Betelgeuse

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

GPTKB entity

AI-created image

Statements (57)

Predicate	Object
gptkbp:instanceOf	gptkb:star
gptkbp:age	~8–10 million years
gptkbp:angularSize	~0.05 arcseconds
gptkbp:apparentMagnitude	0.0 to +1.6
gptkbp:catalogue	gptkb:Henry_Draper_Catalogue gptkb:Hipparcos_Catalogue gptkb:2MASS gptkb:Bright_Star_Catalogue gptkb:SAO_Catalogue
gptkbp:constellation	gptkb:Orion
gptkbp:declination	+07° 24′ 25.4″
gptkbp:diameter	~764 solar radii
gptkbp:discoveredBy	ancient astronomers
gptkbp:distanceFromEarth	~642.5 light years
gptkbp:evolutionaryStage	late stage of stellar evolution
gptkbp:firstPhotographed	1920 (by Mount Wilson Observatory)
gptkbp:hasCompanion	no confirmed companion
gptkbp:hasViewOf	gptkb:Northern_Hemisphere gptkb:Southern_Hemisphere
gptkbp:luminosity	~126,000 times Sun
gptkbp:mass	~11.6 solar masses
gptkbp:massLossRate	~2 × 10⁻⁶ solar masses/year
gptkbp:maximumSpeed	~14 km/s
gptkbp:metallicity	−0.15 [Fe/H]
gptkbp:namedAfter	Arabic phrase 'yad al-jauzā' (hand of Orion)
gptkbp:notableEvent	gptkb:2019–2020_dimming_event
gptkbp:notableFor	expected to explode as a supernova one of the brightest stars in the night sky
gptkbp:observedBy	gptkb:Very_Large_Telescope gptkb:Hubble_Space_Telescope gptkb:ALMA
gptkbp:otherDesignation	gptkb:2MASS_J05551028+0724255 gptkb:Alpha_Orionis gptkb:BD+07_1068 gptkb:HD_39801 gptkb:HIP_27989 gptkb:HR_2061 gptkb:SAO_113271
gptkbp:parallax	5.95 ± 1.42 mas
gptkbp:partOf	gptkb:Orion_constellation
gptkbp:previousEvent	will become a supernova
gptkbp:properMotionRA	24.95 mas/yr 9.56 mas/yr
gptkbp:rightAscension	05h 55m 10.3053s
gptkbp:spectralType	M1-2 Ia-Iab
gptkbp:surface	giant convection cells
gptkbp:temperature	~3,500 K
gptkbp:type	gptkb:red_supergiant
gptkbp:variabilityPeriod	~2,100 days (secondary) ~400 days (primary)
gptkbp:variableStar	semiregular variable
gptkbp:bfsParent	gptkb:Orion gptkb:Stars gptkb:Beetlejuice gptkb:Michelson_stellar_interferometer
gptkbp:bfsLayer	5
https://www.w3.org/2000/01/rdf-schema#label	Betelgeuse