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: 15KT174
# Created Sun Nov 24 02:10:20 2024
# Orbit generated from Bernstein formalism
# Fitting 34 observations of 34
# Arc: 3.24y
# First observation: 2014/05/30
# Last observation: 2017/08/26
Preliminary a, adot, b, bdot, g, gdot:
0.000374 0.021404 0.000193 0.010744 0.023628 0.000000
# Chi-squared of fit: 15.72 DOF: 62 RMS: 0.12
# Min/Max residuals: -0.31 0.29
# Exact a, adot, b, bdot, g, gdot:
1.493957E-05 2.209014E-02 6.871231E-06 1.109159E-02 2.404912E-02 5.066352E-03
# Covariance matrix:
2.8800E-13 -3.1283E-13 5.9874E-14 -1.1557E-13 -1.3981E-13 -3.4532E-12
-3.1283E-13 5.0478E-13 -1.1680E-13 2.2373E-13 2.0018E-13 6.7659E-12
5.9874E-14 -1.1680E-13 1.8480E-13 -1.3992E-13 -4.9955E-14 -1.7818E-12
-1.1557E-13 2.2373E-13 -1.3992E-13 1.7258E-13 9.8041E-14 3.4084E-12
-1.3981E-13 2.0018E-13 -4.9955E-14 9.8041E-14 1.8555E-13 2.8528E-12
-3.4532E-12 6.7659E-12 -1.7818E-12 3.4084E-12 2.8528E-12 1.0330E-10
# lat0 lon0 xBary yBary zBary JD0
6.884828 -127.190159 -0.280118 0.116973 -0.968317 2456807.886218
# Heliocentric elements and errors
Epoch: 2456800.5000 = 2014/05/23
Mean Anomaly: 35.94134 +/- 0.018
Argument of Peri: 313.97558 +/- 0.044
Long of Asc Node: 220.06860 +/- 0.000
Inclination: 27.46307 +/- 0.001
Eccentricity: 0.27586786 +/- 0.0004
Semi-Major Axis: 52.26549706 +/- 0.0141
Time of Perihelion: 2443021.6566 +/- 4.2
Perihelion: 37.84712612 +/- 0.0242
Aphelion: 66.68386800 +/- 0.0284
Period (y) 377.8599 +/- 0.15
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X -25.32097349 +/- 0.0004
Ecliptic Y -33.83125977 +/- 0.0006
Ecliptic Z 4.98488905 +/- 0.0001
Ecliptic XDOT 0.00174352 +/- 0.0000
Ecliptic YDOT -0.00185934 +/- 0.0000
Ecliptic ZDOT 0.00132287 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 42.55061639 +/- 0.0005
Geocenter to KBO 41.58155750 +/- 0.0007
# Hcoef: 8.74
The following table shows the complete astrometric record for 15KT174. 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 (15KT174) followed by the observatory code and reference code for the source of the astrometry.
2014 05 30.38544 15 28 45.081 -11 48 25.17 25.4r 15KT174 568 C~2lVK 2014 06 01.31224 15 28 36.513 -11 47 46.55 25.0r 15KT174 568 C~2lVK 2014 06 01.35552 15 28 36.305 -11 47 45.77 24.3r 15KT174 568 C~2lVK 2014 06 01.39843 15 28 36.139 -11 47 44.64 25.8r 15KT174 568 C~2lVK 2015 02 25.61255 15 39 21.982 -12 05 58.60 24.6r 15KT174 568 C~2lVK 2015 03 19.61637 15 39 00.863 -11 58 44.60 24.5r 15KT174 568 C~2lVK 2015 03 22.53501 15 38 54.860 -11 57 38.25 24.8r 15KT174 568 C~2lVK 2015 04 13.54773 15 37 49.126 -11 48 40.58 25.6r 15KT174 568 C~2lVK 2015 04 13.58882 15 37 48.961 -11 48 39.51 25.0r 15KT174 568 C~2lVK 2015 04 18.55227 15 37 29.977 -11 46 33.41 26.1r 15KT174 568 C~2lVK 2015 05 21.31829 15 35 04.642 -11 33 16.09 24.4r 15KT174 568 C~2lVK 2015 05 21.35947 15 35 04.426 -11 33 15.07 24.6r 15KT174 568 C~2lVK 2015 05 21.40058 15 35 04.237 -11 33 14.30 25.1r 15KT174 568 C~2lVK 2015 05 22.47722 15 34 59.249 -11 32 50.71 25.1r 15KT174 568 C~2lVK 2015 05 25.46768 15 34 45.485 -11 31 46.56 24.5r 15KT174 568 C~2lVK 2015 06 20.35717 15 32 55.921 -11 24 13.24 24.9r 15KT174 568 