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: 13UT17 # Created Fri Apr 19 01:15:34 2024 # Orbit generated by ELGB # -->Covariance matrix from a Bernstein fit # Fitting 29 observations of 29 # Arc: 5.10y # First observation: 2013/08/02 # Last observation: 2018/09/09 # Chi-squared of fit: 4.84 DOF: 52 RMS: 0.07 # Min/Max residuals: -0.13 0.21 # Exact a, adot, b, bdot, g, gdot: 1.480808E-05 2.171160E-02 6.785302E-07 1.376339E-03 2.308870E-02 9.194512E-04 # Covariance matrix: 2.2880E-13 -1.1430E-13 2.8064E-15 -4.5268E-15 1.0823E-13 -7.1845E-13 -1.1430E-13 2.6544E-13 -6.4039E-15 1.5950E-14 4.5442E-14 2.6072E-12 2.8064E-15 -6.4039E-15 8.1943E-14 -2.9429E-14 -6.6356E-16 -6.8955E-14 -4.5268E-15 1.5950E-14 -2.9429E-14 2.7660E-14 4.2826E-15 1.7624E-13 1.0823E-13 4.5442E-14 -6.6356E-16 4.2826E-15 1.4152E-13 7.2296E-13 -7.1845E-13 2.6072E-12 -6.8955E-14 1.7624E-13 7.2296E-13 2.8847E-11 # lat0 lon0 xBary yBary zBary JD0 -1.806947 16.780107 0.933655 -0.012666 -0.402431 2456507.028758 # Heliocentric elements and errors Epoch: 2456506.5000 = 2013/08/02 Mean Anomaly: 126.54736 +/- 0.456 Argument of Peri: 204.76547 +/- 0.451 Long of Asc Node: 42.06582 +/- 0.003 Inclination: 4.00513 +/- 0.000 Eccentricity: 0.02347599 +/- 0.0002 Semi-Major Axis: 43.10657841 +/- 0.0033 Time of Perihelion: 2420168.2222 +/- 131.0 Perihelion: 42.09460870 +/- 0.0080 Aphelion: 44.11854812 +/- 0.0080 Period (y) 283.0242 +/- 0.03 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 42.10119812 +/- 0.0007 Ecliptic Y 11.72316916 +/- 0.0002 Ecliptic Z -1.36561562 +/- 0.0000 Ecliptic XDOT -0.00064024 +/- 0.0000 Ecliptic YDOT 0.00249705 +/- 0.0000 Ecliptic ZDOT 0.00015983 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 43.72422025 +/- 0.0007 Geocenter to KBO 43.31122197 +/- 0.0007 # Hcoef: 7.62
The following table shows the complete astrometric record for 13UT17. 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 (13UT17) followed by the observatory code and reference code for the source of the astrometry.
2013 08 02.52798 01 04 38.320 +04 55 29.85 24.1r 13UT17 568 C~2NKa 2013 08 02.57069 01 04 38.267 +04 55 29.40 24.1r 13UT17 568 C~2NKa 2013 08 30.44360 01 03 35.719 +04 48 25.09 23.6r 13UT17 568 C~2NKa 2013 10 06.40889 01 01 10.412 +04 33 19.49 24.0r 13UT17 568 C~2NKa 2013 10 06.49158 01 01 10.033 +04 33 17.09 24.0r 13UT17 568 C~2NKa 2013 10 06.49617 01 01 10.018 +04 33 17.13 24.0r 13UT17 568 C~2NKa 2013 10 31.25056 00 59 24.152 +04 22 51.95 24.0r 13UT17 568 C~2NKa 2013 10 31.29356 00 59 23.975 +04 22 51.20 23.9r 13UT17 568 C~2NKa 2013 10 31.33628 00 59 23.799 +04 22 50.21 23.8r 13UT17 568 C~2NKa 2013 11 01.27683 00 59 20.047 +04 22 28.48 23.8r 13UT17 568 C~2NKa 2013 11 01.40318 00 59 19.532 +04 22 25.58 23.9r 13UT17 568 C~2NKa 2013 11 