NGC 7689 is a intermediate spiral galaxy in the constellation of Phoenix. Its velocity with respect to the cosmic microwave background is , which corresponds to a Hubble distance of . Also, 13 non-redshift measurements give a closer mean distance of . It was discovered by Scottish astronomer James Dunlop on 5 September 1826.
NGC 7689 has a possible active galactic nucleus, i.e. it has a compact region at the center of a galaxy that emits a significant amount of energy across the electromagnetic spectrum, with characteristics indicating that this luminosity is not produced by the stars. It is also 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.
One supernova has been observed in NGC 7689: