Epsilon Orionis
E549405
Epsilon Orionis, traditionally known as Alnilam, is a luminous blue supergiant star forming the central "belt" star in the constellation Orion.
Statements (46)
| Predicate | Object |
|---|---|
| instanceOf |
Orion Belt star
ⓘ
star ⓘ supergiant star ⓘ |
| belongsToStellarAssociation | Orion OB1 association NERFINISHED ⓘ |
| belongsToSubgroup | Orion OB1b subgroup NERFINISHED ⓘ |
| emitsStrong | ultraviolet radiation ⓘ |
| hasAge_Myr | about 5.7 ⓘ |
| hasApparentMagnitudeV | 1.69 ⓘ |
| hasArabicNameEtymology | derived from Arabic "al-nizām" meaning "the string of pearls" ⓘ |
| hasBayerDesignation | ε Orionis NERFINISHED ⓘ |
| hasBrightStarDesignation | HR 1899 NERFINISHED ⓘ |
| hasColorIndexBMinusV | -0.19 ⓘ |
| hasConstellation | Orion NERFINISHED ⓘ |
| hasDeclination_J2000 | -01°12′07″ ⓘ |
| hasDistanceFromEarth_ly | about 2000 ⓘ |
| hasDistanceFromEarth_pc | about 600 ⓘ |
| hasEffectiveTemperature_K | about 27500 ⓘ |
| hasGalacticLatitude_deg | about -17.2 ⓘ |
| hasGalacticLongitude_deg | about 205.2 ⓘ |
| hasGalacticPopulation | Population I ⓘ |
| hasHenryDraperDesignation | HD 37128 NERFINISHED ⓘ |
| hasHipparcosNumber | HIP 26311 NERFINISHED ⓘ |
| hasLuminosity_solarLuminosities | about 375000 ⓘ |
| hasMass_solarMasses | about 30 ⓘ |
| hasParallax_mas | about 1.6 ⓘ |
| hasProperMotionDec_masPerYr | about -1.0 ⓘ |
| hasProperMotionRA_masPerYr | about 1.5 ⓘ |
| hasRadialVelocity_kmPerS | about 27 ⓘ |
| hasRadius_solarRadii | about 32 ⓘ |
| hasRankByBrightness | among top 30 brightest stars ⓘ |
| hasRightAscension_J2000 | 05h36m12.8s ⓘ |
| hasSpectralType | B0Ia ⓘ |
| hasTraditionalName | Alnilam NERFINISHED ⓘ |
| hasVariabilityType | Alpha Cygni-type variable ⓘ |
| ionizes | surrounding interstellar medium ⓘ |
| isAmongBrightestStarsInSky | true ⓘ |
| isCataloguedIn |
Bright Star Catalogue
NERFINISHED
ⓘ
Henry Draper Catalogue NERFINISHED ⓘ Hipparcos Catalogue NERFINISHED ⓘ |
| isCentralStarOf | Orion's Belt NERFINISHED ⓘ |
| isPartOf | Orion's Belt NERFINISHED ⓘ |
| isReferenceStarFor | Orion constellation pattern ⓘ |
| isUsedFor | celestial navigation ⓘ |
| isVisibleToNakedEye | true ⓘ |
| orbitsGalacticCenter | true ⓘ |
| willEndAs | core-collapse supernova ⓘ |
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.