Alcyone

URI: https://gptkb.org/entity/Alcyone

GPTKB entity

Predicate	Object
gptkbp:instanceOf	gptkb:star
gptkbp:age	about 100 million years
gptkbp:apparentMagnitude	2.87
gptkbp:brightestStar	gptkb:astronomy
gptkbp:catalogueNumber	gptkb:ADS_2336 gptkb:BD+23_508 gptkb:GC_4542 gptkb:HD_23630 gptkb:HIP_17702 gptkb:HR_1165 gptkb:SAO_76199 gptkb:WDS_J03474+2406
gptkbp:constellation	gptkb:Taurus
gptkbp:containsPlanet	yes
gptkbp:declination	+24° 06′ 19″
gptkbp:diameter	about 10 solar radii
gptkbp:discoveredBy	ancient astronomers
gptkbp:distanceFromEarth	about 440 light-years
gptkbp:hasCompanion	gptkb:Alcyone_B gptkb:Alcyone_C gptkb:Alcyone_D
gptkbp:hasEmissionLines	yes
gptkbp:hasGreekLetterDesignation	gptkb:η_Tauri
https://www.w3.org/2000/01/rdf-schema#label	Alcyone
gptkbp:isBeStar	yes
gptkbp:luminosity	about 2,400 times Sun
gptkbp:mass	about 6 solar masses
gptkbp:metallicity	about -0.08 [Fe/H]
gptkbp:namedAfter	gptkb:Alcyone_(mythology)
gptkbp:otherName	gptkb:Eta_Tauri
gptkbp:parallax	7.45 mas
gptkbp:partOf	gptkb:astronomy
gptkbp:properMotionRA	+19.99 mas/yr -45.53 mas/yr
gptkbp:rightAscension	03h 47m 29.1s
gptkbp:rotationPeriod	about 215 km/s
gptkbp:spectralType	B7IIIe
gptkbp:temperature	about 12,300 K
gptkbp:variableStar	suspected
gptkbp:visibleToNakedEye	yes
gptkbp:bfsParent	gptkb:astronomy
gptkbp:bfsLayer	4