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: 15KN173
# Created Fri Nov 22 02:10:22 2024
# Orbit generated from Bernstein formalism
# Fitting 36 observations of 36
# Arc: 3.24y
# First observation: 2014/05/29
# Last observation: 2017/08/24
Preliminary a, adot, b, bdot, g, gdot:
0.000009 0.038631 -0.000014 -0.004006 0.032056 0.000000
# Chi-squared of fit: 5.38 DOF: 66 RMS: 0.07
# Min/Max residuals: -0.17 0.21
# Exact a, adot, b, bdot, g, gdot:
1.944073E-05 3.891499E-02 -1.713564E-06 -4.054322E-03 3.225545E-02 -1.330273E-03
# Covariance matrix:
2.2011E-13 -2.4542E-13 -1.0010E-14 1.9722E-14 -8.7206E-14 -1.4890E-12
-2.4542E-13 4.3473E-13 2.0921E-14 -4.2580E-14 1.2081E-13 3.1552E-12
-1.0010E-14 2.0921E-14 1.2666E-13 -6.4100E-14 7.0450E-15 1.6953E-13
1.9722E-14 -4.2580E-14 -6.4100E-14 4.9976E-14 -1.1878E-14 -3.4492E-13
-8.7206E-14 1.2081E-13 7.0450E-15 -1.1878E-14 1.5163E-13 9.8444E-13
-1.4890E-12 3.1552E-12 1.6953E-13 -3.4492E-13 9.8444E-13 2.5564E-11
# lat0 lon0 xBary yBary zBary JD0
5.445104 -127.624192 -0.270481 0.092847 -0.973440 2456806.847808
# Heliocentric elements and errors
Epoch: 2456800.5000 = 2014/05/23
Mean Anomaly: 354.43036 +/- 0.030
Argument of Peri: 146.90742 +/- 0.046
Long of Asc Node: 94.01992 +/- 0.001
Inclination: 7.99076 +/- 0.000
Eccentricity: 0.19307933 +/- 0.0000
Semi-Major Axis: 39.56038629 +/- 0.0023
Time of Perihelion: 2458206.5932 +/- 7.7
Perihelion: 31.92209357 +/- 0.0024
Aphelion: 47.19867901 +/- 0.0032
Period (y) 248.8279 +/- 0.02
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X -19.22508042 +/- 0.0002
Ecliptic Y -25.38233953 +/- 0.0003
Ecliptic Z 2.94189316 +/- 0.0000
Ecliptic XDOT 0.00265960 +/- 0.0000
Ecliptic YDOT -0.00195696 +/- 0.0000
Ecliptic ZDOT -0.00035317 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 31.97689185 +/- 0.0003
Geocenter to KBO 31.00250837 +/- 0.0004
# Hcoef: 8.32
The following table shows the complete astrometric record for 15KN173. 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 (15KN173) followed by the observatory code and reference code for the source of the astrometry.
2014 05 29.34703 15 25 34.750 -13 05 42.54 23.4r 15KN173 568 C~2lVF 2014 05 29.38590 15 25 34.521 -13 05 41.91 23.4r 15KN173 568 C~2lVF 2014 05 29.42474 15 25 34.293 -13 05 41.18 23.4r 15KN173 568 C~2lVF 2014 05 30.44923 15 25 28.302 -13 05 24.27 22.3r 15KN173 568 C~2lVF 2014 05 30.45456 15 25 28.264 -13 05 23.84 22.1r 15KN173 568 C~2lVF 2014 05 31.37090 15 25 22.938 -13 05 08.76 23.7r 15KN173 568 C~2lVF 2015 02 20.65667 15 40 34.200 -14 19 05.57 23.4r 15KN173 568 C~2lVF 2015 03 19.57074 15 40 13.805 -14 14 37.18 23.5r 15KN173 568 C~2lVF 2015 03 21.62951 15 40 08.615 -14 14 06.28 23.4r 15KN173 568 C~2lVF 2015 04 12.48811 15 38 46.660 -14 07 34.50 23.5r 15KN173 568 C~2lVF 2015 04 12.52910 15 38 46.455 -14 07 33.57 23.5r 15KN173 568 C~2lVF 2015 05 17.38343 15 35 29.004 -13 55 43.01 23.5r 15KN173 568 C~2lVG 2015 05 17.42514 15 35 28.737 -13 55 42.32 23.3r 15KN173 568 C~2lVG 2015 05 17.46733 15 35 28.492 -13 55 41.51 22.8r 15KN173 568 C~2lVG 2015 05 24.36911 15 34 46.243 -13 53 33.94 23.3r 15KN173 568 C~2lVG 2015 05 24.41533 15 34 45.956 -13 53 33.11 23.5r 15KN173 568 C~2lVG 2015 05 24.45620 15 34 45.702 -13 53 32.39 23.4r 15KN173 568 C~2lVG 2015 05 26.44379 15 34 33.653 -13 52 57.60 23.2r 