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: 13UM17
# Created Wed Dec 25 02:09:43 2024
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting 54 observations of 54
# Arc: 12.99y
# First observation: 2004/09/21
# Last observation: 2017/09/18
# Chi-squared of fit: 36.44 DOF: 102 RMS: 0.15
# Min/Max residuals: -0.38 0.61
# Exact a, adot, b, bdot, g, gdot:
1.607327E-05 2.446010E-02 -2.936519E-06 -5.638145E-03 2.510130E-02 1.775752E-03
# Covariance matrix:
4.8409E-13 -8.8182E-14 -1.6060E-14 1.0631E-14 -4.2381E-14 -1.5894E-13
-8.8182E-14 3.7228E-14 1.1186E-14 -7.4382E-15 4.2374E-14 1.1100E-13
-1.6060E-14 1.1186E-14 4.1856E-13 -4.4478E-14 1.3481E-14 3.8101E-14
1.0631E-14 -7.4382E-15 -4.4478E-14 6.2418E-15 -9.1798E-15 -2.5312E-14
-4.2381E-14 4.2374E-14 1.3481E-14 -9.1798E-15 1.3419E-13 1.3568E-13
-1.5894E-13 1.1100E-13 3.8101E-14 -2.5312E-14 1.3568E-13 3.7789E-13
# lat0 lon0 xBary yBary zBary JD0
0.603838 3.106764 0.078556 0.010669 -1.004946 2453269.908363
# Heliocentric elements and errors
Epoch: 2453270.5000 = 2004/09/22
Mean Anomaly: 59.29440 +/- 0.023
Argument of Peri: 110.20467 +/- 0.028
Long of Asc Node: 185.54692 +/- 0.000
Inclination: 13.01979 +/- 0.000
Eccentricity: 0.07640969 +/- 0.0000
Semi-Major Axis: 42.29666406 +/- 0.0022
Time of Perihelion: 2436721.6138 +/- 6.5
Perihelion: 39.06478898 +/- 0.0022
Aphelion: 45.52853914 +/- 0.0025
Period (y) 275.0853 +/- 0.02
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X 40.78138935 +/- 0.0006
Ecliptic Y 2.13669496 +/- 0.0000
Ecliptic Z 0.41974947 +/- 0.0000
Ecliptic XDOT 0.00005363 +/- 0.0000
Ecliptic YDOT 0.00266777 +/- 0.0000
Ecliptic ZDOT -0.00061279 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 40.83944016 +/- 0.0006
Geocenter to KBO 39.83857649 +/- 0.0006
# Hcoef: 7.49
The following table shows the complete astrometric record for 13UM17. 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 (13UM17) followed by the observatory code and reference code for the source of the astrometry.
2004 09 21.40762 00 10 26.60 +01 47 21.9 23.4r 13UM17 568 C~2NKZ 2004 09 21.43876 00 10 26.45 +01 47 21.0 23.5r 13UM17 568 C~2NKZ 2004 09 21.46760 00 10 26.35 +01 47 20.0 23.8r 13UM17 568 C~2NKZ 2004 09 22.41259 00 10 22.08 +01 46 49.9 23.2r 13UM17 568 C~2NKZ 2013 08 02.51631 01 03 07.488 +04 22 09.95 23.9r 13UM17 568 C~2NKZ 2013 08 02.55904 01 03 07.429 +04 22 09.23 23.6r 13UM17 568 C~2NKZ 2013 08 30.43177 01 02 03.856 +04 12 46.77 23.6r 13UM17 568 C~2NKZ 2013 08 31.43593 01 02 00.592 +04 12 20.92 23.5r 13UM17 568 C~2NKZ 2013 08 31.47896 01 02 00.443 +04 12 19.80 23.7r 13UM17 568 C~2NKZ 2013 09 04.41593 01 01 46.995 +04 10 35.12 23.9r 13UM17 568 C~2NKZ 2013 