HD 37128
E545062
HD 37128, better known as Alnilam, is a luminous blue supergiant star forming the central star of Orion’s Belt in the constellation Orion.
Statements (45)
| Predicate | Object |
|---|---|
| instanceOf |
spectroscopic binary candidate
ⓘ
star ⓘ supergiant star ⓘ |
| belongsToAssociation | Orion OB1 association NERFINISHED ⓘ |
| belongsToSubgroup | Orion OB1b subgroup NERFINISHED ⓘ |
| hasAbsoluteMagnitudeV | −6.4 ⓘ |
| hasAge | about 5.7 million years ⓘ |
| hasAlternativeName |
Alnilam
NERFINISHED
ⓘ
BD−01°969 NERFINISHED ⓘ Epsilon Orionis NERFINISHED ⓘ FK5 187 NERFINISHED ⓘ HIP 26451 NERFINISHED ⓘ HR 1899 NERFINISHED ⓘ SAO 132444 NERFINISHED ⓘ ε Ori NERFINISHED ⓘ ε Orionis NERFINISHED ⓘ |
| hasApparentMagnitudeV |
1.69
ⓘ
1.70 ⓘ |
| hasArabicNameMeaning | string of pearls ⓘ |
| hasCatalogDesignation | HD 37128 NERFINISHED ⓘ |
| hasColorIndexBMinusV | −0.19 ⓘ |
| hasConstellation | Orion NERFINISHED ⓘ |
| hasDeclination | −01° 12′ 07″ ⓘ |
| hasDistance |
about 2,000 light-years
ⓘ
about 600 pc ⓘ |
| hasEffectiveTemperature | about 27,500 K ⓘ |
| hasLuminosity | about 375,000 times solar luminosity ⓘ |
| hasMass | about 40 solar masses ⓘ |
| hasMetallicity | approximately solar ⓘ |
| hasParallax | 1.78 mas ⓘ |
| hasProperMotionDec | −1.99 mas/yr ⓘ |
| hasProperMotionRA | 1.55 mas/yr ⓘ |
| hasRadialVelocity | 27 km/s ⓘ |
| hasRadius | about 32 solar radii ⓘ |
| hasRightAscension | 05h 36m 12.8s ⓘ |
| hasRotationalVelocity | 40 km/s ⓘ |
| hasSpectralType | B0Ia ⓘ |
| hasVariabilityAmplitude | about 0.05 magnitudes ⓘ |
| hasVariableType | Alpha Cygni-type variable ⓘ |
| isCentralStarOf | Orion's Belt NERFINISHED ⓘ |
| isLocatedIn |
Milky Way
NERFINISHED
ⓘ
Orion Molecular Cloud Complex NERFINISHED ⓘ |
| isOneOfBrightestStarsIn | constellation Orion NERFINISHED ⓘ |
| isPartOfAsterism | Orion's Belt NERFINISHED ⓘ |
| isVisibleToNakedEye | true ⓘ |
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.