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: 15KM173
# Created Sun Dec 22 02:10:23 2024
# Orbit generated from Bernstein formalism
# Fitting 41 observations of 41
# Arc: 2.84y
# First observation: 2014/05/29
# Last observation: 2017/03/30
Preliminary a, adot, b, bdot, g, gdot:
0.000160 0.027848 0.000012 0.003049 0.026902 0.000000
# Chi-squared of fit: 22.61 DOF: 76 RMS: 0.13
# Min/Max residuals: -0.60 0.27
# Exact a, adot, b, bdot, g, gdot:
1.720745E-05 2.842410E-02 2.313832E-06 3.109650E-03 2.760832E-02 6.258916E-03
# Covariance matrix:
1.8766E-13 -2.2155E-13 4.1028E-15 -1.2198E-14 -5.4005E-14 -1.8602E-12
-2.2155E-13 4.2126E-13 -1.0581E-14 3.1112E-14 1.3067E-13 4.7558E-12
4.1028E-15 -1.0581E-14 1.3617E-13 -8.9403E-14 -3.5267E-15 -1.4524E-13
-1.2198E-14 3.1112E-14 -8.9403E-14 8.1945E-14 1.6389E-14 4.4790E-13
-5.4005E-14 1.3067E-13 -3.5267E-15 1.6389E-14 1.9326E-13 2.3119E-12
-1.8602E-12 4.7558E-12 -1.4524E-13 4.4790E-13 2.3119E-12 6.7796E-11
# lat0 lon0 xBary yBary zBary JD0
5.569255 -127.904593 -0.275264 0.094827 -0.971907 2456806.847808
# Heliocentric elements and errors
Epoch: 2456800.5000 = 2014/05/23
Mean Anomaly: 62.47140 +/- 0.024
Argument of Peri: 312.63722 +/- 0.012
Long of Asc Node: 191.68119 +/- 0.003
Inclination: 8.26088 +/- 0.000
Eccentricity: 0.23003169 +/- 0.0003
Semi-Major Axis: 39.50886794 +/- 0.0059
Time of Perihelion: 2441059.9804 +/- 5.0
Perihelion: 30.42057638 +/- 0.0123
Aphelion: 48.59715950 +/- 0.0135
Period (y) 248.3419 +/- 0.06
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X -22.53131308 +/- 0.0003
Ecliptic Y -29.38286191 +/- 0.0005
Ecliptic Z 3.51534184 +/- 0.0001
Ecliptic XDOT 0.00185770 +/- 0.0000
Ecliptic YDOT -0.00219914 +/- 0.0000
Ecliptic ZDOT 0.00036728 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 37.19368591 +/- 0.0004
Geocenter to KBO 36.22095962 +/- 0.0006
# Hcoef: 8.65
The following table shows the complete astrometric record for 15KM173. 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 (15KM173) followed by the observatory code and reference code for the source of the astrometry.
2014 05 29.34703 15 24 35.831 -12 54 18.58 24.1r 15KM173 568 C~2lVF 2014 05 29.38590 15 24 35.636 -12 54 17.91 24.6r 15KM173 568 C~2lVF 2014 05 29.42474 15 24 35.431 -12 54 17.07 23.9r 15KM173 568 C~2lVF 2014 05 31.37090 15 24 25.526 -12 53 41.00 23.8r 15KM173 568 C~2lVF 2014 06 21.35020 15 22 48.931 -12 48 27.95 24.3r 15KM173 568 C~2lVF 2014 06 21.38905 15 22 48.759 -12 48 27.61 15KM173 568 C~2lVF 2014 07 19.26644 15 21 27.219 -12 45 49.54 25.0r 15KM173 568 C~2lVF 2015 02 20.65258 15 36 52.638 -13 39 15.68 24.3r 15KM173 568 C~2lVF 2015 03 19.56666 15 36 29.102 -13 33 03.44 24.3r 15KM173 568 C~2lVF 2015 03 21.62515 15 36 24.225 -13 32 26.22 24.8r 15KM173 568 C~2lVF 2015 04 12.48402 15 35 10.194 -13 24 57.30 24.9r 15KM173 568 C~2lVF 2015 04 12.52502 15 35 10.002 -13 24 56.30 24.0r 15KM173 568 C~2lVF 2015 04 18.50669 15 34 43.748 -13 22 42.57 25.2r 15KM173 568 C~2lVF 2015 05 17.37425 15 32 17.233 -13 12 03.04 24.2r 15KM173 568 C~2lVF 2015 05 17.37924 15 32 17.179 -13 12 03.01 24.5r 15KM173 568 C~2lVF 2015 05 17.42094 15 32 16.958 -13 12 02.13 24.1r 15KM173 568 C~2lVF 2015 05 17.46306 15 32 16.727 -13 12 01.25 24.0r 15KM173 568 C~2lVF 2015 05 24.36500 15 31 40.128 -13 09 42.55 24.0r 15KM173 568 C~2lVF 2015 05 24.41125 15 31 39.884 -13 09 41.62 24.5r 15KM173 568 C~2lVF 2015 05 24.45211 15 31 39.657 -13 09 40.74 24.2r 15KM173 568 C~2lVF 2015 05 26.43973 15 31 29.234 -13 09 02.79 24.1r 15KM173 568 C~2lVF 2015 06 18.33918 15 29 38.127 -13 02 59.78 24.2r 15KM173 568 C~2lVF 2015 06 18.38024 15 29 37.942 -13 02 59.37 24.6r 15KM173 568 C~2lVF 2015 06 21.35487 15 29 25.382 -13 02 24.39 24.4r 15KM173 568 C~2lVF 2015 07 10.38689 15 28 19.732 -13 00 00.26 24.0r 15KM173 568 C~2lVF 2015 07 15.31053 15 28 07.596 -12 59 46.48 24.0r 15KM173 568 C~2lVF 2015 07 18.31267 15 28 01.254 -12 59 43.42 24.3r 15KM173 568 C~2lVF 2015 08 11.33945 15 27 42.557 -13 01 32.06 24.2r 15KM173 568 C~2lVF 2016 02 06.62103 15 42 54.114 -13 52 41.25 25.0w 15KM173 568 C~2lVF 2016 02 12.60657 15 43 05.982 -13 52 13.82 24.5w 15KM173 568 C~2lVF 2016 02 12.61062 15 43 05.987 -13 52 13.91 24.5w 15KM173 568 C~2lVF 2016 04 03.53855 15 42 12.289 -13 40 15.80 24.9w 15KM173 568 C~2lVF 2016 04 03.54259 15 42 12.282 -13 40 15.66 24.9w 15KM173 568 C~2lVF 2016 04 08.58811 15 41 53.637 -13 38 31.04 25.1w 15KM173 568 C~2lVF 2016 04 08.59215 15 41 53.609 -13 38 30.88 25.1w 15KM173 568 C~2lVF 2016 04 29.47374 15 40 19.640 -13 30 57.94 24.5w 15KM173 568 C~2lVF 2016 05 04.40882 15 39 54.597 -13 29 10.79 24.7w 15KM173 568 C~2lVF 2016 05 30.48224 15 37 37.530 -13 20 34.33 24.5w 15KM173 568 C~2lVF 2016 07 04.28603 15 35 05.617 -13 13 36.00 24.8w 15KM173 568 C~2lVF 2016 07 05.37863 15 35 02.031 -13 13 29.76 23.1w 15KM173 568 C~2lVF 2017 03 30.57261 15 48 51.615 -13 53 12.37 24.8w 15KM173 568 C~2lVF
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 -0.19 0.00 -0.11
2 0.0001 -2.93 -0.06 -0.07 -0.13
3 0.0002 -6.04 -0.12 -0.00 -0.03
4 0.0055 -155.28 0.07 -1.41 0.20
5 0.0630 -1601.27 0.08 -53.89 -0.01
6 0.0631 -1603.79 -0.06 -54.19 -0.16
7 0.1394 -2797.88 0.20 -203.07 -0.28
8 0.7318 11100.08 -0.05 18.18 0.11
9 0.8055 10676.76 -0.07 298.01 0.02
10 0.8112 10598.59 -0.12 317.16 -0.17
11 0.8710 9439.83 0.14 494.05 0.07
12 0.8711 9436.86 -0.11 494.35 0.11
13 0.8875 9032.03 0.05 531.94 0.25
14 0.9665 6798.64 0.24 634.43 0.24
15 0.9665 6797.87 -0.12 634.26 0.07
16 0.9667 6794.52 -0.06 634.33 0.11
17 0.9668 6791.03 -0.09 634.36 0.10
18 0.9857 6238.27 0.03 638.61 0.01
19 0.9858 6234.59 0.08 638.65 0.06
20 0.9859 6231.15 -0.06 638.69 0.11
21 0.9914 6074.11 0.09 638.33 -0.04
22 1.0541 4410.32 -0.05 592.45 -0.04
23 1.0542 4407.60 -0.08 592.18 -0.15
24 1.0623 4221.02 0.16 580.92 -0.00
25 1.1144 3255.35 -0.13 483.92 0.02
26 1.1279 3080.03 0.18 453.40 0.27
27 1.1361 2989.45 0.08 433.43 -0.05
28 1.2019 2751.55 0.03 260.49 -0.10
29 1.6927 16431.88 0.16 478.22 -0.06
30 1.7091 16594.63 0.01 545.34 0.08
31 1.7091 16594.72 0.01 545.27 -0.04
32 1.8486 15660.97 -0.05 1062.72 -0.11
33 1.8486 15660.84 0.04 1062.83 -0.03
34 1.8624 15370.52 0.06 1101.08 -0.04
35 1.8624 15370.08 -0.12 1101.14 -0.01
36 1.9196 13924.66 0.09 1219.89 -0.12
37 1.9331 13542.74 0.11 1237.90 -0.10
38 2.0045 11469.76 0.06 1265.23 -0.01
39 2.0998 9210.65 0.19 1139.92 0.03
40 2.1028 9158.22 -0.60 1133.36 -0.16
41 2.8370 21549.19 -0.02 1650.52 0.06
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.
15KM173 quality flag:3 Type: 3:2E 3:2E 3:2E axisobj 39.238 39.255 39.222 ecceobj 0.226 0.226 0.225 incobj 8.287 8.287 8.287 qmin 28.793 28.841 28.734 qmax 50.488 50.657 50.627 amean 39.455 39.455 39.454 amin 39.067 39.037 39.072 amax 39.925 39.931 39.895 emean 0.239 0.238 0.240 emin 0.205 0.207 0.206 emax 0.268 0.269 0.270 imean 7.166 7.332 7.019 imin 4.912 5.218 4.664 imax 9.148 9.220 9.131 excite_mean 0.271 0.272 0.271 fracstop 1.000 1.000 1.000 cjmean 2.968 2.967 2.968 libcent 0 180.5 180.4 180.1 libamp 0 49.3 57.6 40.6 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 260.4 260.2 261.3 kozaiamp 59.4 57.5 59.2