Omega Nebula [SEP] constellation
Omega Nebula
The Omega Nebula, also known as the Swan Nebula, Checkmark Nebula, and the Horseshoe Nebula (catalogued as Messier 17 or M17 or NGC 6618) is an H II region in the constellation Sagittarius. It was discovered by Philippe Loys de Chéseaux in 1745. Charles Messier catalogued it in 1764. It is located in the rich starfields of the Sagittarius area of the Milky Way.
Characteristics.
The Omega Nebula is between 5,000 and 6,000 light-years from Earth and it spans some 15 light-
.
- List of Messier objects
- Messier object
- New General Catalogue
- Omega Nebula in fiction
External links.
- Messier 17, SEDS Messier pages
- Omega Nebula at ESA/Hubble
- Omega Nebula (Messier 17) at Constellation Guide