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: 17BZ232 # Created Tue Apr 1 01:11:01 2025 # Orbit generated from Bernstein formalism # Fitting 32 observations of 32 # Arc: 0.92y # First observation: 2016/04/02 # Last observation: 2017/03/04 Preliminary a, adot, b, bdot, g, gdot: -0.000003 0.020978 -0.000002 0.019572 0.024671 0.000000 # Chi-squared of fit: 15.29 DOF: 58 RMS: 0.12 # Min/Max residuals: -0.28 0.36 # Exact a, adot, b, bdot, g, gdot: 1.281037E-05 2.072592E-02 1.278113E-05 1.956217E-02 2.485700E-02 4.526222E-03 # Covariance matrix: 1.1384E-13 3.4349E-14 -1.0751E-15 1.0539E-13 8.2028E-14 6.6001E-12 3.4349E-14 3.3434E-11 -2.4385E-13 2.2626E-11 2.0234E-11 1.4061E-09 -1.0751E-15 -2.4385E-13 1.1438E-13 -3.0656E-13 -1.5738E-13 -1.0584E-11 1.0539E-13 2.2626E-11 -3.0656E-13 1.5975E-11 1.4330E-11 9.7432E-10 8.2028E-14 2.0234E-11 -1.5738E-13 1.4330E-11 1.3406E-11 8.8809E-10 6.6001E-12 1.4061E-09 -1.0584E-11 9.7432E-10 8.8809E-10 6.0479E-08 # lat0 lon0 xBary yBary zBary JD0 -14.831923 145.346058 -0.732462 -0.172472 -0.651883 2457480.826409 # Heliocentric elements and errors Epoch: 2457480.5000 = 2016/04/02 Mean Anomaly: 12.51695 +/- 0.435 Argument of Peri: 305.89662 +/- 1.324 Long of Asc Node: 161.21621 +/- 0.001 Inclination: 45.52447 +/- 0.003 Eccentricity: 0.42830304 +/- 0.0062 Semi-Major Axis: 67.97563079 +/- 0.4150 Time of Perihelion: 2450363.0518 +/- 238.7 Perihelion: 38.86146122 +/- 0.4818 Aphelion: 97.08980035 +/- 0.7261 Period (y) 560.4515 +/- 5.13 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X -32.96606555 +/- 0.0047 Ecliptic Y 21.89190313 +/- 0.0033 Ecliptic Z -10.29776907 +/- 0.0015 Ecliptic XDOT -0.00214810 +/- 0.0000 Ecliptic YDOT -0.00129719 +/- 0.0000 Ecliptic ZDOT 0.00195526 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 40.89084187 +/- 0.0042 Geocenter to KBO 40.23011913 +/- 0.0059 # Hcoef: 8.47
The following table shows the complete astrometric record for 17BZ232. 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 (17BZ232) followed by the observatory code and reference code for the source of the astrometry.
2016 04 02.325620 09 30 44.01 -00 55 44.5 17BZ232 T14 C~86uj 2016 04 02.32563 09 30 44.02 -00 55 44.1 24.5i 17BZ232 T09 C~8COq 2016 04 02.33644 09 30 43.97 -00 55 43.8 24.2i 17BZ232 T09 C~8COq 2016 04 02.34452 09 30 43.96 -00 55 43.6 24.6i 17BZ232 T09 C~8COq 2016 04 02.36045 09 30 43.92 -00 55 43.0 24.5i 17BZ232 T09 C~8COq 2016 04 02.368517 09 30 43.90 -00 55 42.7 17BZ232 T14 C~86uj 2016 04 02.36853 09 30 43.90 -00 55 42.6 24.6i 17BZ232 T09 C~8COq 2016 04 04.238296 09 30 39.39 -00 54 24.5 17BZ232 T14 C~86uj 2016 04 04.23841 09 30 39.39 -00 54 24.4 25.2g 17BZ232 T09 C~8COq 2016 04 04.25118 09 30 39.36 -00 54 23.9 25.0g 17BZ232 T09 C~8COq 2016 04 04.26178 09 30 39.32 -00 54 23.4 25.4g 17BZ232 T09 C~8COq 2016 04 04.274461 09 30 39.30 -00 54 23.1 17BZ232 T14 C~86uj 2016 04 04.27447 09 30 39.29 -00 54 23.0 25.4g 17BZ232 T09 C~8COq 2016 12 25.46239 09 43 09.83 -01 07 01.1 24.3r 17BZ232 T09 C~7xTq 