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| caption =
| caption =
| credit = [http://www.ipac.caltech.edu/2mass/ 2MASS]
| credit = [http://www.ipac.caltech.edu/2mass/ 2MASS]
| epoch = [[J2000.0]] <ref name=SIMBAD>{{cite simbad |title=NGC 6304 |access-date=2012-08-18}}</ref>
| epoch = [[J2000.0]]<ref name=SIMBAD>{{cite simbad |title=NGC 6304 |access-date=2012-08-18}}</ref>
| ra = {{RA|17|14|32.25}} <ref name=SIMBAD/>
| ra = {{RA|17|14|32.25}} <ref name=SIMBAD/>
| dec = {{DEC|-29|27|43.3}} <ref name=SIMBAD/>
| dec = {{DEC|-29|27|43.3}} <ref name=SIMBAD/>
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|access-date=2012-08-18
|access-date=2012-08-18
}}</ref>
}}</ref>
| constellation = [[Ophiuchus]] <ref name=DOCdb/>
| constellation = [[Ophiuchus]]<ref name=DOCdb/>
| dist_ly = 19.2 kly <ref name=SEDS/>
| dist_ly = 19.2 kly <ref name=SEDS/>
| dist_pc =
| dist_pc =

Revision as of 03:56, 24 June 2021

NGC 6304

Credit: 2MASS
Observation data (J2000.0[1] epoch)
ClassVI [2]
ConstellationOphiuchus[3]
Right ascension17h 14m 32.25s [1]
Declination−29° 27′ 43.3″ [1]
Distance19.2 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[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).

See also

References

  1. ^ a b c d e f g h i "NGC 6304". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2012-08-18.
  2. ^ a b "NGC 6304". SEDS. Retrieved 2012-08-18.
  3. ^ a b c d e f "NGC 6304". Deep Sky Observer's Companion on-line database. Retrieved 2012-08-17.
  4. ^ a b "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.{{cite journal}}: CS1 maint: unflagged free DOI (link)
  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


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