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: 15KK166 # Created Fri Jan 24 02:10:49 2025 # Orbit generated from Bernstein formalism # Fitting 21 observations of 21 # Arc: 56.91d # First observation: 2015/05/17 # Last observation: 2015/07/13 Preliminary a, adot, b, bdot, g, gdot: -0.000003 0.030939 -0.000009 0.002197 0.026782 0.000000 # Chi-squared of fit: 5.43 DOF: 36 RMS: 0.09 # Min/Max residuals: -0.18 0.26 # Exact a, adot, b, bdot, g, gdot: 1.629318E-05 2.668430E-02 6.775288E-07 1.083516E-03 2.612752E-02 2.488886E-04 # Covariance matrix: 3.9054E-13 3.2063E-11 -3.8538E-14 7.9476E-12 8.9174E-12 3.1944E-10 3.2063E-11 4.5709E-08 -8.9375E-11 1.1892E-08 7.4464E-09 -1.0075E-06 -3.8538E-14 -8.9375E-11 3.2301E-13 -2.4372E-11 -1.4147E-11 2.0946E-09 7.9476E-12 1.1892E-08 -2.4372E-11 3.1111E-09 1.9272E-09 -2.6534E-07 8.9174E-12 7.4464E-09 -1.4147E-11 1.9272E-09 1.2695E-09 -1.4748E-07 3.1944E-10 -1.0075E-06 2.0946E-09 -2.6534E-07 -1.4748E-07 2.7183E-05 # lat0 lon0 xBary yBary zBary JD0 14.592768 -139.900227 -0.278915 0.244534 -0.938897 2457159.910491 # Heliocentric elements and errors Epoch: 2457150.5000 = 2015/05/08 Mean Anomaly: 23.35241 +/- 223.181 Argument of Peri: 55.91823 +/- 245.896 Long of Asc Node: 139.37493 +/- 0.181 Inclination: 14.39915 +/- 0.006 Eccentricity: 0.04407155 +/- 0.0742 Semi-Major Axis: 40.85626143 +/- 0.3099 Time of Perihelion: 2450962.9947 +/- 59134.5 Perihelion: 39.05566264 +/- 3.0452 Aphelion: 42.65686022 +/- 3.0480 Period (y) 261.1537 +/- 2.97 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X -28.89752427 +/- 0.0386 Ecliptic Y -24.69635856 +/- 0.0325 Ecliptic Z 9.64306356 +/- 0.0132 Ecliptic XDOT 0.00180083 +/- 0.0004 Ecliptic YDOT -0.00214283 +/- 0.0003 Ecliptic ZDOT 0.00011652 +/- 0.0001 # Distances at JD0 (AU) Heliocenter to KBO 39.21690592 +/- 0.0352 Geocenter to KBO 38.27382162 +/- 0.0522 # Hcoef: 7.88
The following table shows the complete astrometric record for 15KK166. 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 (15KK166) followed by the observatory code and reference code for the source of the astrometry.
2015 05 17.409713 14 48 57.248 -00 57 44.20 24.3g 15KK166 568 C~2TuP 2015 05 17.473611 14 48 56.935 -00 57 43.16 24.1g 15KK166 568 C~2TuP 2015 05 17.475730 14 48 56.930 -00 57 43.08 24.0g 15KK166 568 C~2TuP 2015 05 21.378768 14 48 38.486 -00 56 40.06 23.4i 15KK166 568 C~2TuP 2015 05 21.384867 14 48 38.458 -00 56 39.98 23.3i 15KK166 568 C~2TuP 2015 05 21.387551 14 48 38.442 -00 56 39.91 23.3i 15KK166 568 C~2TuP 2015 05 21.395625 14 48 38.405 -00 56 39.83 23.5i 15KK166 568 C~2TuP 2015 05 21.403709 14 48 38.367 -00 56 39.68 23.3i 15KK166 568 C~2TuP 2015 05 26.36079 14 48 15.56 -00 55 31.1 23.1y 15KK166 T09 C~8SVr 2015 05 26.42612 14 48 15.25 -00 55 30.5 23.7y 15KK166 T09 C~8SVr 2015 05 26.43645 14 48 15.20 -00 55 30.1 23.2y 15KK166 T09 C~8SVr 2015 05 26.46546 14 48 15.08 -00 55 29.8 24.4y 15KK166 T09 C~8SVr 2015 07 12.27784 14 45 46.71 -00 56 17.2 23.8z 15KK166 T09 C~8SVr 2015 07 12.29403 14 45 46.68 -00 56 17.5 23.7z 15KK166 T09 C~8SVr 2015 07 12.29672 14 45 46.69 -00 56 17.4 24.1z 15KK166 T09 C~8SVr 2015 07 12.31304 14 45 46.67 -00 56 17.9 23.4z 15KK166 T09 C~8SVr 2015 07 12.33461 14 45 46.62 -00 56 17.9 23.4z 15KK166 T09 C~8SVr 2015 07 12.35079 14 45 46.59 -00 56 18.4 23.6z 15KK166 T09 C~8SVr 2015 07 13.28875 14 45 45.32 -00 56 32.2 24.3r 15KK166 T09 C~8SVr 2015 07 13.30229 14 45 45.31 -00 56 32.3 24.3r 15KK166 T09 C~8SVr 2015 07 13.31727 14 45 45.30 -00 56 32.5 24.3r 15KK166 T09 C~8SVr
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 -0.00
2 0.0002 -4.79 -0.05 -0.44 -0.07
3 0.0002 -4.88 0.01 -0.38 -0.00
4 0.0109 -287.56 0.03 -24.54 0.02
5 0.0109 -287.99 0.05 -24.59 0.01
6 0.0109 -288.24 -0.00 -24.59 0.03
7 0.0109 -288.79 0.03 -24.69 -0.01
8 0.0109 -289.38 0.03 -24.72 0.02
9 0.0245 -636.09 0.03 -63.50 0.06
10 0.0247 -640.70 -0.03 -64.34 -0.18
11 0.0247 -641.53 -0.15 -64.19 0.06
12 0.0248 -643.34 0.06 -64.45 0.06
13 0.1530 -2748.70 0.03 -787.12 0.01
14 0.1530 -2749.04 -0.04 -787.54 -0.08
15 0.1530 -2748.93 0.12 -787.40 0.12
16 0.1531 -2749.06 0.26 -787.97 -0.12
17 0.1531 -2749.78 -0.09 -788.20 0.10
18 0.1532 -2750.05 -0.10 -788.81 -0.18
19 0.1557 -2764.00 -0.17 -807.76 -0.07
20 0.1558 -2764.11 -0.07 -807.90 0.07
21 0.1558 -2764.19 0.07 -808.14 0.14
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.
15KK166 quality flag:1 Type: CLASSICAL CENTAURR CLASSICAL axisobj 40.479 57.194 39.946 ecceobj 0.035 0.530 0.024 incobj 14.413 14.424 14.392 qmin 38.309 26.597 37.855 qmax 43.377 89.945 42.739 amean 40.758 57.137 40.217 amin 40.449 54.704 39.920 amax 41.079 58.673 40.521 emean 0.036 0.522 0.027 emin 0.018 0.492 0.003 emax 0.056 0.537 0.055 imean 13.388 13.773 13.391 imin 12.446 12.881 12.184 imax 14.672 15.425 15.049 excite_mean 0.234 0.574 0.233 fracstop 1.000 0.059 1.000 cjmean 3.002 2.815 2.997 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 178.8 189.2 178.5 kozaiamp 180.0 21.3 180.0