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: 15KO166 # Created Sun Dec 22 02:10:23 2024 # Orbit generated from Bernstein formalism # Fitting 26 observations of 26 # Arc: 56.84d # First observation: 2015/05/17 # Last observation: 2015/07/13 Preliminary a, adot, b, bdot, g, gdot: -0.000006 0.050454 -0.000016 -0.005368 0.035683 0.000000 # Chi-squared of fit: 12.05 DOF: 46 RMS: 0.12 # Min/Max residuals: -0.33 0.24 # Exact a, adot, b, bdot, g, gdot: 2.000693E-05 4.389947E-02 -2.665133E-06 -7.320404E-03 3.468748E-02 -2.131379E-03 # Covariance matrix: 3.4542E-13 2.5370E-11 -1.7634E-14 5.3864E-12 7.7981E-12 3.7288E-10 2.5370E-11 3.4748E-08 -7.6730E-11 1.0027E-08 5.7806E-09 -6.1331E-07 -1.7634E-14 -7.6730E-11 2.9272E-13 -2.3391E-11 -1.2111E-11 1.5147E-09 5.3864E-12 1.0027E-08 -2.3391E-11 2.9289E-09 1.6331E-09 -1.8569E-07 7.7981E-12 5.7806E-09 -1.2111E-11 1.6331E-09 1.0182E-09 -8.8392E-08 3.7288E-10 -6.1331E-07 1.5147E-09 -1.8569E-07 -8.8392E-08 1.4150E-05 # lat0 lon0 xBary yBary zBary JD0 14.315478 -140.218756 -0.285367 0.239523 -0.938266 2457159.974389 # Heliocentric elements and errors Epoch: 2457150.5000 = 2015/05/08 Mean Anomaly: 354.00058 +/- 13.579 Argument of Peri: 134.37238 +/- 23.316 Long of Asc Node: 95.00731 +/- 0.232 Inclination: 16.81964 +/- 0.046 Eccentricity: 0.24871478 +/- 0.0269 Semi-Major Axis: 39.50297701 +/- 0.8049 Time of Perihelion: 2458661.7974 +/- 3420.3 Perihelion: 29.67800266 +/- 1.2224 Aphelion: 49.32795136 +/- 1.4625 Period (y) 248.2864 +/- 7.59 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X -22.03137721 +/- 0.0198 Ecliptic Y -18.71288461 +/- 0.0164 Ecliptic Z 7.12822775 +/- 0.0066 Ecliptic XDOT 0.00222972 +/- 0.0002 Ecliptic YDOT -0.00265602 +/- 0.0002 Ecliptic ZDOT -0.00060137 +/- 0.0001 # Distances at JD0 (AU) Heliocenter to KBO 29.77188712 +/- 0.0180 Geocenter to KBO 28.82884526 +/- 0.0265 # Hcoef: 9.67
The following table shows the complete astrometric record for 15KO166. 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 (15KO166) followed by the observatory code and reference code for the source of the astrometry.
2015 05 17.473611 14 47 26.434 -01 07 56.16 24.8g 15KO166 568 C~2TuP 2015 05 17.475730 14 47 26.418 -01 07 55.94 24.7g 15KO166 568 C~2TuP 2015 05 17.496936 14 47 26.293 -01 07 55.58 24.9g 15KO166 568 C~2TuP 2015 05 21.378768 14 47 02.790 -01 06 56.09 24.0i 15KO166 568 C~2TuP 2015 05 21.384867 14 47 02.753 -01 06 56.02 24.0i 15KO166 568 C~2TuP 2015 05 21.395625 14 47 02.685 -01 06 55.87 24.0i 15KO166 568 C~2TuP 2015 05 21.403709 14 47 02.638 -01 06 55.75 24.1i 15KO166 568 C~2TuP 2015 05 21.411781 14 47 02.587 -01 06 55.61 24.0i 15KO166 568 C~2TuP 2015 05 21.414478 14 47 02.571 -01 06 55.61 24.0i 15KO166 568 C~2TuP 2015 05 21.417166 14 47 02.557 -01 06 