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: 13UA17 # Created Sun Dec 22 02:09:47 2024 # Orbit generated from Bernstein formalism # Fitting 32 observations of 32 # Arc: 2.32y # First observation: 2013/08/11 # Last observation: 2015/12/07 Preliminary a, adot, b, bdot, g, gdot: -0.000225 0.033091 0.000001 0.001101 0.029298 0.000000 # Chi-squared of fit: 9.51 DOF: 58 RMS: 0.10 # Min/Max residuals: -0.19 0.19 # Exact a, adot, b, bdot, g, gdot: 1.858247E-05 3.304776E-02 7.598187E-07 1.107837E-03 2.937808E-02 3.714302E-03 # Covariance matrix: 1.5600E-13 -1.7484E-14 -2.8364E-16 2.5737E-15 1.1250E-13 1.3889E-12 -1.7484E-14 3.9938E-13 -2.9046E-15 1.5848E-14 2.1553E-13 8.0685E-12 -2.8364E-16 -2.9046E-15 9.7781E-14 -7.9009E-14 -1.7216E-15 -8.6667E-14 2.5737E-15 1.5848E-14 -7.9009E-14 1.2025E-13 1.0888E-14 4.6419E-13 1.1250E-13 2.1553E-13 -1.7216E-15 1.0888E-14 2.6098E-13 5.6579E-12 1.3889E-12 8.0685E-12 -8.6667E-14 4.6419E-13 5.6579E-12 2.3567E-10 # lat0 lon0 xBary yBary zBary JD0 -0.556523 15.639418 0.850821 -0.005344 -0.553817 2456516.008328 # Heliocentric elements and errors Epoch: 2456510.5000 = 2013/08/06 Mean Anomaly: 29.31099 +/- 0.098 Argument of Peri: 304.56672 +/- 0.147 Long of Asc Node: 30.28435 +/- 0.004 Inclination: 1.97910 +/- 0.001 Eccentricity: 0.15056392 +/- 0.0003 Semi-Major Axis: 39.52724363 +/- 0.0049 Time of Perihelion: 2449120.0443 +/- 24.7 Perihelion: 33.57586673 +/- 0.0142 Aphelion: 45.47862054 +/- 0.0147 Period (y) 248.5152 +/- 0.05 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 33.53965130 +/- 0.0006 Ecliptic Y 8.50897352 +/- 0.0002 Ecliptic Z -0.33055741 +/- 0.0000 Ecliptic XDOT -0.00050220 +/- 0.0000 Ecliptic YDOT 0.00305850 +/- 0.0000 Ecliptic ZDOT 0.00010002 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 34.60375858 +/- 0.0006 Geocenter to KBO 34.03898650 +/- 0.0006 # Hcoef: 8.80
The following table shows the complete astrometric record for 13UA17. 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 (13UA17) followed by the observatory code and reference code for the source of the astrometry.
2013 08 11.50755 00 58 28.867 +05 38 32.18 24.7r 13UA17 568 C~2NKX 2013 08 30.42396 00 57 28.629 +05 32 14.87 24.5r 13UA17 568 C~2NKX 2013 08 31.42817 00 57 24.655 +05 31 50.16 24.1r 13UA17 568 C~2NKX 2013 08 31.47118 00 57 24.473 +05 31 48.91 23.9r 13UA17 568 C~2NKX 2013 09 04.40817 00 57 08.203 +05 30 07.72 23.9r 13UA17 568 C~2NKX 2013 09 04.45095 00 57 08.010 +05 30 06.77 24.6r 13UA17 568 C~2NKX 2013 10 06.38359 00 54 29.104 +05 13 45.56 23.9r 13UA17 568 C~2NKX 2013 10 06.44798 00 54 28.774 +05 13 43.43 23.9r 13UA17 568 C~2NKX 2013 10 06.45762 00 54 28.710 +05 13 43.23 24.0r 13UA17 568 C~2NKX 2013 10 06.46264 00 54 28.694 +05 13 42.93 24.1r 13UA17 568 C~2NKX 2013 10 09.51275 00 54 12.292 +05 12 02.36 24.1r 13UA17 568 C~2NKX 2013 10 31.23096 00 52 20.147 +05 00 39.32 24.0r 13UA17 568 C~2NKX 2013 10 31.27407 00 52 19.934 +05 00 38.31 24.0r 13UA17 568 C~2NKX 2013 10 31.31685 00 52 19.727 +05 00 36.94 24.2r 13UA17 568 C~2NKX 2013 11 01.25731 00 52 15.236 +05 00 09.67 23.9r 13UA17 568 C~2NKX 2013 11 01.37789 00 52 14.661 +05 00 06.30 24.1r 13UA17 568 C~2NKX 2013 12 06.21068 00 50 11.347 +04 47 59.82 24.6r 13UA17 568 C~2NKX 2014 06 27.59003 01 05 19.658 +06 25 13.68 24.3r 13UA17 568 C~2NKX 2014 06 28.59510 01 05 22.024 +06 25 28.04 23.8r 13UA17 568 C~2NKX 2014 07 27.57207 01 05 45.680 +06 27 46.29 23.9r 13UA17 568 C~2NKX 2014 08 22.57202 01 04 54.413 +06 22 27.13 24.5r 13UA17 568 C~2NKX 2014 08 22.59325 01 04 54.350 +06 22 26.83 24.0r 13UA17 568 C~2NKX 2014 08 26.44705 01 04 41.551 +06 21 07.62 25.4u 13UA17 568 C~2NKX 2014 08 28.43479 01 04 34.474 +06 20 24.35 24.0r 13UA17 568 C~2NKX 2014 10 23.37959 01 00 00.079 +05 52 32.71 24.4r 13UA17 568 C~2NKX 2014 10 27.39496 00 59 39.483 +05 50 28.64 24.6r 13UA17 568 C~2NKX 2014 11 19.20228 00 57 57.236 +05 40 19.00 24.1r 13UA17 568 C~2NKX 2014 11 19.26959 00 57 56.962 +05 40 17.41 24.4r 13UA17 568 C~2NKX 2014 11 25.21887 00 57 36.092 +05 38 15.18 24.4r 13UA17 568 C~2NKX 2015 01 17.28768 00 57 05.898 +05 36 27.99 24.5r 13UA17 568 C~2NKX 2015 08 20.50656 01 11 55.608 +07 09 34.38 24.4r 13UA17 568 C~2NKX 2015 12 07.39423 01 03 55.892 +06 21 53.26 24.5w 13UA17 568 C~2NKX
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 -0.16 0.00 -0.03
2 0.0518 -975.23 -0.07 -1.89 0.02
3 0.0545 -1039.50 0.07 -1.83 0.05
4 0.0547 -1042.49 -0.08 -1.93 -0.08
5 0.0654 -1305.65 0.08 -1.69 -0.02
6 0.0656 -1308.68 0.06 -1.45 0.19
7 0.1530 -3877.08 -0.12 9.26 0.09
8 0.1532 -3882.46 0.19 9.20 -0.05
9 0.1532 -3883.41 0.08 9.39 0.13
10 0.1532 -3883.75 0.18 9.20 -0.06
11 0.1615 -4148.69 -0.17 11.14 -0.11
12 0.2210 -5959.07 -0.05 29.52 -0.06
13 0.2211 -5962.40 0.01 29.82 0.18
14 0.2212 -5965.79 -0.00 29.75 0.04
15 0.2238 -6038.28 -0.03 30.60 -0.06
16 0.2241 -6047.52 0.14 30.82 -0.04
17 0.3195 -8030.30 -0.18 75.49 -0.02
18 0.8763 6735.96 0.17 237.43 -0.08
19 0.8791 6774.08 -0.03 237.23 -0.05
20 0.9584 7153.18 -0.09 230.34 -0.06
21 1.0296 6324.14 -0.14 227.30 -0.02
22 1.0297 6323.16 -0.01 227.38 0.05
23 1.0402 6116.38 -0.06 227.12 -0.19
24 1.0457 6002.25 -0.00 227.47 0.07
25 1.1988 1579.87 0.11 252.32 0.03
26 1.2098 1248.45 0.11 255.91 -0.00
27 1.2723 -394.63 0.17 280.37 0.06
28 1.2724 -399.01 -0.08 280.48 0.05
29 1.2887 -733.59 -0.01 287.68 -0.15
30 1.4340 -1190.82 -0.03 362.47 0.03
31 2.0233 13217.96 0.07 454.71 0.03
32 2.3214 5504.43 -0.12 529.72 0.07
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.
13UA17 quality flag:3 Type: 3:2E 3:2E 3:2E axisobj 39.746 39.765 39.728 ecceobj 0.156 0.157 0.155 incobj 1.975 1.975 1.975 qmin 32.889 32.852 32.938 qmax 46.582 46.649 46.634 amean 39.458 39.458 39.458 amin 38.995 38.984 38.999 amax 39.990 39.963 39.972 emean 0.149 0.149 0.148 emin 0.132 0.130 0.131 emax 0.167 0.168 0.167 imean 1.849 1.840 1.849 imin 1.129 1.102 1.143 imax 2.458 2.487 2.457 excite_mean 0.152 0.153 0.152 fracstop 1.000 1.000 1.000 cjmean 3.025 3.025 3.026 libcent 0 179.7 179.7 179.0 libamp 0 96.0 97.7 95.3 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 178.8 182.6 176.8 kozaiamp 180.0 180.0 179.9