M 57By astrored / November 6, 2023 M56 . . Index . . M58 Messier 57 M 57 (NGC 6720) Planetary Nebula in Lyra. Ring Nebula RA=18 53.6, Dec=+33 02. 8.8 mag, dist=4.1 kly. M57 page; DSSM page Hartmut Frommert ([email protected]) Christine Kronberg ([email protected]) Last Modification: 7 Apr 1998, 22:15 MET