NGC 4991 is a spiral galaxy in the constellation of Virgo.[1][2] It is located 835 million light-years from the Solar System. NGC 4991 was first discovered on April 30, 1864 by German astronomer, Albert Marth.[3] It is considered as a radio galaxy by the SIMBAD database.[4] It has an active galactic nucleus and contains high amounts of ionized hydrogen.[2]
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