Hercules Cluster (Armin Unterwandling)

Celestial hemisphere: Northern · Constellation: Hercules (Her) · Contains: Hercules Globular Cluster · M 13 · NGC 6205 · NGC 6207

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Hercules Cluster

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Hercules Cluster

M13 is a very large and bright globular star cluster located in the constellation Hercules. It is the most prominent and spectacular of the globular clusters in the northern sky. M13 lies on the western side of the conspicuous Keystone formation, a distinctive group of four stars in Hercules. M13 is located directly between the stars Eta Herculis and Zeta Herculis.
Globular clusters such as M13 are dense concentrations of roughly 10,000 to 1 million very old stars ranging in age from 12 to 20 billion years old. About 200 globular clusters have been found near the center of our galaxy, the Milky Way. M13 is one of the nearest globular clusters to Earth. At a distance of about 22,800 light -years,its apparent diameter of 23 arc minutes corresponds to a linear diameter of roughly 150 light-years. However, the central core is about 100 light-years in diameter, while some of its outlying stars reach as far out as 200 light-years from the core.
More than 30,000 stars have been counted in the core region an there are probably more than a million stars in the whole cluster.
The total luminosity of M13 is 300,000 times greater than that of the sun.

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	Distinct awarded users	Total awarded images
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	Image of the day	Top pick	Top pick nominations	Total submitted
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	Image of the day	Top pick	Top pick nominations	Total submitted
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The “AstroBin Image of the Day and Top Picks”, or IOTD/TP, is a long-running system to promote beautiful, interesting, peculiar, or otherwise amazing astrophotographs, with a focus on technical excellence. Learn more.

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Hercules Cluster

Hercules Cluster

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