NGC 7721 is a spiral galaxy located around 79 million light-years away in the constellation Aquarius. NGC 7721 was discovered on September 10, 1785, by the astronomer William Herschel, and its diameter is 70,000 light-years across. NGC 7721 is not known to have much star formation, and it is not known to have an active galactic nucleus.
NGC 7721 Group It is part of a galaxy group known as LGG 481. It is a galaxy group formed by 3 galaxies, which is NGC 7721, MCG 1-60-16 and MCG 1-60-26.
Supernova One supernova has been observed in NGC 7721. 2007le (TypeIa, mag. 15.2) was discovered by on 13 October 2007.
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