Alnitak

E126206

Alnitak is a bright multiple star system in the constellation Orion, forming the easternmost star of the prominent asterism known as Orion’s Belt.

All labels observed (7)

Label Occurrences
Alnitak canonical 24
Alnitak Ab 5
Alnitak B 4

How this entity was disambiguated

Statements (49)

Predicate Object
instanceOf astronomical object ⓘ
multiple star system ⓘ
stellar system ⓘ
absoluteMagnitudeV −5.25 ⓘ
age_Myr about 6 ⓘ
apparentMagnitudeV 1.72 ⓘ
belongsToAssociation Orion OB1 association ⓘ
belongsToSubgroup Orion OB1b subgroup ⓘ
bestSeenInMonth January ⓘ
colorIndexBminusV −0.20 ⓘ
declination −01° 56′ 34″ ⓘ
distanceFromEarth_ly about 1260 light-years ⓘ
distanceFromEarth_pc about 387 parsecs ⓘ
effectiveTemperature_K about 29000 ⓘ
eponymLanguage Arabic ⓘ
equatorialCoordinateSystem ICRS ⓘ
galacticLatitude −16.0° ⓘ
galacticLongitude 206.45° ⓘ
hasBayerDesignation Zeta Orionis ⓘ
hasBDDesignation +−01° 969 ⓘ
hasComponent Alnitak Aa ⓘ
linked to: Alnitak

Alnitak Ab ⓘ
linked to: Alnitak

Alnitak B ⓘ
linked to: Alnitak

Alnitak C ⓘ
linked to: Alnitak
hasFlamsteedDesignation 50 Orionis ⓘ
hasHDDesignation HD 37742 ⓘ
hasHIPDesignation HIP 26727 ⓘ
hasHRDesignation HR 1948 ⓘ
hasNearbyObject Flame Nebula (NGC 2024) ⓘ
linked to: Flame Nebula

Horsehead Nebula (Barnard 33) ⓘ
linked to: Horsehead Nebula
hasSAODesignation SAO 132444 ⓘ
isIonizingSourceFor nearby emission nebulae ⓘ
isPartOfAsterism Orion's Belt ⓘ
linked to: Orion constellation
locatedInConstellation Orion ⓘ
luminositySolar about 250000 ⓘ
massSolar about 33 ⓘ
nameEtymology derived from Arabic "al-niṭāq" meaning "the girdle" or "the belt" ⓘ
parallax_mas 2.58 ⓘ
parallaxError_mas 0.39 ⓘ
positionInOrionsBelt easternmost star ⓘ
properMotionDec_masPerYr +2.20 ⓘ
properMotionRA_masPerYr +3.01 ⓘ
radialVelocity_kmPerSec +16 ⓘ
radiusSolar about 20 ⓘ
rightAscension 05h 40m 45.5s ⓘ
spectralType O9.5 Iab ⓘ
variableType eclipsing variable candidate ⓘ
visibleIn Northern Hemisphere ⓘ
Southern Hemisphere ⓘ

How these facts were elicited

Referenced by (41)

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

Orion's Belt → hasStar → Alnitak ⓘ
subject linked to: Orion
Alnitak → hasComponent → Alnitak Aa ⓘ
linked to: Alnitak
Alnitak → hasComponent → Alnitak Ab ⓘ
linked to: Alnitak
Alnitak → hasComponent → Alnitak B ⓘ
linked to: Alnitak
Alnitak → hasComponent → Alnitak C ⓘ
linked to: Alnitak
Horsehead Nebula → visibleNear → Alnitak ⓘ
Orion → containsStar → Alnitak ⓘ
subject linked to: Orion constellation
Orion → containsBlueSupergiant → Alnitak ⓘ
subject linked to: Orion constellation
Orion → containsMultipleStarSystem → Alnitak ⓘ
subject linked to: Orion constellation
Barnard 33 → near → Alnitak ⓘ
NGC 2023 → near → Alnitak ⓘ
subject linked to: NGC 2023 reflection nebula
NGC 2024 → nearObject → Alnitak ⓘ
NGC 2024 → ionizingSource → Alnitak ⓘ
Flame Nebula → ionizedBy → Alnitak ⓘ
Flame Nebula → near → Alnitak ⓘ
Zeta Orionis → alsoKnownAs → Alnitak ⓘ
Zeta Orionis → hasProperName → Alnitak ⓘ
50 Orionis → isCounterpartOf → Alnitak ⓘ
50 Orionis → isNearOnSky → Alnitak ⓘ
HR 1948 → alsoKnownAs → Alnitak ⓘ
HR 1948 → hasComponent → Alnitak A ⓘ
linked to: Alnitak
HR 1948 → hasComponent → Alnitak B ⓘ
linked to: Alnitak
HR 1948 → hasComponent → Alnitak Aa ⓘ
linked to: Alnitak
HR 1948 → hasComponent → Alnitak Ab ⓘ
linked to: Alnitak
HR 1948 → orbitalCompanion → Alnitak Ab ⓘ
linked to: Alnitak
HD 37742 → alsoKnownAs → Alnitak ⓘ
HIP 26727 → alsoKnownAs → Alnitak ⓘ
HIP 26727 → hasComponent → Alnitak A ⓘ
linked to: Alnitak
HIP 26727 → hasComponent → Alnitak Aa ⓘ
linked to: Alnitak
HIP 26727 → hasComponent → Alnitak Ab ⓘ
linked to: Alnitak
HIP 26727 → hasComponent → Alnitak B ⓘ
linked to: Alnitak
SAO 132444 → refersTo → Alnitak ⓘ
SAO 132444 → hasComponent → Alnitak A ⓘ
linked to: Alnitak
SAO 132444 → hasComponent → Alnitak B ⓘ
linked to: Alnitak
SAO 132444 → hasComponent → Alnitak Ab ⓘ
linked to: Alnitak
SAO 132444 → hasProperName → Alnitak ⓘ
HR 1852 → hasAlternativeName → Alnitak–Alnilam–Mintaka belt member ⓘ
linked to: Alnitak
HR 1903 → neighboringBeltStar → Alnitak ⓘ