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: 17BJ231 # Created Sun Dec 22 02:10:54 2024 # Orbit generated from Bernstein formalism # Fitting 89 observations of 90 # Arc: 2.45y # First observation: 2016/11/25 # Last observation: 2019/05/09 Preliminary a, adot, b, bdot, g, gdot: 0.000035 0.028944 0.000014 0.000231 0.026435 0.000000 # Chi-squared of fit: 74.76 DOF: 172 RMS: 0.16 # Min/Max residuals: -0.50 0.38 # Exact a, adot, b, bdot, g, gdot: 1.774594E-05 2.827242E-02 -1.684133E-06 2.302796E-04 2.575271E-02 -1.861985E-04 # Covariance matrix: 3.6568E-14 7.1066E-14 7.0441E-15 -1.0004E-15 8.5107E-14 1.3280E-12 7.1066E-14 1.5744E-12 6.6510E-14 -4.7644E-14 8.3683E-13 3.2907E-11 7.0441E-15 6.6510E-14 2.3048E-14 -1.5687E-14 4.6815E-14 1.3086E-12 -1.0004E-15 -4.7644E-14 -1.5687E-14 6.3021E-14 -2.1251E-14 -1.1063E-12 8.5107E-14 8.3683E-13 4.6815E-14 -2.1251E-14 5.7833E-13 1.6612E-11 1.3280E-12 3.2907E-11 1.3086E-12 -1.1063E-12 1.6612E-11 7.3749E-10 # lat0 lon0 xBary yBary zBary JD0 -9.059319 151.187305 0.991149 -0.005838 -0.037862 2457718.062129 # Heliocentric elements and errors Epoch: 2457710.5000 = 2016/11/18 Mean Anomaly: 352.06130 +/- 0.220 Argument of Peri: 283.29289 +/- 0.335 Long of Asc Node: 238.32948 +/- 0.003 Inclination: 9.04996 +/- 0.000 Eccentricity: 0.19388064 +/- 0.0002 Semi-Major Axis: 48.06511247 +/- 0.0039 Time of Perihelion: 2460394.5470 +/- 74.5 Perihelion: 38.74621790 +/- 0.0087 Aphelion: 57.38400704 +/- 0.0094 Period (y) 333.2369 +/- 0.04 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X -33.15886608 +/- 0.0010 Ecliptic Y 19.36361124 +/- 0.0005 Ecliptic Z -6.11429301 +/- 0.0002 Ecliptic XDOT -0.00143252 +/- 0.0000 Ecliptic YDOT -0.00264793 +/- 0.0000 Ecliptic ZDOT 0.00002725 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 38.88244358 +/- 0.0009 Geocenter to KBO 38.83086333 +/- 0.0011 # Hcoef: 9.65
The following table shows the complete astrometric record for 17BJ231. 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 (17BJ231) followed by the observatory code and reference code for the source of the astrometry.