C~2lVK 2015 06 20.39803 15 32 55.770 -11 24 12.99 25.5r 15KT174 568 C~2lVK 2015 06 23.41822 15 32 44.819 -11 23 33.86 25.3r 15KT174 568 C~2lVK 2015 07 11.29135 15 31 51.601 -11 20 50.38 24.7r 15KT174 568 C~2lVK 2015 07 18.36074 15 31 36.882 -11 20 19.03 25.5r 15KT174 568 C~2lVK 2016 02 05.64703 15 44 24.726 -11 51 47.06 25.6w 15KT174 568 C~2lVL 2016 02 11.65893 15 44 35.740 -11 50 38.98 25.3w 15KT174 568 C~2lVL 2016 02 12.59848 15 44 37.163 -11 50 27.31 25.2w 15KT174 568 C~2lVL 2016 03 17.60989 15 44 31.745 -11 40 17.99 25.1w 15KT174 568 C~2lVL 2016 04 03.53046 15 43 51.196 -11 33 38.45 25.2w 15KT174 568 C~2lVL 2016 04 08.58000 15 43 35.046 -11 31 33.14 25.2w 15KT174 568 C~2lVL 2016 05 04.39265 15 41 51.858 -11 20 47.57 25.5w 15KT174 568 C~2lVL 2016 05 30.47009 15 39 52.505 -11 11 14.22 24.9w 15KT174 568 C~2lVL 2016 07 04.30222 15 37 38.995 -11 03 18.69 25.1w 15KT174 568 C~2lVL 2016 07 05.37053 15 37 35.938 -11 03 10.67 25.3w 15KT174 568 C~2lVL 2017 03 28.60286 15 49 34.332 -11 17 05.29 25.8w 15KT174 568 C~2lVL 2017 07 28.30588 15 42 16.508 -10 43 51.34 24.9w 15KT174 568 C~2lVL 2017 08 20.26151 15 42 13.136 -10 46 04.90 25.2w 15KT174 568 C~2lVL 2017 08 26.27332 15 42 20.032 -10 47 07.88 25.3w 15KT174 568 C~2lVL
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 -0.09 0.00 0.09
2 0.0053 -131.44 0.04 6.53 -0.01
3 0.0054 -134.59 -0.12 6.53 -0.13
4 0.0055 -137.23 0.20 7.03 0.24
5 0.7426 9331.17 -0.11 1230.99 0.02
6 0.8028 8926.75 -0.04 1579.70 -0.31
7 0.8108 8825.28 0.06 1623.33 -0.09
8 0.8711 7758.68 0.10 1916.78 -0.05
9 0.8712 7756.07 -0.05 1917.25 -0.06
10 0.8848 7454.91 0.12 1973.39 -0.27
11 0.9745 5188.96 0.21 2236.80 0.02
12 0.9746 5185.63 -0.13 2237.03 0.06
13 0.9747 5182.75 -0.04 2237.11 -0.05
14 0.9777 5105.87 -0.09 2242.39 -0.02
15 0.9859 4893.96 -0.10 2256.00 0.11
16 1.0567 3220.76 -0.08 2307.13 0.15
17 1.0568 3218.54 0.05 2306.83 -0.13
18 1.0651 3052.78 0.12 2305.79 -0.02
19 1.1140 2253.71 -0.09 2274.45 0.12
20 1.1334 2036.08 0.02 2252.22 0.11
21 1.6872 13463.99 -0.11 3103.41 0.03
22 1.7037 13606.16 0.05 3207.45 0.08
23 1.7063 13623.86 0.22 3223.69 -0.02
24 1.7994 13404.49 -0.04 3799.22 0.02
25 1.8457 12729.51 -0.10 4049.58 0.16
26 1.8595 12468.53 0.00 4116.18 -0.13
27 1.9302 10837.19 0.04 4388.92 0.05
28 2.0016 8991.16 -0.20 4532.18 -0.01
29 2.0970 6965.87 0.03 4527.14 0.04
30 2.0999 6920.19 0.07 4524.19 0.19
31 2.8288 17438.88 0.00 6189.33 0.02
32 3.1620 10671.41 -0.04 6633.01 -0.20
33 3.2248 10654.24 0.29 6491.17 0.14
34 3.2413 10768.12 -0.21 6453.77 -0.12
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.
15KT174 quality flag:3 Type: SCATNEAR SCATNEAR SCATNEAR axisobj 51.856 51.896 51.815 ecceobj 0.270 0.271 0.269 incobj 27.537 27.537 27.536 qmin 37.033 36.908 36.543 qmax 68.274 68.428 68.746 amean 52.247 52.321 52.291 amin 51.747 51.838 51.766 amax 52.892 52.929 52.963 emean 0.269 0.274 0.280 emin 0.252 0.258 0.260 emax 0.291 0.293 0.300 imean 28.261 28.152 27.938 imin 27.847 27.744 27.493 imax 28.696 28.656 28.509 excite_mean 0.545 0.546 0.546 fracstop 1.000 1.000 1.000 cjmean 2.811 2.811 2.811 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 160.7 163.3 164.9 kozaiamp 180.0 180.0 180.0