Alnilam

E127427

Alnilam is a bright blue supergiant star that forms the central and most luminous point of Orion’s Belt in the constellation Orion.

All labels observed (2)

Label Occurrences
Alnilam canonical 13
Alnilam (small, in same field) 1

How this entity was disambiguated

Statements (48)

Predicate Object
instanceOf astronomical object ⓘ
blue supergiant star ⓘ
star ⓘ
supergiant star ⓘ
age_millionYears about 5 ⓘ
apparentMagnitude 1.69 ⓘ
bayerDesignation Epsilon Orionis ⓘ
belongsTo Milky Way ⓘ
bestSeenInMonth January ⓘ
catalogIdentifier HD 37128 ⓘ
HIP 26311 ⓘ
HR 1903 ⓘ
SAO 132444 ⓘ
color blue ⓘ
constellation Orion ⓘ
declination −01° 12′ 07″ ⓘ
distanceFromEarth_ly about 2000 ⓘ
distanceFromEarth_pc about 600 ⓘ
effectiveTemperature_K about 27500 ⓘ
evolutionaryStage post-main-sequence ⓘ
flamsteedDesignation 46 Orionis ⓘ
galacticPopulation thin disk ⓘ
hasCompanions possible faint optical companions ⓘ
hemisphereVisibility both northern and southern hemispheres ⓘ
isKeyFeatureOf Orion constellation pattern ⓘ
linked to: Orion constellation
isMostLuminousStarOf Orion’s Belt ⓘ
linked to: Orion constellation
isPartOf Orion OB1 association ⓘ
Orion OB1b subgroup ⓘ
isReferenceStarFor celestial navigation ⓘ
isVariableStar true ⓘ
isVisibleToNakedEye true ⓘ
locatedIn Orion constellation ⓘ
luminosity_solarLuminosities about 375000 ⓘ
mass_solarMasses about 30 ⓘ
memberOf Orion’s Belt ⓘ
linked to: Orion constellation
metallicity_FeH near solar ⓘ
nameEtymology derived from Arabic meaning “string of pearls” or “sapphire” ⓘ
nameOriginLanguage Arabic ⓘ
parallax_mas about 1.6 ⓘ
positionInAsterism central star of Orion’s Belt ⓘ
properMotionDec_masPerYr about −1.0 ⓘ
properMotionRA_masPerYr about 1.5 ⓘ
radialVelocity_kmPerSec about 27 ⓘ
radius_solarRadii about 30 ⓘ
rightAscension 05h 36m 12.8s ⓘ
spectralClass B0Ia ⓘ
variableStarType Alpha Cygni-type variable ⓘ
willEndAs core-collapse supernova ⓘ

How these facts were elicited

Referenced by (14)

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

Orion's Belt → hasStar → Alnilam ⓘ
subject linked to: Orion
Orion → containsStar → Alnilam ⓘ
subject linked to: Orion constellation
Orion → containsBlueSupergiant → Alnilam ⓘ
subject linked to: Orion constellation
46 Orionis → isCounterpartOf → Alnilam ⓘ
46 Orionis → isDifferentFrom → Alnilam ⓘ
46 Orionis → angularSeparationFrom → Alnilam (small, in same field) ⓘ
linked to: Alnilam
HR 1903 → alsoKnownAs → Alnilam ⓘ
HR 1903 → hasProperName → Alnilam ⓘ
HD 37128 → hasAlternativeName → Alnilam ⓘ
HIP 26311 → alsoKnownAs → Alnilam ⓘ