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: 15KT173
# Created Sun Dec 22 02:10:23 2024
# Orbit generated from Bernstein formalism
# Fitting 41 observations of 41
# Arc: 2.98y
# First observation: 2014/05/29
# Last observation: 2017/05/21
Preliminary a, adot, b, bdot, g, gdot:
-0.000354 0.037055 0.000014 -0.001558 0.030995 0.000000
# Chi-squared of fit: 11.85 DOF: 76 RMS: 0.10
# Min/Max residuals: -0.30 0.27
# Exact a, adot, b, bdot, g, gdot:
1.820070E-05 3.650258E-02 -7.042566E-07 -1.538351E-03 3.135760E-02 -7.042035E-03
# Covariance matrix:
1.6593E-13 -1.9299E-13 -2.5961E-15 5.5867E-15 -4.5581E-14 -1.2402E-12
-1.9299E-13 3.6578E-13 6.1093E-15 -1.3836E-14 9.5030E-14 3.0466E-12
-2.5961E-15 6.1093E-15 1.1611E-13 -7.0428E-14 4.0934E-15 6.4488E-14
5.5867E-15 -1.3836E-14 -7.0428E-14 6.1928E-14 -4.3981E-15 -1.3856E-13
-4.5581E-14 9.5030E-14 4.0934E-15 -4.3981E-15 1.5016E-13 1.1361E-12
-1.2402E-12 3.0466E-12 6.4488E-14 -1.3856E-13 1.1361E-12 3.0768E-11
# lat0 lon0 xBary yBary zBary JD0
6.392762 -128.935415 -0.293044 0.108207 -0.965293 2456806.863358
# Heliocentric elements and errors
Epoch: 2456800.5000 = 2014/05/23
Mean Anomaly: 324.00441 +/- 0.012
Argument of Peri: 169.19449 +/- 0.025
Long of Asc Node: 119.48293 +/- 0.003
Inclination: 6.69132 +/- 0.000
Eccentricity: 0.24458304 +/- 0.0001
Semi-Major Axis: 39.57271225 +/- 0.0037
Time of Perihelion: 2465892.0705 +/- 2.7
Perihelion: 29.89389792 +/- 0.0063
Aphelion: 49.25152658 +/- 0.0073
Period (y) 248.9442 +/- 0.04
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X -20.30044839 +/- 0.0002
Ecliptic Y -25.58996531 +/- 0.0003
Ecliptic Z 3.55079740 +/- 0.0000
Ecliptic XDOT 0.00284841 +/- 0.0000
Ecliptic YDOT -0.00154287 +/- 0.0000
Ecliptic ZDOT -0.00020181 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 32.85669934 +/- 0.0003
Geocenter to KBO 31.89019631 +/- 0.0004
# Hcoef: 9.28
The following table shows the complete astrometric record for 15KT173. 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 (15KT173) followed by the observatory code and reference code for the source of the astrometry.
2014 05 29.36258 15 21 23.331 -11 50 56.46 24.0r 15KT173 568 C~2lVG 2014 05 29.40143 15 21 23.107 -11 50 55.78 24.4r 15KT173 568 C~2lVG 2014 05 29.44026 15 21 22.887 -11 50 54.96 24.4r 15KT173 568 C~2lVG 2014 05 30.47018 15 21 17.063 -11 50 37.28 24.6r 15KT173 568 C~2lVG 2014 05 31.38647 15 21 11.906 -11 50 21.79 23.9r 15KT173 568 C~2lVG 2014 06 21.36572 15 19 25.954 -11 45 51.76 24.9r 15KT173 568 C~2lVG 2014 06 21.40460 15 19 25.771 -11 45 51.43 24.5r 15KT173 568 C~2lVG 2014 07 19.28215 15 17 58.708 -11 45 03.44 24.7r 15KT173 568 C~2lVG 2015 02 23.64434 15 35 57.597 -12 58 47.34 24.4r 15KT173 568 C~2lVG 2015 03 19.58718 15 35 31.918 -12 53 08.23 24.5r 15KT173 568 C~2lVG 2015 03 21.64578 15 35 26.582 -12 52 30.53 24.3r 15KT173 568 C~2lVG 2015 04 12.50451 15 34 04.341 -12 44 50.68 24.3r 15KT173 568 C~2lVG 2015 04 12.54547 15 34 04.134 -12 44 49.88 24.2r 15KT173 568 C~2lVG 2015 04 18.52716 15 33 34.756 -12 42 33.02 24.2r 15KT173 568 C~2lVH 2015 05 17.40013 15 30 50.316 -12 31 47.28 24.5r 15KT173 568 C~2lVH 2015 05 17.44183 15 30 50.060 -12 31 46.50 23.7r 15KT173 568 C~2lVH 2015 05 17.49383 15 30 49.742 -12 31 45.44 24.0r 15KT173 568 C~2lVH 2015 05 24.38557 15 30 08.727 -12 29 29.80 24.0r 15KT173 568 C~2lVH 2015 05 24.43166 15 30 08.451 -12 29 28.93 24.0r 15KT173 568 C~2lVH 2015 05 24.47270 15 30 08.198 -12 29 28.21 24.4r 15KT173 568 C~2lVH 2015 05 26.46061 15 29 56.497 -12 28 51.47 24.1r 15KT173 568 C~2lVH 2015 06 18.35975 15 27 52.342 -12 23 