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: 13UH17 # Created Fri Nov 22 02:09:46 2024 # Orbit generated from Bernstein formalism # Fitting 39 observations of 39 # Arc: 4.08y # First observation: 2013/08/02 # Last observation: 2017/08/30 Preliminary a, adot, b, bdot, g, gdot: -0.000434 0.036600 0.000051 -0.005799 0.029990 0.000000 # Chi-squared of fit: 11.68 DOF: 72 RMS: 0.10 # Min/Max residuals: -0.21 0.34 # Exact a, adot, b, bdot, g, gdot: 1.868535E-05 3.568407E-02 -2.889638E-06 -5.659839E-03 2.969440E-02 -2.838334E-03 # Covariance matrix: 1.6195E-13 -7.7883E-14 -2.3812E-15 6.6095E-15 6.8573E-14 -2.7735E-13 -7.7883E-14 1.9238E-13 1.4575E-14 -2.9274E-14 5.8381E-14 1.2300E-12 -2.3812E-15 1.4575E-14 7.1930E-14 -3.3408E-14 7.1437E-15 1.1079E-13 6.6095E-15 -2.9274E-14 -3.3408E-14 3.3244E-14 -1.2346E-14 -2.2075E-13 6.8573E-14 5.8381E-14 7.1437E-15 -1.2346E-14 1.1421E-13 5.1917E-13 -2.7735E-13 1.2300E-12 1.1079E-13 -2.2075E-13 5.1917E-13 9.2761E-12 # lat0 lon0 xBary yBary zBary JD0 -2.142064 16.205512 0.929654 -0.015363 -0.411504 2456507.017088 # Heliocentric elements and errors Epoch: 2456500.5000 = 2013/07/27 Mean Anomaly: 346.26360 +/- 0.010 Argument of Peri: 219.78631 +/- 0.019 Long of Asc Node: 181.65573 +/- 0.000 Inclination: 9.33092 +/- 0.000 Eccentricity: 0.30551354 +/- 0.0001 Semi-Major Axis: 47.88401676 +/- 0.0034 Time of Perihelion: 2461118.5085 +/- 3.2 Perihelion: 33.25480106 +/- 0.0035 Aphelion: 62.51323246 +/- 0.0051 Period (y) 331.3554 +/- 0.04 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 32.97036626 +/- 0.0004 Ecliptic Y 8.61727503 +/- 0.0001 Ecliptic Z -1.25878803 +/- 0.0000 Ecliptic XDOT -0.00119429 +/- 0.0000 Ecliptic YDOT 0.00308013 +/- 0.0000 Ecliptic ZDOT -0.00051156 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 34.10112942 +/- 0.0004 Geocenter to KBO 33.67638364 +/- 0.0004 # Hcoef: 8.94
The following table shows the complete astrometric record for 13UH17. 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 (13UH17) followed by the observatory code and reference code for the source of the astrometry.
2013 08 02.51631 01 03 01.447 +04 23 44.15 24.7r 13UH17 568 C~2NKY 2013 08 02.55904 01 03 01.385 +04 23 43.58 24.2r 13UH17 568 C~2NKY 2013 08 30.43177 01 01 50.413 +04 13 12.89 25.3r 13UH17 568 C~2NKY 2013 08 31.43593 01 01 46.639 +04 12 43.35 24.1r 13UH17 568 C~2NKY 2013 08 31.47896 01 01 46.465 +04 12 41.92 24.0r 13UH17 568 C~2NKY 2013 10 06.39713 00 58 56.465 +03 52 04.93 24.2r 13UH17 568 C~2NKY 2013 10 06.47088 00 58 56.062 +03 52 02.03 23.6r 13UH17 568 C~2NKY 2013 10 31.23488 00 56 49.239 +03 37 43.91 24.3r 13UH17 568 C~2NKY 2013 10 31.27795 00 56 49.012 +03 37 42.55 24.4r 13UH17 568 C~2NKY 2013 10 31.32073 00 56 48.802 +03 37 41.28 24.3r 13UH17 568 C~2NKY 2013 11 01.26121 00 56 44.369 +03 37 11.84 24.2r 13UH17 568 C~2NKY 2013 11 01.38296 00 56 43.780 +03 37 07.93 24.2r 13UH17 568 C~2NKY 2013 11 05.38795 00 56 25.300 +03 35 06.91 24.2r 13UH17 568 C~2NKY 2013 11 29.22393 00 54 57.757 +03 25 45.16 23.8r 13UH17 568 C~2NKY 2013 12 04.25107 00 54 45.380 +03 24 28.93 24.5r 13UH17 568 C~2NKY 2013 12 04.30308 00 54 45.272 +03 24 28.18 24.1r 13UH17 568 C~2NKY 2014 06 27.59391 01 10 35.227 +04 54 12.09 24.4r 13UH17 568 C~2NKY 2014 06 28.59898 01 10 37.989 +04 54 21.09 24.4r 13UH17 568 C~2NKY 2014 07 24.55698 01 11 12.598 +04 54 24.04 24.3r 13UH17 568 C~2NKY 2014 07 27.58768 01 11 11.954 +04 53 55.92 24.5r 13UH17 568 C~2NKY 2014 08 22.55261 01 10 28.332 +04 46 08.97 24.1r 13UH17 