NGC 6304

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NGC 6304
NGC6304atlas c.jpg
Observation data (J2000.0 [1] epoch)
Class VI [2]
Constellation Ophiuchus [3]
Right ascension 17h 14m 32.25s [1]
Declination −29° 27 43.3 [1]
Distance 19.2 kly [2]
Apparent magnitude (V)9.03 [1]
Apparent dimensions (V)3.8'
Physical characteristics
VHB16.25 [4]
Metallicity  = -0.45 [4] dex
Estimated age~12.3 Gyr [5]
Other designationsBennett 90, [3]

C 1711-294, [1]
ESO 454-2, [1]
ESO 454-SC 002, [6]
GC 4275, [3]
GCl 56, [1]
h 3670, [3]
I 147, [3]
NGC 6304, [1]

VDBH 216

Contents

[1]
See also: Globular cluster, List of globular clusters

NGC 6304 is a globular cluster in the constellation Ophiuchus. William Herschel discovered this star cluster using an 18.5-inch (47 cm) f/13 speculum reflector telescope in 1786. [3] It is about 19,000 light-years away, near the Milky Way's central bulge. [7]

Globular cluster NGC 6304, by HST (WFC3). NGC 6304 WFC3 275 336 438 Wiki.jpg
Globular cluster NGC 6304, by HST (WFC3).

See also

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References

  1. 1 2 3 4 5 6 7 8 9 "NGC 6304". SIMBAD . Centre de données astronomiques de Strasbourg . Retrieved 2012-08-18.
  2. 1 2 "NGC 6304". SEDS . Retrieved 2012-08-18.
  3. 1 2 3 4 5 6 "NGC 6304". Deep Sky Observer's Companion on-line database . Retrieved 2012-08-17.
  4. 1 2 "NGC 6304". A Galactic Globular Cluster Database . Version 11.12. Retrieved 2012-08-18.
  5. Forbes, D. A.; Bridges, T. (2010). "Accreted versus in situ Milky Way globular clusters". Monthly Notices of the Royal Astronomical Society . 404 (3): 1203–1214. arXiv: 1001.4289 . Bibcode:2010MNRAS.404.1203F. doi: 10.1111/j.1365-2966.2010.16373.x . S2CID   51825384.
  6. "NGC 6304". NASA/IPAC Extragalactic Database . Retrieved 2012-08-18.
  7. Crossen, C.; Rhemann, G. (2004), Sky Vistas: Astronomy for Binoculars and Richest-Field Telescopes, Springer-Verlag, p.  254, ISBN   978-3-211-00851-5