Star type
g A: G8 IV
g B: M3 V
Distance from Earth
g 44.7 ly
Star Service No.
g NA
Age
g A: Its subgiant status and that it is overly bright for its temperature show that it has stopped fusing hydrogen in its core, and with a dead helium core is preparing to become a much more luminous giant star; Sol will reach such a stage in about seven billion years, while Beta Aquilae A has a hydrogen-fusing lifetime only about 80% solar.
g B: NA
Radius/Mass/Temp (xSol)
g A: 300%; 130%; 5300 K
g B: NA; 33%; 3400 K
Brightness (xSol)
g A: 533%
g B: 2.5% (which is 10 times brighter than Proxima Centauri)
Metallicity
g A: NA
g B: NA
Comparison to Sol
g A: Magnetic field slightly stronger than that of the Sun, and displays some solar-like activity
g B: NA
Picture of star
g A: NA
g B: NA
Star system features
g Star B orbits Star a at 175 AU
Known planets
g A: Its motions have been examined for the effects of planets, but none have been found. Neither has any surrounding dust disk that might indicate a planetary system.
g B: NA
Habitable zones
g A: NA
g B: NA
Orbital map
g A: NA
g B: NA
View from stars
g A: Star B would shine only about as brightly as our quarter Moon as seen from Alshain A (or from some undetected close-in planet).
Nearby stars
(Star systems with 10 light years)
g NA
Map locating star system
g NA
Location in Earth sky
g In constellation Aquila
Other names
g A: Alshain
g B: NA
Sci-fi mentions
g A: In "Star Trek" universe, located in Federation space
g B: NA
Get your SF book manuscript edited
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Monday, April 27, 2009
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