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: 17BD232 # Created Fri Nov 1 01:10:29 2024 # Orbit generated from Bernstein formalism # Fitting 26 observations of 26 # Arc: 3.00y # First observation: 2016/04/02 # Last observation: 2019/04/03 Preliminary a, adot, b, bdot, g, gdot: -0.000069 0.023554 0.000002 -0.000579 0.023480 0.000000 # Chi-squared of fit: 30.40 DOF: 46 RMS: 0.19 # Min/Max residuals: -0.55 0.48 # Exact a, adot, b, bdot, g, gdot: 1.516769E-05 2.345070E-02 6.188354E-08 -5.784557E-04 2.387030E-02 -8.039707E-04 # Covariance matrix: 2.2695E-13 -7.2057E-13 -1.5472E-15 1.3610E-14 8.3188E-14 -9.1115E-12 -7.2057E-13 3.3687E-12 8.2172E-15 -6.8646E-14 -3.8522E-13 4.5914E-11 -1.5472E-15 8.2172E-15 9.8488E-14 -7.8242E-14 8.7921E-16 1.3171E-13 1.3610E-14 -6.8646E-14 -7.8242E-14 1.4981E-13 6.4768E-15 -9.9228E-13 8.3188E-14 -3.8522E-13 8.7921E-16 6.4768E-15 1.7378E-13 -4.4946E-12 -9.1115E-12 4.5914E-11 1.3171E-13 -9.9228E-13 -4.4946E-12 6.6242E-10 # lat0 lon0 xBary yBary zBary JD0 1.921543 -175.106562 -0.136567 0.033208 -0.985644 2457480.890761 # Heliocentric elements and errors Epoch: 2457480.5000 = 2016/04/02 Mean Anomaly: 332.91688 +/- 0.841 Argument of Peri: 157.68426 +/- 0.974 Long of Asc Node: 58.02131 +/- 0.018 Inclination: 2.35183 +/- 0.001 Eccentricity: 0.06360404 +/- 0.0004 Semi-Major Axis: 45.41308057 +/- 0.0068 Time of Perihelion: 2465889.9190 +/- 261.2 Perihelion: 42.52462511 +/- 0.0210 Aphelion: 48.30153603 +/- 0.0213 Period (y) 306.0410 +/- 0.07 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X -42.69156276 +/- 0.0007 Ecliptic Y -3.79445992 +/- 0.0001 Ecliptic Z 1.40473994 +/- 0.0000 Ecliptic XDOT 0.00031916 +/- 0.0000 Ecliptic YDOT -0.00267923 +/- 0.0000 Ecliptic ZDOT -0.00006939 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 42.88287247 +/- 0.0007 Geocenter to KBO 41.89305612 +/- 0.0007 # Hcoef: 8.97
The following table shows the complete astrometric record for 17BD232. 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 (17BD232) followed by the observatory code and reference code for the source of the astrometry.
2016 04 02.389972 12 21 00.78 -00 10 49.4 17BD232 T09 C~81Bn 2016 04 02.41732 12 21 00.65 -00 10 48.4 25.0i 17BD232 T09 C~8COq 2016 04 02.44189 12 21 00.57 -00 10 48.1 24.7i 17BD232 T09 C~8COq 2016 04 02.466322 12 21 00.44 -00 10 47.3 17BD232 T09 C~81Bn 2016 04 02.50172 12 21 00.26 -00 10 45.6 25.2i 17BD232 T09 C~8COq 2016 04 02.515196 12 21 00.23 -00 10 45.9 17BD232 T09 C~81Bn 2016 06 04.25196 12 17 47.82 +00 07 47.1 24.3z 17BD232 T09 C~8COq 2016 06 04.27037 12 17 47.79 +00 07 47.1 24.9z 17BD232 T09 C~8COq 2016 06 04.28656 12 17 47.77 +00 07 47.5 24.6z 17BD232 T09 C~8COq 2016 06 04.28926 12 17 