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gptkbp:instance_of
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gptkb:nebula
|
|
gptkbp:bfsLayer
|
3
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gptkbp:bfsParent
|
gptkb:Hubble_Space_Telescope
|
|
gptkbp:age
|
approximately 1,600 years
|
|
gptkbp:apparent_magnitude
|
8.8
|
|
gptkbp:area
|
about 1 light year
|
|
gptkbp:body_style
|
ring-like
|
|
gptkbp:composed_of
|
hydrogen and helium
|
|
gptkbp:contains
|
ionized gas
a white dwarf star
|
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gptkbp:depicted_in
|
gptkb:Northern_Hemisphere
summer months
amateur astronomers
|
|
gptkbp:discovered_by
|
gptkb:Antonie_van_Leeuwenhoek
|
|
gptkbp:distance
|
approximately 2,000 light years
|
|
gptkbp:emissions_standard
|
H-alpha
|
|
gptkbp:exhibition
|
gptkb:NGC_6720
|
|
gptkbp:expansion_plans
|
20 km/s
|
|
gptkbp:famous_for
|
its beautiful appearance
|
|
gptkbp:features
|
bipolar outflows
|
|
gptkbp:first_appearance
|
1779
|
|
gptkbp:has
|
a complex structure
a bright central region
a central star that is cooling
|
|
gptkbp:has_spectral_type
|
O-type star
|
|
https://www.w3.org/2000/01/rdf-schema#label
|
The Ring Nebula
|
|
gptkbp:is_a
|
gptkb:nebula
|
|
gptkbp:is_considered
|
a classic example of a planetary nebula
|
|
gptkbp:is_known_for
|
gptkb:Messier_57
its symmetry
its ring structure
|
|
gptkbp:is_located_near
|
the star Vega
|
|
gptkbp:is_observed_in
|
gptkb:Hubble_Space_Telescope
various wavelengths
|
|
gptkbp:is_part_of
|
gptkb:the_Milky_Way_galaxy
the Messier catalog
the planetary nebula class
|
|
gptkbp:is_studied_in
|
gptkb:observatory
astrophysics
stellar evolution
|
|
gptkbp:is_surrounded_by
|
a halo of gas
|
|
gptkbp:is_used_in
|
educational astronomy
|
|
gptkbp:located_in
|
constellation Lyra
declination +33° 01′ 42″
right ascension 18h 53m 35.1s
|
|
gptkbp:notable_for
|
its bright colors
|
|
gptkbp:photography
|
Amateur astronomers
|
|
gptkbp:research
|
telescopes
|
|
gptkbp:size
|
approximately 1 arcminute across
|
|
gptkbp:type
|
gptkb:nebula
|