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: 17BH230 # Created Sun Dec 22 02:10:54 2024 # Orbit generated from Bernstein formalism # Fitting 58 observations of 58 # Arc: 2.46y # First observation: 2016/11/23 # Last observation: 2019/05/09 Preliminary a, adot, b, bdot, g, gdot: 0.000014 0.015467 0.000010 0.009034 0.020611 0.000000 # Chi-squared of fit: 42.32 DOF: 110 RMS: 0.15 # Min/Max residuals: -0.64 0.40 # Exact a, adot, b, bdot, g, gdot: 1.194127E-05 1.515883E-02 7.937036E-06 8.882949E-03 2.019929E-02 -9.983309E-04 # Covariance matrix: 1.8369E-13 1.5532E-13 1.7636E-14 1.4863E-13 3.0830E-13 7.5304E-12 1.5532E-13 2.8471E-13 -1.1039E-15 3.3413E-13 4.1434E-13 1.6736E-11 1.7636E-14 -1.1039E-15 5.4514E-14 -7.8641E-14 1.9816E-14 -2.8710E-12 1.4863E-13 3.3413E-13 -7.8641E-14 6.9237E-13 4.4233E-13 3.3179E-11 3.0830E-13 4.1434E-13 1.9816E-14 4.4233E-13 6.9405E-13 2.2256E-11 7.5304E-12 1.6736E-11 -2.8710E-12 3.3179E-11 2.2256E-11 1.6488E-09 # lat0 lon0 xBary yBary zBary JD0 -10.221307 151.335991 0.992285 -0.000004 -0.001125 2457716.074669 # Heliocentric elements and errors Epoch: 2457710.5000 = 2016/11/18 Mean Anomaly: 243.81087 +/- 0.793 Argument of Peri: 105.02217 +/- 0.771 Long of Asc Node: 167.17580 +/- 0.000 Inclination: 31.65543 +/- 0.001 Eccentricity: 0.08808781 +/- 0.0018 Semi-Major Axis: 47.39853636 +/- 0.0135 Time of Perihelion: 2496179.3162 +/- 262.1 Perihelion: 43.22330327 +/- 0.0884 Aphelion: 51.57376945 +/- 0.0888 Period (y) 326.3289 +/- 0.14 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X -42.27895451 +/- 0.0018 Ecliptic Y 24.23716699 +/- 0.0010 Ecliptic Z -8.78464897 +/- 0.0004 Ecliptic XDOT -0.00105387 +/- 0.0000 Ecliptic YDOT -0.00177099 +/- 0.0000 Ecliptic ZDOT 0.00120887 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 49.51888848 +/- 0.0016 Geocenter to KBO 49.50669018 +/- 0.0020 # Hcoef: 8.10
The following table shows the complete astrometric record for 17BH230. 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 (17BH230) followed by the observatory code and reference code for the source of the astrometry.
2016 11 23.57388 09 58 58.80 +01 25 50.3 25.1z 17BH230 T09 C~7ujA 2016 11 23.64188 09 58 58.81 +01 25 49.8 24.5y 17BH230 T09 C~7ujA 2016 11 23.64954 09 58 58.82 +01 25 49.8 25.2y 17BH230 T09 C~7ujA 2016 12 25.51570 09 58 28.98 +01 24 29.2 25.6r 17BH230 T09 C~7ujA 2016 12 25.54359 09 58 28.91 +01 24 29.6 25.8r 17BH230 T09 C~7ujA 2016 12 25.59037 09 58 28.81 +01 24 29.9 25.5i 17BH230 T09 C~7ujA 2017 01 21.43628 09 57 11.81 +01 29 46.4 24.2z 17BH230 T09 C~7ujA 2017 01 21.48215 09 57 11.65 +01 29 47.3 23.9z 17BH230 T09 C~7ujA 2017 01 21.50822 09 57 11.55 +01 29 47.6 24.3z 17BH230 T09 C~7ujA 2017 01 21.53429 09 57 11.45 +01 29 48.1 24.6z 17BH230 T09 C~7ujA 2017 01 23.36023 09 57 04.99 +01 30 21.2 25.3r 17BH230 T09 C~7ujA 2017 01 23.40775 09 57 04.82 +01 30 22.2 25.1r 17BH230 T09 C~7ujA 2017 01 23.41253 09 57 04.80 +01 30 22.4 25.5r 17BH230 T09 C~7wNx 2017 01 23.42739 09 57 04.74 +01 30 22.5 25.5r 17BH230 T09 C~7wNx 2017 01 23.48266 09 57 04.55 +01 30 23.7 24.7i 17BH230 T09 C~7wNx 2017 01 23.51704 09 57 04.42 +01 30 24.2 24.5i 17BH230 T09 C~7ujA 2017 01 23.52381 09 57 04.38 +01 30 24.4 25.1i 17BH230 T09 C~7wNx 2017 01 23.53190 09 57 04.37 +01 30 24.6 25.3i 17BH230 T09 C~7wNx 2017 01 23.55808 09 57 04.28 +01 30 25.4 25.3i 17BH230 T09 C~7ujA 2017 01 23.58838 09 57 04.17 +01 30 25.6 24.6i 17BH230 T09 C~7ujA 2017 01 30.41352 09 56 39.01 +01 32 42.7 24.4i 17BH230 T09 C~7ujA 2017 01 30.43553 09 56 38.92 +01 32 43.1 24.5i 17BH230 T09 C~7ujA 2017 01 30.45764 09 56 38.82 +01 32 43.6 24.9i 17BH230 T09 C~7ujA 2017 01 30.50184 09 56 38.65 +01 32 44.9 24.5z 17BH230 T09 C~7ujA 2017 01 30.52778 09 56 38.55 +01 32 45.4 24.7z 17BH230 T09 C~7ujA 2017 01 30.56478 09 56 38.43 +01 32 46.2 24.4z 17BH230 T09 C~7ujA 2017 01 30.59058 09 56 38.34 +01 32 46.4 24.9z 17BH230 T09 C~7ujA 2017 01 30.61243 09 56 38.25 +01 32 47.1 24.9z 17BH230 T09 C~7ujA 2017 02 02.38640 09 56 27.65 +01 33 48.1 25.1r 17BH230 T09 C~7ujA 2017 02 02.56862 09 56 26.95 +01 33 52.1 24.5i 17BH230 T09 C~7ujA 2017 02 02.57136 09 56 26.95 +01 33 52.1 24.0i 17BH230 T09 C~7ujA 2017 02 02.58800 09 56 26.88 +01 33 52.8 24.6i 17BH230 T09 C~7ujA 2017 02 21.32404 09 55 13.01 +01 41 46.8 24.2z 17BH230 T09 C~7ujA 2017 02 21.34959 09 55 12.93 +01 41 47.3 24.4z 17BH230 T09 C~7ujA 2017 02 21.37516 09 55 12.79 +01 41 48.3 24.9z 17BH230 T09 C~7ujA 2017 02 21.40083 09 55 12.67 +01 41 49.1 24.8z 17BH230 T09 C~7ujA 2017 02 21.42282 09 55 12.63 +01 41 49.5 24.5z 17BH230 T09 C~7ujA 2017 02 23.31993 09 55 05.15 +01 42 42.4 25.9g 17BH230 T09 C~7ujA 2017 02 23.33356 09 55 05.10 +01 42 42.7 25.7g 17BH230 T09 C~7ujA 2017 02 23.46720 09 55 04.56 +01 42 46.4 25.5r 17BH230 T09 C~7ujA 2017 02 23.51193 09 55 04.39 +01 42 47.6 25.5r 17BH230 T09 C~7ujA 2019 02 28.351994 10 02 54.11 +02 06 06.6 17BH230 T09 C~81Bm 2019 02 28.386467 10 02 53.97 +02 06 07.5 17BH230 T09 C~81Bm 2019 04 04.28639 10 00 56.79 +02 23 11.8 25.7g 17BH230 T09 C~81Bm 2019 04 04.29405 10 00 56.75 +02 23 12.1 25.5g 17BH230 T09 C~81Bm 2019 04 04.29788 10 00 56.73 +02 23 12.1 25.1g 17BH230 T09 C~81Bm 2019 04 04.30170 10 00 56.73 +02 23 12.3 25.3g 17BH230 T09 C~81Bm 2019 04 04.30936 10 00 56.71 +02 23 12.4 25.3g 17BH230 T09 C~81Bm 2019 04 04.31319 10 00 56.71 +02 23 12.6 25.5g 17BH230 T09 C~81Bm 2019 04 04.31702 10 00 56.69 +02 23 12.8 24.8g 17BH230 T09 C~81Bm 2019 04 04.32085 10 00 56.69 +02 23 12.8 25.6g 17BH230 T09 C~81Bm 2019 04 04.32852 10 00 56.67 +02 23 13.1 26.0g 17BH230 T09 C~81Bm 2019 04 04.33235 10 00 56.65 +02 23 13.3 25.2g 17BH230 T09 C~81Bm 2019 04 04.33618 10 00 56.63 +02 23 13.5 25.8g 17BH230 T09 C~81Bm 2019 04 04.34001 10 00 56.63 +02 23 13.6 25.4g 17BH230 T09 C~81Bm 2019 04 04.34384 10 00 56.63 +02 23 13.8 25.7g 17BH230 T09 C~81Bm 2019 05 09.238093 10 00 07.15 +02 36 57.6 17BH230 T09 C~81Bm 2019 05 09.385989 10 00 07.11 +02 37 00.2 17BH230 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 -0.02 0.00 -0.20
