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: 15KP166 # Created Mon Apr 28 01:10:28 2025 # Orbit generated from Bernstein formalism # Fitting 26 observations of 26 # Arc: 1.30y # First observation: 2014/03/25 # Last observation: 2015/07/12 Preliminary a, adot, b, bdot, g, gdot: 0.000128 0.157357 -0.000088 0.007696 0.084498 0.000000 # Chi-squared of fit: 7.93 DOF: 46 RMS: 0.10 # Min/Max residuals: -0.20 0.31 # Exact a, adot, b, bdot, g, gdot: 3.175101E-05 1.591355E-01 1.282747E-06 7.484990E-03 7.996431E-02 5.956454E-02 # Covariance matrix: 1.8147E-13 3.5788E-12 -1.3590E-15 1.7701E-13 1.5814E-12 2.3706E-11 3.5788E-12 7.5619E-10 -3.0441E-13 3.6032E-11 3.2365E-10 4.8070E-09 -1.3590E-15 -3.0441E-13 1.6338E-13 -1.5028E-13 -1.4015E-13 -1.8373E-12 1.7701E-13 3.6032E-11 -1.5028E-13 1.8992E-12 1.5428E-11 2.2909E-10 1.5814E-12 3.2365E-10 -1.4015E-13 1.5428E-11 1.3919E-10 2.0516E-09 2.3706E-11 4.8070E-09 -1.8373E-12 2.2909E-10 2.0516E-09 3.0628E-08 # lat0 lon0 xBary yBary zBary JD0 14.090365 -146.194779 0.483845 0.212029 -0.844410 2456742.057728 # Heliocentric elements and errors Epoch: 2456740.5000 = 2014/03/24 Mean Anomaly: 11.36364 +/- 0.032 Argument of Peri: 25.00922 +/- 0.089 Long of Asc Node: 136.55671 +/- 0.004 Inclination: 13.61304 +/- 0.000 Eccentricity: 0.59558039 +/- 0.0011 Semi-Major Axis: 28.54900232 +/- 0.0518 Time of Perihelion: 2454981.7681 +/- 1.1 Perihelion: 11.54577650 +/- 0.0368 Aphelion: 45.55222815 +/- 0.0880 Period (y) 152.5438 +/- 0.42 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X -11.07254330 +/- 0.0015 Ecliptic Y -6.82903661 +/- 0.0010 Ecliptic Z 3.04455011 +/- 0.0004 Ecliptic XDOT 0.00143404 +/- 0.0000 Ecliptic YDOT -0.00559637 +/- 0.0000 Ecliptic ZDOT 0.00074519 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 13.36062280 +/- 0.0013 Geocenter to KBO 12.50557869 +/- 0.0018 # Hcoef: 12.27
The following table shows the complete astrometric record for 15KP166. 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 (15KP166) followed by the observatory code and reference code for the source of the astrometry.
2014 03 25.55695 14 25 11.17 +00 29 56.5 23.4y 15KP166 T09 C~8ncL 2014 03 25.58356 14 25 10.93 +00 29 59.0 23.1y 15KP166 T09 C~8ncL 2014 03 25.60988 14 25 10.68 +00 30 01.0 23.3y 15KP166 T09 C~8ncL 2014 03 25.61968 14 25 10.58 +00 30 02.0 23.1y 15KP166 T09 C~8ncL 2014 03 25.62569 14 25 10.53 +00 30 02.5 23.4y 15KP166 T09 C~8ncL 2014 03 28.53200 14 24 43.70 +00 34 18.9 23.5i 15KP166 T09 C~8ncL 2014 03 28.55746 14 24 43.47 +00 34 20.9 23.6i 15KP166 T09 C~8ncL 2014 03 28.58727 14 24 43.17 +00 34 23.9 23.5i 15KP166 T09 C~8ncL 2014 03 28.59923 14 24 43.05 +00 34 24.8 23.6i 15KP166 T09 C~8ncL 2015 05 17.409713 14 48 56.310 -01 00 34.44 24.2g 15KP166 568 C~2TuP 2015 05 