05.45493 00 59 03.730 +04 20 55.71 24.0r 13UT17 568 C~2NKa 2013 11 29.31710 00 57 47.785 +04 14 05.39 24.0r 13UT17 568 C~2NKa 2013 12 04.26738 00 57 36.641 +04 13 11.23 24.0r 13UT17 568 C~2NKa 2013 12 04.31956 00 57 36.523 +04 13 10.77 23.9r 13UT17 568 C~2NKa 2014 06 27.59782 01 08 54.929 +05 28 00.36 24.0r 13UT17 568 C~2NKa 2014 06 28.60286 01 08 56.749 +05 28 09.71 24.2r 13UT17 568 C~2NKa 2014 07 24.54916 01 09 14.901 +05 29 16.30 24.2r 13UT17 568 C~2NKa 2014 07 27.57991 01 09 13.393 +05 29 01.96 23.7r 13UT17 568 C~2NKa 2014 08 28.42620 01 08 14.480 +05 22 16.94 23.7r 13UT17 568 C~2NKa 2014 10 23.36016 01 04 30.633 +04 59 29.68 23.7r 13UT17 568 C~2NKa 2014 10 27.39884 01 04 13.541 +04 57 50.41 23.9r 13UT17 568 C~2NKa 2014 11 24.24000 01 02 32.646 +04 48 28.71 24.2r 13UT17 568 C~2NKa 2014 11 25.23617 01 02 29.782 +04 48 13.83 23.9r 13UT17 568 C~2NKa 2015 01 17.29797 01 01 51.970 +04 47 13.53 24.6r 13UT17 568 C~2NKa 2017 07 24.60098 01 22 40.422 +07 06 07.26 13UT17 568 C~2NKa 2017 08 25.51775 01 21 56.431 +07 01 08.06 24.1w 13UT17 568 C~2NKa 2017 08 30.45989 01 21 42.906 +06 59 43.15 24.4w 13UT17 568 C~2NKa 2018 09 09.398450 01 25 44.97 +07 28 58.8 24.5r 13UT17 568 C~2rbS
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 -0.01 0.00 0.06
2 0.0001 0.00 0.03 0.00 -0.00
3 0.0764 0.00 0.00 0.00 -0.04
4 0.1776 0.00 0.08 0.00 0.11
5 0.1779 0.00 -0.07 0.00 -0.10
6 0.1779 0.00 0.01 0.00 0.06
7 0.2456 0.00 0.03 0.00 -0.11
8 0.2458 0.00 0.01 0.00 0.13
9 0.2459 0.00 -0.01 0.00 0.13
10 0.2485 0.00 0.03 0.00 -0.05
11 0.2488 0.00 -0.01 0.00 -0.08
12 0.2599 0.00 -0.08 0.00 -0.06
13 0.3252 0.00 -0.07 0.00 -0.04
14 0.3388 0.00 0.10 0.00 -0.07
15 0.3389 0.00 0.01 0.00 -0.02
16 0.9009 0.00 -0.06 0.00 0.10
17 0.9037 0.00 0.02 0.00 -0.01
18 0.9747 0.00 -0.04 0.00 -0.03
19 0.9830 0.00 0.17 0.00 0.03
20 1.0702 0.00 -0.08 0.00 -0.11
21 1.2234 0.00 -0.13 0.00 0.01
22 1.2344 0.00 -0.03 0.00 -0.01
23 1.3106 0.00 0.21 0.00 0.08
24 1.3134 0.00 -0.11 0.00 0.03
25 1.4586 0.00 0.04 0.00 0.00
26 3.9756 0.00 -0.00 0.00 0.04
27 4.0629 0.00 -0.04 0.00 0.09
28 4.0765 0.00 0.04 0.00 -0.04
29 5.1030 0.00 0.03 0.00 -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.
13UT17 quality flag:3 Type: CLASSICAL CLASSICAL CLASSICAL axisobj 43.331 43.331 43.331 ecceobj 0.023 0.023 0.023 incobj 3.999 3.999 3.999 qmin 41.393 41.393 41.396 qmax 44.915 44.911 44.916 amean 43.082 43.082 43.082 amin 42.751 42.753 42.752 amax 43.410 43.410 43.411 emean 0.018 0.018 0.018 emin 0.000 0.001 0.000 emax 0.035 0.035 0.035 imean 2.815 2.815 2.815 imin 1.955 1.956 1.956 imax 3.661 3.661 3.661 excite_mean 0.052 0.052 0.052 fracstop 1.000 1.000 1.000 cjmean 3.087 3.087 3.087 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 174.7 174.7 174.7 kozaiamp 180.0 180.0 180.0