NGC 3756

NGC 3756 is a intermediate spiral galaxy in the constellation of Ursa Major. Its velocity with respect to the cosmic microwave background is, which corresponds to a Hubble distance of. Additionally, 28 non-redshift measurements give a similar mean distance of. It was discovered by German-British astronomer William Herschel on 14 April 1789.
NGC 3756 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.

NGC 3898 group

NGC 3756 is a member of the NGC 3898 group, which contains at least nine galaxies. The other members of the group are NGC 3733, NGC 3794, NGC 3846, NGC 3846A, NGC 3850, NGC 3898, NGC 3982, and UGC 6894.

Supernova

One supernova has been observed in NGC 3756:SN 1975T was discovered by Swiss astronomer Paul Wild on 28 December 1975. It reached maximum brightness around 11 January 1976, and although never officially classfied, its light curve suggested that it was a Type II supernova.