NGC 6620 (also ESO 522-PN22 and PK 5-6.1) is a magnitude +12.7 planetary nebula located in the constellation Sagittarius.
The planetary nebula was discovered by American astronomer Edward Charles Pickering using a 38.1 cm (15 inch) refractor at the Harvard College Observatory on the 3rd September 1880.
Right Ascension 18h 22m 54.2s, Declination -26° 49' 16"
