|
gptkbp:instanceOf
|
gptkb:star
blue supergiant
|
|
gptkbp:age
|
about 5.7 million years
|
|
gptkbp:apparentMagnitude
|
1.69
|
|
gptkbp:catalogueNumber
|
gptkb:BD-01_969
gptkb:FK5_187
gptkb:GC_6972
gptkb:GSC_04771-01450
gptkb:HD_37128
gptkb:HIP_26311
gptkb:HR_1903
gptkb:PLX_1242
gptkb:SAO_132374
gptkb:WDS_J05361-0112
CD-01 1004
PPM 149513
|
|
gptkbp:color
|
blue-white
|
|
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 supernova
|
|
gptkbp:hasCompanion
|
no known companion
|
|
gptkbp:hasViewOf
|
both hemispheres
|
|
https://www.w3.org/2000/01/rdf-schema#label
|
Alnilam
|
|
gptkbp:locatedIn
|
gptkb:Orion's_Belt
gptkb:Orion_constellation
|
|
gptkbp:luminosity
|
about 832,000 times Sun
|
|
gptkbp:mass
|
about 40 solar masses
|
|
gptkbp:metallicity
|
slightly sub-solar
|
|
gptkbp:notableFor
|
central star in Orion's Belt
one of the 58 navigational stars
one of the brightest stars in Orion
|
|
gptkbp:otherName
|
gptkb:ε_Orionis
gptkb:Epsilon_Orionis
|
|
gptkbp:parallax
|
1.56 mas
|
|
gptkbp:partOf
|
gptkb:Orion's_Belt
|
|
gptkbp:properMotionRA
|
+1.06 mas/yr
-1.20 mas/yr
|
|
gptkbp:radialVelocity
|
+23.6 km/s
|
|
gptkbp:rightAscension
|
05h 36m 12.8s
|
|
gptkbp:spectralType
|
B0Ia
|
|
gptkbp:temperature
|
about 27,500 K
|
|
gptkbp:variableStar
|
gptkb:Alpha_Cygni_variable
|
|
gptkbp:visibleToNakedEye
|
yes
|
|
gptkbp:bfsParent
|
gptkb:Orion
|
|
gptkbp:bfsLayer
|
5
|