2016 11 25.56134 10 00 03.20 +02 34 14.6 25.9g 17BJ231 T09 C~7xTl 2016 11 25.60304 10 00 03.21 +02 34 13.4 25.1i 17BJ231 T09 C~7xTl 2016 11 25.61072 10 00 03.21 +02 34 13.4 25.3i 17BJ231 T09 C~7xTl 2016 11 25.61456 10 00 03.21 +02 34 13.1 24.6i 17BJ231 T09 C~7xTl 2016 11 25.61838 10 00 03.22 +02 34 13.4 25.5i 17BJ231 T09 C~7xTl 2016 11 25.62614 10 00 03.22 +02 34 12.9 25.3i 17BJ231 T09 C~7xTl 2016 11 25.62997 10 00 03.22 +02 34 12.9 25.1i 17BJ231 T09 C~7xTl 2016 11 25.63407 10 00 03.22 +02 34 13.1 24.8i 17BJ231 T09 C~7xTl 2016 11 25.63792 10 00 03.21 +02 34 12.8 25.1i 17BJ231 T09 C~7xTl 2016 11 28.59145 10 00 03.87 +02 33 23.5 25.3r 17BJ231 T09 C~7xTl 2016 11 28.59529 10 00 03.86 +02 33 23.7 26.1r 17BJ231 T09 C~7xTl 2016 11 28.59911 10 00 03.86 +02 33 23.9 25.7r 17BJ231 T09 C~7xTl 2016 11 28.60294 10 00 03.87 +02 33 23.5 25.5r 17BJ231 T09 C~7xTl 2016 11 28.60679 10 00 03.87 +02 33 23.5 25.7r 17BJ231 T09 C~7xTl 2016 11 28.61062 10 00 03.87 +02 33 23.4 25.7r 17BJ231 T09 C~7xTl 2016 11 29.53506 10 00 03.90 +02 33 09.3 25.4i 17BJ231 T09 C~7xTl 2016 11 29.53891 10 00 03.90 +02 33 09.1 25.3i 17BJ231 T09 C~7xTl 2016 11 29.54278 10 00 03.89 +02 33 09.1 26.0i 17BJ231 T09 C~7xTl 2016 11 29.54660 10 00 03.87 +02 33 08.9 25.2i 17BJ231 T09 C~7xTl 2016 11 29.55428 10 00 03.86 +02 33 09.3 25.2i 17BJ231 T09 C~7xTl 2016 11 29.55811 10 00 03.88 +02 33 08.6 25.3i 17BJ231 T09 C~7xTl 2016 11 29.56198 10 00 03.89 +02 33 08.6 25.6i 17BJ231 T09 C~7xTl 2016 11 29.58575 10 00 03.87 +02 33 08.3 25.0z 17BJ231 T09 C~7xTl 2016 12 25.50742 09 59 30.52 +02 29 55.6 25.3r 17BJ231 T09 C~7xTl 2016 12 25.51058 09 59 30.51 +02 29 56.0 25.0r 17BJ231 T09 C~7xTl 2016 12 25.52138 09 59 30.46 +02 29 55.8 25.4r 17BJ231 T09 C~7xTl 2016 12 25.53531 09 59 30.43 +02 29 55.8 25.8r 17BJ231 T09 C~7xTm 2016 12 25.53845 09 59 30.43 +02 29 56.1 25.1r 17BJ231 T09 C~7xTm 2016 12 25.54929 09 59 30.40 +02 29 56.0 25.2r 17BJ231 T09 C~7xTm 2016 12 25.57937 09 59 30.32 +02 29 56.3 25.2i 17BJ231 T09 C~7xTm 2016 12 25.58308 09 59 30.32 +02 29 56.5 25.1i 17BJ231 T09 C~7xTm 2016 12 25.60159 09 59 30.25 +02 29 56.0 25.4i 17BJ231 T09 C~7xTm 2016 12 25.60536 09 59 30.24 +02 29 56.1 25.0i 17BJ231 T09 C~7xTm 2016 12 25.62385 09 59 30.21 +02 29 56.1 25.1i 17BJ231 T09 C~7xTm 2017 01 02.43785 09 59 08.24 +02 30 19.2 24.6z 17BJ231 T09 C~7xTm 2017 01 02.44565 09 59 08.23 +02 30 18.9 25.2z 17BJ231 T09 C~7xTm 2017 01 02.45714 09 59 08.18 +02 30 19.4 25.1z 17BJ231 T09 C~7xTm 2017 01 02.46097 09 59 08.18 +02 30 19.5 25.0z 17BJ231 T09 C~7xTm 2017 01 02.49315 09 59 08.07 +02 30 19.4 25.2i 17BJ231 T09 C~7xTm 2017 01 02.50080 09 59 08.03 +02 30 19.7 25.0i 17BJ231 T09 C~7xTm 2017 01 02.51228 09 59 07.99 +02 30 19.9 25.3i 17BJ231 T09 C~7xTm 2017 