|
gptkbp:instance_of
|
gptkb:Nebula_Award
gptkb:star
|
|
gptkbp:apparent_magnitude
|
8.0
13.1
|
|
gptkbp:categories
|
NGC designation
|
|
gptkbp:contains
|
central star
|
|
gptkbp:declination
|
-20° 50' 13"
-20° 50' 13''
|
|
gptkbp:diameter
|
2.5 light years
|
|
gptkbp:discovered_by
|
gptkb:William_Herschel
gptkb:Paul_W._Hodge
|
|
gptkbp:discovery_year
|
1825
1947
|
|
gptkbp:distance_from_earth
|
650 light years
700 light years
|
|
gptkbp:emissions_standard
|
yes
|
|
gptkbp:exhibition
|
gptkb:New_General_Catalogue
gptkb:Messier_catalog
|
|
gptkbp:features
|
ring structure
|
|
gptkbp:has_central_star
|
gptkb:HD_82054
|
|
gptkbp:has_color
|
blue-green
|
|
gptkbp:has_function
|
ring structure
|
|
gptkbp:has_planetary_nebula_type
|
gptkb:Type_I
|
|
gptkbp:has_radius
|
0.5 light years
0.8 light years
|
|
gptkbp:has_reflection_nebula
|
no
|
|
gptkbp:has_spectral_type
|
O-type star
|
|
https://www.w3.org/2000/01/rdf-schema#label
|
NGC 7293
|
|
gptkbp:ingredients
|
molecular hydrogen
|
|
gptkbp:is_analyzed_in
|
chemical composition
light pollution effects
|
|
gptkbp:is_associated_with
|
stellar evolution
planetary nebulae research
|
|
gptkbp:is_considered_as
|
one of the closest planetary nebulae
a cosmic landmark
a target for amateur telescopes
|
|
gptkbp:is_described_as
|
gptkb:academic_journals
|
|
gptkbp:is_examined_in
|
stellar nucleosynthesis
|
|
gptkbp:is_explored_in
|
gptkb:space_mission
its evolutionary history
|
|
gptkbp:is_featured_in
|
astronomy textbooks
|
|
gptkbp:is_known_for
|
its intricate structure
its visual beauty
|
|
gptkbp:is_located_in
|
gptkb:Aquarius_constellation
|
|
gptkbp:is_noted_for
|
its symmetry
its color contrast
|
|
gptkbp:is_observed_in
|
gptkb:Hubble_Space_Telescope
amateur astronomers
radio telescopes
infrared wavelengths
optical telescopes
|
|
gptkbp:is_part_of
|
gptkb:interstellar_medium
gptkb:Milky_Way_galaxy
Hubble Space Telescope observations
stellar nursery
galactic structure
NGC catalog
cosmic web
local bubble
|
|
gptkbp:is_popular_in
|
astrophotography
|
|
gptkbp:is_referenced_in
|
astronomy databases
|
|
gptkbp:is_studied_for
|
its expansion rate
stellar wind dynamics
its ionization structure
|
|
gptkbp:is_studied_in
|
gptkb:astronomy
|
|
gptkbp:is_used_in
|
educational purposes
|
|
gptkbp:is_visible_from
|
yes
southern hemisphere
|
|
gptkbp:known_as
|
gptkb:Helix_Nebula
gptkb:The_Helix_Nebula
|
|
gptkbp:lighting
|
high
|
|
gptkbp:located_in
|
constellation Aquarius
|
|
gptkbp:photography
|
professional astronomers
|
|
gptkbp:right_ascension
|
22h 29m 38s
22h 29m 38.0s
|
|
gptkbp:type
|
gptkb:Nebula_Award
|
|
gptkbp:bfsParent
|
gptkb:Aquarius
|
|
gptkbp:bfsLayer
|
4
|