Astronomy:NGC 6204

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Short description: Open cluster in the constellation Ara
NGC 6204
NGC 6204.png
NGC 6204 (taken with Stellarium)
Observation data (J2000 epoch)
Right ascension 16h 46m 08.(4)s[1]
Declination−47° 01′ 1(2)″[1]
Distance3,540 ly (1,085 pc)[1]
Apparent magnitude (V)8.2[2]
Apparent dimensions (V)6′[2]
Physical characteristics
Other designationsCollinder 312, Lund 723
See also: Open cluster, List of open clusters

NGC 6204 is an open cluster in the constellation Ara, lying close to the galactic equator.[3] It is 3,540 ly (1,085 pc) distant from Earth. The cluster was discovered on 13 May 1826 by British astronomer James Dunlop.[4]

Map showing the location of NGC 6204


  1. 1.0 1.1 1.2 Kharchenko, N. V. et al. (2013), "Global survey of star clusters in the Milky Way. II. The catalogue of basic parameters", Astronomy & Astrophysics 558: A53, doi:10.1051/0004-6361/201322302, Bibcode2013A&A...558A..53K. 
  2. 2.0 2.1 Inglis, Mike (2013), Observer's Guide to Star Clusters, The Patrick Moore Practical Astronomy Series, Springer Science & Business Media, p. 27, ISBN 978-1461475675,, 
  3. Dunlop, Storm (2005). Atlas of the Night Sky. Collins. ISBN 978-0-00-717223-8. 
  4. Seligman, Courtney. "NGC Objects: NGC 6200 - 6249". 

Further reading

  • Carraro, Giovanni; Munari, Ulisse (2004): A multicolour CCD photometric study of the open clusters NGC 2866, Pismis 19, Westerlund 2, ESO96-SC04, NGC 5617 and NGC 6204; Monthly Notices of the Royal Astronomical Society 347 (2), S. 625–631

External links