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: 17BJ230 # Created Wed May 8 01:18:05 2024 # Orbit generated from Bernstein formalism # Fitting 28 observations of 28 # Arc: 89.77d # First observation: 2016/12/25 # Last observation: 2017/03/25 Preliminary a, adot, b, bdot, g, gdot: -0.000006 0.022232 -0.000002 -0.011500 0.025115 0.000000 # Chi-squared of fit: 18.31 DOF: 50 RMS: 0.14 # Min/Max residuals: -0.31 0.30 # Exact a, adot, b, bdot, g, gdot: 1.433737E-05 2.202160E-02 -7.738449E-06 -1.140290E-02 2.490360E-02 4.164191E-03 # Covariance matrix: 4.5181E-13 -1.1265E-11 -2.7435E-14 -7.4668E-13 -1.0931E-12 1.1729E-10 -1.1265E-11 1.9100E-09 1.7256E-11 7.7504E-12 3.9028E-10 1.1959E-08 -2.7435E-14 1.7256E-11 3.5981E-13 -1.2047E-12 3.8473E-12 1.6387E-10 -7.4668E-13 7.7504E-12 -1.2047E-12 1.0892E-11 -1.7130E-12 -5.4995E-10 -1.0931E-12 3.9028E-10 3.8473E-12 -1.7130E-12 8.4797E-11 3.3049E-09 1.1729E-10 1.1959E-08 1.6387E-10 -5.4995E-10 3.3049E-09 2.2930E-07 # lat0 lon0 xBary yBary zBary JD0 -10.113769 152.818673 0.847200 -0.088803 -0.498957 2457748.018999 # Heliocentric elements and errors Epoch: 2457740.5000 = 2016/12/18 Mean Anomaly: 61.49272 +/- 1.078 Argument of Peri: 122.58552 +/- 1.082 Long of Asc Node: 313.18310 +/- 0.038 Inclination: 29.11442 +/- 0.048 Eccentricity: 0.15357997 +/- 0.0198 Semi-Major Axis: 42.94373670 +/- 0.3386 Time of Perihelion: 2440182.7303 +/- 227.3 Perihelion: 36.34843879 +/- 0.8977 Aphelion: 49.53903462 +/- 0.9361 Period (y) 281.4219 +/- 3.33 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X -35.23273020 +/- 0.0130 Ecliptic Y 19.03873947 +/- 0.0067 Ecliptic Z -7.05166748 +/- 0.0026 Ecliptic XDOT -0.00130847 +/- 0.0000 Ecliptic YDOT -0.00205504 +/- 0.0000 Ecliptic ZDOT -0.00131457 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 40.66380322 +/- 0.0117 Geocenter to KBO 40.15483838 +/- 0.0148 # Hcoef: 8.93
The following table shows the complete astrometric record for 17BJ230. 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 (17BJ230) followed by the observatory code and reference code for the source of the astrometry.
2016 12 25.51821 10 04 35.85 +01 01 05.8 26.1r 17BJ230 T09 C~7ujA 2016 12 25.54616 10 04 35.76 +01 01 05.6 25.6r 17BJ230 T09 C~7ujA 2016 12 25.61625 10 04 35.60 +01 01 04.8 25.5i 17BJ230 T09 C~7ujA 2017 01 21.44099 10 02 59.70 +01 01 41.9 25.1z 17BJ230 T09 C~7ujA 2017 01 21.51187 10 02 59.36 +01 01 43.0 24.5z 17BJ230 T09 C~7ujA 2017 01 21.53790 10 02 59.26 +01 01 43.0 25.0z 17BJ230 T09 C~7ujA 2017 01 21.56003 10 02 59.16 +01 01 43.2 24.4z 17BJ230 T09 C~7ujA 2017 01 23.36273 10 02 51.19 +01 02 00.0 24.8r 17BJ230 T09 C~7ujA 2017 01 23.39642 10 02 51.05 +01 02 00.5 25.4r 17BJ230 T09 C~7ujA 2017 01 23.41024 10 02 50.96 +01 02 00.7 25.2r 17BJ230 T09 C~7ujA 2017 01 23.52068 10 02 50.47 +01 02 01.7 25.3i 17BJ230 T09 C~7ujA 2017 01 23.59193 