M57

URI: https://gptkb.org/entity/M57
GPTKB entity
Statements (28)
Predicate Object
gptkbp:instanceOf gptkb:planetary_nebula
gptkbp:alsoKnownAs gptkb:Ring_Nebula
gptkbp:angularSize about 1.3 arcminutes
gptkbp:apparentMagnitude 8.8
15.75
gptkbp:bestViewedIn summer
gptkbp:catalogue gptkb:Messier_Catalogue
gptkbp:catalogueNumber gptkb:Messier_57
gptkbp:centralStarType white dwarf
gptkbp:declination +33° 01′ 45.03″
gptkbp:diameter about 1 light-year
gptkbp:discoveredBy gptkb:Antoine_Darquier_de_Pellepoix
gptkb:Charles_Messier
gptkbp:discoveredIn 1779
gptkbp:distanceFromEarth about 2,300 light-years
gptkbp:epoch gptkb:J2000
gptkbp:expandingShell ionized gas
gptkbp:hasViewOf gptkb:Northern_Hemisphere
https://www.w3.org/2000/01/rdf-schema#label M57
gptkbp:locatedIn constellation Lyra
gptkbp:NGCNumber gptkb:NGC_6720
gptkbp:notableFor ring-like appearance
gptkbp:observedBy amateur telescopes
gptkbp:partOf gptkb:Milky_Way
gptkbp:photographed gptkb:Hubble_Space_Telescope
gptkbp:rightAscension 18h 53m 35.079s
gptkbp:bfsParent gptkb:MTA_Regional_Bus_Operations
gptkbp:bfsLayer 5