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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
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gptkbp:constellation
|
gptkb:Orion
|
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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)
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|
gptkbp:hasCompanion
|
no confirmed companion
|
|
gptkbp:hasViewOf
|
gptkb:Northern_Hemisphere
gptkb:Southern_Hemisphere
|
|
https://www.w3.org/2000/01/rdf-schema#label
|
Betelgeuse
|
|
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
|
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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
|
red supergiant
|
|
gptkbp:variabilityPeriod
|
~2,100 days (secondary)
~400 days (primary)
|
|
gptkbp:variableStar
|
semiregular variable
|
|
gptkbp:bfsParent
|
gptkb:Betelgeusian
gptkb:Orion
gptkb:Stars
gptkb:Beetlejuice
gptkb:Michelson_stellar_interferometer
gptkb:Procyon
|
|
gptkbp:bfsLayer
|
5
|