M 55By astrored / November 6, 2023 M54 . . Index . . M56 Messier 55 M 55 (NGC 6809) Globular Cluster in Sagittarius. RA=19 40.0, Dec=-30 58. 6.3 mag, dist=16.6 kly. M55 page; DSSM page Hartmut Frommert ([email protected]) Christine Kronberg ([email protected]) Last Modification: 7 Apr 1998, 22:14 MET