15KN173 568 C~2lVG 2015 06 21.35896 15 32 10.315 -13 47 10.15 23.3r 15KN173 568 C~2lVG 2015 07 17.34619 15 30 35.495 -13 45 46.02 23.7r 15KN173 568 C~2lVG 2015 07 18.31678 15 30 33.257 -13 45 48.79 23.4r 15KN173 568 C~2lVG 2016 02 06.64126 15 48 35.340 -15 02 20.61 23.8w 15KN173 568 C~2lVG 2016 02 12.62680 15 48 51.455 -15 02 29.55 23.8w 15KN173 568 C~2lVG 2016 03 15.64024 15 48 59.099 -14 59 07.15 23.7w 15KN173 568 C~2lVG 2016 04 03.56687 15 48 04.869 -14 54 27.00 23.6w 15KN173 568 C~2lVG 2016 04 08.61643 15 47 44.142 -14 52 58.51 23.6w 15KN173 568 C~2lVG 2016 04 09.56037 15 47 40.019 -14 52 41.45 23.7w 15KN173 568 C~2lVG 2016 05 30.47415 15 42 49.792 -14 36 57.63 23.5w 15KN173 568 C~2lVG 2016 07 04.29413 15 39 51.346 -14 31 06.04 23.6w 15KN173 568 C~2lVG 2016 07 05.36242 15 39 47.279 -14 31 02.39 23.5w 15KN173 568 C~2lVG 2017 04 03.61140 15 56 51.933 -15 37 30.64 23.7w 15KN173 568 C~2lVG 2017 04 03.61609 15 56 51.909 -15 37 30.54 23.7w 15KN173 568 C~2lVG 2017 04 04.49990 15 56 48.651 -15 37 16.94 23.6w 15KN173 568 C~2lVG 2017 05 21.53807 15 52 35.947 -15 23 33.52 23.3w 15KN173 568 C~2lVG 2017 08 20.28063 15 47 23.215 -15 19 43.62 23.5w 15KN173 568 C~2lVG 2017 08 24.25065 15 47 29.192 -15 20 47.79 23.9w 15KN173 568 C~2lVG
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 -0.06
2 0.0001 -3.40 -0.02 -0.22 -0.07
3 0.0002 -6.80 0.02 -0.35 0.02
4 0.0030 -95.79 0.16 -5.80 -0.17
5 0.0030 -96.43 -0.02 -5.52 0.14
6 0.0055 -175.55 -0.11 -10.33 0.16
7 0.7319 13803.64 -0.00 -1102.99 0.04
8 0.8055 13450.93 -0.15 -911.11 0.03
9 0.8112 13369.99 -0.01 -898.75 -0.01
10 0.8710 12114.59 0.07 -798.27 -0.06
11 0.8711 12111.46 -0.04 -798.07 0.03
12 0.9666 9143.54 0.00 -791.05 0.04
13 0.9667 9139.59 -0.06 -791.31 -0.09
14 0.9668 9135.93 0.21 -791.38 -0.02
15 0.9857 8506.99 -0.00 -815.07 0.00
16 0.9858 8502.72 -0.02 -815.27 0.01
17 0.9859 8498.95 -0.02 -815.46 0.00
18 0.9914 8319.98 -0.03 -823.85 -0.01
19 1.0623 6207.56 0.00 -991.13 0.02
20 1.1335 4846.30 0.10 -1246.07 -0.05
21 1.1361 4815.34 -0.01 -1256.73 -0.01
22 1.6928 21249.44 0.14 -2028.78 -0.10
23 1.7092 21481.34 -0.05 -1984.73 -0.03
24 1.7968 21544.22 -0.02 -1761.39 0.10
25 1.8487 20706.57 0.01 -1665.02 -0.02
26 1.8625 20390.76 -0.03 -1646.64 -0.04
27 1.8651 20328.07 -0.04 -1643.53 0.00
28 2.0045 15980.13 -0.06 -1688.65 0.01
29 2.0998 13365.75 0.05 -1951.17 0.03
30 2.1027 13307.25 0.02 -1961.50 0.07
31 2.8481 28833.54 0.06 -2507.60 0.07
32 2.8481 28833.18 -0.04 -2507.58 0.07
33 2.8505 28783.33 0.02 -2504.41 -0.05
34 2.9793 24975.14 0.09 -2496.93 -0.04
35 3.2277 20460.96 -0.12 -3286.93 -0.06
36 3.2386 20560.73 -0.03 -3330.15 -0.00
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.
15KN173 quality flag:3 Type: 3:2E 3:2E 3:2E axisobj 39.306 39.313 39.298 ecceobj 0.189 0.189 0.189 incobj 7.987 7.987 7.987 qmin 31.163 31.176 31.177 qmax 48.409 48.408 48.371 amean 39.456 39.456 39.456 amin 39.003 38.976 38.988 amax 39.994 39.974 39.992 emean 0.193 0.193 0.192 emin 0.174 0.174 0.173 emax 0.211 0.211 0.211 imean 6.491 6.474 6.512 imin 5.915 5.895 5.939 imax 7.190 7.137 7.239 excite_mean 0.223 0.223 0.223 fracstop 1.000 1.000 1.000 cjmean 2.995 2.995 2.995 libcent 0 179.8 180.0 180.1 libamp 0 93.8 96.4 91.5 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 185.5 178.7 187.2 kozaiamp 180.0 180.0 180.0