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: 13UP44 # Created Sun Nov 24 02:09:45 2024 # Orbit generated from Bernstein formalism # Fitting 26 observations of 26 # Arc: 1.31y # First observation: 2013/08/02 # Last observation: 2014/11/25 Preliminary a, adot, b, bdot, g, gdot: -0.000165 0.026036 -0.000005 -0.000446 0.024972 0.000000 # Chi-squared of fit: 10.98 DOF: 46 RMS: 0.11 # Min/Max residuals: -0.28 0.29 # Exact a, adot, b, bdot, g, gdot: 1.730788E-05 2.590659E-02 -3.646105E-07 -4.438800E-04 2.491427E-02 2.323669E-03 # Covariance matrix: 3.3436E-13 1.4393E-13 9.0656E-15 -1.9814E-14 4.0164E-13 1.9396E-11 1.4393E-13 7.6777E-13 1.4681E-14 -3.8052E-14 6.1734E-13 3.8351E-11 9.0656E-15 1.4681E-14 1.3230E-13 -1.3621E-13 1.8956E-14 1.0460E-12 -1.9814E-14 -3.8052E-14 -1.3621E-13 2.4287E-13 -4.4092E-14 -2.7708E-12 4.0164E-13 6.1734E-13 1.8956E-14 -4.4092E-14 8.2508E-13 4.3653E-11 1.9396E-11 3.8351E-11 1.0460E-12 -2.7708E-12 4.3653E-11 2.8018E-09 # lat0 lon0 xBary yBary zBary JD0 -2.774096 17.524727 0.938756 -0.018873 -0.390128 2456507.036518 # Heliocentric elements and errors Epoch: 2456500.5000 = 2013/07/27 Mean Anomaly: 24.27239 +/- 0.576 Argument of Peri: 217.28297 +/- 0.803 Long of Asc Node: 127.10458 +/- 0.020 Inclination: 2.93974 +/- 0.000 Eccentricity: 0.13586173 +/- 0.0012 Semi-Major Axis: 46.06866488 +/- 0.0172 Time of Perihelion: 2448800.0371 +/- 182.6 Perihelion: 39.80969645 +/- 0.0593 Aphelion: 52.32763331 +/- 0.0607 Period (y) 312.6919 +/- 0.17 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 38.88474598 +/- 0.0014 Ecliptic Y 11.29757323 +/- 0.0004 Ecliptic Z -1.94256201 +/- 0.0001 Ecliptic XDOT -0.00062252 +/- 0.0000 Ecliptic YDOT 0.00279003 +/- 0.0000 Ecliptic ZDOT -0.00006094 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 40.53926711 +/- 0.0013 Geocenter to KBO 40.13763439 +/- 0.0015 # Hcoef: 8.53
The following table shows the complete astrometric record for 13UP44. 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 (13UP44) followed by the observatory code and reference code for the source of the astrometry.
2013 08 02.53574 01 08 52.731 +04 18 52.55 24.7r 13UP44 568 C~4n3v 2013 08 02.57845 01 08 52.689 +04 18 52.25 24.9r 13UP44 568 C~4n3v 2013 08 30.45291 01 07 50.759 +04 10 41.35 24.8r 13UP44 568 C~4n3v 2013 08 30.45765 01 07 50.753 +04 10 40.99 13UP44 568 C~4n3v 2013 08 31.45558 01 07 47.485 +04 10 17.97 24.8r 13UP44 568 C~4n3v 2013 08 31.52122 01 07 47.267 +04 10 16.31 24.2r 13UP44 568 C~4n3v 2013 10 06.41689 01 05 19.556 +03 53 55.55 24.3r 13UP44 568 C~4n3v 2013 10 09.54662 01 05 05.077 +03 52 24.93 13UP44 568 C~4n3v 2013 10 31.25836 01 03 27.236 +03 42 32.73 24.3r 13UP44 568 C~4n3v 2013 10 31.30131 01 03 27.054 +03 42 31.70 23.9r 