SN 185 was a transient astronomical event observed in AD 185, likely a supernova. The transient occurred in the direction of Alpha Centauri, between the constellations Circinus and Centaurus, centered at RA 14ʰ 43ᵐ Dec −62° 30′, in Circinus.

Date: December 7, 185 AD

Remnant: Shell

Galactic coordinates: G315.4−2.3

Peak apparent magnitude: "as much as -8"

Constellation: Circinus and Centaurus

Host galaxy: Milky Way