01 02.51993 09 59 07.98 +02 30 19.7 25.6i 17BJ231 T09 C~7xTm 2017 01 02.53399 09 59 07.95 +02 30 19.7 25.9i 17BJ231 T09 C~7xTm 2017 01 02.55218 09 59 07.89 +02 30 19.9 24.8i 17BJ231 T09 C~7xTm 2017 01 02.58611 09 59 07.78 +02 30 20.2 25.3g 17BJ231 T09 C~7xTm 2017 01 02.60039 09 59 07.73 +02 30 20.0 25.7g 17BJ231 T09 C~7xTm 2017 01 02.60370 09 59 07.71 +02 30 19.9 25.5g 17BJ231 T09 C~7xTm 2017 01 02.61463 09 59 07.69 +02 30 20.0 25.7g 17BJ231 T09 C~7xTm 2017 01 21.45233 09 57 56.79 +02 33 44.7 25.4z 17BJ231 T09 C~7xTm 2017 01 21.47486 09 57 56.68 +02 33 44.8 25.1z 17BJ231 T09 C~81Bm 2017 01 21.48947 09 57 56.63 +02 33 45.4 25.5z 17BJ231 T09 C~7xTm 2017 01 21.49713 09 57 56.59 +02 33 45.3 24.9z 17BJ231 T09 C~81Bm 2017 01 21.50089 09 57 56.58 +02 33 45.7 25.6z 17BJ231 T09 C~81Bm 2017 01 21.51563 09 57 56.51 +02 33 45.7 25.1z 17BJ231 T09 C~7xTm 2017 01 21.51947 09 57 56.48 +02 33 45.8 25.5z 17BJ231 T09 C~81Bm 2017 01 21.52708 09 57 56.47 +02 33 45.7 25.4z 17BJ231 T09 C~7xTm 2017 01 21.54935 09 57 56.35 +02 33 46.4 25.6z 17BJ231 T09 C~7xTm 2017 01 23.37416 09 57 48.40 +02 34 16.7 25.4r 17BJ231 T09 C~7xTm 2017 01 23.37982 09 57 48.38 +02 34 16.3 25.7r 17BJ231 T09 C~7xTm 2017 01 23.38565 09 57 48.37 +02 34 16.5 26.3r 17BJ231 T09 C~7xTm 2017 01 23.39955 09 57 48.30 +02 34 17.0 25.9r 17BJ231 T09 C~7xTm 2017 01 23.40271 09 57 48.29 +02 34 16.7 26.2r 17BJ231 T09 C~7xTm 2017 01 23.41678 09 57 48.24 +02 34 17.2 25.5r 17BJ231 T09 C~7xTm 2017 01 23.43372 09 57 48.17 +02 34 17.2 26.1r 17BJ231 T09 C~7xTm 2017 01 23.44310 09 57 48.13 +02 34 17.4 26.4r 17BJ231 T09 C~7xTm 2017 01 23.49071 09 57 47.91 +02 34 18.4 25.4i 17BJ231 T09 C~7xTm 2017 01 23.50215 09 57 47.85 +02 34 18.7 26.0i 17BJ231 T09 C~7xTm 2017 01 23.50600 09 57 47.85 +02 34 18.7 25.1i 17BJ231 T09 C~7xTm 2017 01 23.50979 09 57 47.82 +02 34 18.7 25.3i 17BJ231 T09 C~7xTm 2017 01 23.53190 09 57 47.72 +02 34 19.1 25.7i 17BJ231 T09 C~7xTm 2017 01 23.55094 09 57 47.62 +02 34 19.3 25.4i 17BJ231 T09 C~7xTm 2017 01 23.56544 09 57 47.58 +02 34 19.3 24.8i 17BJ231 T09 C~7xTm 2017 01 23.56929 09 57 47.55 +02 34 19.7 25.8i 17BJ231 T09 C~7xTm 2017 01 23.58131 09 57 47.49 +02 34 20.0 25.6i 17BJ231 T09 C~7xTm 2017 01 30.40627 09 57 16.52 +02 36 26.8 25.8i 17BJ231 T09 C~7xTm 2017 01 30.42829 09 57 16.41 +02 36 27.5 25.7i 17BJ231 T09 C~7xTm 2017 01 30.52066 09 57 15.98 +02 36 29.3 26.3z 17BJ231 T09 C~7xTm 2017 01 30.55762 09 57 15.81 +02 36 30.3 25.6z 17BJ231 T09 C~7xTm 2017 01 30.58347 09 57 15.67 +02 36 30.7 25.3z 17BJ231 T09 C~7xTm 2017 02 02.43265 09 57 02.25 +02 37 30.2 26.3r 17BJ231 T09 C~7xTm 2017 02 02.44732 09 57 02.20 +02 37 30.5 25.9r 17BJ231 T09 C~7xTm 2017 02 02.46207 09 57 02.12 +02 37 30.9 26.4r 17BJ231 T09 C~7xTm 2017 02 23.47596 09 55 19.67 +02 46 18.7 25.4r 17BJ231 T09 C~7xTm 2017 02 23.48959 09 55 19.65 +02 46 19.1 25.4r 17BJ231 T09 C~7xTm 2017 02 23.50705 09 55 19.53 +02 46 19.2 25.1r 17BJ231 T09 C~7xTm 2019 02 05.366397 10 09 20.47 +01 30 10.4 17BJ231 T09 C~81Bm 2019 02 05.409268 10 09 20.26 +01 30 11.2 17BJ231 T09 C~81Bm 2019 02 05.422693 10 09 20.18 +01 30 11.6 17BJ231 T09 C~81Bm 2019 05 09.356870 10 04 03.21 +02 11 02.7 17BJ231 T09 C~81Bm 2019 05 09.378507 10 04 03.20 +02 11 03.1 17BJ231 T09 C~81Bm
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 0.38
2 0.0001 0.56 0.05 -1.07 -0.08
3 0.0001 0.56 -0.02 -1.07 0.04
4 0.0001 0.66 0.04 -1.35 -0.19
5 0.0002 0.70 0.04 -1.02 0.20
6 0.0002 0.87 0.14 -1.49 -0.15
7 0.0002 0.87 0.10 -1.49 -0.09
8 0.0002 0.80 -0.01 -1.30 0.15
9 0.0002 0.77 -0.09 -1.63 -0.12
10 0.0083 27.24 0.23 -44.39 -0.26
11 0.0083 27.03 0.00 -44.25 -0.07
12 0.0083 26.96 -0.09 -44.06 0.17
13 0.0083 27.24 0.17 -44.39 -0.09
14 0.0083 27.24 0.15 -44.39 -0.04
15 0.0083 27.27 0.17 -44.48 -0.07
16 0.0109 32.61 0.18 -57.54 0.17
17 0.0109 32.68 0.23 -57.72 0.04
18 0.0109 32.54 0.08 -57.78 0.04
19 0.0109 32.33 -0.15 -58.07 -0.19
20 0.0109 32.05 -0.46 -57.75 0.24
21 0.0109 32.58 0.05 -58.30 -0.25
22 0.0110 32.72 0.18 -58.25 -0.14
23 0.0110 32.54 -0.09 -58.63 -0.18
24 0.0820 -368.61 0.30 -413.56 -0.19
25 0.0820 -368.89 0.14 -413.24 0.17
26 0.0820 -369.52 -0.10 -413.69 -0.14
27 0.0821 -369.95 -0.02 -413.85 -0.11
28 0.0821 -370.05 -0.01 -413.56 0.21
29 0.0821 -370.44 -0.01 -413.82 0.10
30 0.0822 -371.66 -0.14 -413.95 0.35
31 0.0822 -371.73 ( -0.08) -413.76 ( 0.59)
32 0.0822 -372.54 -0.21 -414.60 -0.01
33 0.0823 -372.72 -0.25 -414.56 0.08
34 0.0823 -373.14 0.00 -414.71 0.16
35 0.1037 -689.76 -0.14 -507.89 -0.08
36 0.1037 -689.80 0.18 -508.22 -0.32
37 0.1038 -690.68 -0.16 -508.01 0.02
38 0.1038 -690.71 -0.01 -507.92 0.16
39 0.1039 -692.22 -0.01 -508.59 -0.14
40 0.1039 -692.89 -0.32 -508.52 0.02
41 0.1039 -693.52 -0.41 -508.54 0.14
42 0.1039 -693.59 -0.12 -508.78 -0.01
43 0.1040 -694.01 0.12 -508.93 -0.01
44 0.1040 -694.92 0.06 -509.06 0.08
45 0.1041 -696.57 0.01 -509.35 0.19
