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: 17BD230 # Created Tue Apr 1 01:11:00 2025 # Orbit generated from Bernstein formalism # Fitting 63 observations of 65 # Arc: 2.28y # First observation: 2016/12/23 # Last observation: 2019/04/05 Preliminary a, adot, b, bdot, g, gdot: -0.000022 0.018758 0.000001 0.003235 0.021390 0.000000 # Chi-squared of fit: 44.14 DOF: 120 RMS: 0.15 # Min/Max residuals: -0.52 0.41 # Exact a, adot, b, bdot, g, gdot: 1.221650E-05 1.875582E-02 1.819951E-06 3.252782E-03 2.128038E-02 7.586865E-03 # Covariance matrix: 1.0297E-13 1.0468E-13 5.3130E-15 2.6023E-14 1.5502E-13 4.2035E-12 1.0468E-13 6.5840E-13 1.6981E-15 1.5333E-13 3.9322E-13 2.4985E-11 5.3130E-15 1.6981E-15 3.2069E-14 -1.7965E-14 9.2289E-15 -9.1498E-15 2.6023E-14 1.5333E-13 -1.7965E-14 7.6390E-14 9.0179E-14 6.2426E-12 1.5502E-13 3.9322E-13 9.2289E-15 9.0179E-14 3.7586E-13 1.4634E-11 4.2035E-12 2.4985E-11 -9.1498E-15 6.2426E-12 1.4634E-11 1.0178E-09 # lat0 lon0 xBary yBary zBary JD0 -8.595387 152.244826 0.860426 -0.072206 -0.479027 2457745.969459 # Heliocentric elements and errors Epoch: 2457740.5000 = 2016/12/18 Mean Anomaly: 51.43064 +/- 0.142 Argument of Peri: 224.69107 +/- 0.027 Long of Asc Node: 192.54107 +/- 0.002 Inclination: 12.75861 +/- 0.000 Eccentricity: 0.36830363 +/- 0.0016 Semi-Major Axis: 53.78099419 +/- 0.0775 Time of Perihelion: 2437159.7547 +/- 35.6 Perihelion: 33.97325867 +/- 0.1000 Aphelion: 73.58872971 +/- 0.1373 Period (y) 394.4132 +/- 0.85 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X -41.14967682 +/- 0.0012 Ecliptic Y 22.62060837 +/- 0.0006 Ecliptic Z -7.02312817 +/- 0.0002 Ecliptic XDOT -0.00203064 +/- 0.0000 Ecliptic YDOT -0.00166355 +/- 0.0000 Ecliptic ZDOT 0.00026786 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 47.47959724 +/- 0.0011 Geocenter to KBO 46.99164779 +/- 0.0014 # Hcoef: 8.27
The following table shows the complete astrometric record for 17BD230. 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 (17BD230) followed by the observatory code and reference code for the source of the astrometry.
