Messier 99

URI: https://gptkb.org/entity/Messier_99
GPTKB entity
Statements (34)
Predicate Object
gptkbp:instanceOf gptkb:galaxy
Messier object
NGC object
gptkbp:alternativeName gptkb:Arp_85
gptkb:NGC_4254
gptkb:PGC_39578
gptkb:UGC_7345
gptkb:M99
gptkbp:apparentMagnitude 9.9
gptkbp:apparentSize 5.4′ × 4.7′
gptkbp:catalogueNumber gptkb:NGC_4254
gptkb:M99
gptkbp:constellation gptkb:Coma_Berenices
gptkbp:declination +14° 24′ 59″
gptkbp:diameter ~85,000 light-years
gptkbp:discoveredBy gptkb:Pierre_Méchain
gptkbp:discoveredIn March 15, 1781
gptkbp:distanceFromEarth ~49 million light-years
gptkbp:groupCluster gptkb:Virgo_Cluster
https://www.w3.org/2000/01/rdf-schema#label Messier 99
gptkbp:inclination 42°
gptkbp:locatedIn gptkb:Coma_Berenices
gptkbp:morphologicalType SA(s)c
gptkbp:notableFeature one-armed spiral structure
gptkbp:radialVelocity 2407 km/s
gptkbp:redshift 0.00541
gptkbp:rightAscension 12h 18m 49.6s
gptkbp:supernovaeObserved gptkb:SN_1967H
gptkb:SN_1972Q
gptkb:SN_1986I
gptkbp:bfsParent gptkb:Charles_Messier
gptkb:Virgo_Cluster
gptkb:Virgo_Supercluster
gptkbp:bfsLayer 6