NGC 5033
NGC 5033 is an inclined spiral galaxy located in the constellation Canes Venatici. Its velocity with respect to the cosmic microwave background is, which corresponds to a Hubble distance of. Additionally, 25 non-redshift measurements give a similar distance of. It was discovered by German-British astronomer William Herschel on 1 May 1785.
NGC 5033 has a very bright nucleus and a relatively faint disk. Significant warping is visible in the southern half of the disk. The galaxy's relatively large angular size and relatively high surface brightness make it an object that can be viewed and imaged by amateur astronomers. The galaxy's location relatively near Earth and its active galactic nucleus make it a commonly studied object for professional astronomers.
Supernovae
Four supernovae have been observed in NGC 5033:- SN 1950C was discovered by Fritz Zwicky on 14 May 1950.
- SN 1985L was discovered by Natalya Metlova on 13 June 1985.
- SN 2001gd was discovered by Kōichi Itagaki and Alessandro Dimai on 24 November 2001.
- SN 2025mvn was discovered by ATLAS on 3 June 2025.
Nucleus
Integral field spectroscopic observations of the center of NGC 5033 indicate that the Seyfert nucleus is not located at the kinematic center of the galaxy. This has been interpreted as evidence that this galaxy has undergone a merger. The displacement of the Seyfert nucleus from the kinematic center may destabilize the rotation of gas in the center of the galaxy, which could cause gas to fall into the Seyfert nucleus. The gas would be compressed by the enormous gravitational forces in the center of the Seyfert nucleus and become hot, thus making the nucleus appear bright or "active".