Properties (23)
| Predicate | Object |
|---|---|
| gptkbp:instanceOf |
planetary nebula
|
| gptkbp:age |
approximately 8,000 years
|
| gptkbp:appearsIn |
small telescopes
|
| gptkbp:contains |
ionized gas
|
| gptkbp:diameter |
approximately 1 light-year
|
| gptkbp:emissionsStandard |
H-alpha
|
| gptkbp:established |
gptkb:Antoine_Darquier_de_Pellepoix
|
| gptkbp:exhibits |
Messier catalog
|
| gptkbp:firstDescribedBy |
William Herschel
|
| gptkbp:has |
complex structure
|
| gptkbp:hasRecognition |
8.8
|
| https://www.w3.org/2000/01/rdf-schema#label |
Messier 57
|
| gptkbp:length |
approximately 2,300 light-years
|
| gptkbp:locatedIn |
Lyra_constellation
|
| gptkbp:majorCity |
a white dwarf
|
| gptkbp:partOf |
gptkb:Messier_objects
|
| gptkbp:previouslyKnownAs |
The Ring Nebula
|
| gptkbp:releaseYear |
1779
|
| gptkbp:shape |
ring-like
|
| gptkbp:size |
about 1 arcminute across
|
| gptkbp:type |
O-type star
emission nebula |
| gptkbp:visitedBy |
gptkb:Hubble_Space_Telescope
|