Beehive Cluster (Praesepe)

URI: https://gptkb.org/entity/Beehive_Cluster_(Praesepe)
GPTKB entity
Statements (51)
Predicate Object
gptkbp:instanceOf gptkb:open_cluster
gptkbp:age about 600 million years
gptkbp:alsoKnownAs gptkb:Messier_44
gptkb:NGC_2632
gptkb:M44
gptkbp:apparentMagnitude 3.7
gptkbp:arabicName Al-Nathrah
gptkbp:CaldwellNumber C 49
gptkbp:cataloguedIn gptkb:Caldwell_Catalogue
gptkb:Messier_Catalogue
gptkb:NGC_Catalogue
gptkbp:constellation gptkb:cancer
gptkbp:contains gptkb:white_dwarfs
main sequence stars
red giants
gptkbp:coreRadius 3.5 light-years
gptkbp:declination +19° 41′
gptkbp:diameter about 39 light-years
gptkbp:discoveredBy known since ancient times
gptkbp:distanceFromEarth about 610 light-years
gptkbp:epoch gptkb:J2000
gptkbp:firstCataloguedBy gptkb:Ptolemy
gptkbp:galacticLatitude +32.5°
205.9°
gptkbp:hasBinaryStars yes
gptkbp:hasChineseName Jishi Qi
gptkbp:hasExoplanetHostStars yes
gptkbp:historicalSignificance known since antiquity
https://www.w3.org/2000/01/rdf-schema#label Beehive Cluster (Praesepe)
gptkbp:location gptkb:Milky_Way
gptkbp:mass about 500-600 solar masses
gptkbp:metallicity [Fe/H] ≈ 0.0
gptkbp:notableFor rich in stars
one of the nearest open clusters to Earth
visible to the naked eye as a nebulous object
gptkbp:notableMembers gptkb:Epsilon_Cancri
gptkb:HD_73666
gptkb:HD_73711
gptkbp:observedBy gptkb:Galileo_Galilei
gptkb:Charles_Messier
gptkbp:properMotionRA yes
gptkbp:rating about 1000
gptkbp:rightAscension 08h 40.4m
gptkbp:shape loose cluster
gptkbp:tidalRadius 12 light-years
gptkbp:type gptkb:open_cluster
gptkbp:variableStar yes
gptkbp:visibleToNakedEye yes
gptkbp:英文名 Phatne
gptkbp:bfsParent gptkb:Gamma_Cancri
gptkbp:bfsLayer 8