Ring Nebula (M57, NGC 6720)
Abstract
A planetary nebula in the constellation Lyra, position RA 18 h 53.6 m, dec. +33° 02'. It is ninth magnitude and measures 70'' by 150''; the central star is only fifteenth magnitude. Its telescopic appearance resembles a smoke-ring....
- Publication:
-
Encyclopedia of Astronomy and Astrophysics
- Pub Date:
- November 2000
- DOI:
- 10.1888/0333750888/5323
- Bibcode:
- 2000eaa..bookE5323.
- Keywords:
-
- Interstellar Medium;
- Interstellar Medium Objects