NGC 3391 is a barred spiral galaxy located in the constellation Leo. It is approximately 50 million light-years away from Earth and is part of the Virgo Cluster. This galaxy is notable for its distinct spiral arms and bright central bar structure, which are characteristic features of barred spiral galaxies. Discovered by the astronomer William Herschel in 1784, NGC 3391 has a visual magnitude of about 13.5, making it faint but observable with moderate-sized telescopes. Its unique structure and position in the sky make it an interesting subject for astronomers studying galaxy formation and evolution.