NGC 3432 is an edge-on spiral galaxy that can be found in the northern constellation of Leo Minor.

[2] It is interacting with UGC 5983, a nearby dwarf galaxy, and features tidal filaments and intense star formation.

NGC 3432 has an active galactic nucleus of the LINER type with a nuclear HII region.

[11] It was located 123″ east and 180″ north of the galactic nucleus, and aligned with an H II region (or spiral arm) of the galaxy.

[12] This appeared similar to a type IIn supernova (designated SN 2000ch), but it peaked below the typical luminosity of these events.