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Globular Cluster M68 (also known as Messier Object 68, Messier 68, M68, or NGC 4590) is a globular cluster in the Hydra constellation. It was discovered by Charles Messier in 1780. M58 is at a distance of about 33,000 light years away from Earth.


External links

  • Globular Cluster M68 @ SEDS Messier pages (http://www.seds.org/messier/m/m068.html)

  Results from FactBites:
 
Messier Object 68 (639 words)
Messier mentions a 6th mag star in his description for M68, which is actually a 5.4-mag double star: ADS 8612 (also cataloged as B320), A: 5.4 mag, B: 12.2 mag at PA 152 deg and separation 1.6" (in 1926).
M68 is quite difficult to observe for Northern observers because of its southern declination.
A faint patch in binoculars, the brightest stars of M68 are resolved by telescopes starting from 4-inch aperture under good conditions; these instruments show a mottled round nebulous patch with a bright center, gradually fading to its edges.
Messier M68 - NGC4590 Globular Cluster (95 words)
Charles Messier discovered and catalogued M68 in 1780, describing it as a "nebula without stars below Corvus and Hydra; it is very faint, very difficult to see with refractors; near to it is a 6th magnitude star".
M68 is concentrated globular cluster containing over 100,000 stars, around 250 of which are brighter than absolute magnitude zero.
It appears as a small fuzzy 'star' in small ltelescopes, and larger ones are needed to resolve individual stars.
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