Rho Cassiopeiae

URI: https://gptkb.org/entity/Rho_Cassiopeiae

GPTKB entity

Predicate	Object
gptkbp:instanceOf	gptkb:star gptkb:red_supergiant
gptkbp:apparentMagnitude	4.1 -9.5
gptkbp:catalogue	gptkb:Henry_Draper_Catalogue gptkb:Hipparcos_Catalogue gptkb:Bright_Star_Catalogue
gptkbp:constellation	gptkb:Cassiopeia
gptkbp:declination	+57° 29′ 58″
gptkbp:diameter	~450 solar radii
gptkbp:discoveredBy	gptkb:John_Flamsteed
gptkbp:distanceFromEarth	~3,400 light years
gptkbp:epoch	gptkb:J2000
gptkbp:locatedIn	gptkb:Cassiopeia
gptkbp:luminosity	~500,000 times Sun
gptkbp:mass	~40 solar masses
gptkbp:metallicity	[Fe/H] ≈ -0.4
gptkbp:notableEvent	underwent major outburst in 2000
gptkbp:otherDesignation	gptkb:BD+57_2564 gptkb:HD_224014 gptkb:HIP_117863 gptkb:HR_9045
gptkbp:parallax	0.96 mas
gptkbp:properMotionRA	-2.37 mas/yr -3.08 mas/yr
gptkbp:radialVelocity	-47.0 km/s
gptkbp:rightAscension	23h 54m 23.0s
gptkbp:spectralType	G2Ia0e
gptkbp:temperature	~7,000 K
gptkbp:variableStar	semiregular variable
gptkbp:bfsParent	gptkb:Yellow_supergiant
gptkbp:bfsLayer	6
https://www.w3.org/2000/01/rdf-schema#label	Rho Cassiopeiae