568 C~2NKY 2014 08 22.56426 01 10 28.307 +04 46 08.60 24.0r 13UH17 568 C~2NKY 2014 08 28.41447 01 10 09.805 +04 43 33.97 24.2r 13UH17 568 C~2NKY 2014 08 28.42620 01 10 09.761 +04 43 33.66 24.3r 13UH17 568 C~2NKY 2014 10 25.28038 01 05 32.440 +04 10 36.56 23.8r 13UH17 568 C~2NKY 2014 10 25.33867 01 05 32.119 +04 10 34.81 24.5r 13UH17 568 C~2NKY 2014 10 27.31342 01 05 22.111 +04 09 28.74 24.1r 13UH17 568 C~2NKY 2014 10 27.33186 01 05 21.995 +04 09 28.21 25.3u 13UH17 568 C~2NKY 2014 10 27.36433 01 05 21.846 +04 09 27.14 24.4r 13UH17 568 C~2NKY 2014 10 27.40661 01 05 21.622 +04 09 25.77 24.5r 13UH17 568 C~2NKY 2014 11 24.23611 01 03 21.281 +03 56 39.18 24.1r 13UH17 568 C~2NKY 2014 11 25.23226 01 03 17.978 +03 56 18.94 24.5r 13UH17 568 C~2NKY 2014 12 17.26271 01 02 28.561 +03 51 32.85 24.4r 13UH17 568 C~2NKY 2015 01 17.24366 01 02 47.754 +03 54 22.96 24.4r 13UH17 568 C~2NKY 2015 12 07.38604 01 10 54.800 +04 22 06.24 24.7w 13UH17 568 C~2NKY 2017 07 24.60568 01 35 43.447 +06 19 15.52 24.6w 13UH17 568 C~2NKY 2017 08 25.50368 01 35 10.298 +06 10 58.68 24.1w 13UH17 568 C~2NKY 2017 08 30.44591 01 34 56.079 +06 08 52.98 24.6w 13UH17 568 C~2NKY 2017 08 30.49268 01 34 55.934 +06 08 51.76 24.5w 13UH17 568 C~2NKY
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 -0.03
2 0.0001 -1.07 0.02 -0.17 0.07
3 0.0764 -1223.32 -0.09 -175.82 0.05
4 0.0792 -1286.79 0.01 -181.45 0.16
5 0.0793 -1289.75 -0.14 -181.78 0.05
6 0.1776 -4113.91 0.13 -347.55 -0.05
7 0.1778 -4120.59 -0.04 -347.91 -0.20
8 0.2456 -6204.22 0.11 -410.09 -0.05
9 0.2458 -6207.88 -0.14 -410.03 0.05
10 0.2459 -6211.27 -0.14 -410.00 0.13
11 0.2484 -6283.92 0.15 -411.63 0.02
12 0.2488 -6293.57 0.06 -411.85 -0.08
13 0.2597 -6595.79 0.09 -417.07 0.34
14 0.3250 -8023.52 0.09 -430.76 -0.03
15 0.3388 -8224.21 -0.15 -429.69 -0.05
16 0.3389 -8226.00 -0.00 -429.76 -0.16
17 0.9010 6970.85 0.01 -901.77 -0.10
18 0.9037 7012.50 0.06 -909.16 -0.10
19 0.9748 7492.56 0.00 -1103.42 -0.04
20 0.9831 7472.94 -0.12 -1125.78 0.16
21 1.0542 6691.38 -0.04 -1309.50 0.04
22 1.0542 6690.89 0.07 -1309.70 -0.09
23 1.0702 6375.95 0.03 -1347.36 -0.07
24 1.0703 6375.22 -0.01 -1347.40 -0.03
25 1.2286 1785.26 0.05 -1592.09 -0.21
26 1.2288 1780.15 -0.12 -1591.87 0.09
27 1.2342 1616.53 0.14 -1595.66 -0.10
28 1.2343 1614.72 -0.12 -1595.49 0.09
29 1.2344 1612.25 0.14 -1595.63 -0.00
30 1.2345 1608.63 0.06 -1595.61 0.06
31 1.3107 -348.36 -0.18 -1614.72 0.09
32 1.3134 -401.77 -0.00 -1614.49 0.03
33 1.3737 -1194.53 0.10 -1595.41 -0.03
34 1.4585 -864.01 -0.10 -1548.35 -0.09
35 2.3460 6508.15 0.00 -2795.14 0.00
36 3.9756 29962.57 -0.02 -4668.90 -0.03
37 4.0629 29306.28 0.02 -4948.88 0.05
38 4.0765 29057.84 -0.03 -4986.88 0.03
39 4.0766 29055.33 0.03 -4987.21 0.03
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.
13UH17 quality flag:1 Type: 2:1E SCATNEAR 2:1E Type: 2:1EII axisobj 48.181 48.190 48.171 ecceobj 0.309 0.309 0.309 incobj 9.308 9.308 9.308 qmin 32.873 32.875 32.870 qmax 63.465 63.424 63.514 amean 47.796 47.796 47.796 amin 47.212 47.195 47.168 amax 48.481 48.488 48.514 emean 0.208 0.202 0.247 emin 0.126 0.073 0.184 emax 0.311 0.310 0.311 imean 14.978 15.172 13.441 imin 8.994 8.994 8.993 imax 18.097 19.010 16.181 excite_mean 0.340 0.340 0.342 fracstop 1.000 1.000 1.000 cjmean 3.003 3.002 3.001 libcent 0 174.4 -180.0 98.5 libamp 0 141.2 -180.0 64.9 libcent 1 -180.0 -180.0 207.0 libamp 1 -180.0 -180.0 133.6 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 212.5 222.0 234.5 kozaiamp 38.3 72.0 40.4