NGC 391


NGC 391 is an unbarred lenticular galaxy located in the constellation Cetus. Its velocity with respect to the cosmic microwave background is, which corresponds to a Hubble distance of. Additionally, one non-redshift measurement gives a farther distance of. It was discovered by American astronomer George Bond on January 8, 1853. It was described by Dreyer as "faint, small, mottled but not resolved."

Supernova

One supernova has been observed in NGC 391: SN2025rat was discovered by Zwicky Transient Facility on 11 July 2025.