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: 13SD101 # Created Tue Apr 1 01:09:41 2025 # Orbit generated from Bernstein formalism # Fitting 38 observations of 38 # Arc: 4.07y # First observation: 2013/08/05 # Last observation: 2017/08/30 Preliminary a, adot, b, bdot, g, gdot: -0.000162 0.023325 -0.000002 0.000542 0.023787 0.000000 # Chi-squared of fit: 11.17 DOF: 70 RMS: 0.10 # Min/Max residuals: -0.35 0.36 # Exact a, adot, b, bdot, g, gdot: 1.500419E-05 2.322601E-02 3.129865E-07 5.412229E-04 2.384910E-02 6.313933E-04 # Covariance matrix: 1.1884E-13 -1.7415E-14 2.0522E-16 1.7406E-16 8.2955E-14 1.2252E-13 -1.7415E-14 2.6251E-13 -1.3685E-15 5.9001E-15 1.4110E-13 2.8204E-12 2.0522E-16 -1.3685E-15 5.9022E-14 -2.1857E-14 -4.9658E-16 -1.5848E-14 1.7406E-16 5.9001E-15 -2.1857E-14 2.3214E-14 3.5650E-15 6.9577E-14 8.2955E-14 1.4110E-13 -4.9658E-16 3.5650E-15 1.9123E-13 1.7570E-12 1.2252E-13 2.8204E-12 -1.5848E-14 6.9577E-14 1.7570E-12 3.3306E-11 # lat0 lon0 xBary yBary zBary JD0 -0.899853 11.742401 0.869205 -0.008242 -0.526581 2456510.005588 # Heliocentric elements and errors Epoch: 2456510.5000 = 2013/08/06 Mean Anomaly: 11.25466 +/- 0.603 Argument of Peri: 314.22467 +/- 0.632 Long of Asc Node: 44.57528 +/- 0.007 Inclination: 1.58841 +/- 0.000 Eccentricity: 0.02220887 +/- 0.0001 Semi-Major Axis: 43.41089033 +/- 0.0025 Time of Perihelion: 2453244.4228 +/- 175.0 Perihelion: 42.44678363 +/- 0.0042 Aphelion: 44.37499703 +/- 0.0043 Period (y) 286.0265 +/- 0.02 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 41.74006504 +/- 0.0008 Ecliptic Y 7.79155057 +/- 0.0001 Ecliptic Z -0.65844842 +/- 0.0000 Ecliptic XDOT -0.00047694 +/- 0.0000 Ecliptic YDOT 0.00262462 +/- 0.0000 Ecliptic ZDOT 0.00006113 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 42.46616117 +/- 0.0007 Geocenter to KBO 41.93030643 +/- 0.0008 # Hcoef: 7.32
The following table shows the complete astrometric record for 13SD101. 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 (13SD101) followed by the observatory code and reference code for the source of the astrometry.
2013 08 05.50481 00 44 35.898 +03 48 53.68 23.6r 13SD101 568 C~2NKO 2013 08 05.55805 00 44 35.793 +03 48 52.98 23.5r 13SD101 568 C~2NKO 2013 08 08.48371 00 44 29.989 +03 48 13.77 23.9r 13SD101 568 C~2NKO 2013 08 08.52252 00 44 29.880 +03 48 12.87 23.6r 13SD101 568 C~2NKO 2013 08 31.56880 00 43 23.653 +03 40 57.40 23.2r 13SD101 568 C~2NKO 2013 09 01.45434 00 43 20.489 +03 40 36.80 23.7r 13SD101 568 C~2NKO 2013 09 01.49328 00 43 20.349 +03 40 35.94 23.3r 13SD101 568 C~2NKO 2013 09 01.50224 00 43 20.309 +03 40 35.71 23.2r 13SD101 568 C~2NKO 2013 09 05.43382 00 43 05.790 +03 39 01.71 23.8r 13SD101 568 C~2NKO 2013 09 05.47268 00 43 05.608 +03 39 00.61 24.4r 13SD101 568 C~2NKO 2013 09 29.36482 00 41 25.731 +03 28 24.02 24.0r 13SD101 568 C~2NKO 2013 09 29.40366 00 41 25.562 +03 28 22.80 24.0r 13SD101 568 C~2NKO 2013 09 29.50581 00 41 25.098 +03 28 20.01 23.1r 13SD101 568 C~2NKO 2013 09 29.51034 00 41 25.063 +03 28 19.82 23.0r 13SD101 568 C~2NKO 2013 10 05.36346 00 40 59.055 +03 25 36.22 23.5r 13SD101 568 C~2NKO 2013 10 06.37195 00 40 54.572 +03 25 07.86 23.1r 13SD101 568 C~2NKO 2013 10 06.43634 00 40 54.273 +03 25 06.03 23.4r 13SD101 568 C~2NKO 2013 10 07.35873 00 40 50.180 +03 24 40.40 23.2r 13SD101 568 C~2NKO 2013 10 09.49639 00 40 40.681 +03 23 41.15 