NGC 3535 is an unbarred spiral galaxy in the constellation of Leo. 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 18 April 1784.
According to the SIMBAD database, NGC 3535 is a radio galaxy, i.e. it has giant regions of radio emission extending well beyond its visible structure.
Supernova One supernova has been observed in NGC 3535: SN 2023hrn (Type Ia, mag. 18.4) was discovered by ATLAS on 8 May 2023.
See also List of NGC objects (3001–4000)
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