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: 17BO237 # Created Wed Nov 27 02:10:46 2024 # Orbit generated from Bernstein formalism # Fitting 16 observations of 16 # Arc: 38.97d # First observation: 2017/01/26 # Last observation: 2017/03/06 Preliminary a, adot, b, bdot, g, gdot: 0.000000 0.026969 0.000000 0.002201 0.025829 0.000000 # WARNING Fitting with energy constraint # Chi-squared of fit: 7.34 DOF: 27 RMS: 0.12 # Min/Max residuals: -0.26 0.26 # Exact a, adot, b, bdot, g, gdot: 1.581668E-05 2.524146E-02 1.385949E-06 2.168794E-03 2.549702E-02 -1.172044E-02 # Covariance matrix: 1.4260E-12 2.1265E-09 3.2483E-13 3.5710E-11 3.5676E-10 6.5964E-09 2.1265E-09 3.7175E-06 5.6129E-10 6.1880E-08 6.1639E-07 8.5658E-06 3.2483E-13 5.6129E-10 2.5220E-13 7.7676E-12 9.3406E-11 1.4401E-09 3.5710E-11 6.1880E-08 7.7676E-12 1.0660E-09 1.0288E-08 1.5453E-07 3.5676E-10 6.1639E-07 9.3406E-11 1.0288E-08 1.0258E-07 1.5833E-06 6.5964E-09 8.5658E-06 1.4401E-09 1.5453E-07 1.5833E-06 9.0314E-05 # lat0 lon0 xBary yBary zBary JD0 -13.009687 149.914707 0.397271 -0.202989 -0.879372 2457779.961371 # Heliocentric elements and errors Epoch: 2457770.5000 = 2017/01/17 Mean Anomaly: 321.96765 +/- 25.701 Argument of Peri: 21.07306 +/- 15.571 Long of Asc Node: 218.04444 +/- 1.523 Inclination: 13.61709 +/- 0.140 Eccentricity: 0.47406200 +/- 0.3661 Semi-Major Axis: 51.58956824 +/- 21.1938 Time of Perihelion: 2472069.0491 +/- 3965.7 Perihelion: 27.13291430 +/- 21.9330 Aphelion: 76.04622219 +/- 36.5076 Period (y) 370.5536 +/- 228.34 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X -33.65083666 +/- 0.4153 Ecliptic Y 19.94754865 +/- 0.2407 Ecliptic Z -8.82907519 +/- 0.1109 Ecliptic XDOT -0.00034017 +/- 0.0009 Ecliptic YDOT -0.00294037 +/- 0.0005 Ecliptic ZDOT 0.00051016 +/- 0.0002 # Distances at JD0 (AU) Heliocenter to KBO 40.10281877 +/- 0.3693 Geocenter to KBO 39.22026617 +/- 0.4927 # Hcoef: 8.45
The following table shows the complete astrometric record for 17BO237. 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 (17BO237) followed by the observatory code and reference code for the source of the astrometry.
2017 01 26.46057 09 49 53.40 -00 42 08.2 23.7z 17BO237 T09 C~83Er 2017 01 26.46663 09 49 53.39 -00 42 08.2 24.6z 17BO237 T09 C~83Er 2017 01 26.47468 09 49 53.32 -00 42 07.9 24.0z 17BO237 T09 C~83Er 2017 01 26.49344 09 49 53.25 -00 42 07.5 24.2z 17BO237 T09 C~83Er 2017 01 26.56424 09 49 52.92 -00 42 06.5 23.8z 17BO237 T09 C~83Er 2017 01 26.57764 09 49 52.86 -00 42 06.2 24.1z 17BO237 T09 C~83Er 2017 01 28.44025 09 49 44.37 -00 41 32.8 25.3g 17BO237 T09 C~83Er 2017 01 28.45712 09 49 44.29 -00 41 32.4 25.3g 17BO237 T09 C~83Er 2017 01 28.46970 09 49 44.23 -00 41 32.6 25.1g 17BO237 T09 C~83Er 2017 03 06.35845 09 46 49.32 -00 25 30.0 24.3i 17BO237 T09 C~83Er 2017 03 06.36203 09 46 49.31 -00 25 30.2 24.5i 17BO237 T09 C~83Er 2017 03 06.37480 09 46 49.26 -00 25 29.9 24.1i 17BO237 T09 C~83Er 2017 03 06.38592 09 46 49.21 -00 25 29.5 24.3i 17BO237 T09 C~83Er 2017 03 06.40546 09 46 49.12 -00 25 28.7 24.2i 17BO237 T09 C~83Er 2017 03 06.41890 09 46 49.06 -00 25 28.4 24.0i 17BO237 T09 C~83Er 2017 03 06.42963 09 46 49.01 -00 25 27.9 24.3i 17BO237 T09 C~83Er
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 -0.01
2 0.0000 -0.14 0.26 -0.05 -0.01
3 0.0000 -1.23 -0.26 -0.13 -0.03
4 0.0001 -2.35 -0.05 -0.12 0.12
5 0.0003 -7.34 -0.01 -0.88 -0.10
6 0.0003 -8.29 -0.01 -0.91 -0.03
7 0.0054 -139.35 0.03 -13.38 0.11
8 0.0055 -140.61 -0.02 -13.42 0.19
9 0.0055 -141.39 0.12 -13.92 -0.22
10 0.1065 -2936.13 -0.24 -13.41 0.17
11 0.1065 -2936.20 -0.05 -13.65 -0.09
12 0.1065 -2937.01 0.10 -13.62 -0.14
13 0.1066 -2937.85 0.09 -13.51 -0.09
14 0.1066 -2939.39 0.02 -13.22 0.07
15 0.1067 -2940.34 0.07 -13.25 -0.04
16 0.1067 -2941.22 0.00 -13.04 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.
17BO237 quality flag:0 Type: ERR2LARGE ERR2LARGE ERR2LARGE axisobj 0.000 0.000 0.000 ecceobj -1.000 -1.000 -1.000 incobj -1.000 -1.000 -1.000 qmin 0.000 0.000 0.000 qmax 0.000 0.000 0.000 amean 0.000 0.000 0.000 amin 0.000 0.000 0.000 amax 0.000 0.000 0.000 emean 0.000 0.000 0.000 emin 0.000 0.000 0.000 emax 0.000 0.000 0.000 imean 0.000 0.000 0.000 imin 0.000 0.000 0.000 imax 0.000 0.000 0.000 excite_mean 0.000 0.000 0.000 fracstop 0.000 0.000 0.000 cjmean 0.000 0.000 0.000 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 0.0 0.0 0.0 kozaiamp 0.0 0.0 0.0