10 02 50.13 +01 02 02.3 25.5i 17BJ230 T09 C~7ujA 2017 01 30.43912 10 02 18.50 +01 03 22.4 24.3i 17BJ230 T09 C~7ujA 2017 01 30.46126 10 02 18.41 +01 03 22.6 24.8i 17BJ230 T09 C~7ujA 2017 01 30.50547 10 02 18.19 +01 03 23.4 24.2z 17BJ230 T09 C~7ujA 2017 01 30.56834 10 02 17.88 +01 03 24.1 24.5z 17BJ230 T09 C~7ujA 2017 01 30.59415 10 02 17.76 +01 03 24.2 24.4z 17BJ230 T09 C~7ujA 2017 01 30.61597 10 02 17.63 +01 03 24.6 23.8z 17BJ230 T09 C~7ujA 2017 03 04.34360 09 59 35.97 +01 13 53.0 24.5z 17BJ230 T09 C~7ujA 2017 03 04.45601 09 59 35.42 +01 13 55.7 24.3i 17BJ230 T09 C~7ujA 2017 03 04.47782 09 59 35.32 +01 13 56.2 24.4i 17BJ230 T09 C~7ujA 2017 03 04.49952 09 59 35.21 +01 13 56.5 24.5i 17BJ230 T09 C~7ujA 2017 03 22.39100 09 58 15.41 +01 21 05.1 24.2z 17BJ230 T09 C~7ujA 2017 03 22.41670 09 58 15.30 +01 21 05.6 24.8z 17BJ230 T09 C~7ujA 2017 03 22.44235 09 58 15.18 +01 21 06.3 24.8z 17BJ230 T09 C~7ujA 2017 03 25.24634 09 58 04.11 +01 22 13.1 24.8r 17BJ230 T09 C~7ujA 2017 03 25.27375 09 58 04.00 +01 22 13.9 25.8r 17BJ230 T09 C~7ujA 2017 03 25.28747 09 58 03.94 +01 22 14.6 25.5r 17BJ230 T09 C~7ujA
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 -0.07 0.00 0.10
2 0.0001 -1.19 -0.28 -0.66 0.01
3 0.0003 -3.15 0.24 -2.26 -0.16
4 0.0737 -1361.52 0.24 -476.50 -0.22
5 0.0739 -1366.68 -0.25 -477.27 0.10
6 0.0740 -1368.08 0.06 -477.80 -0.03
7 0.0740 -1369.56 0.05 -478.15 -0.03
8 0.0790 -1487.31 0.18 -504.72 -0.13
9 0.0791 -1489.45 0.30 -505.00 0.09
10 0.0791 -1490.78 -0.11 -505.29 0.01
11 0.0794 -1498.01 0.12 -506.95 -0.01
12 0.0796 -1502.99 -0.05 -508.20 -0.19
13 0.0983 -1975.06 -0.14 -601.10 0.12
14 0.0984 -1976.39 0.13 -601.39 0.12
15 0.0985 -1979.76 -0.03 -601.81 0.29
16 0.0987 -1984.36 -0.07 -602.80 0.13
17 0.0988 -1986.08 0.08 -603.34 -0.08
18 0.0988 -1988.04 -0.31 -603.65 -0.11
19 0.1884 -4478.70 -0.08 -873.29 0.04
20 0.1887 -4487.37 -0.11 -873.68 0.11
21 0.1888 -4488.95 -0.02 -873.75 0.13
22 0.1889 -4490.60 -0.00 -874.05 -0.08
23 0.2378 -5762.35 0.15 -896.14 0.05
24 0.2379 -5764.07 0.13 -896.26 -0.08
25 0.2380 -5766.00 -0.10 -896.24 -0.07
26 0.2457 -5945.04 0.11 -892.42 -0.23
27 0.2457 -5946.87 0.03 -892.25 -0.10
28 0.2458 -5947.96 -0.18 -891.91 0.21
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.
17BJ230 quality flag:3 Type: SCATEXTD SCATEXTD SCATEXTD axisobj 42.838 44.067 41.870 ecceobj 0.158 0.209 0.108 incobj 29.149 29.032 29.280 qmin 35.521 34.172 36.897 qmax 50.409 54.310 47.108 amean 42.800 44.022 41.868 amin 42.447 43.625 41.548 amax 43.201 44.497 42.222 emean 0.150 0.201 0.102 emin 0.134 0.182 0.088 emax 0.168 0.222 0.117 imean 30.593 30.511 30.689 imin 30.194 30.005 30.317 imax 30.976 30.954 31.016 excite_mean 0.531 0.546 0.520 fracstop 1.000 1.000 1.000 cjmean 2.731 2.724 2.735 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 188.8 184.1 192.8 kozaiamp 180.0 180.0 180.0