09 04.45871 01 01 46.840 +04 10 33.93 23.6r 13UM17 568 C~2NKZ 2013 10 06.39713 00 59 34.480 +03 54 30.56 23.5r 13UM17 568 C~2NKZ 2013 10 06.47088 00 59 34.156 +03 54 28.28 24.1r 13UM17 568 C~2NKZ 2013 10 06.47992 00 59 34.095 +03 54 27.99 23.6r 13UM17 568 C~2NKZ 2013 10 09.52057 00 59 20.365 +03 52 52.67 23.7r 13UM17 568 C~2NKZ 2013 10 31.23884 00 57 45.553 +03 42 06.78 23.7r 13UM17 568 C~2NKZ 2013 10 31.28183 00 57 45.374 +03 42 05.65 23.7r 13UM17 568 C~2NKZ 2013 10 31.32461 00 57 45.195 +03 42 04.43 23.5r 13UM17 568 C~2NKZ 2013 11 01.26510 00 57 41.372 +03 41 38.86 23.6r 13UM17 568 C~2NKZ 2013 11 01.38800 00 57 40.851 +03 41 35.66 23.7r 13UM17 568 C~2NKZ 2013 11 05.42210 00 57 24.829 +03 39 49.01 23.8r 13UM17 568 C~2NKZ 2013 11 29.22781 00 56 08.335 +03 31 30.92 23.7r 13UM17 568 C~2NKZ 2013 11 29.23325 00 56 08.340 +03 31 30.86 24.0r 13UM17 568 C~2NKZ 2013 11 29.23812 00 56 08.310 +03 31 30.77 23.8r 13UM17 568 C~2NKZ 2013 11 29.27951 00 56 08.221 +03 31 30.43 23.4r 13UM17 568 C~2NKZ 2013 11 29.28398 00 56 08.199 +03 31 29.71 24.2r 13UM17 568 C~2NKZ 2013 11 29.30546 00 56 08.138 +03 31 29.81 23.7r 13UM17 568 C~2NKZ 2013 12 04.25494 00 55 57.122 +03 30 20.13 23.7r 13UM17 568 C~2NKZ 2013 12 04.30703 00 55 57.014 +03 30 19.19 23.7r 13UM17 568 C~2NKZ 2013 12 05.25309 00 55 55.147 +03 30 07.43 23.6r 13UM17 568 C~2NKZ 2014 07 27.57602 01 08 37.319 +04 37 12.65 23.9r 13UM17 568 C~2NKZ 2014 08 22.55261 01 07 55.088 +04 29 59.82 23.8r 13UM17 568 C~2NKZ 2014 08 28.41447 01 07 38.546 +04 27 42.04 23.6r 13UM17 568 C~2NKZ 2014 10 23.36792 01 03 49.083 +04 00 08.53 23.4r 13UM17 568 C~2NKZ 2014 10 25.28038 01 03 40.755 +03 59 12.85 23.9r 13UM17 568 C~2NKZ 2014 10 25.30740 01 03 40.653 +03 59 12.15 24.8u 13UM17 568 C~2NKZ 2014 10 25.31593 01 03 40.602 +03 59 12.22 24.7u 13UM17 568 C~2NKZ 2014 10 25.33867 01 03 40.493 +03 59 11.35 23.2r 13UM17 568 C~2NKZ 2014 10 27.31342 01 03 31.987 +03 58 14.40 24.1r 13UM17 568 C~2NKZ 2014 10 27.35865 01 03 31.788 +03 58 13.20 24.7u 13UM17 568 C~2NKZ 2014 10 27.36433 01 03 31.770 +03 58 12.95 23.8r 13UM17 568 C~2NKZ 2014 10 27.40661 01 03 31.589 +03 58 11.78 23.8r 13UM17 568 C~2NKZ 2014 10 29.19941 01 03 23.947 +03 57 21.41 23.9g 13UM17 W84 C~4yRJ 2014 11 13.07497 01 02 25.377 +03 50 58.75 23.1r 13UM17 W84 C~4yRJ 2014 11 14.07758 01 02 21.800 +03 50 35.77 23.4r 13UM17 W84 C~4yRJ 2014 11 17.06685 01 02 11.466 +03 49 29.76 22.9z 13UM17 W84 C~4yRJ 2014 11 24.23611 01 01 48.939 +03 47 06.94 24.0r 13UM17 568 C~2NKZ 2014 11 25.23226 01 01 46.082 +03 46 49.05 23.9r 13UM17 568 C~2NKZ 2014 12 17.26663 01 01 02.274 +03 42 25.35 24.0r 13UM17 568 C~2NKZ 2015 01 18.22018 01 01 14.833 +03 44 14.66 24.1r 13UM17 568 C~2NKZ 2016 10 29.16012 01 14 16.186 +04 24 50.74 24.0r 13UM17 W84 C~4yRJ 2017 08 22.39609 01 24 07.314 +05 10 21.77 23.7r 13UM17 W84 C~4yRJ 2017 08 27.37623 01 23 54.840 +05 08 31.09 24.4g 13UM17 W84 C~4yRJ 2017 09 18.27755 01 22 41.462 +04 58 51.74 24.7g 13UM17 W84 C~4yRJ
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 -0.17
2 0.0001 0.00 -0.19 0.00 -0.06
3 0.0002 0.00 0.30 0.00 -0.12
4 0.0028 0.00 -0.07 0.00 0.61
5 8.8627 0.00 0.11 0.00 -0.05
6 8.8628 0.00 0.05 0.00 -0.17
7 8.9391 0.00 -0.23 0.00 -0.14
8 8.9419 0.00 0.10 0.00 -0.07
9 8.9420 0.00 0.05 0.00 -0.07
10 8.9528 0.00 0.08 0.00 -0.02
11 8.9529 0.00 0.06 0.00 -0.05
12 9.0404 0.00 0.08 0.00 -0.09
13 9.0406 0.00 0.30 0.00 -0.05
14 9.0406 0.00 0.00 0.00 -0.06
15 9.0489 0.00 -0.36 0.00 0.01
16 9.1084 0.00 -0.03 0.00 -0.09
17 9.1085 0.00 -0.03 0.00 -0.05
18 9.1086 0.00 -0.03 0.00 -0.10
19 9.1112 0.00 0.09 0.00 -0.06
20 9.1115 0.00 -0.09 0.00 0.06
21 9.1226 0.00 0.06 0.00 -0.03
22 9.1877 0.00 0.03 0.00 -0.03
23 9.1877 0.00 0.31 0.00 -0.01
24 9.1878 0.00 0.05 0.00 -0.02
25 9.1879 0.00 0.27 0.00 0.27
26 9.1879 0.00 0.10 0.00 -0.38
27 9.1879 0.00 -0.01 0.00 0.05
28 9.2015 0.00 -0.14 0.00 0.01
29 9.2016 0.00 -0.11 0.00 -0.26
30 9.2042 0.00 -0.02 0.00 -0.24
31 9.8458 0.00 -0.04 0.00 0.01
32 9.9169 0.00 0.06 0.00 0.12
33 9.9329 0.00 -0.07 0.00 -0.03
34 10.0861 0.00 -0.13 0.00 -0.09
35 10.0914 0.00 -0.07 0.00 0.02
36 10.0914 0.00 0.18 0.00 0.10
37 10.0915 0.00 -0.02 0.00 0.42
38 10.0915 0.00 -0.15 0.00 0.21
39 10.0969 0.00 -0.07 0.00 -0.02
40 10.0971 0.00 -0.10 0.00 0.07
41 10.0971 0.00 0.01 0.00 -0.02
42 10.0972 0.00 0.06 0.00 0.01
43 10.1021 0.00 -0.11 0.00 0.10
44 10.1428 0.00 -0.14 0.00 0.04
45 10.1456 0.00 -0.14 0.00 0.03
46 10.1538 0.00 -0.22 0.00 0.08
47 10.1734 0.00 -0.00 0.00 -0.06
48 10.1761 0.00 0.08 0.00 -0.05
49 10.2364 0.00 0.32 0.00 0.10
50 10.3239 0.00 -0.03 0.00 0.01
51 12.1034 0.00 -0.09 0.00 0.08
52 12.9171 0.00 -0.00 0.00 0.08
53 12.9308 0.00 -0.06 0.00 0.17
54 12.9907 0.00 0.19 0.00 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.
13UM17 quality flag:3 Type: CLASSICAL CLASSICAL CLASSICAL axisobj 42.773 42.773 42.773 ecceobj 0.081 0.081 0.081 incobj 12.951 12.951 12.951 qmin 38.447 38.493 38.495 qmax 46.898 46.848 46.815 amean 42.519 42.519 42.519 amin 42.167 42.184 42.178 amax 42.894 42.884 42.878 emean 0.074 0.074 0.074 emin 0.056 0.056 0.055 emax 0.093 0.093 0.092 imean 13.417 13.416 13.417 imin 12.714 12.714 12.714 imax 14.146 14.145 14.140 excite_mean 0.244 0.244 0.244 fracstop 1.000 1.000 1.000 cjmean 3.014 3.014 3.014 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 178.9 178.8 179.1 kozaiamp 179.9 180.0 180.0