2016 12 23.46867 10 04 37.40 +02 38 19.6 24.2z 17BD230 T09 C~7uj9 2016 12 23.51848 10 04 37.28 +02 38 19.8 24.0z 17BD230 T09 C~7uj9 2016 12 23.58951 10 04 37.13 +02 38 19.8 24.7z 17BD230 T09 C~7uj9 2017 01 02.54410 10 04 14.63 +02 39 06.0 25.2i 17BD230 T09 C~7uj9 2017 01 02.55486 10 04 14.60 +02 39 06.0 25.2i 17BD230 T09 C~7uj9 2017 01 02.59203 10 04 14.51 +02 39 06.2 24.9g 17BD230 T09 C~7uj9 2017 01 02.60627 10 04 14.47 +02 39 06.3 25.0g 17BD230 T09 C~7uj9 2017 01 02.62041 10 04 14.42 +02 39 06.5 25.9g 17BD230 T09 C~7uj9 2017 01 21.42049 10 03 15.86 +02 42 43.7 24.3z 17BD230 T09 C~7uj9 2017 01 21.43262 10 03 15.80 +02 42 43.4 24.6z 17BD230 T09 C~7uj9 2017 01 21.44467 10 03 15.77 +02 42 43.9 25.2z 17BD230 T09 C~7uj9 2017 01 21.47848 10 03 15.62 +02 42 44.2 25.0z 17BD230 T09 C~7uj9 2017 01 21.50455 10 03 15.53 +02 42 44.6 24.0z 17BD230 T09 C~7uj9 2017 01 21.55293 10 03 15.34 +02 42 45.6 24.9z 17BD230 T09 C~7uj9 2017 01 21.58402 10 03 15.23 +02 42 46.1 25.0z 17BD230 T09 C~7uj9 2017 01 23.35198 10 03 08.90 +02 43 14.5 25.7r 17BD230 T09 C~7uj9 2017 01 23.39135 10 03 08.74 +02 43 14.9 24.7r 17BD230 T09 C~7uj9 2017 01 23.40520 10 03 08.67 +02 43 15.0 24.5r 17BD230 T09 C~7uj9 2017 01 23.41887 10 03 08.63 +02 43 15.4 24.5r 17BD230 T09 C~7uj9 2017 01 23.43584 10 03 08.53 +02 43 15.9 25.0r 17BD230 T09 C~7uj9 2017 01 23.45863 10 03 08.48 +02 43 16.2 25.1r 17BD230 T09 C~7ujA 2017 01 23.58486 10 03 08.02 +02 43 18.2 24.5i 17BD230 T09 C~7ujA 2017 01 30.40987 10 02 42.29 +02 45 20.0 25.4i 17BD230 T09 C~7ujA 2017 01 30.46494 10 02 42.06 +02 45 21.2 24.8i 17BD230 T09 C~7ujA 2017 01 30.49820 10 02 41.93 +02 45 22.2 24.8z 17BD230 T09 C~7ujA 2017 01 30.53514 10 02 41.79 +02 45 22.7 24.6z 17BD230 T09 C~7ujA 2017 01 30.54618 10 02 41.74 +02 45 22.7 25.9z 17BD230 T09 C~7ujA 2017 01 30.55001 10 02 41.71 +02 45 22.8 25.3z 17BD230 T09 C~7ujA 2017 02 02.43533 10 02 30.43 +02 46 19.5 24.6r 17BD230 T09 C~7ujA 2017 02 02.44397 10 02 30.41 +02 46 19.7 25.1r 17BD230 T09 C~7ujA 2017 02 02.45004 10 02 30.38 +02 46 19.7 25.1r 17BD230 T09 C~7ujA 2017 02 02.46478 10 02 30.32 +02 46 20.0 25.4r 17BD230 T09 C~7ujA 2017 02 02.57966 10 02 29.85 +02 46 22.4 24.9i 17BD230 T09 C~7ujA 2017 02 02.59901 10 02 29.79 +02 46 22.7 25.0i 17BD230 T09 C~7ujA 2017 02 23.46476 10 01 04.81 +02 54 24.0 24.6r 17BD230 T09 C~7ujA 2017 02 23.47842 10 01 04.77 +02 54 24.2 24.8r 17BD230 T09 C~7ujA 2017 02 23.50949 10 01 04.62 +02 54 25.2 25.1r 17BD230 T09 C~7ujA 2017 02 25.30306 10 00 57.32 +02 