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Messier 53 (also known as M53 or NGC 5024) is a globular cluster in the Coma Berenices constellation. It was discovered by Johann Elert Bode in 1775. M53 is one of the more outlying globular clusters, being about light-years away from the Galactic Center, and almost the same distance (about ) from the Solar system. The cluster has a core radius ("rc") of 2.18 pc, a half-light radius ("rh") of 5.84 pc, and a tidal radius ("rtr") of 239.9 pc.