2 0.0002 0.32 -0.16 -0.42 -0.06
3 0.0002 0.46 -0.07 -0.36 0.05
4 0.0875 -390.72 0.13 -232.11 -0.18
5 0.0875 -391.84 -0.10 -232.10 0.00
6 0.0877 -393.35 -0.10 -232.34 0.06
7 0.1612 -1585.87 0.04 -338.74 0.23
8 0.1613 -1588.43 0.07 -338.73 0.32
9 0.1614 -1589.94 0.03 -338.97 0.13
10 0.1614 -1591.52 -0.07 -339.03 0.13
11 0.1664 -1693.85 0.02 -341.81 -0.16
12 0.1666 -1696.59 0.02 -341.76 -0.04
13 0.1666 -1696.94 -0.06 -341.68 0.05
14 0.1666 -1697.82 -0.08 -341.90 -0.15
15 0.1668 -1700.91 0.03 -341.77 0.06
16 0.1669 -1702.91 0.01 -341.98 -0.10
17 0.1669 -1703.54 -0.23 -342.00 -0.11
18 0.1669 -1703.75 0.03 -341.87 0.04
19 0.1670 -1705.30 0.00 -341.59 0.36
20 0.1670 -1706.91 0.14 -341.98 0.02
21 0.1857 -2108.34 0.20 -345.13 -0.12
22 0.1858 -2109.74 0.15 -345.23 -0.21
23 0.1859 -2111.32 -0.06 -345.28 -0.26
24 0.1860 -2114.17 -0.18 -344.95 0.07
25 0.1860 -2115.75 -0.16 -345.01 0.01
26 0.1861 -2117.71 0.15 -344.89 0.14
27 0.1862 -2119.05 0.40 -345.17 -0.14
28 0.1863 -2120.56 0.24 -344.98 0.04
29 0.1939 -2290.81 -0.15 -343.27 -0.06
30 0.1944 -2302.05 0.08 -343.18 -0.08
31 0.1944 -2302.05 0.25 -343.18 -0.08
32 0.1944 -2303.27 0.07 -342.89 0.19
33 0.2457 -3506.89 -0.14 -284.99 0.00
34 0.2458 -3508.19 0.25 -284.94 -0.08
35 0.2459 -3510.50 -0.38 -284.73 0.00
36 0.2459 -3512.47 -0.64 -284.61 0.00
37 0.2460 -3513.17 0.11 -284.45 0.06
38 0.2512 -3636.77 -0.03 -273.97 0.10
39 0.2512 -3637.57 0.06 -273.96 0.05
40 0.2516 -3646.45 -0.00 -273.31 -0.02
41 0.2517 -3649.26 0.14 -273.07 -0.03
42 2.2636 2461.81 0.10 3497.10 -0.04
43 2.2637 2459.53 0.09 3497.20 -0.15
44 2.3592 455.53 0.22 3843.01 -0.03
45 2.3593 454.86 -0.09 3843.08 -0.05
46 2.3593 454.58 -0.19 3842.98 -0.20
47 2.3593 454.51 -0.08 3843.17 -0.07
48 2.3593 454.20 -0.04 3843.16 -0.17
49 2.3593 454.13 0.07 3843.34 -0.03
50 2.3593 453.78 -0.10 3843.43 0.00
51 2.3593 453.78 0.08 3843.43 -0.04
52 2.3594 453.39 0.05 3843.60 0.04
53 2.3594 453.04 -0.12 3843.69 0.07
54 2.3594 452.69 -0.29 3843.77 0.11
55 2.3594 452.65 -0.14 3843.86 0.15
56 2.3594 452.58 -0.03 3844.05 0.29
57 2.4549 -530.18 0.28 4357.10 0.09
58 2.4553 -531.65 0.18 4359.33 0.01
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.
17BH230 quality flag:3 Type: SCATEXTD SCATEXTD SCATEXTD axisobj 47.229 47.258 47.202 ecceobj 0.086 0.090 0.082 incobj 31.791 31.791 31.791 qmin 42.414 42.357 42.647 qmax 52.326 52.598 52.078 amean 47.254 47.286 47.225 amin 46.881 46.903 46.855 amax 47.668 47.699 47.635 emean 0.085 0.089 0.081 emin 0.073 0.077 0.069 emax 0.098 0.103 0.094 imean 31.055 31.059 31.051 imin 30.843 30.831 30.827 imax 31.291 31.298 31.268 excite_mean 0.523 0.524 0.522 fracstop 1.000 1.000 1.000 cjmean 2.776 2.775 2.777 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 203.1 202.8 203.6 kozaiamp 180.0 180.0 179.9