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: 17BO231 # Created Sun Dec 22 02:10:54 2024 # Orbit generated from Bernstein formalism # Fitting 30 observations of 30 # Arc: 2.28y # First observation: 2016/12/23 # Last observation: 2019/04/05 Preliminary a, adot, b, bdot, g, gdot: 0.000071 0.034184 0.000012 -0.001438 0.029516 0.000000 # Chi-squared of fit: 24.71 DOF: 54 RMS: 0.16 # Min/Max residuals: -0.45 0.39 # Exact a, adot, b, bdot, g, gdot: 1.797243E-05 3.363088E-02 5.167523E-07 -1.412548E-03 2.896041E-02 -1.639895E-03 # Covariance matrix: 2.1631E-13 3.1053E-13 2.2714E-14 -2.6791E-14 3.6489E-13 5.4255E-12 3.1053E-13 2.0734E-12 8.2233E-14 -1.8776E-13 1.2180E-12 3.9359E-11 2.2714E-14 8.2233E-14 7.9193E-14 -4.5315E-14 6.5808E-14 1.4587E-12 -2.6791E-14 -1.8776E-13 -4.5315E-14 7.1666E-14 -1.0249E-13 -3.7545E-12 3.6489E-13 1.2180E-12 6.5808E-14 -1.0249E-13 1.0289E-12 2.1123E-11 5.4255E-12 3.9359E-11 1.4587E-12 -3.7545E-12 2.1123E-11 7.9028E-10 # lat0 lon0 xBary yBary zBary JD0 -8.241130 152.552883 0.863018 -0.068579 -0.474878 2457745.969443 # Heliocentric elements and errors Epoch: 2457740.5000 = 2016/12/18 Mean Anomaly: 344.53066 +/- 0.150 Argument of Peri: 276.65479 +/- 0.247 Long of Asc Node: 259.03945 +/- 0.003 Inclination: 8.53344 +/- 0.000 Eccentricity: 0.21762574 +/- 0.0004 Semi-Major Axis: 44.04385211 +/- 0.0080 Time of Perihelion: 2462328.2072 +/- 44.4 Perihelion: 34.45877605 +/- 0.0173 Aphelion: 53.62892817 +/- 0.0189 Period (y) 292.3049 +/- 0.08 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X -30.35836026 +/- 0.0011 Ecliptic Y 16.73410185 +/- 0.0006 Ecliptic Z -4.94951819 +/- 0.0002 Ecliptic XDOT -0.00130978 +/- 0.0000 Ecliptic YDOT -0.00290776 +/- 0.0000 Ecliptic ZDOT -0.00010999 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 35.01653799 +/- 0.0010 Geocenter to KBO 34.52989350 +/- 0.0012 # Hcoef: 9.85
The following table shows the complete astrometric record for 17BO231. 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 (17BO231) followed by the observatory code and reference code for the source of the astrometry.
2016 12 23.468654 10 06 15.95 +02 51 45.7 17BO231 T09 C~81Bn 2016 12 23.518464 10 06 15.82 +02 51 46.0 17BO231 T09 C~81Bn 2017 01 21.43262 10 04 31.64 +02 55 37.3 24.8z 17BO231 T09 C~7xTm 2017 01 21.47848 10 04 31.43 +02 55 38.2 25.0z 17BO231 T09 C~7xTm 2017 01 21.50455 10 04 31.29 +02 55 38.5 24.6z 17BO231 T09 C~7xTm 2017 01 21.55293 10 04 31.06 +02 55 39.7 24.8z 17BO231 T09 C~7xTm 2017 01 23.45863 10 04 22.10 +02 56 12.5 25.3r 17BO231 T09 C~7xTm 2017 01 23.49339 10 04 21.94 +02 56 13.2 24.9i 17BO231 T09 C~7xTm 2017 01 23.51343 10 04 21.82 +02 56 13.5 24.9i 17BO231 T09 C~7xTm 2017 01 30.43188 10 03 47.73 +02 58 30.8 25.2i 17BO231 T09 C~7xTm 2017 01 30.52425 10 03 47.26 +02 58 32.6 24.5z 17BO231 T09 C~7xTm 2017 01 30.56119 10 03 47.06 +02 58 33.5 24.2z 17BO231 T09 C~7xTm 2017 01 30.58702 10 03 46.94 +02 58 34.1 24.6z 17BO231 T09 C~7xTm 2017 