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: 17BJ232
# Created Thu Oct 31 01:10:31 2024
# Orbit generated from Bernstein formalism
# Fitting 27 observations of 27
# Arc: 3.00y
# First observation: 2016/04/02
# Last observation: 2019/04/03
Preliminary a, adot, b, bdot, g, gdot:
-0.000109 0.036590 -0.000016 0.002843 0.029937 0.000000
# Chi-squared of fit: 11.38 DOF: 48 RMS: 0.11
# Min/Max residuals: -0.27 0.28
# Exact a, adot, b, bdot, g, gdot:
1.849084E-05 3.638550E-02 1.775304E-06 2.831557E-03 3.067170E-02 -5.822204E-04
# Covariance matrix:
1.4890E-13 -4.6037E-13 8.2092E-15 -2.9271E-14 6.8758E-14 -3.7337E-12
-4.6037E-13 2.8691E-12 -5.6602E-14 1.9738E-13 -6.0691E-13 2.5171E-11
8.2092E-15 -5.6602E-14 8.7655E-14 -5.6785E-14 1.3033E-14 -5.1098E-13
-2.9271E-14 1.9738E-13 -5.6785E-14 1.0285E-13 -4.0523E-14 1.7925E-12
6.8758E-14 -6.0691E-13 1.3033E-14 -4.0523E-14 2.8690E-13 -5.1618E-12
-3.7337E-12 2.5171E-11 -5.1098E-13 1.7925E-12 -5.1618E-12 2.2860E-10
# lat0 lon0 xBary yBary zBary JD0
1.971481 -176.354668 -0.158195 0.033955 -0.982383 2457480.901124
# Heliocentric elements and errors
Epoch: 2457480.5000 = 2016/04/02
Mean Anomaly: 357.65850 +/- 0.088
Argument of Peri: 27.06096 +/- 0.138
Long of Asc Node: 160.60098 +/- 0.002
Inclination: 4.82485 +/- 0.000
Eccentricity: 0.21040715 +/- 0.0001
Semi-Major Axis: 42.52579350 +/- 0.0085
Time of Perihelion: 2458139.3236 +/- 24.8
Perihelion: 33.57806230 +/- 0.0086
Aphelion: 51.47352471 +/- 0.0117
Period (y) 277.3236 +/- 0.08
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X -33.49277458 +/- 0.0006
Ecliptic Y -2.29471714 +/- 0.0000
Ecliptic Z 1.12170361 +/- 0.0000
Ecliptic XDOT 0.00026712 +/- 0.0000
Ecliptic YDOT -0.00324444 +/- 0.0000
Ecliptic ZDOT 0.00025082 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 33.59002671 +/- 0.0006
Geocenter to KBO 32.60334676 +/- 0.0006
# Hcoef: 9.76
The following table shows the complete astrometric record for 17BJ232. 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 (17BJ232) followed by the observatory code and reference code for the source of the astrometry.
2016 04 02.400335 12 16 30.72 +00 21 36.9 17BJ232 T09 C~81Bn 2016 04 02.523267 12 16 30.05 +00 21 41.3 17BJ232 T09 C~81Bn 2016 04 04.34312 12 16 20.44 +00 22 45.9 25.4g 17BJ232 T09 C~89UT 2016 04 04.35452 12 16 20.38 +00 22 45.9 26.4g 17BJ232 T09 C~89UT 2016 04 04.36588 12 16 20.33 +00 22 46.6 25.7g 17BJ232 T09 C~89UT 2016 04 04.38727 12 16 20.21 +00 22 47.1 25.8g 17BJ232 T09 C~89UT 2016 04 05.428310 12 16 14.74 +00 23 23.8 17BJ232 T09 C~81Bn 2016 04 05.487196 12 16 14.42 +00 23 25.8 17BJ232 T09 C~81Bn 2016 04 06.454378 12 16 09.37 +00 23 59.5 17BJ232 T09 C~81Bn 2016 04 06.551247 12 16 08.85 +00 24 02.9 17BJ232 T09 C~81Bn 2016 06 04.30815 12 12 45.65 +00 