NGC 1781


NGC 1781 is a lenticular galaxy in the constellation of Lepus. Its velocity with respect to the cosmic microwave background is, which corresponds to a Hubble distance of. It was discovered by German-British astronomer William Herschel on 6 February 1785. It was also observed by American astronomer Ormond Stone on 11 December 1885, causing it to be listed a second time in the New General Catalogue as NGC 1794.
NGC 1781 is a Seyfert II galaxy, i.e. it has a quasar-like nucleus with very high surface brightnesses whose spectra reveal strong, high-ionisation emission lines, but unlike quasars, the host galaxy is clearly detectable.

Supernova

One supernova has been observed in NGC 1781:SN 2025yrt was discovered by ASAS-SN on 26 September 2025.