55.54 23.9i 15KO166 568 C~2TuP 2015 05 21.422549 14 47 02.519 -01 06 55.49 23.7i 15KO166 568 C~2TuP 2015 05 26.29897 14 46 33.81 -01 05 55.6 24.1y 15KO166 T09 C~8SVr 2015 05 26.34604 14 46 33.57 -01 05 54.9 23.7y 15KO166 T09 C~8SVr 2015 05 26.36079 14 46 33.46 -01 05 54.6 24.6y 15KO166 T09 C~8SVr 2015 05 26.44517 14 46 32.97 -01 05 53.7 24.2y 15KO166 T09 C~8SVr 2015 07 12.25545 14 43 28.02 -01 11 27.7 24.7z 15KO166 T09 C~8SVr 2015 07 12.27784 14 43 27.98 -01 11 28.4 24.8z 15KO166 T09 C~8SVs 2015 07 12.29403 14 43 27.95 -01 11 28.7 24.3z 15KO166 T09 C~8SVs 2015 07 12.31035 14 43 27.92 -01 11 29.4 24.2z 15KO166 T09 C~8SVs 2015 07 12.31304 14 43 27.91 -01 11 29.6 23.8z 15KO166 T09 C~8SVs 2015 07 12.33461 14 43 27.88 -01 11 29.7 24.5z 15KO166 T09 C~8SVs 2015 07 12.34809 14 43 27.87 -01 11 30.1 24.8z 15KO166 T09 C~8SVs 2015 07 13.28589 14 43 26.43 -01 11 53.9 24.6r 15KO166 T09 C~8SVs 2015 07 13.30229 14 43 26.39 -01 11 53.9 24.5r 15KO166 T09 C~8SVs 2015 07 13.31515 14 43 26.38 -01 11 54.6 24.8r 15KO166 T09 C~8SVs 2015 07 13.31727 14 43 26.38 -01 11 54.6 24.9r 15KO166 T09 C~8SVs
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 0.00 0.00 -0.14
2 0.0000 -0.30 -0.10 0.14 0.02
3 0.0001 -2.19 0.00 -0.09 0.06
4 0.0107 -355.98 0.04 -51.23 0.01
5 0.0107 -356.53 0.05 -51.33 -0.00
6 0.0107 -357.54 0.02 -51.50 -0.01
7 0.0108 -358.25 0.05 -51.60 0.00
8 0.0108 -359.02 0.02 -51.70 0.02
9 0.0108 -359.25 0.03 -51.78 -0.01
10 0.0108 -359.47 0.06 -51.77 0.03
11 0.0108 -360.03 -0.01 -51.90 -0.02
12 0.0242 -788.28 -0.23 -126.54 -0.29
13 0.0243 -791.92 0.24 -126.98 0.08
14 0.0243 -793.58 -0.14 -127.20 0.11
15 0.0246 -800.85 -0.04 -128.59 0.15
16 0.1527 -3339.69 0.07 -1295.32 0.18
17 0.1528 -3340.04 0.08 -1296.17 0.03
18 0.1528 -3340.38 0.02 -1296.59 0.12
19 0.1529 -3340.59 0.07 -1297.40 -0.18
20 0.1529 -3340.67 0.04 -1297.63 -0.33
21 0.1529 -3341.07 -0.01 -1297.87 0.12
22 0.1530 -3341.09 0.19 -1298.29 0.11
23 0.1555 -3354.37 -0.00 -1327.57 -0.13
24 0.1556 -3354.94 -0.33 -1327.75 0.21
25 0.1556 -3354.87 -0.07 -1328.46 -0.10
26 0.1556 -3354.87 -0.04 -1328.46 -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.
15KO166 quality flag:2 Type: 3:2E CENTAURR CENTAURR axisobj 39.077 42.540 38.648 ecceobj 0.241 0.351 0.233 incobj 16.815 16.922 16.890 qmin 27.838 27.419 29.646 qmax 51.734 59.521 48.588 amean 39.455 42.970 38.884 amin 39.012 41.779 38.648 amax 39.993 44.236 39.161 emean 0.245 0.340 0.237 emin 0.192 0.303 0.233 emax 0.294 0.361 0.241 imean 15.548 16.545 15.352 imin 13.144 15.379 15.324 imax 17.623 18.130 15.378 excite_mean 0.365 0.444 0.355 fracstop 1.000 0.022 0.000 cjmean 2.901 2.853 2.902 libcent 0 180.3 -180.0 -180.0 libamp 0 80.6 -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 92.9 112.5 140.6 kozaiamp 45.8 22.4 0.7