Statements (74)
| Predicate | Object |
|---|---|
| gptkbp:instance_of |
gptkb:star
gptkb:nebula |
| gptkbp:bfsLayer |
4
|
| gptkbp:bfsParent |
gptkb:Lyra
gptkb:M57_motorway |
| gptkbp:age |
around 8,000 years
approximately 6,000 years |
| gptkbp:apparent_magnitude |
8.8
9.0 |
| gptkbp:contains |
central star
ionized gas |
| gptkbp:coordinates |
18h 53m 35.5s, +33° 01′ 43″
18h 53m 35s, +33° 01′ 50″ |
| gptkbp:depicted_in |
gptkb:Northern_Hemisphere
the northern hemisphere with small telescopes |
| gptkbp:diameter |
about 1 light year
|
| gptkbp:discovered_by |
gptkb:William_Herschel
Antonie P. de Grassi |
| gptkbp:distance |
approximately 2,300 light years
approximately 2,300 light-years around 2,300 light years |
| gptkbp:examines |
stellar dynamics research
|
| gptkbp:first_appearance |
1779
|
| gptkbp:has_spectral_type |
O and B stars
|
| gptkbp:has_style |
gptkb:nebula
|
| https://www.w3.org/2000/01/rdf-schema#label |
M57
|
| gptkbp:includes |
star catalogs
|
| gptkbp:ingredients |
various elements like hydrogen and helium
|
| gptkbp:is_analyzed_in |
its expansion rate
its light spectrum |
| gptkbp:is_associated_with |
stellar evolution studies
the study of nebulae |
| gptkbp:is_characterized_by |
a bright central star
|
| gptkbp:is_considered |
a target for future space missions
a significant astronomical object a classic example of a planetary nebula a benchmark for planetary nebula research |
| gptkbp:is_described_as |
astronomical catalogs
|
| gptkbp:is_featured_in |
astronomy education materials
|
| gptkbp:is_known_for |
gptkb:Ring_Nebula
gptkb:the_Ring_Nebula its unique structure |
| gptkbp:is_monitored_by |
changes in brightness
|
| gptkbp:is_noted_for |
its aesthetic beauty in images
|
| gptkbp:is_observed_in |
professional astronomers
spectroscopy techniques astronomical events various wavelengths including optical and infrared |
| gptkbp:is_part_of |
gptkb:the_Milky_Way_galaxy
gptkb:Milky_Way_galaxy the Messier catalog the history of astronomy the study of cosmic phenomena the study of cosmic evolution the Hubble Space Telescope observations the Local Group of galaxies the astronomical community's interest the planetary nebula phase of stellar evolution |
| gptkbp:is_referenced_in |
gptkb:literary_work
|
| gptkbp:is_related_to |
the study of white dwarfs
|
| gptkbp:is_studied_in |
astrophysics
its chemical composition its physical properties |
| gptkbp:is_surrounded_by |
a faint halo of gas
|
| gptkbp:is_used_for |
a reference object in astronomy
|
| gptkbp:located_in |
gptkb:Lyra_constellation
the constellation Lyra Galactic coordinates (l, b): 60.0°, +25.0° |
| gptkbp:notable_for |
its ring-like appearance
|
| gptkbp:photography |
amateur astronomers
|
| gptkbp:size |
about 1 light-year across
|
| gptkbp:type |
gptkb:nebula
|
| gptkbp:year_created |
1779
|