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gptkbp:instanceOf
|
gptkb:star
red supergiant
|
|
gptkbp:age
|
about 5.7 million years
|
|
gptkbp:apparentMagnitude
|
1.69
-6.38
|
|
gptkbp:catalogueNumber
|
gptkb:ADS_4117
gptkb:FK5_199
gptkb:GC_7012
gptkb:WDS_J05361-0112A
gptkb:BD−01°_969
gptkb:HD_37128
gptkb:HIP_26311
gptkb:HR_1903
gptkb:SAO_132374
|
|
gptkbp:color
|
blue-white
|
|
gptkbp:component
|
gptkb:Orion_OB1_association
|
|
gptkbp:constellation
|
gptkb:Orion
|
|
gptkbp:declination
|
-01° 12′ 07″
|
|
gptkbp:diameter
|
about 32 solar radii
|
|
gptkbp:discoveredBy
|
ancient astronomers
|
|
gptkbp:distanceFromEarth
|
about 2,000 light-years
|
|
gptkbp:evolutionaryStage
|
supergiant
|
|
gptkbp:expansion
|
will end as a supernova
|
|
gptkbp:galacticLatitude
|
-20.75
206.45
|
|
gptkbp:hasViewOf
|
naked eye
|
|
gptkbp:heliumContent
|
enriched
|
|
https://www.w3.org/2000/01/rdf-schema#label
|
Epsilon Orionis
|
|
gptkbp:luminosity
|
about 275,000 times the Sun
|
|
gptkbp:mass
|
about 40 solar masses
|
|
gptkbp:metallicity
|
-0.16
|
|
gptkbp:notableFor
|
central star in Orion's Belt
|
|
gptkbp:otherName
|
gptkb:Alnilam
gptkb:ε_Orionis
|
|
gptkbp:parallax
|
2.41 mas
|
|
gptkbp:partOf
|
gptkb:Orion's_Belt
|
|
gptkbp:properMotionRA
|
0.06 mas/yr
1.09 mas/yr
|
|
gptkbp:radialVelocity
|
23.6 km/s
|
|
gptkbp:rightAscension
|
05h 36m 12.8s
|
|
gptkbp:rotationPeriod
|
28 km/s
|
|
gptkbp:spectralType
|
B0Ia
|
|
gptkbp:temperature
|
about 27,500 K
|
|
gptkbp:variableStar
|
gptkb:Alpha_Cygni_variable
|
|
gptkbp:bfsParent
|
gptkb:Alnilam
|
|
gptkbp:bfsLayer
|
6
|