17447-4244 FIN 341 (HD 160928)
17h 44m 42.01s -42° 43' 45.5" P.A. 226.00 sep 0.0 mag 6.60,6.60 Sp A1V+F0IV dist. 72.1 pc (235.19 l.y.)
Coord 2000 |
17447-4244 |
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Discov num |
FIN 341 |
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Comp |
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Coord arcsec 2000 |
17 44 42.01 -42 43 45.5 |
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Date first |
1957 |
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Date last |
2021 |
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Obs |
18 |
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Pa first |
6 |
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Pa last |
225.6 |
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P.A. Now (θ) |
225.6° |
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Sep first |
0.1 |
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Sep last |
0.028 |
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Sep. Now (ρ) |
0.028" |
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Mag pri |
6.60 |
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Mag sec |
6.60 |
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delta mag (ΔM) |
0 |
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Spectral class |
A1V+F0IV (white/yellow-white) |
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Pri motion ra |
-001 |
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Sec motion ra |
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Pri motion dec |
+010 |
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Sec motion dec |
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Notes |
N
O
(See Notes, Orbital solution) |
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This double is physical.
OTHER CATALOGS AND DESIGNATIONS
Name |
HD 160928 |
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Constellation |
Scorpius |
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SAO |
228363 |
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HIP |
86847 |
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Tycho2 |
7893-02172-1 |
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Gaia DR2 |
5957213823943185152 |
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HD |
160928 |
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HR |
6597 |
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GC |
24054 |
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CD |
CD-4212431 |
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CP |
CP-42 7927 |
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Distance |
72.1 |
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Distance ly |
235.19 |
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ORBITAL ELEMENTS
Period (P) | 15.12y | ± 0.1 |
Periastron (T) | 2012.71y | ± 0.68 |
Semi-major axis (a) | 0.1183a | ± 0.0049 |
Eccentricity (e) | 0.165 | ± 0.038 |
Inclination (i) | 81.7° | ± 1.6 |
Longitude of periastron (ω) | 244.6° | ± 14.4 |
Node (Ω) | 179.5° | ± 0.8 |
Notes | n | |
Reference | Tok2017b | |
Equinox | 2000 | |
Last observation | | |
Grade | 4 | (1=Definitive, 9=Indet.) |
label |
theta |
rho |
2000 |
172.5 |
0.085 |
2001 |
177.2 |
0.114 |
2002 |
180.5 |
0.125 |
2003 |
183.6 |
0.119 |
2004 |
187.6 |
0.098 |
2005 |
194.7 |
0.067 |
2006 |
217.1 |
0.032 |
2007 |
311.0 |
0.026 |
2008 |
343.3 |
0.059 |
2009 |
352.0 |
0.090 |
2010 |
356.8 |
0.107 |
2011 |
0.9 |
0.104 |
2012 |
6.6 |
0.076 |
2013 |
26.8 |
0.030 |
2014 |
154.2 |
0.033 |
2015 |
171.7 |
0.080 |
2016 |
176.8 |
0.112 |
2017 |
180.1 |
0.125 |
2018 |
183.2 |
0.120 |
2019 |
187.0 |
0.101 |
2020 |
193.5 |
0.071 |
2021 |
212.1 |
0.036 |
2022 |
301.1 |
0.023 |
2023 |
341.6 |
0.055 |
2024 |
351.3 |
0.087 |
2025 |
356.3 |
0.106 |
2026 |
0.4 |
0.105 |
2027 |
5.7 |
0.081 |
2028 |
21.5 |
0.036 |
2029 |
147.8 |
0.027 |
2030 |
170.7 |
0.075 |
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Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st.
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Measures: green=micrometric, blue=interferometric, purple=photographic |
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