45 14.5 24.3z 17BJ232 T09 C~8COq 2016 06 04.31085 12 12 45.65 +00 45 14.3 24.1z 17BJ232 T09 C~8COq 2016 06 04.32438 12 12 45.65 +00 45 14.3 24.2z 17BJ232 T09 C~8COq 2016 06 04.34057 12 12 45.62 +00 45 14.5 24.5z 17BJ232 T09 C~8COq 2017 01 23.60759 12 29 13.95 -00 54 21.6 25.0i 17BJ232 T09 C~7xTo 2017 01 23.61026 12 29 13.95 -00 54 21.6 25.0i 17BJ232 T09 C~7xTo 2017 01 23.62095 12 29 13.94 -00 54 21.2 24.9i 17BJ232 T09 C~7xTo 2017 01 23.64653 12 29 13.87 -00 54 20.9 25.1i 17BJ232 T09 C~7xTo 2017 01 28.59194 12 29 04.86 -00 52 55.7 24.6z 17BJ232 T09 C~7xTo 2017 01 28.60345 12 29 04.83 -00 52 55.6 24.6z 17BJ232 T09 C~7xTo 2017 01 28.61691 12 29 04.81 -00 52 55.2 24.6z 17BJ232 T09 C~7xTo 2017 01 28.65069 12 29 04.73 -00 52 54.7 24.6z 17BJ232 T09 C~7xTo 2017 02 23.52167 12 27 40.02 -00 41 45.6 25.2r 17BJ232 T09 C~81Bn 2017 02 23.59538 12 27 39.67 -00 41 43.2 26.2r 17BJ232 T09 C~81Bn 2017 02 23.60592 12 27 39.65 -00 41 42.7 25.3r 17BJ232 T09 C~81Bn 2019 04 03.442715 12 40 17.25 -01 40 37.1 17BJ232 T09 C~81Bn 2019 04 03.464217 12 40 17.13 -01 40 36.3 17BJ232 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 0.06 0.00 -0.07
2 0.0003 -10.97 -0.03 0.05 -0.07
3 0.0053 -168.92 -0.20 2.12 0.09
4 0.0054 -169.74 -0.03 1.76 -0.27
5 0.0054 -170.71 0.01 2.10 0.07
6 0.0054 -172.56 0.04 1.85 -0.19
7 0.0083 -262.44 0.06 2.96 0.02
8 0.0085 -267.64 0.01 2.89 -0.07
9 0.0111 -350.54 0.11 3.75 -0.02
10 0.0114 -359.05 0.01 3.78 -0.03
11 0.1722 -3661.62 -0.14 -38.79 0.14
12 0.1722 -3661.54 -0.02 -38.98 -0.04
13 0.1723 -3661.54 0.19 -38.98 -0.01
14 0.1723 -3662.04 -0.05 -38.97 0.03
15 0.8110 12331.68 0.03 360.81 -0.04
16 0.8110 12331.68 0.11 360.81 -0.06
17 0.8110 12331.39 0.12 361.12 0.21
18 0.8111 12330.30 -0.21 360.98 -0.05
19 0.8246 12171.90 0.00 385.60 0.22
20 0.8246 12171.44 -0.02 385.52 0.08
21 0.8247 12171.01 0.05 385.77 0.28
22 0.8248 12169.70 0.02 385.75 0.12
23 0.8956 10733.56 0.10 495.86 -0.09
24 0.8958 10727.78 -0.27 495.98 -0.19
25 0.8958 10727.30 0.03 496.32 0.12
26 3.0008 22640.06 0.03 1762.76 -0.09
27 3.0009 22638.07 -0.01 1762.78 -0.07
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.
17BJ232 quality flag:3 Type: 5:3EE 5:3EE 5:3EE axisobj 42.037 42.120 41.955 ecceobj 0.201 0.202 0.199 incobj 4.843 4.843 4.843 qmin 32.502 32.885 32.606 qmax 52.812 52.388 52.762 amean 42.328 42.327 42.328 amin 41.819 41.873 41.791 amax 42.906 42.851 42.951 emean 0.205 0.205 0.209 emin 0.138 0.187 0.182 emax 0.232 0.224 0.230 imean 4.583 4.448 5.371 imin 2.352 3.912 4.063 imax 8.958 5.405 7.150 excite_mean 0.223 0.219 0.230 fracstop 1.000 1.000 1.000 cjmean 3.023 3.025 3.019 libcent 0 177.0 180.4 177.4 libamp 0 120.3 81.9 133.7 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 240.9 189.1 146.2 kozaiamp 179.9 180.0 95.8