47.78 +00 07 47.8 25.3z 17BD232 T09 C~8COq 2016 06 04.30544 12 17 47.72 +00 07 47.6 25.2z 17BD232 T09 C~8COq 2016 06 04.32707 12 17 47.70 +00 07 47.5 24.3z 17BD232 T09 C~8COq 2016 06 05.311488 12 17 46.73 +00 07 50.8 17BD232 T09 C~81Bn 2016 06 05.339160 12 17 46.71 +00 07 50.8 17BD232 T09 C~81Bn 2017 01 23.60759 12 29 52.30 -01 11 25.1 24.9i 17BD232 T09 C~7xTo 2017 01 23.61026 12 29 52.28 -01 11 24.9 25.2i 17BD232 T09 C~7xTo 2017 01 23.64653 12 29 52.23 -01 11 24.4 25.5i 17BD232 T09 C~7xTo 2017 01 28.59194 12 29 44.24 -01 10 21.5 24.9z 17BD232 T09 C~7xTo 2017 01 28.59808 12 29 44.21 -01 10 21.7 25.3z 17BD232 T09 C~7xTo 2017 01 28.61959 12 29 44.19 -01 10 21.1 24.9z 17BD232 T09 C~7xTo 2017 01 28.65069 12 29 44.12 -01 10 21.0 25.1z 17BD232 T09 C~7xTo 2017 02 02.636127 12 29 34.05 -01 09 05.4 17BD232 T09 C~81Bn 2017 02 23.52167 12 28 33.04 -01 01 56.2 26.2r 17BD232 T09 C~7xTo 2017 02 23.59538 12 28 32.74 -01 01 54.4 26.1r 17BD232 T09 C~7xTo 2017 02 23.59748 12 28 32.75 -01 01 54.6 26.2r 17BD232 T09 C~7xTo 2019 04 03.440043 12 35 42.46 -01 52 21.0 17BD232 T09 C~81Bn
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 0.08 0.00 -0.09 2 0.0001 -2.19 -0.14 0.15 0.09 3 0.0001 -3.41 0.40 -0.05 -0.09 4 0.0002 -5.51 0.05 -0.09 -0.10 5 0.0003 -8.67 -0.55 0.40 0.43 6 0.0003 -8.96 0.12 -0.06 -0.00 7 0.1721 -3100.10 0.26 -122.10 -0.05 8 0.1722 -3100.52 0.16 -122.28 -0.17 9 0.1722 -3100.95 0.00 -122.03 0.14 10 0.1722 -3100.93 0.07 -121.70 0.48 11 0.1723 -3101.68 -0.40 -122.24 -0.01 12 0.1723 -3101.92 -0.27 -122.45 -0.15 13 0.1750 -3116.59 0.04 -125.19 -0.08 14 0.1751 -3116.86 0.20 -125.31 -0.11 15 0.8110 8765.45 0.14 -180.02 -0.13 16 0.8110 8765.10 -0.14 -179.95 -0.07 17 0.8111 8764.21 -0.12 -179.79 0.04 18 0.8246 8629.03 0.06 -169.46 0.16 19 0.8247 8628.70 -0.08 -169.82 -0.21 20 0.8247 8628.18 0.09 -169.39 0.19 21 0.8248 8627.18 0.07 -169.71 -0.19 22 0.8385 8458.28 0.15 -160.07 -0.17 23 0.8956 7446.63 0.13 -128.22 0.15 24 0.8958 7441.78 -0.32 -128.35 -0.03 25 0.8958 7442.00 0.02 -128.47 -0.15 26 3.0008 14578.12 0.00 -358.91 0.11
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.
17BD232 quality flag:3 Type: CLASSICAL CLASSICAL CLASSICAL axisobj 44.913 44.953 44.874 ecceobj 0.054 0.053 0.055 incobj 2.355 2.355 2.355 qmin 41.930 42.006 41.799 qmax 48.604 48.595 48.645 amean 45.145 45.188 45.109 amin 44.792 44.824 44.745 amax 45.514 45.551 45.485 emean 0.054 0.053 0.055 emin 0.040 0.040 0.042 emax 0.068 0.067 0.069 imean 1.398 1.402 1.392 imin 0.901 0.909 0.887 imax 1.829 1.830 1.828 excite_mean 0.059 0.059 0.061 fracstop 1.000 1.000 1.000 cjmean 3.111 3.112 3.111 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 198.9 201.0 194.3 kozaiamp 180.0 180.0 180.0