τ Scorpii

URI: https://gptkb.org/entity/τ_Scorpii
GPTKB entity
Statements (35)
Predicate Object
gptkbp:instanceOf gptkb:star
stellar classification
gptkbp:age ~3 million years
gptkbp:apparentMagnitude 2.82
gptkbp:catalogueNumber gptkb:BD-28_4216
gptkb:HD_149438
gptkb:HIP_81377
gptkb:SAO_184124
CD-28 12242
HR 6165
gptkbp:constellation gptkb:Scorpius
gptkbp:declination -28° 12′ 57″
gptkbp:diameter ~6.5 solar radii
gptkbp:discoveredBy gptkb:John_Flamsteed_(designation)
gptkbp:distanceFromEarth 429 light years
gptkbp:hasXRayEmission yes
https://www.w3.org/2000/01/rdf-schema#label τ Scorpii
gptkbp:isSingleStar yes
gptkbp:luminosity ~20,000 times Sun
gptkbp:magneticFieldStrength yes
~500 G
gptkbp:mass ~15 solar masses
gptkbp:metallicity ~solar
gptkbp:name gptkb:Tau_Scorpii
gptkbp:parallax 7.60 mas
gptkbp:partOf gptkb:Upper_Scorpius_subgroup
gptkb:Scorpius–Centaurus_association
gptkbp:radialVelocity -1.0 km/s
gptkbp:rightAscension 16h 35m 52.9s
gptkbp:rotationPeriod ~8 km/s
gptkbp:spectralType B0.2V
gptkbp:temperature ~31,400 K
gptkbp:variableStar yes
gptkbp:bfsParent gptkb:Tau_Scorpii
gptkbp:bfsLayer 7