Carl Keenan Seyfert (February 11 1911 – June 13 1960) was an American astronomer. He was born in Cleveland, Ohio.

He studied Seyfert galaxies, which are named after him. Seyfert's Sextet, a group of galaxies, is also named after him.

External links

• http://www.seds.org/messier/xtra/Bios/seyfert.html