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: 15KO173
# Created Sun Dec 22 02:10:23 2024
# Orbit generated from Bernstein formalism
# Fitting 45 observations of 45
# Arc: 3.24y
# First observation: 2014/05/29
# Last observation: 2017/08/24
Preliminary a, adot, b, bdot, g, gdot:
0.000142 0.038047 -0.000052 -0.007817 0.032095 0.000000
# Chi-squared of fit: 9.69 DOF: 84 RMS: 0.08
# Min/Max residuals: -0.23 0.40
# Exact a, adot, b, bdot, g, gdot:
1.870010E-05 3.854056E-02 -3.565376E-06 -7.945580E-03 3.236507E-02 7.017651E-04
# Covariance matrix:
1.6124E-13 -1.8320E-13 -1.3253E-14 2.7650E-14 -5.4472E-14 -1.1250E-12
-1.8320E-13 3.3412E-13 2.9202E-14 -6.1780E-14 8.5362E-14 2.4985E-12
-1.3253E-14 2.9202E-14 1.0282E-13 -5.7945E-14 9.7287E-15 2.4883E-13
2.7650E-14 -6.1780E-14 -5.7945E-14 5.3148E-14 -1.8159E-14 -5.2521E-13
-5.4472E-14 8.5362E-14 9.7287E-15 -1.8159E-14 1.2701E-13 7.7683E-13
-1.1250E-12 2.4985E-12 2.4883E-13 -5.2521E-13 7.7683E-13 2.1262E-11
# lat0 lon0 xBary yBary zBary JD0
6.006710 -127.177040 -0.262842 0.102602 -0.974552 2456806.847808
# Heliocentric elements and errors
Epoch: 2456800.5000 = 2014/05/23
Mean Anomaly: 6.59012 +/- 0.026
Argument of Peri: 143.33840 +/- 0.040
Long of Asc Node: 79.36977 +/- 0.001
Inclination: 13.06033 +/- 0.000
Eccentricity: 0.19467458 +/- 0.0001
Semi-Major Axis: 39.47997412 +/- 0.0023
Time of Perihelion: 2455141.8512 +/- 6.6
Perihelion: 31.79422673 +/- 0.0028
Aphelion: 47.16572150 +/- 0.0035
Period (y) 248.0696 +/- 0.02
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X -18.95233558 +/- 0.0002
Ecliptic Y -25.42125791 +/- 0.0003
Ecliptic Z 3.23321370 +/- 0.0000
Ecliptic XDOT 0.00251424 +/- 0.0000
Ecliptic YDOT -0.00207682 +/- 0.0000
Ecliptic ZDOT -0.00066211 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 31.87295168 +/- 0.0002
Geocenter to KBO 30.89750325 +/- 0.0003
# Hcoef: 8.78
The following table shows the complete astrometric record for 15KO173. 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 (15KO173) followed by the observatory code and reference code for the source of the astrometry.
