|
gptkbp:instanceOf
|
gptkb:star
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
|
|
https://www.w3.org/2000/01/rdf-schema#label
|
Rho Cassiopeiae
|
|
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
|