 0.08
9 0.1692 -4106.69 ( 0.43) -42.20 ( -0.08)
10 0.1693 -4109.87 0.09 -41.93 0.10
11 0.1695 -4112.68 0.11 -42.03 -0.09
12 0.1720 -4173.50 0.13 -40.43 0.05
13 0.1724 -4181.76 0.06 -40.15 0.07
14 0.2488 -5658.65 ( -0.21) 30.10 ( 0.51)
15 0.2624 -5835.46 -0.13 46.42 0.12
16 0.2625 -5837.33 -0.23 46.53 0.03
17 0.8245 5408.72 0.00 209.71 0.06
18 0.8273 5437.99 0.04 205.57 -0.01
19 0.8983 5723.06 0.04 98.44 -0.07
20 0.9066 5696.79 0.01 86.43 0.15
21 0.9777 4990.95 -0.19 -8.42 -0.03
22 0.9938 4723.53 0.02 -25.98 0.13
23 1.1470 1070.76 -0.03 -84.60 0.08
24 1.1522 938.85 -0.01 -82.73 0.00
25 1.1578 800.28 0.22 -80.35 -0.06
26 1.1579 796.41 -0.14 -80.19 0.03
27 1.1580 793.66 0.02 -80.15 -0.01
28 1.2342 -832.49 -0.00 -19.51 -0.13
29 1.2369 -877.78 0.17 -16.52 -0.16
30 1.3821 -1430.29 -0.13 187.51 0.03
31 2.2695 3240.40 -0.00 -8.64 -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.
13US17 quality flag:3 Type: CLASSICAL CLASSICAL CLASSICAL axisobj 42.859 42.881 42.838 ecceobj 0.035 0.039 0.031 incobj 2.912 2.912 2.912 qmin 40.515 40.385 40.653 qmax 44.911 45.104 44.681 amean 42.617 42.638 42.596 amin 42.293 42.310 42.269 amax 42.949 42.975 42.925 emean 0.027 0.032 0.024 emin 0.003 0.008 0.001 emax 0.046 0.050 0.041 imean 1.891 1.898 1.887 imin 0.743 0.742 0.744 imax 2.932 2.960 2.925 excite_mean 0.045 0.048 0.043 fracstop 1.000 1.000 1.000 cjmean 3.083 3.083 3.083 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 173.7 171.7 180.3 kozaiamp 180.0 180.0 180.0