2014 05 29.34703 15 27 55.136 -12 39 40.80 24.0r 15KO173 568 C~2lVG 2014 05 29.38590 15 27 54.898 -12 39 40.12 23.7r 15KO173 568 C~2lVG 2014 05 29.42474 15 27 54.662 -12 39 39.67 24.0r 15KO173 568 C~2lVG 2014 05 30.44923 15 27 48.606 -12 39 24.90 23.8r 15KO173 568 C~2lVG 2014 05 30.45456 15 27 48.546 -12 39 24.75 23.6r 15KO173 568 C~2lVG 2014 05 31.37090 15 27 43.140 -12 39 11.97 23.9r 15KO173 568 C~2lVG 2014 06 21.35020 15 25 50.717 -12 35 41.51 23.9r 15KO173 568 C~2lVG 2014 06 21.38905 15 25 50.525 -12 35 41.29 24.0r 15KO173 568 C~2lVG 2015 02 20.66080 15 42 37.443 -14 02 16.84 24.3r 15KO173 568 C~2lVG 2015 03 19.57486 15 42 17.165 -13 58 28.61 24.0r 15KO173 568 C~2lVG 2015 03 21.63357 15 42 11.961 -13 58 00.95 24.0r 15KO173 568 C~2lVG 2015 04 12.49220 15 40 49.686 -13 52 07.00 24.0r 15KO173 568 C~2lVG 2015 04 12.53320 15 40 49.474 -13 52 06.25 23.7r 15KO173 568 C~2lVG 2015 04 18.51488 15 40 19.641 -13 50 16.48 23.6r 15KO173 568 C~2lVG 2015 05 17.38763 15 37 30.535 -13 41 26.64 23.6r 15KO173 568 C~2lVG 2015 05 17.42929 15 37 30.265 -13 41 25.86 23.6r 15KO173 568 C~2lVG 2015 05 17.47149 15 37 29.993 -13 41 25.08 23.3r 15KO173 568 C~2lVG 2015 05 17.47632 15 37 29.967 -13 41 25.17 23.6r 15KO173 568 C~2lVG 2015 05 24.36911 15 36 47.321 -13 39 33.00 23.8r 15KO173 568 C~2lVG 2015 05 24.41533 15 36 47.031 -13 39 32.29 23.6r 15KO173 568 C~2lVG 2015 05 24.45620 15 36 46.775 -13 39 31.57 23.8r 15KO173 568 C~2lVG 2015 05 26.44379 15 36 34.586 -13 39 01.43 23.5r 15KO173 568 C~2lVG 2015 06 18.34328 15 34 24.086 -13 34 35.78 23.8r 15KO173 568 C~2lVG 2015 06 18.38434 15 34 23.882 -13 34 35.52 23.6r 15KO173 568 C~2lVG 2015 06 21.35896 15 34 09.033 -13 34 14.53 24.0r 15KO173 568 C~2lVG 2015 07 10.39102 15 32 51.237 -13 33 28.86 24.0r 15KO173 568 C~2lVG 2015 07 17.34619 15 32 31.482 -13 33 52.87 23.8r 15KO173 568 C~2lVG 2015 07 18.31678 15 32 29.154 -13 33 58.03 23.7r 15KO173 568 C~2lVG 2016 02 06.64126 15 50 17.713 -14 56 53.20 24.1w 15KO173 568 C~2lVG 2016 02 12.62680 15 50 33.803 -14 57 12.44 24.3w 15KO173 568 C~2lVG 2016 03 15.64024 15 50 41.253 -14 54 48.43 23.3w 15KO173 568 C~2lVG 2016 04 03.56687 15 49 46.762 -14 50 45.27 24.2w 15KO173 568 C~2lVG 2016 04 08.61643 15 49 25.936 -14 49 27.34 24.2w 15KO173 568 C~2lVG 2016 04 09.56037 15 49 21.787 -14 49 12.18 23.9w 15KO173 568 C~2lVG 2016 04 29.52981 15 47 38.517 -14 43 33.32 23.9w 15KO173 568 C~2lVG 2016 05 04.50238 15 47 09.277 -14 42 07.03 23.9w 15KO173 568 C~2lVG 2016 05 30.44581 15 44 29.472 -14 35 18.82 24.0w 15KO173 568 C~2lVG 2016 07 04.29413 15 41 28.013 -14 30 42.31 24.0w 15KO173 568 C~2lVG 2016 07 05.36242 15 41 23.845 -14 30 40.99 24.1w 15KO173 568 C~2lVG 2017 04 03.61140 15 58 11.286 -15 45 41.61 24.5w 15KO173 568 C~2lVG 2017 04 03.61609 15 58 11.270 -15 45 41.53 24.2w 15KO173 568 C~2lVG 2017 04 04.49990 15 58 07.989 -15 45 29.86 24.2w 15KO173 568 C~2lVG 2017 05 21.53807 15 53 53.541 -15 33 33.72 23.1w 15KO173 568 C~2lVG 2017 08 20.28063 15 48 33.676 -15 32 29.22 23.9w 15KO173 568 C~2lVG 2017 08 24.25065 15 48 39.262 -15 33 39.25 24.6w 15KO173 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 0.03 0.00 -0.07
