NGC 6541

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NGC 6541
NGC 6541 WFC3 275 336 438 Wiki.jpg
NGC 6541, imaged by the Hubble Space Telescope
Observation data (J2000 epoch)
Class III[1]
Constellation Corona Australis
Right ascension 18h 08m 02.36s[2]
Declination –43° 42′ 53.6″[2]
Distance 22.8 kly (7.0 kpc)[3]
Apparent magnitude (V) 6.3
Apparent dimensions (V) 15′
Physical characteristics
Mass 5.72×105[4] M
Metallicity  = –1.53[5] dex
Estimated age 12.93 Gyr[5]
Other designations Caldwell 78
See also: Globular cluster, List of globular clusters

NGC 6541 (also known as Caldwell 78) is a globular cluster in the southern constellation of Corona Australis. It is estimated to be around 14 billion years old.[6]

The globular cluster was discovered by Niccolò Cacciatore at the Palermo Astronomical Observatory, Sicily, on March 19, 1826. It was independently found by James Dunlop on July 3, 1826.

NGC 6541

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, Bibcode:2010AJ....140.1830G, arXiv:1008.2755Freely accessible, doi:10.1088/0004-6256/140/6/1830. 
  3. ^ Paust, Nathaniel E. Q.; et al. (February 2010), "The ACS Survey of Galactic Globular Clusters. VIII. Effects of Environment on Globular Cluster Global Mass Functions", The Astronomical Journal, 139 (2): 476–491, Bibcode:2010AJ....139..476P, doi:10.1088/0004-6256/139/2/476. 
  4. ^ Boyles, J.; et al. (November 2011), "Young Radio Pulsars in Galactic Globular Clusters", The Astrophysical Journal, 742 (1): 51, Bibcode:2011ApJ...742...51B, arXiv:1108.4402Freely accessible, doi:10.1088/0004-637X/742/1/51. 
  5. ^ a b Forbes, Duncan A.; Bridges, Terry (May 2010), "Accreted versus in situ Milky Way globular clusters", Monthly Notices of the Royal Astronomical Society, 404 (3): 1203–1214, Bibcode:2010MNRAS.404.1203F, arXiv:1001.4289Freely accessible, doi:10.1111/j.1365-2966.2010.16373.x. 
  6. ^ O'Meara, Stephen James (2011). Deep-Sky Companions: The Secret Deep. Cambridge, United Kingdom: Cambridge University Press. p. 322. ISBN 0521198763. 

External links[edit]

Coordinates: Sky map 18h 08m 02s, −43° 53′ 00″