23.2r 13SD101 568 C~2NKO 2013 11 27.29631 00 37 45.258 +03 05 53.25 23.1r 13SD101 568 C~2NKO 2013 11 27.34255 00 37 45.147 +03 05 52.73 13SD101 568 C~2NKO 2013 12 05.24487 00 37 30.246 +03 04 29.66 24.6r 13SD101 568 C~2NKO 2014 06 25.60449 00 49 31.073 +04 22 42.99 13SD101 568 C~2NKO 2014 06 26.60333 00 49 32.678 +04 22 52.15 23.9r 13SD101 568 C~2NKO 2014 08 24.50155 00 48 41.622 +04 16 37.69 23.4r 13SD101 568 C~2NKO 2014 08 28.47368 00 48 28.915 +04 15 15.37 23.2r 13SD101 568 C~2NKO 2014 10 23.30719 00 44 36.454 +03 50 50.48 24.1r 13SD101 568 C~2NKO 2014 10 27.27389 00 44 20.001 +03 49 09.61 23.5r 13SD101 568 C~2NKO 2014 11 24.28665 00 42 44.724 +03 39 37.25 24.0r 13SD101 568 C~2NKO 2014 11 25.31299 00 42 42.136 +03 39 22.40 23.7r 13SD101 568 C~2NKO 2014 12 17.22935 00 42 07.092 +03 36 13.76 23.5r 13SD101 568 C~2NKO 2014 12 17.28612 00 42 07.064 +03 36 13.67 23.8r 13SD101 568 C~2NKO 2015 01 17.25897 00 42 29.607 +03 39 28.84 23.5r 13SD101 568 C~2NKO 2017 07 17.61600 01 04 15.699 +06 00 35.33 23.5w 13SD101 568 C~2NKO 2017 07 23.61854 01 04 14.799 +06 00 24.76 13SD101 568 C~2NKO 2017 08 25.50837 01 03 18.105 +05 54 11.99 23.5w 13SD101 568 C~2NKO 2017 08 30.45058 01 03 02.871 +05 52 35.49 23.6w 13SD101 568 C~2NKO 2017 08 30.49734 01 03 02.716 +05 52 34.54 23.4w 13SD101 568 C~2NKO
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 0.08 0.00 0.01
2 0.0001 -1.72 0.06 -0.03 -0.00
3 0.0082 -97.00 0.36 -2.22 0.14
4 0.0083 -98.86 -0.12 -2.42 -0.04
5 0.0714 -1181.50 0.03 -16.23 0.03
6 0.0738 -1233.15 -0.04 -16.69 -0.02
7 0.0739 -1235.41 0.03 -16.66 0.00
8 0.0739 -1236.05 -0.08 -16.64 0.02
9 0.0847 -1472.85 0.15 -18.26 -0.17
10 0.0848 -1475.79 -0.35 -18.21 -0.12
11 0.1502 -3101.13 0.07 -19.61 0.01
12 0.1503 -3103.94 0.10 -19.74 -0.15
13 0.1506 -3111.42 0.08 -19.59 -0.07
14 0.1506 -3111.98 -0.14 -19.56 -0.04
15 0.1666 -3534.47 0.02 -17.80 0.17
16 0.1694 -3607.36 0.02 -17.63 -0.03
17 0.1696 -3612.20 -0.09 -17.57 -0.02
18 0.1721 -3678.65 -0.03 -17.17 0.06
19 0.1779 -3832.78 0.00 -16.05 0.23
20 0.3115 -6670.15 -0.00 30.28 0.03
21 0.3117 -6671.89 -0.05 30.45 0.12
22 0.3333 -6910.04 -0.03 41.53 -0.12
23 0.8873 4858.86 -0.10 148.26 0.01
24 0.8901 4884.55 -0.11 147.36 0.03
25 1.0513 4034.98 -0.00 99.46 -0.03
26 1.0622 3827.77 0.08 97.61 0.02
27 1.2151 53.25 -0.10 104.29 -0.18
28 1.2259 -212.83 -0.01 107.54 0.01
29 1.3026 -1749.26 0.07 137.69 -0.04
30 1.3054 -1790.73 -0.06 139.16 0.07
31 1.3654 -2347.39 -0.06 170.59 0.06
32 1.3656 -2347.81 0.16 170.67 0.03
33 1.4504 -1960.86 0.04 218.39 0.02
34 3.9483 19371.79 -0.05 460.29 0.01
35 3.9647 19355.19 -0.00 455.65 -0.04
36 4.0548 18423.32 0.01 435.82 0.01
37 4.0683 18174.44 0.03 433.97 0.00
38 4.0684 18171.92 0.02 433.99 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.
13SD101 quality flag:3 Type: CLASSICAL CLASSICAL CLASSICAL axisobj 43.646 43.653 43.638 ecceobj 0.028 0.028 0.028 incobj 1.586 1.586 1.586 qmin 41.412 41.424 41.411 qmax 45.546 45.562 45.538 amean 43.397 43.405 43.390 amin 43.067 43.072 43.057 amax 43.738 43.745 43.727 emean 0.026 0.026 0.026 emin 0.007 0.006 0.006 emax 0.042 0.042 0.042 imean 1.218 1.218 1.217 imin 0.279 0.283 0.276 imax 1.916 1.913 1.916 excite_mean 0.035 0.035 0.034 fracstop 1.000 1.000 1.000 cjmean 3.093 3.093 3.093 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 186.9 188.1 185.9 kozaiamp 180.0 180.0 179.9