NGC 3733 is an intermediate spiral galaxy in the constellation of Ursa Major. Its velocity with respect to the cosmic microwave background is 1,358±12 km/s, which corresponds to a Hubble distance of 65.3 ± 4.6 Mly (20.03 ± 1.41 Mpc). Additionally, nine non-redshift measurements give a farther mean distance of 73.66 ± 6.46 Mly (22.583 ± 1.981 Mpc). It was discovered by German-British astronomer William Herschel on 14 April 1789.
