|
gptkbp:instance_of
|
gptkb:Nebula_Award
|
|
gptkbp:apparent_magnitude
|
8.8
|
|
gptkbp:best_time_to_visit
|
summer months
|
|
gptkbp:body_shape
|
gptkb:Ring_of_Honor
|
|
gptkbp:contains
|
ionized gas
|
|
gptkbp:contains_star
|
a white dwarf
|
|
gptkbp:coordinates
|
RA 18h 53m 35s, Dec +33° 01′ 42″
|
|
gptkbp:discovered_by
|
gptkb:Charles_Messier
gptkb:Antoine_Darquier_de_Pellepoix
|
|
gptkbp:discovery_year
|
1779
|
|
gptkbp:distance_from_earth
|
approximately 2,300 light years
|
|
gptkbp:exhibition
|
gptkb:Messier_catalog
|
|
gptkbp:famous_for
|
gptkb:popular_culture
|
|
gptkbp:first_appearance
|
gptkb:William_Herschel
|
|
gptkbp:has_color
|
greenish hue
|
|
gptkbp:has_radius
|
about 1 light year
|
|
gptkbp:has_spectral_type
|
O III
O III, H II
|
|
https://www.w3.org/2000/01/rdf-schema#label
|
Messier 57
|
|
gptkbp:illustrated_by
|
gptkb:textbooks
|
|
gptkbp:included
|
astronomical tours
|
|
gptkbp:is_a
|
popular target for telescopes
|
|
gptkbp:is_analyzed_in
|
gptkb:spectroscopy
|
|
gptkbp:is_associated_with
|
the death of a star
|
|
gptkbp:is_connected_to
|
the life cycle of stars
|
|
gptkbp:is_considered_as
|
a classic example of a planetary nebula
|
|
gptkbp:is_described_as
|
stellar nucleosynthesis
astronomical literature
|
|
gptkbp:is_examined_in
|
amateur astrophotographers
|
|
gptkbp:is_explored_in
|
space telescopes
|
|
gptkbp:is_famous_for
|
its visual appearance
|
|
gptkbp:is_known_for
|
its symmetry
|
|
gptkbp:is_located_in
|
gptkb:Lyra
gptkb:Lyra_constellation
|
|
gptkbp:is_notable_for
|
its ring shape
|
|
gptkbp:is_noted_for
|
its central star's brightness
|
|
gptkbp:is_observed_in
|
various wavelengths
star parties
|
|
gptkbp:is_part_of
|
gptkb:Milky_Way_Galaxy
gptkb:Milky_Way_galaxy
the Hubble Space Telescope observations
the cosmic web
the local group of galaxies
the Messier series
the Lyra constellation
|
|
gptkbp:is_referenced_in
|
gptkb:academic_journals
|
|
gptkbp:is_studied_for
|
its chemical composition
|
|
gptkbp:is_studied_in
|
astrophysics
|
|
gptkbp:is_surrounded_by
|
a halo of gas and dust
|
|
gptkbp:is_used_in
|
gptkb:educational_programs
stellar evolution studies
|
|
gptkbp:is_visible_from
|
gptkb:Northern_Hemisphere
dark skies
small telescopes
|
|
gptkbp:known_as
|
gptkb:Ring_Nebula
gptkb:The_Ring_Nebula
|
|
gptkbp:lighting
|
varies with time
|
|
gptkbp:map
|
star catalogs
|
|
gptkbp:photography
|
amateur astronomers
|
|
gptkbp:size
|
about 1 light year across
|
|
gptkbp:type
|
gptkb:Nebula_Award
|
|
gptkbp:bfsParent
|
gptkb:Messier_catalog
gptkb:The_Ring_Nebula
|
|
gptkbp:bfsLayer
|
5
|