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: 15KS173
# Created Sun Dec 22 02:10:23 2024
# Orbit generated from Bernstein formalism
# Fitting 31 observations of 31
# Arc: 3.24y
# First observation: 2014/05/29
# Last observation: 2017/08/25
Preliminary a, adot, b, bdot, g, gdot:
0.000347 0.031048 0.000220 0.018427 0.030887 0.000000
# Chi-squared of fit: 16.58 DOF: 56 RMS: 0.13
# Min/Max residuals: -0.36 0.28
# Exact a, adot, b, bdot, g, gdot:
1.571092E-05 3.177964E-02 9.465779E-06 1.886709E-02 3.133027E-02 2.787593E-03
# Covariance matrix:
2.4527E-13 -2.8908E-13 4.5826E-14 -1.0816E-13 -8.6909E-14 -2.2962E-12
-2.8908E-13 5.6379E-13 -1.1721E-13 2.7544E-13 1.6609E-13 5.8850E-12
4.5826E-14 -1.1721E-13 2.0028E-13 -1.7552E-13 -4.4130E-14 -1.4671E-12
-1.0816E-13 2.7544E-13 -1.7552E-13 2.5466E-13 1.0664E-13 3.4498E-12
-8.6909E-14 1.6609E-13 -4.4130E-14 1.0664E-13 1.9934E-13 2.1865E-12
-2.2962E-12 5.8850E-12 -1.4671E-12 3.4498E-12 2.1865E-12 7.3636E-11
# lat0 lon0 xBary yBary zBary JD0
5.875418 -129.027852 -0.294547 0.099440 -0.965778 2456806.859478
# Heliocentric elements and errors
Epoch: 2456800.5000 = 2014/05/23
Mean Anomaly: 21.74664 +/- 0.043
Argument of Peri: 339.42639 +/- 0.068
Long of Asc Node: 221.97882 +/- 0.000
Inclination: 31.16128 +/- 0.000
Eccentricity: 0.18412059 +/- 0.0002
Semi-Major Axis: 39.37433465 +/- 0.0037
Time of Perihelion: 2451349.1010 +/- 10.8
Perihelion: 32.12470909 +/- 0.0070
Aphelion: 46.62396021 +/- 0.0077
Period (y) 247.0746 +/- 0.03
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X -20.37709348 +/- 0.0003
Ecliptic Y -25.60309625 +/- 0.0004
Ecliptic Z 3.26766933 +/- 0.0001
Ecliptic XDOT 0.00210581 +/- 0.0000
Ecliptic YDOT -0.00180952 +/- 0.0000
Ecliptic ZDOT 0.00166513 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 32.88498349 +/- 0.0003
Geocenter to KBO 31.91801061 +/- 0.0005
# Hcoef: 9.96
The following table shows the complete astrometric record for 15KS173. 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 (15KS173) followed by the observatory code and reference code for the source of the astrometry.
2014 05 29.35870 15 20 29.030 -12 19 32.21 24.7r 15KS173 568 C~2lVG 2014 05 29.39755 15 20 28.793 -12 19 31.36 25.2r 15KS173 568 C~2lVG 2014 05 29.43638 15 20 28.574 -12 19 29.79 25.3r 15KS173 568 C~2lVG 2014 06 21.36572 15 18 32.558 -12 09 46.69 24.8r 15KS173 568 C~2lVG 2014 06 21.40460 15 18 32.391 -12 09 45.87 25.2r 15KS173 568 C~2lVG 2015 02 23.64434 15 35 03.189 -12 34 29.99 26.2r 15KS173 568 C~2lVG 2015 03 19.58718 15 34 36.978 -12 23 55.48 24.6r 15KS173 568 C~2lVG 2015 04 12.50451 15 33 09.782 -12 10 43.77 25.4r 15KS173 568 C~2lVG 2015 04 12.54547 15 33 09.590 -12 10 42.17 24.8r 15KS173 568 C~2lVG 2015 04 18.52716 15 32 40.447 -12 07 12.58 26.3r 15KS173 568 C~2lVG 2015 05 17.40013 15 29 57.891 -11 50 42.27 25.0r 15KS173 568 C~2lVG 2015 05 17.44183 15 29 57.680 -11 50 41.18 26.6r 15KS173 568 C~2lVG 2015 05 24.38557 15 29 16.917 -11 47 04.37 24.7r 15KS173 568 C~2lVG 2015 05 24.43166 15 29 16.670 -11 47 02.79 25.0r 