NGC 3689

NGC 3689 is an intermediate spiral galaxy in the constellation of Leo. Its velocity with respect to the cosmic microwave background is 3049 ± 22 km/s, which corresponds to a Hubble distance of 44.97 ± 3.16 Mpc. However, 16 non-redshift measurements give a closer distance of 39.350 ± 2.088 Mpc. The galaxy was discovered by German-British astronomer William Herschel on 6 April 1785.
The SIMBAD database lists NGC 3689 as a radio galaxy.
The SAGA Astronomical Survey for the search for satellite galaxies orbiting another galaxy confirmed the presence of two satellite galaxies for NGC 3689.
One calcium-rich supernova has been observed in NGC 3689: AT 2024mxe was discovered by GOTO on 26 June 2024.