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gptkbp:instanceOf
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gptkb:star
|
|
gptkbp:age
|
4.85 billion years
|
|
gptkbp:alsoKnownAs
|
gptkb:Rigil_Kentaurus
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gptkbp:angularSeparation
|
up to 22 arcseconds (A and B)
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gptkbp:apparentMagnitude
|
-0.27
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gptkbp:brightestStar
|
constellation Centaurus
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gptkbp:catalogueNumber
|
gptkb:Gliese_559
gptkb:HD_128620C_(Proxima_Centauri)
gptkb:HD_128620_(A)
gptkb:HD_128621_(B)
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gptkbp:component
|
gptkb:Proxima_Centauri
gptkb:Alpha_Centauri_A
gptkb:Alpha_Centauri_B
|
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gptkbp:declination
|
-60° 50′ 02.3737″
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gptkbp:discoveredBy
|
unknown (known since antiquity)
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gptkbp:distanceFromEarth
|
4.37 light years
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gptkbp:hasExoplanet
|
gptkb:Proxima_Centauri_b
|
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gptkbp:hasViewOf
|
gptkb:Southern_Hemisphere
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|
https://www.w3.org/2000/01/rdf-schema#label
|
Alpha Centauri
|
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gptkbp:locatedIn
|
constellation Centaurus
|
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gptkbp:mass
|
2.18 solar masses (combined)
|
|
gptkbp:metallicity
|
0.22 [Fe/H] (Alpha Centauri A)
|
|
gptkbp:nearestStarSystemToSun
|
true
|
|
gptkbp:orbitType
|
79.91 years (A and B)
|
|
gptkbp:parallax
|
747.17 mas
|
|
gptkbp:partOf
|
gptkb:Milky_Way_galaxy
|
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gptkbp:properMotionRA
|
3679 mas/yr
|
|
gptkbp:radialVelocity
|
-22.4 km/s
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gptkbp:rightAscension
|
14h 39m 36.49400s
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gptkbp:spectralType
|
G2V + K1V + M5.5Ve
|
|
gptkbp:bfsParent
|
gptkb:binary_stars
gptkb:Breakthrough_Starshot
gptkb:Stars
gptkb:Centauri
gptkb:Centaurus
|
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gptkbp:bfsLayer
|
5
|