Omega Nebula

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Omega Nebula
Emission nebula
H II region
ESO-The Omega Nebula-phot-25a-09-fullres.jpg
Composite images obtained wi the 3.58-metre NTT at La Silla Observatory.
Credit: ESO
Observation data: J2000 epoch
Richt ascension18h 20m 26s[1]
Declination−16° 10′ 36″[1]
Distance5,000-6,000 ly
Apparent magnitude (V)+6.0[1]
Apparent dimensions (V)11 arcmins
DesignationsM17, Swan Nebula,[1] Sharpless 45, RCW 160, Gum 81
See also: Leets o nebulae

The Omega Nebula, an aa kent as the Swan Nebula, Checkmark Nebula, an the Horseshae Nebula[1][2] (catalogued as Messier 17 or M17) is an H II region in the constellation Sagittarius.

References[eedit | eedit soorce]

  1. 1.0 1.1 1.2 1.3 1.4 "SIMBAD Astronomical Database". Results for NGC 6618. Retrieved 2006-11-16.
  2. Holden, Edward S. (January 1876). "The Horseshoe Nebula in Sagittarius" . Popular Science. 8: 269–281.

Coordinates: Sky map 18h 20m 26s, −16° 10′ 36″