出典:Wikipedia
出典:『Wikipedia』 (2011/07/04 14:22 UTC 版)
NGC 6633 is an open cluster that was, according to the Webb Society Deep-Sky Observer's Handbook, Volume 3 (Open and Globular Star Clusters), p. 3, discovered in 1745-46 by Philippe Loys de Chéseaux. It was independently rediscovered by Caroline Herschel, and been included in her brother's catalog as H VIII.72.