1)messier catalog,梅味星云星团表2)New General Catalogue of Nebulae and Clusters of Stars,星云星团新总表3)New General Catalogue of Nebulae and Clusters of Stars (NGC),星团星云新总表4)nebula and star cluster,星云星团5)New General Catalogue of Nebulae and Clusters of Stars,星云星团新总表星号6)Messier catalog (M),梅西耶星表
