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.
Statements (43)
| Predicate | Object |
|---|---|
| instanceOf |
star designation
ⓘ
stellar catalog entry ⓘ |
| apparentMagnitudeV | about 1.7 ⓘ |
| belongsToMilkyWay | true ⓘ |
| bestSeenInMonth | January ⓘ |
| catalog | Smithsonian Astrophysical Observatory Star Catalog NERFINISHED ⓘ |
| correspondsToBayerDesignation | Zeta Orionis NERFINISHED ⓘ |
| correspondsToBD | +−01° 969 ⓘ |
| correspondsToFlamsteedDesignation | 50 Orionis NERFINISHED ⓘ |
| correspondsToHD | HD 37742 NERFINISHED ⓘ |
| correspondsToHIP | HIP 26727 NERFINISHED ⓘ |
| correspondsToHR | HR 1948 ⓘ |
| declinationSystem | ICRS NERFINISHED ⓘ |
| 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
NERFINISHED
ⓘ
Alnitak Ab NERFINISHED ⓘ Alnitak B NERFINISHED ⓘ |
| hasParallax | about 4 milliarcseconds ⓘ |
| hasProperName | Alnitak NERFINISHED ⓘ |
| 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 NERFINISHED ⓘ |
| isUsedAsReference | for locating Orion Nebula region ⓘ |
| locatedInConstellation | Orion NERFINISHED ⓘ |
| nearbyDeepSkyObject |
Flame Nebula (NGC 2024)
NERFINISHED
ⓘ
Horsehead Nebula (Barnard 33) NERFINISHED ⓘ |
| positionInOrionsBelt | easternmost star ⓘ |
| refersTo | Alnitak NERFINISHED ⓘ |
| rightAscensionSystem | ICRS NERFINISHED ⓘ |
| spectralTypePrimary | O9.5 Iab ⓘ |
| visibleToNakedEye | true ⓘ |
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.