NGC 3619 is an unbarred lenticular galaxy located in the northern constellation of Ursa Major. It was discovered by the German-British astronomer William Herschel on March 18, 1790. This galaxy has an apparent visual magnitude of 11.5 and an angular size of . It is located at a distance of , where it is a member of a rich galaxy cluster with at least five members.
The morphological classification of NGC 3619 is (R)SA(s)0+, matching a lenticular galaxy (SA0) with no inner ring (s), and a system of outer shells (R). It has a relatively large amount of gas with a spiral structure, and an asymmetrical circumnuclear gaseous disk. The gas is concentrated at the center where star formation is occurring. The overall optical structure and gas enhancement suggests a past merger or accretion event, possibly as the result of an interaction with NGC 3625 or a dwarf galaxy.
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