Beta Gruis

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

GPTKB entity

Predicate	Object
gptkbp:instanceOf	gptkb:star red supergiant
gptkbp:apparentMagnitude	2.1
gptkbp:catalogue	gptkb:Henry_Draper_Catalogue gptkb:Hipparcos_Catalogue gptkb:2MASS gptkb:Bright_Star_Catalogue
gptkbp:colorIndexB-V	+1.64 +1.92
gptkbp:declination	-46° 53′ 04.6″
gptkbp:diameter	about 180 solar radii
gptkbp:discoveredBy	known since antiquity
gptkbp:distanceFromEarth	about 170 light-years
https://www.w3.org/2000/01/rdf-schema#label	Beta Gruis
gptkbp:locatedIn	gptkb:constellation_Grus
gptkbp:luminosity	about 3,000 times Sun
gptkbp:mass	about 3 solar masses
gptkbp:otherDesignation	gptkb:2MASS_J22424005-4653046 gptkb:CD-47_14270 gptkb:HD_214952 gptkb:HIP_112122 gptkb:HR_8636 gptkb:SAO_231498
gptkbp:parallax	0.17 mas 19.71 mas
gptkbp:properMotionRA	+48.14 mas/yr -17.16 mas/yr
gptkbp:rightAscension	22h 42m 40.050s
gptkbp:spectralType	M5III
gptkbp:variabilityPeriod	90 days 37 days
gptkbp:variableStar	semiregular variable
gptkbp:visibleToNakedEye	true
gptkbp:bfsParent	gptkb:Kraunchwadh
gptkbp:bfsLayer	6