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: 15KO174
# Created Fri Nov 22 02:10:23 2024
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting 36 observations of 36
# Arc: 6.21y
# First observation: 2015/02/25
# Last observation: 2021/05/12
# Chi-squared of fit: 7.99 DOF: 66 RMS: 0.08
# Min/Max residuals: -0.28 0.25
# Exact a, adot, b, bdot, g, gdot:
2.037800E-05 4.046829E-02 -4.408495E-07 -1.880277E-03 3.020781E-02 -1.915632E-03
# Covariance matrix:
1.5258E-13 -3.4009E-14 -5.4245E-15 9.2326E-16 7.7359E-14 -8.0728E-14
-3.4009E-14 1.1418E-13 -1.1315E-15 -3.6490E-15 5.5180E-14 4.5464E-13
-5.4245E-15 -1.1315E-15 6.7165E-14 -2.1923E-14 -6.2101E-15 -3.7445E-15
9.2326E-16 -3.6490E-15 -2.1923E-14 1.7694E-14 -1.6167E-15 -1.7302E-14
7.7359E-14 5.5180E-14 -6.2101E-15 -1.6167E-15 1.1574E-13 2.3572E-13
-8.0728E-14 4.5464E-13 -3.7445E-15 -1.7302E-14 2.3572E-13 2.1460E-12
# lat0 lon0 xBary yBary zBary JD0
7.784096 -126.886011 0.960408 0.030876 -0.224928 2457079.105118
# Heliocentric elements and errors
Epoch: 2457078.5000 = 2015/02/25
Mean Anomaly: 356.72497 +/- 0.002
Argument of Peri: 119.87082 +/- 0.006
Long of Asc Node: 123.75979 +/- 0.001
Inclination: 8.10601 +/- 0.000
Eccentricity: 0.52656993 +/- 0.0000
Semi-Major Axis: 69.86886627 +/- 0.0074
Time of Perihelion: 2459019.1010 +/- 33.5
Perihelion: 33.07802225 +/- 0.0047
Aphelion: 106.65971030 +/- 0.0117
Period (y) 584.0281 +/- 0.09
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X -20.59371866 +/- 0.0002
Ecliptic Y -25.83863511 +/- 0.0003
Ecliptic Z 4.48362747 +/- 0.0001
Ecliptic XDOT 0.00301943 +/- 0.0000
Ecliptic YDOT -0.00208800 +/- 0.0000
Ecliptic ZDOT -0.00019227 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 33.34430522 +/- 0.0003
Geocenter to KBO 33.10407505 +/- 0.0004
# Hcoef: 7.95
The following table shows the complete astrometric record for 15KO174. 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 (15KO174) followed by the observatory code and reference code for the source of the astrometry.
2015 02 25.60434 15 30 50.516 -11 00 31.45 23.1r 15KO174 568 C~2lVK 2015 03 19.60818 15 30 25.815 -10 54 19.00 23.3r 15KO174 568 C~2lVK 2015 03 22.52639 15 30 18.497 -10 53 18.86 23.2r 15KO174 568 C~2lVK 2015 04 13.53954 15 28 57.874 -10 44 59.15 23.2r 15KO174 568 C~2lVK 2015 04 13.58065 15 28 57.677 -10 44 58.17 23.3r 15KO174 568 C~2lVK 2015 04 18.54408 15 28 34.357 -10 43 00.26 23.0r 15KO174 568 C~2lVK 2015 05 22.46905 15 25 30.819 -10 30 45.58 23.1r 15KO174 568 C~2lVK 2015 05 24.38151 15 25 20.241 -10 30 11.90 23.1r 15KO174 568 C~2lVK 2015 05 24.42760 15 25 19.974 -10 30 11.05 23.1r 15KO174 568 C~2lVK 2015 05 24.46857 15 25 19.748 -10 30 10.35 23.1r 15KO174 568 C~2lVK 2015 05 25.45951 15 25 14.274 -10 29 53.49 23.2r 15KO174 568 C~2lVK 2015 05 26.45643 15 25 08.804 -10 29 36.75 23.1r 15KO174 568 C~2lVK 2015 06 20.34904 15 23 05.184 -10 24 45.17 23.3r 15KO174 568 C~2lVK 2015 06 20.38989 15 23 05.004 -10 24 44.91 23.3r 15KO174 568 C~2lVK 2015 06 23.40938 15 22 52.490 -10 24 28.17 23.3r 15KO174 568 C~2lVK 2015 07 11.28306 15 21 54.022 -10 24 21.24 23.2r 15KO174 568 C~2lVK 2015 07 18.35221 15 21 39.260 -10 25 03.18 15KO174 568 C~2lVK 2016 02 05.63489 15 39 22.455 -11 42 47.44 23.3w 15KO174 568 C~2lVK 2016 02 11.64674 15 39 37.860 -11 42 20.93 23.5w 15KO174 568 C~2lVK 2016 03 17.59717 15 39 40.205 -11 34 53.57 23.3w 15KO174 568 C~2lVK 2016 04 03.52224 15 38 51.749 -11 29 07.65 23.2w 15KO174 568 C~2lVK 2016 04 08.57191 15 38 32.105 -11 27 16.01 23.3w 15KO174 568 C~2lVK 2016 04 29.45352 15 36 52.263 -11 19 26.66 23.3w 15KO174 568 C~2lVK 2016 05 04.38860 15 36 25.564 -11 17 39.82 23.3w 15KO174 568 C~2lVK 2016 05 30.49033 15 33 59.590 -11 09 38.93 23.3w 15KO174 568 C~2lVK 2016 07 03.35835 15 31 24.709 -11 05 15.72 23.6w 15KO174 568 C~2lVK 2016 07 05.34215 15 31 18.237 -11 05 16.42 23.5w 15KO174 568 C~2lVK 2017 03 28.59816 15 48 31.684 -12 10 46.31 23.5w 15KO174 568 C~2lVK 2017 06 26.28306 15 41 10.186 -11 45 55.41 23.5w 15KO174 568 C~2lVK 2017 07 28.28692 15 39 42.681 -11 47 46.31 23.7w 15KO174 568 C~2lVK 2017 07 28.30120 15 39 42.668 -11 47 46.55 23.4w 15KO174 568 C~2lVK 2017 07 29.36204 15 39 41.560 -11 47 58.03 22.4w 15KO174 568 C~2lVK 2017 08 19.25564 15 39 46.439 -11 53 32.72 23.4w 15KO174 568 C~2lVK 2017 08 25.26415 15 39 57.324 -11 55 41.98 23.6w 15KO174 568 C~2lVK 2021 05 12.414670 16 23 23.554 -14 24 24.26 23.3G 15KO174 G37 C~4pVr 2021 05 12.446770 16 23 23.388 -14 24 23.99 15KO174 G37 C~4pVs
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 0.14 0.00 -0.15
2 0.0602 0.00 -0.07 0.00 0.00
3 0.0682 0.00 -0.06 0.00 -0.02
4 0.1285 0.00 -0.01 0.00 0.01
5 0.1286 0.00 -0.10 0.00 0.01
6 0.1422 0.00 -0.11 0.00 -0.04
7 0.2351 0.00 -0.00 0.00 -0.05
8 0.2403 0.00 0.19 0.00 -0.01
9 0.2404 0.00 0.08 0.00 0.04
10 0.2406 0.00 0.15 0.00 0.03
11 0.2433 0.00 -0.04 0.00 -0.04
12 0.2460 0.00 -0.01 0.00 -0.01
13 0.3142 0.00 -0.00 0.00 0.03
14 0.3143 0.00 -0.03 0.00 0.03
15 0.3225 0.00 0.00 0.00 0.02
16 0.3715 0.00 -0.01 0.00 0.00
17 0.3908 0.00 -0.11 0.00 0.00
18 0.9446 0.00 0.02 0.00 -0.01
19 0.9611 0.00 0.02 0.00 -0.03
20 1.0568 0.00 0.00 0.00 -0.02
21 1.1031 0.00 -0.01 0.00 0.03
22 1.1170 0.00 -0.01 0.00 -0.02
23 1.1741 0.00 -0.04 0.00 -0.00
24 1.1876 0.00 0.02 0.00 -0.11
25 1.2591 0.00 -0.00 0.00 -0.00
26 1.3518 0.00 -0.28 0.00 0.01
27 1.3573 0.00 -0.01 0.00 0.03
28 2.0862 0.00 -0.09 0.00 0.09
29 2.3318 0.00 0.07 0.00 0.09
30 2.4194 0.00 0.10 0.00 -0.04
31 2.4194 0.00 0.16 0.00 -0.13
32 2.4223 0.00 0.03 0.00 0.25
33 2.4795 0.00 -0.04 0.00 0.09
34 2.4960 0.00 -0.05 0.00 0.11
35 6.2089 0.00 -0.13 0.00 0.04
36 6.2090 0.00 0.08 0.00 -0.19
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.
15KO174 quality flag:3 Type: 7:2EEEEE 7:2EEEEE 7:2EEEEE axisobj 68.723 68.722 68.723 ecceobj 0.519 0.519 0.519 incobj 8.104 8.104 8.104 qmin 32.325 32.330 32.321 qmax 108.965 109.013 108.866 amean 69.409 69.409 69.408 amin 68.261 68.323 68.310 amax 70.981 71.004 70.933 emean 0.524 0.524 0.524 emin 0.514 0.514 0.514 emax 0.535 0.535 0.535 imean 6.482 6.481 6.482 imin 6.226 6.224 6.227 imax 6.748 6.748 6.753 excite_mean 0.536 0.536 0.536 fracstop 1.000 1.000 1.000 cjmean 3.004 3.004 3.004 libcent 0 180.5 180.5 178.8 libamp 0 101.4 101.5 101.9 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 198.9 199.0 199.3 kozaiamp 88.8 89.2 89.5