NGC 6934

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NGC 6934
NGC 6934 Hubble WikiSky.jpg
NGC 6934 by Hubble Space Telescope; 3.5′ view
Credit: NASA/STScI/WikiSky
Observation data (J2000 epoch)
Class VIII[1]
Constellation Delphinus
Right ascension 20h 34m 11.37s[2]
Declination +07° 24′ 16.1″[2]
Distance 52 kly (16 kpc)[3]
Apparent magnitude (V) 8.83[4]
Apparent dimensions (V) 8.4′[4]
Physical characteristics
Mass 2.95×105[5] M
Metallicity –1.47[5] dex
Other designations Caldwell 47
See also: Globular cluster, List of globular clusters

NGC 6934 (also known as Caldwell 47) is a globular cluster[6] in the constellation Delphinus, about 50,000 light years distant.[4] It was discovered by William Herschel on 24 September 1785.[4]

References[edit]

  1. ^ Shapley, Harlow; Sawyer, Helen B. (August 1927), "A Classification of Globular Clusters", Harvard College Observatory Bulletin (849): 11–14, Bibcode:1927BHarO.849...11S. 
  2. ^ a b Goldsbury, Ryan et al. (December 2010), "The ACS Survey of Galactic Globular Clusters. X. New Determinations of Centers for 65 Clusters", The Astronomical Journal 140 (6): 1830–1837, arXiv:1008.2755, Bibcode:2010AJ....140.1830G, doi:10.1088/0004-6256/140/6/1830. 
  3. ^ Hessels, J. W. T. et al. (November 2007), "A 1.4 GHz Arecibo Survey for Pulsars in Globular Clusters", The Astrophysical Journal 670 (1): 363–378, arXiv:0707.1602, Bibcode:2007ApJ...670..363H, doi:10.1086/521780. 
  4. ^ a b c d "NGC 6934". SEDS. Retrieved 2010-10-09. 
  5. ^ a b Boyles, J. et al. (November 2011), "Young Radio Pulsars in Galactic Globular Clusters", The Astrophysical Journal 742 (1): 51, arXiv:1108.4402, Bibcode:2011ApJ...742...51B, doi:10.1088/0004-637X/742/1/51. 
  6. ^ "SIMBAD Astronomical Object Database". Results for NGC 6934. Retrieved 2007-04-21. 

External links[edit]

Coordinates: Sky map 20h 34m 11.5s, +07° 24′ 14.9″