21.44 24.4r 15KT173 568 C~2lVH 2015 06 18.40072 15 27 52.138 -12 23 20.94 24.5r 15KT173 568 C~2lVH 2015 06 21.37538 15 27 38.169 -12 22 52.77 24.3r 15KT173 568 C~2lVH 2015 06 21.39181 15 27 38.089 -12 22 52.59 24.6r 15KT173 568 C~2lVH 2015 07 10.41105 15 26 25.934 -12 21 27.59 24.6r 15KT173 568 C~2lVH 2015 07 18.33583 15 26 06.054 -12 21 43.00 24.4r 15KT173 568 C~2lVH 2015 08 11.33392 15 25 48.783 -12 25 35.48 24.4r 15KT173 568 C~2lVH 2016 02 06.62103 15 43 41.959 -13 35 10.68 24.6w 15KT173 568 C~2lVH 2016 02 12.60657 15 43 56.754 -13 34 56.56 25.1w 15KT173 568 C~2lVH 2016 03 15.60417 15 43 59.213 -13 29 28.27 25.4w 15KT173 568 C~2lVH 2016 03 15.61316 15 43 59.206 -13 29 28.17 24.6w 15KT173 568 C~2lVH 2016 04 08.59215 15 42 42.956 -13 21 53.62 24.9w 15KT173 568 C~2lVH 2016 04 29.47374 15 40 57.159 -13 14 16.65 24.7w 15KT173 568 C~2lVH 2016 05 04.40882 15 40 28.798 -13 12 28.92 24.5w 15KT173 568 C~2lVH 2016 05 30.48224 15 37 53.093 -13 04 01.08 15KT173 568 C~2lVH 2016 07 04.28603 15 35 01.050 -12 58 05.54 23.7w 15KT173 568 C~2lVH 2016 07 05.35431 15 34 57.182 -12 58 02.62 24.8w 15KT173 568 C~2lVH 2016 07 05.37863 15 34 57.084 -12 58 02.29 25.5w 15KT173 568 C~2lVH 2017 03 30.57261 15 51 51.078 -14 00 06.60 24.9w 15KT173 568 C~2lVH 2017 05 21.53337 15 47 22.622 -13 42 39.59 24.4w 15KT173 568 C~2lVH
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 0.04 0.00 -0.01
2 0.0001 -3.35 0.05 -0.18 -0.01
3 0.0002 -6.69 0.07 -0.21 0.13
4 0.0030 -93.86 0.04 -4.96 -0.09
5 0.0055 -171.02 -0.28 -9.34 -0.30
6 0.0630 -1743.98 0.09 -147.13 -0.03
7 0.0631 -1746.66 -0.04 -147.51 -0.07
8 0.1394 -2994.55 0.08 -430.70 0.02
9 0.7400 13436.25 0.13 -755.98 -0.00
10 0.8055 12987.97 -0.08 -517.45 0.10
11 0.8112 12902.79 0.01 -499.77 -0.16
12 0.8710 11619.61 -0.04 -346.13 0.27
13 0.8711 11616.47 -0.15 -346.09 0.11
14 0.8875 11164.84 -0.03 -318.30 0.04
15 0.9666 8667.16 0.12 -283.72 0.04
16 0.9667 8663.33 0.11 -283.89 -0.04
17 0.9668 8658.55 0.09 -284.01 -0.05
18 0.9857 8042.03 0.02 -301.12 0.10
19 0.9858 8037.90 0.04 -301.28 0.11
20 0.9859 8034.12 -0.03 -301.50 0.03
21 0.9914 7858.74 -0.07 -308.35 -0.01
22 1.0541 6013.07 0.03 -441.09 -0.10
23 1.0542 6010.05 -0.03 -441.36 -0.03
24 1.0623 5804.68 0.01 -465.20 0.09
25 1.0624 5803.50 -0.04 -465.32 0.11
26 1.1144 4758.01 0.02 -647.80 0.06
27 1.1361 4479.79 -0.18 -735.88 -0.06
28 1.2018 4293.25 -0.11 -1024.56 0.03
29 1.6927 20589.55 0.06 -1263.19 -0.05
30 1.7091 20798.01 0.03 -1198.61 -0.06
31 1.7967 20755.40 -0.20 -869.39 0.03
32 1.7967 20755.28 -0.03 -869.31 0.02
33 1.8624 19555.72 0.00 -687.94 0.00
34 1.9195 17933.76 0.12 -608.76 0.01
35 1.9330 17502.73 0.13 -602.47 0.12
36 2.0044 15158.20 -0.04 -653.16 -0.05
37 2.0997 12621.02 0.08 -916.18 -0.13
38 2.1026 12565.26 0.11 -927.10 -0.17
39 2.1027 12563.78 -0.08 -927.13 0.06
40 2.8370 27969.26 -0.02 -1076.85 0.03
41 2.9792 23859.69 -0.03 -949.92 -0.08
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.
15KT173 quality flag:3 Type: 3:2E 3:2E 3:2E axisobj 39.360 39.368 39.352 ecceobj 0.245 0.245 0.244 incobj 6.688 6.688 6.688 qmin 28.978 29.105 29.009 qmax 50.623 50.573 50.593 amean 39.456 39.456 39.456 amin 38.944 38.921 38.946 amax 40.067 40.091 40.036 emean 0.247 0.246 0.247 emin 0.231 0.230 0.231 emax 0.266 0.263 0.265 imean 4.924 5.183 4.930 imin 4.086 4.831 3.830 imax 5.831 5.554 5.716 excite_mean 0.262 0.262 0.262 fracstop 1.000 1.000 1.000 cjmean 2.973 2.973 2.973 libcent 0 180.0 181.5 180.0 libamp 0 107.3 120.7 104.1 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 220.0 161.1 216.8 kozaiamp 179.9 180.0 180.0