15KS173 568 C~2lVG 2015 05 24.47270 15 29 16.410 -11 47 01.72 25.1r 15KS173 568 C~2lVG 2015 05 26.46061 15 29 04.900 -11 46 02.22 24.9r 15KS173 568 C~2lVG 2015 06 21.37538 15 26 48.998 -11 35 15.53 24.8r 15KS173 568 C~2lVG 2015 06 21.39181 15 26 48.929 -11 35 15.31 25.1r 15KS173 568 C~2lVG 2015 07 11.28721 15 25 35.962 -11 30 20.41 25.2r 15KS173 568 C~2lVG 2015 07 18.35664 15 25 19.084 -11 29 22.77 24.9r 15KS173 568 C~2lVG 2015 08 11.34354 15 25 03.020 -11 29 14.12 25.0r 15KS173 568 C~2lVG 2016 02 11.66311 15 42 47.212 -12 02 56.97 25.0w 15KS173 568 C~2lVG 2016 02 12.60253 15 42 49.148 -12 02 40.25 25.5w 15KS173 568 C~2lVG 2016 03 17.60989 15 42 45.650 -11 48 33.41 25.3w 15KS173 568 C~2lVG 2016 04 03.53046 15 41 54.641 -11 39 21.36 25.7w 15KS173 568 C~2lVG 2016 04 08.58000 15 41 34.147 -11 36 27.30 25.1w 15KS173 568 C~2lVG 2016 04 29.45756 15 39 50.357 -11 24 19.24 25.2w 15KS173 568 C~2lVG 2016 05 04.39265 15 39 22.623 -11 21 30.91 24.9w 15KS173 568 C~2lVG 2016 05 30.47009 15 36 50.770 -11 08 04.67 25.5w 15KS173 568 C~2lVG 2016 07 03.35835 15 34 07.085 -10 56 43.00 24.5w 15KS173 568 C~2lVG 2017 08 25.27346 15 41 14.880 -10 22 32.48 25.4w 15KS173 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 0.01
2 0.0001 -3.57 -0.05 -0.07 -0.33
3 0.0002 -7.08 -0.10 0.63 0.08
4 0.0630 -1800.55 0.02 126.59 0.05
5 0.0631 -1803.13 0.09 126.75 0.08
6 0.7400 12638.63 0.08 2331.86 0.01
7 0.8056 12110.15 -0.16 2854.70 0.27
8 0.8710 10673.13 -0.02 3310.40 -0.03
9 0.8711 10670.00 -0.01 3311.26 0.15
10 0.8875 10203.08 0.02 3409.60 -0.20
11 0.9666 7642.20 -0.36 3780.23 0.03
12 0.9667 7638.93 0.26 3780.52 -0.07
13 0.9857 7004.46 -0.22 3841.77 -0.16
14 0.9858 7000.55 0.11 3842.40 0.11
15 0.9859 6996.58 -0.09 3842.49 -0.12
16 0.9914 6817.85 0.05 3858.04 -0.11
17 1.0623 4721.25 0.06 3985.01 0.13
18 1.0624 4720.21 0.18 3984.97 0.06
19 1.1168 3607.50 -0.03 4000.60 -0.10
20 1.1362 3352.77 0.09 3993.81 0.10
21 1.2019 3121.99 -0.10 3942.54 0.20
22 1.7065 18826.79 -0.13 5816.51 -0.15
23 1.7091 18850.67 -0.04 5839.62 -0.10
24 1.8022 18599.40 0.28 6654.01 -0.05
25 1.8485 17734.10 0.05 7013.21 -0.11
26 1.8623 17397.79 0.02 7110.68 0.15
27 1.9195 15731.30 -0.05 7452.68 0.01
28 1.9330 15292.34 0.07 7517.99 -0.14
29 2.0044 12917.41 -0.05 7759.57 0.05
30 2.0972 10404.38 0.01 7831.34 0.19
31 3.2414 16062.14 -0.07 11370.02 -0.04
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.
15KS173 quality flag:3 Type: 3:2E 3:2E 3:2E axisobj 39.142 39.156 39.129 ecceobj 0.179 0.179 0.178 incobj 31.230 31.230 31.230 qmin 30.801 30.784 30.870 qmax 48.428 48.426 48.426 amean 39.454 39.454 39.454 amin 39.117 39.137 39.100 amax 39.833 39.828 39.844 emean 0.169 0.167 0.169 emin 0.111 0.109 0.111 emax 0.218 0.218 0.216 imean 32.209 32.241 32.196 imin 31.328 31.292 31.378 imax 33.048 33.069 33.023 excite_mean 0.560 0.560 0.560 fracstop 1.000 1.000 1.000 cjmean 2.671 2.670 2.671 libcent 0 179.4 179.6 180.0 libamp 0 55.6 48.7 64.0 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 183.4 185.3 180.8 kozaiamp 180.0 180.0 180.0