|
gptkbp:instanceOf
|
gptkb:star
|
|
gptkbp:age
|
~12 million years
|
|
gptkbp:apparentMagnitude
|
0.96
|
|
gptkbp:BayerDesignation
|
gptkb:Alpha_Scorpii
|
|
gptkbp:brightestStar
|
gptkb:Scorpius
|
|
gptkbp:catalogue
|
gptkb:Henry_Draper_Catalogue
|
|
gptkbp:catalogueNumber
|
gptkb:HD_148478
|
|
gptkbp:constellation
|
gptkb:Scorpius
|
|
gptkbp:declination
|
-26° 25′ 55″
|
|
gptkbp:diameter
|
~680 solar radii
|
|
gptkbp:discoveredBy
|
gptkb:John_Flamsteed_(catalogued_as_21_Scorpii)
|
|
gptkbp:distanceFromEarth
|
~550 light years
|
|
gptkbp:evolutionaryStage
|
red supergiant
|
|
gptkbp:hasCompanion
|
yes
B-type main-sequence star
|
|
gptkbp:hasTraditionalName
|
gptkb:Antares
|
|
https://www.w3.org/2000/01/rdf-schema#label
|
HD 148478
|
|
gptkbp:isOneOf
|
brightest stars in the night sky
|
|
gptkbp:luminosity
|
~75,900 times solar luminosity
|
|
gptkbp:mass
|
~12 solar masses
|
|
gptkbp:metallicity
|
[Fe/H] = -0.15
|
|
gptkbp:otherName
|
gptkb:Antares
|
|
gptkbp:parallax
|
5.89 mas
|
|
gptkbp:properMotionRA
|
-10.16 mas/yr
-23.21 mas/yr
|
|
gptkbp:radialVelocity
|
-3.4 km/s
|
|
gptkbp:rightAscension
|
16h 29m 24.4s
|
|
gptkbp:spectralType
|
M1.5Iab-Ib
|
|
gptkbp:temperature
|
~3,500 K
|
|
gptkbp:variableType
|
LC (slow irregular variable)
|
|
gptkbp:bfsParent
|
gptkb:Antares
|
|
gptkbp:bfsLayer
|
5
|