Description of NGC 6681 Messier 70 (also known as M70 or NGC 6681) is a globular cluster in the constellation Sagittarius. It was discovered by Charles Messier in 1780.
M70 is at a distance of about 29,300 light years away from Earth and close to the Galactic Center. It is roughly the same size and luminosity as its neighbour in space, Globular Cluster M69. Only 2 variable stars are known within this cluster.
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Image Image of the cluster from the Digital Sky Survey
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SEDS data Web Links for this cluster Users comments for this cluster Selected biblio Paper n. 1
Massari, D. et al. Hubble Space Telescope Absolute Proper Motions Of NGC 6681 (M70) and the Sagittarius Dwarf Spheroidal Galaxy 2013 , The Astrophysical Journal, Volume 779, Issue 1, article id. 81, 9 pp.(NGC 6681 cmd ) Paper n. 2
Watson, Alan M. et al. Far-ultraviolet imaging of the globular cluster NGC 6681 with WFPC2 1994 , Astrophysical Journal, Part 2 - Letters, vol. 435, no. 1, p. L55-L58(NGC 6681 cmd ) Paper n. 3
Pryor, Carlton; McClure, Robert D.; Fletcher, J. M.; Hesser, James E. Mass-to-light ratios for globular clusters. I - The centrally concentrated clusters NGC 6624, M28 (NGC 6626), and M70 (NGC 6681) 1989 , Astronomical Journal, vol. 98, p. 596-610(NGC 6626 NGC 6624 NGC 6681 NGC 6584 ) See all items
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Tutor(s) for this cluster:
Davide Massari (See how to adopt a cluster)
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