55 10.7 25.2i 17BD230 T09 C~7ujA 2017 02 25.36493 10 00 57.07 +02 55 12.2 24.1i 17BD230 T09 C~7ujA 2017 02 25.41636 10 00 56.86 +02 55 13.7 24.5i 17BD230 T09 C~7ujA 2017 02 25.42020 10 00 56.83 +02 55 13.9 24.4i 17BD230 T09 C~7ujA 2017 02 25.42768 10 00 56.82 +02 55 14.2 25.2i 17BD230 T09 C~7ujA 2017 02 25.43849 10 00 56.77 +02 55 14.4 24.3i 17BD230 T09 C~7ujA 2017 03 04.31098 10 00 29.25 +02 58 13.5 25.1z 17BD230 T09 C~7ujA 2017 03 04.45244 10 00 28.71 +02 58 17.0 24.6i 17BD230 T09 C~7ujA 2017 03 04.47080 10 00 28.63 +02 58 17.5 24.7i 17BD230 T09 C~7ujA 2017 03 06.50200 10 00 20.70 +02 59 11.2 25.1r 17BD230 T09 C~7ujA 2017 03 06.51016 10 00 20.66 +02 59 11.7 23.9r 17BD230 T09 C~7ujA 2017 03 06.52710 10 00 20.61 +02 59 11.9 24.6r 17BD230 T09 C~7ujA 2017 03 06.53779 10 00 20.57 +02 59 12.1 24.4r 17BD230 T09 C~7ujA 2017 03 25.24137 09 59 14.18 +03 07 28.1 25.5r 17BD230 T09 C~7ujA 2017 03 25.26876 09 59 14.10 +03 07 28.6 24.7r 17BD230 T09 C~7ujA 2017 03 25.29622 09 59 14.01 +03 07 29.5 25.5r 17BD230 T09 C~7ujA 2019 02 05.36684 10 10 54.82 +02 22 30.1 25.7i 17BD230 T09 C~7wNx 2019 02 05.38299 10 10 54.77 +02 22 30.6 25.0i 17BD230 T09 C~7wNx 2019 02 05.39635 10 10 54.71 +02 22 30.6 24.6i 17BD230 T09 C~7wNx 2019 02 05.40971 10 10 54.65 +02 22 31.1 24.8i 17BD230 T09 C~7wNx 2019 02 05.43397 10 10 54.57 +02 22 31.6 25.1i 17BD230 T09 C~7wNx 2019 03 03.28745 10 09 10.97 +02 32 47.6 24.3z 17BD230 T09 C~7wNx 2019 03 03.29758 10 09 10.94 +02 32 48.1 25.2z 17BD230 T09 C~7wNx 2019 03 03.32504 10 09 10.82 +02 32 48.9 24.8z 17BD230 T09 C~7wNx 2019 03 03.32771 10 09 10.79 +02 32 49.6 24.9z 17BD230 T09 C~7wNx 2019 04 05.34328 10 07 18.23 +02 47 10.1 26.2r 17BD230 T09 C~7wNx 2019 04 05.36539 10 07 18.16 +02 47 10.5 25.3r 17BD230 T09 C~7wNx 2019 04 05.37599 10 07 18.15 +02 47 10.6 25.6r 17BD230 T09 C~7wNx
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 0.35 0.00 0.12
2 0.0001 -1.75 0.01 -0.45 0.10
3 0.0003 -3.86 -0.06 -1.24 -0.09
4 0.0276 -335.65 -0.01 -76.79 -0.05
5 0.0276 -336.08 -0.01 -76.95 -0.13
6 0.0277 -337.41 0.14 -77.24 -0.15
7 0.0278 -338.00 0.12 -77.36 -0.16
8 0.0278 -338.78 -0.09 -77.43 -0.13
9 0.0793 -1236.50 ( 0.16) -183.20 ( 0.45)
10 0.0793 -1237.24 0.11 -183.80 -0.09
11 0.0793 -1237.83 0.19 -183.49 0.27
12 0.0794 -1240.04 -0.11 -184.00 -0.08
13 0.0795 -1241.45 -0.03 -184.10 -0.07
14 0.0796 -1244.46 -0.30 -184.17 0.09
15 0.0797 -1246.18 -0.26 -184.28 0.12
16 0.0846 -1344.96 0.32 -191.10 0.28
17 0.0847 -1347.34 0.21 -191.57 -0.03
