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: 17BO236 # Created Sun Dec 22 02:10:55 2024 # Orbit generated from Bernstein formalism # Fitting 23 observations of 24 # Arc: 1.22y # First observation: 2017/01/21 # Last observation: 2018/04/13 Preliminary a, adot, b, bdot, g, gdot: -0.000008 0.018689 -0.000002 -0.009931 0.023139 0.000000 # Chi-squared of fit: 13.40 DOF: 40 RMS: 0.13 # Min/Max residuals: -0.38 0.26 # Exact a, adot, b, bdot, g, gdot: 1.341481E-05 1.869712E-02 -6.642982E-06 -9.971854E-03 2.316967E-02 1.183108E-03 # Covariance matrix: 1.2145E-13 5.4597E-14 4.9838E-15 -1.0983E-13 2.0602E-13 9.7465E-12 5.4597E-14 1.0168E-12 2.4948E-14 -5.7995E-13 8.8152E-13 5.2014E-11 4.9838E-15 2.4948E-14 8.8188E-14 -1.1085E-13 3.0957E-14 1.9924E-12 -1.0983E-13 -5.7995E-13 -1.1085E-13 8.7023E-13 -6.8913E-13 -4.8153E-11 2.0602E-13 8.8152E-13 3.0957E-14 -6.8913E-13 1.2452E-12 6.1282E-11 9.7465E-12 5.2014E-11 1.9924E-12 -4.8153E-11 6.1282E-11 4.3504E-09 # lat0 lon0 xBary yBary zBary JD0 -10.334501 151.337968 0.496506 -0.152627 -0.838011 2457774.982951 # Heliocentric elements and errors Epoch: 2457770.5000 = 2017/01/17 Mean Anomaly: 143.39397 +/- 1.924 Argument of Peri: 52.60675 +/- 1.916 Long of Asc Node: 312.48786 +/- 0.001 Inclination: 29.78256 +/- 0.002 Eccentricity: 0.07454895 +/- 0.0015 Semi-Major Axis: 41.44601325 +/- 0.0104 Time of Perihelion: 2418950.9098 +/- 520.6 Perihelion: 38.35625661 +/- 0.0627 Aphelion: 44.53576989 +/- 0.0630 Period (y) 266.8286 +/- 0.10 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X -37.76970795 +/- 0.0018 Ecliptic Y 21.20508143 +/- 0.0010 Ecliptic Z -7.74296230 +/- 0.0004 Ecliptic XDOT -0.00099209 +/- 0.0000 Ecliptic YDOT -0.00198075 +/- 0.0000 Ecliptic ZDOT -0.00118435 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 44.00181567 +/- 0.0016 Geocenter to KBO 43.15987893 +/- 0.0021 # Hcoef: 9.13
The following table shows the complete astrometric record for 17BO236. 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 (17BO236) followed by the observatory code and reference code for the source of the astrometry.
