| NGC 6822 | |
|---|---|
 NGC 6822 from ESO's Wide Field Imager at La Silla Observatory | |
| Observation data (J2000 epoch) | |
| Constellation | Sagittarius |
| Right ascension | 19h 44m 56.6s[1] |
| Declination | −14° 47′ 21″[1] |
| Redshift | −57 ± 2 km/s (−35.4 ± 1.2 mi/s)[1] |
| Distance | 1.63 ± 0.03 Mly (500 ± 10 kpc)[2][3][4] |
| Apparent magnitude (V) | 9.3[1] |
| Characteristics | |
| Type | IB(s)m[1] |
| Apparent size (V) | 15.5′ × 13.5′[1] |
| Other designations | |
| Barnard's Galaxy, DDO 209, Caldwell 57, IC 4895, PGC 63616[1] | |
Preview warning: Page using Template:Infobox galaxy with unknown parameter "1 = NGC 6822 from [[ESO]]'s W..."
Preview warning: Page using Template:Infobox galaxy with unknown parameter "image_size"
NGC 6822 (also known as Barnard's Galaxy, IC 4895, or Caldwell 57) is a barred irregular galaxy approximately 1.6 million light-years away in the constellation Sagittarius. Part of the Local Group of galaxies, it was discovered by E. E. Barnard in 1884, with a six-inch refractor telescope. It is the closest non-satellite galaxy to the Milky Way, but lies just outside its virial radius.[5] It is similar in structure and composition to the Small Magellanic Cloud. It is about 7,000 light-years in diameter.[6]
- ^ a b c d e f g "NASA/IPAC Extragalactic Database", Results for NGC 6822, retrieved 2007-03-15
- ^ Karachentsev et al. 2004
- ^ Karachentsev & Kashibadze 2006
- ^ Cannon et al. 2006
- ^ Cite error: The named reference
Zhangwas invoked but never defined (see the help page). - ^ "NGC 6822: Barnard's Galaxy". APOD. NASA. 8 February 2013.