NGC 3390 is a barred spiral galaxy located approximately 90 million light-years away in the constellation Leo. It was discovered by the astronomer William Herschel on March 24, 1784. This galaxy is notable for its bright core and well-defined spiral arms, which are characteristic features of barred spiral galaxies. The galaxy is part of the Leo I Group, a collection of galaxies that includes several other notable members. NGC 3390 has an apparent magnitude of about 12.5, making it a faint object that requires a telescope for observation. Its structure and composition provide valuable insights into the formation and evolution of galaxies.