NGC 6723

NGC 6723
NGC 6723 by Hubble Space Telescope; 3.5′ view Credit: Anglo-Australian Observatory/STScI/WikiSky
Observation data (J2000 epoch)
Class	VII[1]
Constellation	Sagittarius
Right ascension	18^h 59^m 33.15^s[2]
Declination	–36° 37′ 56.1″[2]
Distance	28.4 kly (8.7 kpc)[3]
Apparent magnitude (V)	6.8[4]
Apparent dimensions (V)	11′[4]
Physical characteristics
Mass	3.57×10^5[3] M☉
Metallicity	${\displaystyle {\begin{smallmatrix}\left[{\ce {Fe}}/{\ce {H}}\right]\end{smallmatrix}}}$ = –0.96[5] dex
Estimated age	13.06 Gyr[5]

NGC 6723 is a globular cluster^[6] in the constellation Sagittarius. Its magnitude is given between 6 and 6.8, and diameter between 7 and 11 arcminutes, class VII with stars magnitude 14 and dimmer. It is near the border of Sagittarius and Corona Australis.

Map showing location of NGC 6723 (Roberto Mura)

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. 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.
4. "Data for NGC 6723". NGC/IC Project. Retrieved 19 November 2013.
5. 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, arXiv:1001.4289, Bibcode:2010MNRAS.404.1203F, doi:10.1111/j.1365-2966.2010.16373.x.
6. "SIMBAD Astronomical Object Database". Results for NGC 6723. Retrieved 2007-04-21.

• Robert Burnham, Jr, Burnham's Celestial Handbook: An observer's guide to the universe beyond the solar system, vol 3, p.1558

External links

• NGC 6723 on WikiSky: DSS2, SDSS, GALEX, IRAS, Hydrogen α, X-Ray, Astrophoto, Sky Map, Articles and images
• NGC 6723

Coordinates: 18^h 59^m 33.1^s, −36° 37′ 53.3″