M56 - NGC 6779

Messier 56 (NGC 6779) is a globular cluster located approximately 32,900 light-years from Earth in the constellation Lyra. It was discovered by Charles Messier in 1779 while he was tracking a comet through the region. M56 is a moderately concentrated globular cluster with a Shapley-Sawyer classification of X, indicating a relatively loose structure. The cluster spans about 84 light-years in physical diameter and contains tens of thousands of stars, though it is not among the most massive globulars in the Messier catalog. M56 is approaching us at a velocity of about 145 kilometers per second. The cluster lies roughly halfway along an imaginary line drawn between the bright stars Sulafat (Gamma Lyrae) and Albireo (Beta Cygni), which makes it relatively straightforward to locate via star-hopping. In binoculars, M56 appears as a small, hazy spot of light. Small telescopes of 4 inches show it as a round, granular glow, while telescopes of 8 inches or more can begin to resolve individual stars around the periphery of the cluster under good seeing conditions. M56 has a notably elongated shape when examined carefully, giving it a slightly oval appearance. The cluster is estimated to be about 13.7 billion years old and is relatively metal-poor, typical of old halo globular clusters. While M56 is often overshadowed by the more spectacular Ring Nebula (M57) located in the same constellation, it remains a worthwhile target for observers working through the Messier catalog.

M56 spans about 84 light-years in diameter and is located approximately 32,900 light-years from Earth with a moderately loose concentration.