50 Orionis

E540363

50 Orionis is a star in the constellation Orion, known as the Flamsteed-designated counterpart of the bright multiple star system Alnitak in Orion’s Belt.

All labels observed (1)

Label Occurrences
50 Orionis canonical 5

How this entity was disambiguated

Statements (44)

Predicate Object
instanceOf star
belongsTo Orion OB association (region)
constellation Orion
distanceFromEarth about 1000 light-years
about 300 parsecs
equatorialCoordinateSystem ICRS
galacticPopulation thin disk
hasAlternativeName 50 Ori
hasApparentMagnitudeV about 5.27
hasCatalogIdentifier BD−01 1015
HD 37744
HIP 26736
HR 1948
hasColorIndexBMinusV about −0.20
hasColorIndexUMinusB about −0.90
hasDeclination in declination range of Orion constellation
hasEclipticLatitude near Orion’s Belt region
hasEffectiveTemperature about 25,000 K
hasFlamsteedDesignation 50 Orionis
hasGalacticLatitude near Galactic plane
hasGalacticLongitude in Orion arm region
hasLuminosity thousands of times solar luminosity
hasMass several times solar mass
hasMultiplicity no widely recognized close bright companions
hasParallax about 3.0 milliarcseconds
hasProperMotionDec small negative
hasProperMotionRA small positive
hasRadialVelocity about +28 km/s
hasRightAscension in hours range of Orion constellation
hasRotationalVelocity high
hasSpectralType B0.5V
hasStellarClassification B-type main-sequence star
hasSurfaceGravityLogG about 4.0
hasVariableType not known as a prominent variable star
isAssociatedWith Orion’s Belt
linked to: Orion Belt region
isCataloguedIn Bright Star Catalogue
Henry Draper Catalogue
Hipparcos Catalogue
Tycho Catalogue
isCounterpartOf Alnitak
isNearOnSky Alnitak
isPartOf Milky Way
isVisibleToNakedEye true
locatedIn Orion constellation

How these facts were elicited

Referenced by (5)

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