Omega Nebula
Emission nebula in Sagittarius / From Wikipedia, the free encyclopedia
Dear Wikiwand AI, let's keep it short by simply answering these key questions:
Can you list the top facts and stats about Omega Nebula?
Summarize this article for a 10 year old
SHOW ALL QUESTIONS
The Omega Nebula, also known as the Swan Nebula, Checkmark Nebula, Lobster Nebula, and the Horseshoe Nebula[1][2] (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 by some of the richest starfields of the Milky Way, figuring in the northern two-thirds of Sagittarius.
Quick Facts Emission nebula, Observation data: J2000 epoch ...
Emission nebula | |
---|---|
H II region | |
Observation data: J2000 epoch | |
Right ascension | 18h 20m 26s[1] |
Declination | −16° 10′ 36″[1] |
Distance | 5,000–6,000 ly |
Apparent magnitude (V) | 6.0[1] |
Apparent dimensions (V) | 11 arcmins |
Constellation | Sagittarius |
Physical characteristics | |
Radius | 11 ly |
Designations | M17, Swan Nebula,[1] Sharpless 45, RCW 160, Gum 81 |
See also: Lists of nebulae |
Close