NGC 3861

NGC 3861 is a large barred spiral galaxy with a ring-like structure located about 310 million light-years away in the constellation Leo. It was discovered by astronomer John Herschel on March 23, 1827. NGC 3861 is a member of the Leo Cluster and has a normal amount of neutral hydrogen (H I) and ionised hydrogen (H II).

NGC 3861 is a low luminosity type II Seyfert galaxy. However, it is also classified as a LINER galaxy.

On March 7, 2014, a type Ia supernova designated as SN 2014aa was discovered in NGC 3861.