One supernova has been observed in NGC 5485: SN 1982W (TypeI, mag. 15) was discovered by Miklós Lovas on 14 December 1982. The original report had mistakenly identified the host galaxy as NGC 5473, but R. Wood and J. Sinclair at the Royal Greenwich Observatory correctly confirmed the host as NGC 5485.
↑Aihara, Hiroaki; etal. (2011). "The Eighth Data Release of the Sloan Digital Sky Survey: First Data from SDSS-III". The Astrophysical Journal Supplement Series. 193 (2): 29. arXiv:1101.1559. doi:10.1088/0067-0049/193/2/29.