17.473611 14 48 55.563 -01 00 31.99 24.3g 15KP166 568 C~2TuP 2015 05 17.475730 14 48 55.541 -01 00 31.99 24.3g 15KP166 568 C~2TuP 2015 05 17.482101 14 48 55.457 -01 00 31.60 24.2g 15KP166 568 C~2TuP 2015 05 17.496936 14 48 55.293 -01 00 31.16 24.2g 15KP166 568 C~2TuP 2015 05 21.378768 14 48 11.714 -00 58 15.55 23.5i 15KP166 568 C~2TuP 2015 05 21.395625 14 48 11.525 -00 58 15.03 23.7i 15KP166 568 C~2TuP 2015 05 21.403709 14 48 11.431 -00 58 14.75 23.5i 15KP166 568 C~2TuP 2015 05 21.422549 14 48 11.218 -00 58 14.18 23.5i 15KP166 568 C~2TuP 2015 05 26.29897 14 47 18.41 -00 55 56.6 23.1y 15KP166 T09 C~8WiZ 2015 05 26.36079 14 47 17.75 -00 55 54.9 23.2y 15KP166 T09 C~8WiZ 2015 07 12.25545 14 42 13.41 -01 06 44.8 24.4z 15KP166 T09 C~8WiZ 2015 07 12.29403 14 42 13.36 -01 06 46.8 23.7z 15KP166 T09 C~8WiZ 2015 07 12.31035 14 42 13.32 -01 06 47.7 24.0z 15KP166 T09 C~8WiZ 2015 07 12.33192 14 42 13.28 -01 06 48.8 23.8z 15KP166 T09 C~8WiZ 2015 07 12.33461 14 42 13.28 -01 06 48.8 23.7z 15KP166 T09 C~8WiZ 2015 07 12.34809 14 42 13.27 -01 06 49.5 23.5z 15KP166 T09 C~8WiZ
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 -0.06 0.00 0.04
2 0.0001 -4.22 -0.02 1.17 0.21
3 0.0001 -8.42 -0.02 1.82 -0.14
4 0.0002 -10.17 -0.20 2.27 -0.06
5 0.0002 -11.04 -0.11 2.49 -0.06
6 0.0081 -475.61 -0.03 111.46 -0.01
7 0.0082 -479.52 0.31 112.21 -0.14
8 0.0083 -484.76 0.06 113.55 0.17
9 0.0083 -486.76 0.06 113.81 0.01
10 1.1440 22054.02 0.01 1947.36 0.02
11 1.1442 22042.50 -0.05 1945.96 0.03
12 1.1442 22042.19 0.01 1945.85 -0.03
13 1.1442 22040.86 -0.18 1945.80 0.06
14 1.1443 22038.36 -0.03 1945.40 -0.02
15 1.1549 21369.25 0.08 1856.83 -0.03
16 1.1549 21366.37 0.12 1856.38 -0.04
17 1.1550 21364.93 0.08 1856.18 -0.03
18 1.1550 21361.69 0.09 1855.66 -0.06
19 1.1684 20560.40 -0.02 1722.98 -0.16
20 1.1685 20550.39 0.04 1721.31 0.07
21 1.2969 16423.19 -0.02 -408.38 0.07
22 1.2970 16423.14 0.15 -410.52 0.09
23 1.2971 16422.87 -0.04 -411.57 -0.05
24 1.2971 16422.67 -0.13 -412.81 -0.09
25 1.2971 16422.67 -0.12 -412.81 0.06
26 1.2972 16422.76 0.03 -413.52 0.10
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.
15KP166 quality flag:3 Type: CENTAURR CENTAURR CENTAURR axisobj 28.178 29.011 27.392 ecceobj 0.588 0.599 0.578 incobj 13.643 13.647 13.639 qmin 11.410 11.465 11.314 qmax 48.652 49.760 44.028 amean 28.800 29.428 26.728 amin 27.468 28.163 25.588 amax 30.142 30.758 27.771 emean 0.597 0.600 0.566 emin 0.575 0.585 0.542 emax 0.614 0.622 0.585 imean 12.044 12.002 12.299 imin 11.610 11.658 11.728 imax 12.420 12.490 12.984 excite_mean 0.633 0.635 0.605 fracstop 0.005 0.009 0.007 cjmean 2.580 2.570 2.645 libcent 0 -180.0 -180.0 -180.0 libamp 0 -180.0 -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 58.1 74.8 74.6 kozaiamp 32.5 49.5 52.6