NGC_6821 is a barred spiral galaxy located approximately 12 million light-years away in the constellation Pegasus. It was discovered by the astronomer William Herschel in 1784 and is notable for its bright central bar structure and well-defined spiral arms. This galaxy has a diameter of about 50,000 light-years and is classified as a type SBc galaxy, indicating its spiral nature with a prominent bar. NGC_6821 is also of interest to astronomers due to its active star formation regions and the presence of various nebulae within its structure.