18 0.0847 -1348.36 -0.01 -191.84 -0.24
19 0.0847 -1349.06 0.08 -191.68 -0.02
20 0.0848 -1350.64 -0.52 -191.74 -0.01
21 0.0848 -1351.44 -0.00 -191.72 0.10
22 0.0852 -1358.60 0.17 -192.28 0.07
23 0.1039 -1762.33 0.12 -214.00 -0.00
24 0.1040 -1765.98 -0.11 -214.09 0.07
25 0.1041 -1768.16 -0.22 -213.84 0.41
26 0.1042 -1770.29 -0.06 -214.11 0.25
27 0.1043 -1771.00 -0.07 -214.37 0.02
28 0.1043 -1771.45 -0.29 -214.44 -0.03
29 0.1122 -1949.61 -0.14 -220.85 -0.01
30 0.1122 -1949.96 0.06 -220.77 0.09
31 0.1122 -1950.38 0.02 -220.93 -0.05
32 0.1122 -1951.33 0.01 -220.97 -0.05
33 0.1126 -1958.77 -0.13 -221.20 -0.02
34 0.1126 -1959.71 0.15 -221.23 -0.01
35 0.1697 -3321.01 0.05 -218.64 -0.01
36 0.1698 -3321.65 0.34 -218.67 -0.06
37 0.1699 -3324.10 -0.03 -218.52 0.03
38 0.1748 -3442.51 -0.09 -214.39 -0.21
39 0.1749 -3446.54 0.02 -214.30 -0.27
40 0.1751 -3450.02 -0.01 -214.00 -0.08
41 0.1751 -3450.51 -0.24 -213.97 -0.06
42 0.1751 -3450.75 0.01 -213.74 0.15
43 0.1751 -3451.52 -0.03 -213.82 0.05
44 0.1940 -3900.57 -0.29 -191.11 0.06
45 0.1943 -3909.38 0.16 -190.68 -0.02
46 0.1944 -3910.68 0.06 -190.63 -0.04
47 0.2000 -4040.81 0.11 -182.12 -0.06
48 0.2000 -4041.55 -0.10 -181.86 0.16
49 0.2000 -4042.32 0.22 -181.93 0.01
50 0.2001 -4042.95 0.27 -181.96 -0.05
51 0.2513 -5148.81 -0.12 -67.02 -0.01
52 0.2513 -5150.11 0.06 -66.97 -0.16
53 0.2514 -5151.69 -0.03 -66.60 0.00
54 2.1188 5628.45 -0.03 1108.17 -0.07
55 2.1189 5627.57 0.10 1108.38 0.16
56 2.1189 5626.73 0.10 1108.06 -0.14
57 2.1189 5625.71 -0.08 1108.21 0.04
58 2.1190 5624.41 0.15 1108.25 0.12
59 2.1898 3953.40 -0.12 1135.78 -0.15
60 2.1898 3952.80 -0.06 1136.09 0.13
61 2.1899 3950.84 -0.23 1136.21 0.15
62 2.1899 3950.17 ( -0.72) 1136.70 ( 0.64)
63 2.2803 2067.96 0.01 1346.26 0.07
64 2.2803 2066.84 -0.08 1346.26 -0.12
65 2.2804 2066.67 0.24 1346.31 -0.17
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.
17BD230 quality flag:3 Type: SCATNEAR SCATNEAR SCATNEAR axisobj 53.807 54.026 53.591 ecceobj 0.373 0.378 0.369 incobj 12.804 12.803 12.804 qmin 32.970 32.395 32.497 qmax 75.235 78.486 78.497 amean 53.572 53.967 54.319 amin 52.819 52.225 52.758 amax 54.430 55.721 55.804 emean 0.364 0.379 0.381 emin 0.343 0.352 0.355 emax 0.383 0.409 0.407 imean 13.725 13.268 12.972 imin 12.101 11.540 11.705 imax 15.085 14.804 14.368 excite_mean 0.435 0.443 0.442 fracstop 1.000 1.000 1.000 cjmean 2.976 2.969 2.974 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 176.8 184.1 184.6 kozaiamp 180.0 180.0 180.0