2 0.0001 -3.54 -0.03 -0.20 0.04
3 0.0002 -7.00 -0.01 -0.61 -0.07
4 0.0030 -96.54 0.40 -8.14 0.14
5 0.0030 -97.43 -0.01 -8.21 0.11
6 0.0055 -177.26 -0.06 -15.33 0.05
7 0.0630 -1823.79 -0.06 -218.55 -0.04
8 0.0631 -1826.57 -0.14 -219.04 -0.07
9 0.7319 13708.83 -0.14 -1733.25 0.11
10 0.8056 13367.27 0.02 -1579.34 0.00
11 0.8112 13286.82 0.05 -1570.00 0.03
12 0.8710 12034.67 -0.04 -1504.64 0.03
13 0.8711 12031.48 -0.21 -1504.63 -0.00
14 0.8875 11581.90 -0.03 -1499.50 -0.05
15 0.9666 9056.29 0.19 -1564.94 -0.06
16 0.9667 9052.28 0.07 -1565.11 -0.01
17 0.9668 9048.23 -0.02 -1565.29 0.03
18 0.9668 9047.89 0.08 -1565.47 -0.12
19 0.9857 8416.33 -0.05 -1604.04 0.03
20 0.9858 8412.05 -0.05 -1604.35 0.02
21 0.9859 8408.24 -0.07 -1604.54 0.11
22 0.9914 8228.21 0.00 -1617.52 -0.05
23 1.0541 6314.94 -0.11 -1814.27 0.00
24 1.0542 6311.99 0.04 -1814.73 -0.02
25 1.0623 6096.58 0.01 -1846.36 0.01
26 1.1144 4983.79 -0.00 -2075.39 -0.01
27 1.1335 4709.92 -0.10 -2168.34 -0.04
28 1.1361 4678.22 0.05 -2181.56 -0.00
29 1.6928 21017.45 0.05 -3410.35 -0.02
30 1.7092 21251.47 -0.00 -3376.98 -0.03
31 1.7968 21325.20 0.02 -3211.64 -0.19
32 1.8487 20492.24 -0.04 -3150.48 0.11
33 1.8625 20177.40 0.05 -3142.05 -0.11
34 1.8651 20114.77 -0.03 -3140.75 -0.03
35 1.9197 18565.42 0.13 -3147.55 -0.03
36 1.9333 18129.22 -0.01 -3159.47 -0.00
37 2.0044 15762.00 0.04 -3290.81 -0.01
38 2.0998 13121.83 0.03 -3630.68 0.04
39 2.1027 13062.42 0.01 -3643.49 0.00
40 2.8481 28451.97 0.03 -4784.65 0.01
41 2.8481 28451.72 0.05 -4784.62 0.03
42 2.8505 28402.02 0.05 -4783.31 0.02
43 2.9793 24596.39 -0.23 -4877.48 -0.02
44 3.2277 20022.07 0.01 -5841.79 0.08
45 3.2386 20117.48 0.03 -5892.27 0.05
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.
15KO173 quality flag:3 Type: 3:2E 3:2E 3:2E axisobj 39.215 39.223 39.207 ecceobj 0.189 0.189 0.189 incobj 13.061 13.061 13.061 qmin 30.904 30.875 30.914 qmax 48.551 48.467 48.355 amean 39.455 39.456 39.455 amin 39.066 39.058 39.085 amax 39.892 39.907 39.885 emean 0.189 0.190 0.189 emin 0.165 0.167 0.165 emax 0.217 0.216 0.215 imean 11.896 11.882 11.906 imin 11.037 11.032 11.047 imax 12.847 12.829 12.863 excite_mean 0.280 0.280 0.280 fracstop 1.000 1.000 1.000 cjmean 2.963 2.963 2.963 libcent 0 180.3 181.1 180.2 libamp 0 54.0 57.8 50.0 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 179.1 178.3 179.9 kozaiamp 180.0 180.0 180.0