2016 12 25.47707 09 43 09.80 -01 07 01.1 24.6r 17BZ232 T09 C~7xTq 2016 12 25.48752 09 43 09.76 -01 07 00.9 24.5r 17BZ232 T09 C~7xTq 2016 12 25.50008 09 43 09.73 -01 07 01.1 24.7r 17BZ232 T09 C~7xTq 2017 01 21.37468 09 41 33.97 -00 59 46.5 23.8z 17BZ232 T09 C~7xTq 2017 01 21.40956 09 41 33.84 -00 59 45.8 24.3z 17BZ232 T09 C~7xTq 2017 01 21.61374 09 41 32.94 -00 59 40.4 24.5z 17BZ232 T09 C~7xTq 2017 01 21.62179 09 41 32.91 -00 59 40.4 24.1z 17BZ232 T09 C~7xTq 2017 01 21.62985 09 41 32.89 -00 59 40.1 24.5z 17BZ232 T09 C~7xTq 2017 01 21.64058 09 41 32.84 -00 59 39.9 24.2z 17BZ232 T09 C~7xTq 2017 01 28.41254 09 41 03.12 -00 56 41.5 25.4g 17BZ232 T09 C~7xTq 2017 01 28.41954 09 41 03.08 -00 56 41.7 25.4g 17BZ232 T09 C~7xTq 2017 01 28.43816 09 41 03.00 -00 56 40.7 25.0g 17BZ232 T09 C~7xTq 2017 01 28.45084 09 41 02.94 -00 56 40.7 25.2g 17BZ232 T09 C~7xTq 2017 03 04.40261 09 38 23.17 -00 36 01.9 23.9i 17BZ232 T09 C~7xTq 2017 03 04.41889 09 38 23.09 -00 36 01.1 24.1i 17BZ232 T09 C~7xTq 2017 03 04.42698 09 38 23.07 -00 36 00.9 24.3i 17BZ232 T09 C~7xTq 2017 03 04.42965 09 38 23.05 -00 36 00.9 24.3i 17BZ232 T09 C~7xTq 2017 03 04.43238 09 38 23.04 -00 36 00.6 24.3i 17BZ232 T09 C~7xTq
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 -0.07
2 0.0000 0.01 0.09 0.43 0.36
3 0.0000 -0.80 -0.18 0.47 0.10
4 0.0001 -1.00 0.02 0.61 0.03
5 0.0001 -1.77 0.06 0.98 -0.03
6 0.0001 -2.15 0.08 1.16 -0.07
7 0.0001 -2.18 0.05 1.26 0.03
8 0.0052 -91.66 0.04 52.92 -0.06
9 0.0052 -91.69 0.01 53.01 0.04
10 0.0053 -92.28 0.03 53.34 0.01
11 0.0053 -93.01 -0.19 53.61 -0.01
12 0.0053 -93.39 0.04 53.80 -0.17
13 0.0053 -93.56 -0.14 53.85 -0.12
14 0.7314 10803.06 -0.03 3019.08 0.07
15 0.7314 10802.63 0.15 3018.93 0.01
16 0.7314 10802.00 -0.05 3018.92 0.07
17 0.7315 10801.64 0.12 3018.59 -0.19
18 0.8051 9298.54 -0.23 2959.97 -0.25
19 0.8052 9296.47 0.12 2960.00 -0.28
20 0.8057 9281.92 -0.19 2960.69 0.06
21 0.8057 9281.49 -0.05 2960.54 -0.10
22 0.8058 9281.11 0.12 2960.73 0.07
23 0.8058 9280.33 0.09 2960.67 -0.01
24 0.8243 8799.81 -0.03 2983.62 0.24
25 0.8244 8799.31 -0.02 2983.24 -0.17
26 0.8244 8797.84 -0.10 2983.79 0.31
27 0.8244 8796.99 -0.01 2983.50 -0.04
28 0.9201 6123.70 0.05 3371.04 0.01
29 0.9202 6122.30 -0.13 3371.41 0.10
30 0.9202 6121.95 0.13 3371.50 0.05
31 0.9202 6121.67 0.05 3371.40 -0.09
32 0.9202 6121.43 0.02 3371.63 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.
17BZ232 quality flag:3 Type: SCATNEAR SCATNEAR SCATNEAR axisobj 68.047 69.551 66.753 ecceobj 0.430 0.449 0.411 incobj 45.643 45.650 45.637 qmin 38.017 37.424 38.352 qmax 98.455 101.755 95.518 amean 67.564 69.001 66.330 amin 66.822 68.207 65.618 amax 68.568 70.067 67.300 emean 0.416 0.434 0.400 emin 0.403 0.418 0.387 emax 0.436 0.455 0.420 imean 44.932 45.018 44.854 imin 44.411 44.374 44.325 imax 45.392 45.557 45.306 excite_mean 0.820 0.830 0.811 fracstop 1.000 1.000 1.000 cjmean 2.374 2.365 2.382 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 169.0 168.8 160.2 kozaiamp 180.0 180.0 180.0