HIP 26311

E545063

HIP 26311 is the Hipparcos catalog designation for Alnilam, the bright blue supergiant star forming the central point of Orion’s Belt.

All labels observed (1)

Label Occurrences
HIP 26311 canonical 2

How this entity was disambiguated

Statements (47)

Predicate Object
instanceOf Hipparcos catalog star ⓘ
star ⓘ
absoluteMagnitudeV about −6.4 ⓘ
age_Myr about 5.7 ⓘ
alsoKnownAs Alnilam ⓘ
Epsilon Orionis ⓘ
apparentMagnitudeV 1.69 ⓘ
belongsToAssociation Orion OB1 association ⓘ
belongsToSubgroup Orion OB1b subgroup ⓘ
catalogIdentifier HIP 26311 ⓘ
color blue ⓘ
constellation Orion ⓘ
declination_J2000 −01° 12′ 07″ ⓘ
distanceFromEarth_ly about 2000 ⓘ
distanceFromEarth_pc about 600 ⓘ
effectiveTemperature_K about 27500 ⓘ
evolutionaryStage blue supergiant ⓘ
futureEvolution likely core-collapse supernova ⓘ
galacticPopulation thin disk ⓘ
hasBayerDesignation ε Orionis ⓘ
hasBDDesignation +−01° 969 ⓘ
hasFlamsteedDesignation 46 Orionis ⓘ
hasHDDesignation HD 37128 ⓘ
hasHRDesignation HR 1852 ⓘ
hasProperMotion yes ⓘ
hasSAODesignation SAO 132444 ⓘ
hasVariability yes ⓘ
hemisphereVisibility both hemispheres ⓘ
isBrightStar yes ⓘ
isNakedEyeVisible yes ⓘ
isPartOf Orion's Belt ⓘ
linked to: Orion Belt region
isPrimaryComponentOf Orion's Belt asterism ⓘ
linked to: Orion Belt region
luminosity_solar about 375000 ⓘ
luminosityClass Ia ⓘ
mass_solar about 30 ⓘ
metallicity_FeH approximately solar ⓘ
parallax_mas about 1.8 ⓘ
positionInAsterism central star of Orion's Belt ⓘ
properMotionDec_masPerYr about 0.6 ⓘ
properMotionRA_masPerYr about 1.1 ⓘ
radialVelocity_kmPerSec about 27 ⓘ
radius_solar about 32 ⓘ
rankByBrightnessInOrion among the brightest stars in Orion ⓘ
rightAscension_J2000 05h 36m 12.8s ⓘ
spectralClass B0 ⓘ
spectralType B0Ia ⓘ
variableType Alpha Cygni variable ⓘ

How these facts were elicited

Referenced by (2)

Full triples — surface form annotated when it differs from this entity's canonical label.

Alnilam → catalogIdentifier → HIP 26311 ⓘ