46 0.1041 -697.21 0.05 -509.80 -0.09
47 0.1042 -697.45 -0.04 -510.00 -0.25
48 0.1042 -697.77 0.16 -510.01 -0.14
49 0.1558 -1764.98 0.08 -688.55 0.04
50 0.1558 -1766.56 0.02 -689.03 -0.26
51 0.1559 -1767.48 0.09 -688.73 0.15
52 0.1559 -1768.00 0.08 -689.03 -0.09
53 0.1559 -1768.28 0.05 -688.71 0.26
54 0.1559 -1769.27 0.06 -689.07 0.02
55 0.1559 -1769.72 -0.13 -689.14 -0.02
56 0.1560 -1769.83 0.27 -689.28 -0.10
57 0.1560 -1771.76 -0.15 -689.25 0.11
58 0.1610 -1893.99 -0.50 -702.37 0.24
59 0.1610 -1894.13 -0.25 -702.85 -0.20
60 0.1611 -1894.34 -0.06 -702.71 -0.02
61 0.1611 -1895.50 -0.27 -702.61 0.18
62 0.1611 -1895.54 -0.08 -702.94 -0.13
63 0.1611 -1896.41 0.01 -702.74 0.19
64 0.1612 -1897.40 0.19 -703.10 -0.05
65 0.1612 -1898.03 0.20 -703.12 -0.00
66 0.1613 -1901.47 0.05 -703.34 0.14
67 0.1614 -1902.41 -0.11 -703.37 0.20
68 0.1614 -1902.41 0.16 -703.37 0.23
69 0.1614 -1902.83 -0.00 -703.52 0.10
70 0.1615 -1904.38 -0.02 -703.67 0.12
71 0.1615 -1905.85 -0.18 -704.01 -0.08
72 0.1615 -1906.41 0.26 -704.22 -0.17
73 0.1616 -1906.98 -0.04 -704.00 0.07
74 0.1616 -1907.92 -0.16 -704.03 0.13
75 0.1803 -2387.15 0.20 -746.88 -0.30
76 0.1803 -2388.94 0.03 -746.80 -0.09
77 0.1806 -2395.61 0.19 -747.35 -0.10
78 0.1807 -2398.35 0.18 -747.30 0.16
79 0.1808 -2400.45 -0.02 -747.66 -0.04
80 0.1886 -2609.71 -0.18 -761.94 -0.17
81 0.1886 -2610.51 0.12 -761.92 -0.08
82 0.1886 -2611.78 -0.03 -761.96 -0.05
83 0.2462 -4235.01 -0.31 -801.68 -0.03
84 0.2462 -4235.43 0.35 -801.41 0.24
85 0.2463 -4237.15 0.01 -801.94 -0.30
86 2.1952 9176.55 0.10 -681.47 0.20
87 2.1953 9173.31 0.09 -681.83 0.03
88 2.1954 9172.05 -0.17 -681.87 0.05
89 2.4498 3857.11 0.06 -48.06 -0.15
90 2.4499 3856.83 -0.05 -47.74 -0.12
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.
17BJ231 quality flag:3 Type: 2:1E 2:1E 2:1E axisobj 47.802 47.822 47.783 ecceobj 0.188 0.188 0.188 incobj 9.040 9.040 9.040 qmin 36.436 37.043 36.180 qmax 59.911 59.259 60.172 amean 47.797 47.795 47.796 amin 47.210 47.228 47.207 amax 48.459 48.447 48.457 emean 0.213 0.189 0.217 emin 0.174 0.150 0.177 emax 0.237 0.225 0.243 imean 7.858 9.740 7.525 imin 7.086 8.846 6.548 imax 10.166 10.522 10.168 excite_mean 0.254 0.254 0.254 fracstop 1.000 1.000 1.000 cjmean 3.068 3.068 3.067 libcent 0 103.4 180.1 101.7 libamp 0 64.2 142.8 63.5 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 322.6 225.0 322.1 kozaiamp 32.6 180.0 34.0