2017 01 21.48215 09 58 49.75 +01 19 26.0 24.9z 17BO236 T09 C~81Bo 2017 01 21.50822 09 58 49.65 +01 19 26.1 25.0z 17BO236 T09 C~81Bo 2017 01 21.55646 09 58 49.47 +01 19 27.0 25.3z 17BO236 T09 C~81Bo 2017 01 23.36023 09 58 41.88 +01 19 44.1 26.2r 17BO236 T09 C~81Bo 2017 01 23.39391 09 58 41.76 +01 19 44.3 25.1r 17BO236 T09 C~81Bo 2017 01 23.40775 09 58 41.68 +01 19 44.6 25.3r 17BO236 T09 C~81Bo 2017 01 23.51704 09 58 41.21 +01 19 45.6 26.2i 17BO236 T09 C~81Bo 2017 01 23.55808 09 58 41.04 +01 19 46.1 25.6i 17BO236 T09 C~81Bo 2017 01 23.58838 09 58 40.91 +01 19 46.3 25.9i 17BO236 T09 C~81Bo 2017 01 30.41352 09 58 11.17 +01 21 05.6 24.9i 17BO236 T09 C~81Bo 2017 01 30.43553 09 58 11.05 +01 21 05.9 25.7i 17BO236 T09 C~81Bo 2017 01 30.45764 09 58 10.95 +01 21 06.1 25.6i 17BO236 T09 C~81Bo 2017 01 30.50184 09 58 10.76 +01 21 06.9 25.2z 17BO236 T09 C~81Bo 2017 01 30.52778 09 58 10.63 +01 21 07.4 24.5z 17BO236 T09 C~81Bo 2017 01 30.56478 09 58 10.48 +01 21 07.6 24.6z 17BO236 T09 C~81Bo 2017 01 30.61243 09 58 10.27 +01 21 08.3 25.1z 17BO236 T09 C~81Bo 2017 03 22.283805 09 54 24.58 +01 37 58.9 17BO236 T09 C~83Eq 2017 03 22.335263 09 54 24.39 +01 38 00.5 17BO236 T09 C~83Eq 2017 03 22.350068 09 54 24.31 +01 38 00.7 17BO236 T09 C~83Eq 2018 01 17.48065 10 02 20.00 +00 24 19.4 25.2i 17BO236 T09 C~83Eq 2018 01 17.50762 10 02 19.87 +00 24 19.6 25.7i 17BO236 T09 C~83Eq 2018 01 17.53731 10 02 19.77 +00 24 19.9 26.0i 17BO236 T09 C~83Eq 2018 04 13.358265 09 56 29.86 +00 51 27.0 17BO236 T09 C~83Eq 2018 04 13.369037 09 56 29.84 +00 51 27.1 17BO236 T09 C~83Eq
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 -0.14 0.00 -0.03
2 0.0001 -1.44 0.06 -0.43 -0.11
3 0.0002 -4.28 ( 0.24) -0.53 ( 0.45)
4 0.0051 -116.91 -0.21 -24.24 0.07
5 0.0052 -118.67 0.18 -24.68 0.07
6 0.0053 -119.90 -0.17 -24.82 0.11
7 0.0056 -126.85 -0.12 -26.34 0.02
8 0.0057 -129.41 -0.05 -26.77 0.14
9 0.0058 -131.31 -0.00 -27.26 0.04
10 0.0245 -576.92 0.23 -108.63 -0.00
11 0.0245 -578.71 -0.06 -108.98 -0.09
12 0.0246 -580.18 -0.02 -109.32 -0.18
13 0.0247 -583.13 0.06 -109.56 0.09
14 0.0248 -585.13 -0.16 -109.77 0.17
15 0.0249 -587.31 0.19 -110.37 0.00
16 0.0250 -590.51 0.26 -110.82 0.10
17 0.1637 -4115.19 0.11 -344.40 -0.38
18 0.1639 -4118.42 0.06 -343.89 0.06
19 0.1639 -4119.62 -0.22 -344.12 -0.19
20 0.9884 4110.30 0.14 -1997.37 0.07
21 0.9884 4108.41 -0.18 -1997.87 -0.02
22 0.9885 4106.89 0.05 -1998.11 0.18
23 1.2235 -1380.08 -0.07 -2305.79 -0.02
24 1.2235 -1380.40 0.06 -2305.81 -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.
17BO236 quality flag:3 Type: SCATEXTD SCATEXTD SCATEXTD axisobj 41.309 41.352 41.270 ecceobj 0.082 0.085 0.079 incobj 29.819 29.820 29.818 qmin 37.371 37.312 37.418 qmax 45.531 45.654 45.394 amean 41.333 41.372 41.299 amin 41.014 41.059 40.981 amax 41.679 41.712 41.639 emean 0.079 0.082 0.077 emin 0.066 0.069 0.064 emax 0.093 0.095 0.091 imean 31.197 31.204 31.191 imin 30.868 30.881 30.861 imax 31.489 31.501 31.500 excite_mean 0.524 0.525 0.524 fracstop 1.000 1.000 1.000 cjmean 2.725 2.725 2.726 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 181.4 180.0 185.1 kozaiamp 180.0 179.9 179.9