HIP 89931

E459127

HIP 89931 is the Hipparcos catalog designation for Kaus Australis, the brightest star in the constellation Sagittarius.

All labels observed (1)

Label Occurrences
HIP 89931 canonical 2

How this entity was disambiguated

Statements (47)

Predicate Object
instanceOf Hipparcos catalog star
astronomical object
star
absoluteMagnitudeV −1.4
alsoKnownAs Epsilon Sagittarii
Kaus Australis
angularSeparationFromCompanion about 2.4 arcseconds
apparentMagnitudeV 1.79
bayerDesignation Epsilon Sagittarii
belongsToConstellationAsterism Teapot of Sagittarius
linked to: Teapot asterism
catalogDesignation HIP 89931
colorIndexBMinusV −0.02
companionApparentMagnitude about 7.4
constellation Sagittarius
declination −34° 23′ 04″
distanceFromEarth about 145 light-years
about 44.5 parsecs
effectiveTemperature about 9600 K
equatorialCoordinateEpoch J2000.0
evolutionaryStage giant star
flamsteedDesignation 20 Sagittarii
galacticLatitude −10.7°
galacticLongitude 6.0°
galacticPopulation thin disk
hasCompanion Epsilon Sagittarii B
linked to: Epsilon Sagittarii
HDDesignation HD 165135
hemisphereVisibility southern sky
HRDesignation HR 6746
isBrightestStarIn Sagittarius
listedInCatalog Henry Draper Catalogue
Hipparcos
linked to: Hipparcos satellite
luminosity about 350 times solar luminosity
mass about 3.5 solar masses
metallicityFeH approximately solar
multiplicity binary star system
nameEtymology from Arabic meaning "southern bow"
parallax 22.4 mas
properMotionDec −184 mas/yr
properMotionRA +44 mas/yr
radialVelocity −19 km/s
radius about 6 solar radii
rightAscension 18h 24m 10.3s
rotationalVelocity 236 km/s
SIMBADIdentifier HIP 89931
spectralType B9.5 III
traditionalName Kaus Australis
visibleToNakedEye true

How these facts were elicited

Referenced by (2)

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