17173-3010 BU 1119 (HD 156184)
17h 17m 20.56s -30° 09' 52.0" P.A. 233.00 sep 0.3 mag 7.52,8.34 Sp G5IV dist. 169.49 pc (552.88 l.y.)
Coord 2000 |
17173-3010 |
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Discov num |
BU 1119 |
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Comp |
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Coord arcsec 2000 |
17 17 20.56 -30 09 52.0 |
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Date first |
1889 |
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Date last |
2008 |
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Obs |
24 |
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Pa first |
356 |
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Pa last |
232.6 |
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P.A. Now (θ) |
232.6° |
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Sep first |
0.8 |
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Sep last |
0.35 |
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Sep. Now (ρ) |
0.35" |
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Mag pri |
7.52 |
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Mag sec |
8.34 |
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delta mag (ΔM) |
0.82 |
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Spectral class |
G5IV (yellow) |
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Pri motion ra |
-023 |
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Sec motion ra |
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Pri motion dec |
-004 |
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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 156184 |
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Constellation |
Scorpius |
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SAO |
208636 |
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HIP |
84576 |
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Tycho2 |
7362-00111-1 |
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Gaia DR2 |
4059182769898819968 |
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HD |
156184 |
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GC |
23322 |
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CD |
CD-3013996 |
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CP |
CP-30 4641 |
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Distance |
169.49 |
|
Distance ly |
552.88 |
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ORBITAL ELEMENTS
Period (P) | 1032y | |
Periastron (T) | 2012y | |
Semi-major axis (a) | 0.906a | |
Eccentricity (e) | 0.612 | |
Inclination (i) | 131.5° | |
Longitude of periastron (ω) | 175.2° | |
Node (Ω) | 45.3° | |
Notes | n | |
Reference | Zir2012b | |
Equinox | 2000 | |
Last observation | 2008 | |
Grade | 5 | (1=Definitive, 9=Indet.) |
label |
theta |
rho |
2000 |
243.5 |
0.341 |
2001 |
242.2 |
0.342 |
2002 |
240.9 |
0.343 |
2003 |
239.7 |
0.344 |
2004 |
238.4 |
0.345 |
2005 |
237.1 |
0.346 |
2006 |
235.9 |
0.347 |
2007 |
234.6 |
0.347 |
2008 |
233.4 |
0.348 |
2009 |
232.2 |
0.349 |
2010 |
230.9 |
0.350 |
2011 |
229.7 |
0.350 |
2012 |
228.5 |
0.351 |
2013 |
227.3 |
0.351 |
2014 |
226.1 |
0.352 |
2015 |
224.8 |
0.352 |
2016 |
223.6 |
0.352 |
2017 |
222.4 |
0.353 |
2018 |
221.2 |
0.353 |
2019 |
220.0 |
0.353 |
2020 |
218.8 |
0.353 |
2021 |
217.6 |
0.353 |
2022 |
216.4 |
0.353 |
2023 |
215.2 |
0.353 |
2024 |
214.0 |
0.353 |
2025 |
212.8 |
0.352 |
2026 |
211.6 |
0.352 |
2027 |
210.4 |
0.352 |
2028 |
209.1 |
0.351 |
2029 |
207.9 |
0.351 |
2030 |
206.7 |
0.351 |
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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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