13UP44 568 C~4n3v 2013 10 31.34404 01 03 26.861 +03 42 30.64 24.1r 13UP44 568 C~4n3v 2013 11 01.28510 01 03 22.880 +03 42 07.36 24.9r 13UP44 568 C~4n3v 2013 11 01.41360 01 03 22.322 +03 42 04.23 24.4r 13UP44 568 C~4n3v 2013 11 05.46270 01 03 05.573 +03 40 27.36 24.4r 13UP44 568 C~4n3v 2013 12 06.22106 01 01 28.816 +03 31 56.15 24.7r 13UP44 568 C~4n3v 2014 06 27.60559 01 14 02.312 +04 51 42.09 24.7r 13UP44 568 C~4n3v 2014 06 28.61065 01 14 04.499 +04 51 50.80 24.6r 13UP44 568 C~4n3v 2014 07 24.56867 01 14 30.274 +04 52 25.83 24.9r 13UP44 568 C~4n3v 2014 07 27.59948 01 14 29.344 +04 52 06.01 24.0r 13UP44 568 C~4n3v 2014 08 22.55650 01 13 49.440 +04 46 11.93 24.5r 13UP44 568 C~4n3v 2014 08 28.41844 01 13 33.105 +04 44 11.14 24.8r 13UP44 568 C~4n3v 2014 10 23.36404 01 09 39.967 +04 19 02.04 24.7r 13UP44 568 C~4n3v 2014 10 26.46093 01 09 26.004 +04 17 39.11 25.0r 13UP44 568 C~4n3v 2014 10 27.40273 01 09 21.827 +04 17 14.58 24.6r 13UP44 568 C~4n3v 2014 11 24.28276 01 07 34.209 +04 07 12.84 25.2r 13UP44 568 C~4n3v 2014 11 25.30908 01 07 31.083 +04 06 56.86 24.3r 13UP44 568 C~4n3v
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 -0.18 0.00 0.02
2 0.0001 -0.70 0.01 -0.04 0.13
3 0.0764 -1044.21 0.10 -101.46 0.14
4 0.0764 -1044.43 0.13 -101.76 -0.15
5 0.0792 -1098.41 0.04 -104.44 0.16
6 0.0794 -1102.06 0.05 -104.73 0.02
7 0.1776 -3519.53 0.16 -169.26 -0.04
8 0.1862 -3754.47 -0.09 -170.38 0.01
9 0.2456 -5334.82 -0.07 -158.78 -0.03
10 0.2458 -5337.73 -0.00 -158.69 -0.02
11 0.2459 -5340.81 -0.10 -158.57 0.03
12 0.2485 -5404.81 -0.05 -157.32 -0.01
13 0.2488 -5413.74 -0.11 -157.02 0.04
14 0.2599 -5682.64 -0.03 -150.78 -0.12
15 0.3441 -7218.04 0.17 -69.49 -0.11
16 0.9009 5030.99 -0.11 65.16 -0.11
17 0.9037 5064.56 -0.16 60.84 -0.13
18 0.9748 5434.61 0.09 -52.64 -0.08
19 0.9831 5414.22 -0.14 -65.72 -0.13
20 1.0541 4727.70 0.29 -167.59 -0.06
21 1.0702 4455.82 0.06 -186.87 0.06
22 1.2233 657.06 0.23 -259.90 0.08
23 1.2318 432.36 -0.28 -257.20 0.01
24 1.2344 365.25 -0.10 -256.13 0.14
25 1.3107 -1352.56 -0.04 -200.00 0.06
26 1.3135 -1401.90 0.12 -196.97 0.09
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.
13UP44 quality flag:3 Type: CLASSICAL CLASSICAL CLASSICAL axisobj 46.353 46.415 46.294 ecceobj 0.142 0.146 0.138 incobj 2.937 2.937 2.937 qmin 38.936 38.828 39.065 qmax 53.444 53.703 53.163 amean 46.001 46.085 45.966 amin 45.608 45.700 45.571 amax 46.439 46.532 46.390 emean 0.136 0.140 0.133 emin 0.122 0.126 0.119 emax 0.151 0.155 0.146 imean 1.974 1.961 1.957 imin 1.336 1.336 1.341 imax 2.560 2.580 2.564 excite_mean 0.140 0.145 0.138 fracstop 1.000 1.000 1.000 cjmean 3.102 3.101 3.102 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 176.6 177.6 177.8 kozaiamp 180.0 179.9 180.0