NGC 6934

NGC 6934
NGC 6934 by Hubble Space Telescope; 3.5′ view Credit: NASA/STScI/WikiSky
Observation data (J2000 epoch)
Class	VIII[1]
Constellation	Delphinus
Right ascension	20^h 34^m 11.37^s[2]
Declination	+07° 24′ 16.1″[2]
Distance	52×10^3 ly (16 kpc)[3]
Apparent magnitude (V)	8.83[4]
Apparent dimensions (V)	8.4′[4]
Physical characteristics
Mass	2.95×10^5[5] M☉
Metallicity	${\displaystyle {\begin{smallmatrix}\left[{\ce {Fe}}/{\ce {H}}\right]\end{smallmatrix}}}$ = –1.47[5] dex
Other designations	Caldwell 47

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

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. 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. "NGC 6934". SEDS. Retrieved 2010-10-09.
5. 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

• NGC 6934 on WikiSky: DSS2, SDSS, GALEX, IRAS, Hydrogen α, X-Ray, Astrophoto, Sky Map, Articles and images
• A Distant Backwater of the Milky Way — ESA/Hubble Picture of the Week

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