18594-1250 KUI 89 (HD 176162)
18h 59m 23.80s -12° 50' 25.7" P.A. 173.00 sep 0.3 mag 5.98,6.64 Sp B5IV dist. 146.2 pc (476.9 l.y.)
Coord 2000 |
18594-1250 |
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Discov num |
KUI 89 |
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Comp |
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Coord arcsec 2000 |
18 59 23.80 -12 50 25.7 |
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Date first |
1934 |
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Date last |
2021 |
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Obs |
69 |
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Pa first |
164 |
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Pa last |
172.5 |
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P.A. Now (θ) |
175.2° |
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Sep first |
0.2 |
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Sep last |
0.296 |
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Sep. Now (ρ) |
0.3" |
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Mag pri |
5.98 |
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Mag sec |
6.64 |
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delta mag (ΔM) |
0.66 |
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Spectral class |
B5IV (blue-white) |
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Pri motion ra |
+008 |
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Sec motion ra |
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Pri motion dec |
-018 |
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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 176162 |
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Constellation |
Sagittarius |
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SAO |
162052 |
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HIP |
93225 |
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Tycho2 |
5714-00516-1 |
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Gaia DR2 |
4102491295900281088 |
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HD |
176162 |
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HR |
7166 |
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GC |
26068 |
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BD |
BD-13 5172 |
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Distance |
146.2 |
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Distance ly |
476.9 |
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ORBITAL ELEMENTS
Period (P) | 82.76y | |
Periastron (T) | 1993.25y | |
Semi-major axis (a) | 0.224a | |
Eccentricity (e) | 0.506 | |
Inclination (i) | 29.5° | |
Longitude of periastron (ω) | 338.3° | |
Node (Ω) | 33° | |
Notes | n | |
Reference | Hrt2014b | |
Equinox | 2000 | |
Last observation | 2009 | |
Grade | 2 | (1=Definitive, 9=Indet.) |
label |
theta |
rho |
2000 |
88.9 |
0.140 |
2001 |
96.9 |
0.147 |
2002 |
104.2 |
0.154 |
2003 |
110.8 |
0.161 |
2004 |
116.8 |
0.169 |
2005 |
122.2 |
0.177 |
2006 |
127.2 |
0.185 |
2007 |
131.8 |
0.193 |
2008 |
136.0 |
0.202 |
2009 |
139.9 |
0.210 |
2010 |
143.5 |
0.218 |
2011 |
146.8 |
0.225 |
2012 |
149.9 |
0.233 |
2013 |
152.8 |
0.240 |
2014 |
155.6 |
0.247 |
2015 |
158.2 |
0.254 |
2016 |
160.7 |
0.261 |
2017 |
163.0 |
0.268 |
2018 |
165.3 |
0.274 |
2019 |
167.4 |
0.280 |
2020 |
169.4 |
0.285 |
2021 |
171.4 |
0.290 |
2022 |
173.3 |
0.295 |
2023 |
175.2 |
0.300 |
2024 |
177.0 |
0.305 |
2025 |
178.7 |
0.309 |
2026 |
180.4 |
0.312 |
2027 |
182.1 |
0.316 |
2028 |
183.7 |
0.319 |
2029 |
185.3 |
0.322 |
2030 |
186.9 |
0.324 |
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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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