NGC_7721
NGC 7721
Galaxy in the constellation Aquarius
NGC 7721 is a spiral galaxy located around 79 million light-years away in the constellation Aquarius.[1][2] NGC 7721 was discovered on September 10, 1785, by the astronomer William Herschel, and its diameter is 70,000 light-years across.[1] NGC 7721 is not known to have much star formation, and it is not known to have an active galactic nucleus.[1][3] A supernova was observed in NGC 7721 in 2007, named 2007le.[4]