01 30.60892 10 03 46.81 +02 58 34.5 24.3z 17BO231 T09 C~7xTm 2017 02 21.32048 10 01 51.15 +03 07 58.1 24.4z 17BO231 T09 C~7xTm 2017 02 21.37159 10 01 50.88 +03 07 59.6 24.6z 17BO231 T09 C~7xTm 2017 02 21.41923 10 01 50.60 +03 08 01.0 24.9z 17BO231 T09 C~7xTm 2017 02 23.46476 10 01 39.55 +03 09 02.2 26.2r 17BO231 T09 C~7xTm 2017 02 23.47842 10 01 39.50 +03 09 02.5 25.9r 17BO231 T09 C~7xTm 2017 02 23.49203 10 01 39.41 +03 09 02.7 26.0r 17BO231 T09 C~7xTm 2017 02 23.50949 10 01 39.32 +03 09 03.5 25.7r 17BO231 T09 C~7xTm 2018 01 17.520961 10 12 01.75 +02 08 28.5 17BO231 T09 C~81Bn 2019 02 05.369768 10 17 46.64 +01 27 50.7 17BO231 T09 C~81Bn 2019 02 05.425366 10 17 46.35 +01 27 51.9 17BO231 T09 C~81Bn 2019 04 04.366236 10 12 59.75 +01 57 19.8 17BO231 T09 C~81Bn 2019 04 05.33451 10 12 56.22 +01 57 49.0 25.2r 17BO231 T09 C~8COq 2019 04 05.33730 10 12 56.19 +01 57 49.2 25.7r 17BO231 T09 C~8COq 2019 04 05.34818 10 12 56.15 +01 57 49.5 25.6r 17BO231 T09 C~8COq 2019 04 05.36102 10 12 56.11 +01 57 50.0 26.1r 17BO231 T09 C~8COq 2019 04 05.36958 10 12 56.08 +01 57 49.7 25.8r 17BO231 T09 C~8COq
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 -0.27
2 0.0001 -1.93 -0.18 -0.41 0.04
3 0.0793 -1543.75 0.04 -335.37 -0.01
4 0.0794 -1547.01 0.10 -335.64 0.15
5 0.0795 -1549.07 -0.08 -336.10 -0.07
6 0.0796 -1552.72 -0.21 -336.19 0.29
7 0.0848 -1689.89 0.04 -352.90 -0.13
8 0.0849 -1692.38 0.14 -353.09 -0.01
9 0.0850 -1694.17 -0.16 -353.44 -0.19
10 0.1039 -2220.48 -0.09 -405.25 0.07
11 0.1042 -2227.70 0.10 -406.05 -0.07
12 0.1043 -2230.82 -0.06 -406.26 -0.02
13 0.1044 -2232.72 0.12 -406.34 0.09
14 0.1044 -2234.68 -0.09 -406.65 -0.06
15 0.1639 -4055.00 0.08 -490.37 -0.14
16 0.1640 -4059.32 0.24 -490.39 -0.09
17 0.1641 -4063.74 -0.01 -490.56 -0.19
18 0.1697 -4240.26 -0.25 -491.63 0.21
19 0.1698 -4241.07 0.14 -491.61 0.24
20 0.1698 -4242.40 -0.00 -491.90 -0.04
21 0.1699 -4243.95 -0.02 -491.62 0.25
22 1.0679 5767.38 0.15 -594.86 -0.10
23 2.1188 11477.10 0.00 -1039.96 0.16
24 2.1190 11472.60 0.04 -1040.39 0.06
25 2.2776 6818.43 0.39 -912.08 0.39
26 2.2803 6758.52 0.08 -903.54 -0.05
27 2.2803 6758.03 -0.24 -903.51 -0.05
28 2.2803 6757.36 -0.23 -903.44 -0.08
29 2.2803 6756.63 -0.17 -903.18 0.06
30 2.2804 6756.31 0.05 -903.62 -0.45
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.
17BO231 quality flag:2 Type: 7:4EEE 7:4EEE SCATNEAR axisobj 43.790 43.806 43.775 ecceobj 0.211 0.211 0.211 incobj 8.517 8.517 8.517 qmin 33.954 34.071 33.926 qmax 54.366 54.167 54.258 amean 43.726 43.726 43.684 amin 43.178 43.165 43.187 amax 44.347 44.361 44.354 emean 0.209 0.205 0.193 emin 0.194 0.188 0.134 emax 0.226 0.222 0.226 imean 10.752 10.770 10.648 imin 9.377 9.176 8.906 imax 11.786 12.103 12.187 excite_mean 0.280 0.278 0.268 fracstop 1.000 1.000 1.000 cjmean 3.003 3.004 3.010 libcent 0 181.1 180.8 -180.0 libamp 0 162.7 164.9 -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 184.3 177.9 177.0 kozaiamp 180.0 179.9 180.0