SAO 132444

E540367

SAO 132444 is the Smithsonian Astrophysical Observatory catalog designation for Alnitak, the bright multiple star that forms the easternmost part of Orion’s Belt.

All labels observed (1)

Label Occurrences
SAO 132444 canonical 7

How this entity was disambiguated

Statements (43)

Predicate Object
instanceOf star designation ⓘ
stellar catalog entry ⓘ
apparentMagnitudeV about 1.7 ⓘ
belongsToMilkyWay true ⓘ
bestSeenInMonth January ⓘ
catalog Smithsonian Astrophysical Observatory Star Catalog ⓘ
correspondsToBayerDesignation Zeta Orionis ⓘ
correspondsToBD +−01° 969 ⓘ
correspondsToFlamsteedDesignation 50 Orionis ⓘ
correspondsToHD HD 37742 ⓘ
correspondsToHIP HIP 26727 ⓘ
correspondsToHR HR 1948 ⓘ
declinationSystem ICRS ⓘ
distanceFromEarth about 240 parsecs ⓘ
about 800 light-years ⓘ
equatorialCoordinatesEpochJ2000 Dec −01° 56′ 34″ ⓘ
RA 05h 40m 45s ⓘ
galacticPopulation thin disk ⓘ
hasColorIndexBminusV about −0.2 ⓘ
hasComponent Alnitak A ⓘ
linked to: Alnitak

Alnitak Ab ⓘ
linked to: Alnitak

Alnitak B ⓘ
linked to: Alnitak
hasParallax about 4 milliarcseconds ⓘ
hasProperName Alnitak ⓘ
hasRadialVelocity about +16 km/s ⓘ
hasSpectralClass O-type ⓘ
hasTraditionalNameOrigin Arabic ⓘ
hemisphereVisibility both hemispheres ⓘ
isBlueSupergiant true ⓘ
isBrightStar true ⓘ
isHotStar true ⓘ
isMassiveStar true ⓘ
isMultipleStarSystem true ⓘ
isPartOfAsterism Orion's Belt ⓘ
linked to: Orion Belt region
isUsedAsReference for locating Orion Nebula region ⓘ
locatedInConstellation Orion ⓘ
nearbyDeepSkyObject Flame Nebula (NGC 2024) ⓘ
linked to: Flame Nebula

Horsehead Nebula (Barnard 33) ⓘ
linked to: Horsehead Nebula
positionInOrionsBelt easternmost star ⓘ
refersTo Alnitak ⓘ
rightAscensionSystem ICRS ⓘ
spectralTypePrimary O9.5 Iab ⓘ
visibleToNakedEye true ⓘ

How these facts were elicited

Referenced by (7)

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

Alnitak → hasSAODesignation → SAO 132444 ⓘ
Alnilam → catalogIdentifier → SAO 132444 ⓘ
HR 1948 → catalogDesignation → SAO 132444 ⓘ
HD 37742 → catalogIdentifier → SAO 132444 ⓘ
HR 1903 → catalogDesignation → SAO 132444 ⓘ
HD 37128 → hasAlternativeName → SAO 132444 ⓘ
HIP 26311 → hasSAODesignation → SAO 132444 ⓘ