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The New General Catalogue of Nebulae and Clusters of Stars (abbreviated NGC) is an astronomical catalogue of deep-sky objects compiled by John Louis Emil Dreyer in 1888. The NGC contains 7,840 objects, including galaxies , star clusters and emission nebulae .
The number of galaxies belonging to the cluster, out to (at least) the virial radius. parent The parent structure (e.g. parent galaxy cluster, parent supercluster...) richness Abell (or related) richness class. Based on number of members within a magnitude range of m 3 to m 3 +2, where m 3 is the magnitude of the third brightest member of the ...
NGC 288 is a globular cluster in the constellation Sculptor.Its visual appearance was described by John Dreyer in 1888. [7] It is located about 1.8° southeast of the galaxy NGC 253, 37′ north-northeast of the South Galactic Pole, 15′ south-southeast of a 9th magnitude star, and encompassed by a half-circular chain of stars that opens on its southwest side. [1]
The second most massive galaxy cluster next to El Gordo is RCS2 J2327, a galaxy cluster with the mass of 2 quadrillion suns. Also has a systematic designation of ACT-CL J0102-4915. [6] [7] [8] Musket Ball Cluster: Named in comparison to the Bullet Cluster, as this one is older and slower galaxy cluster merger than the Bullet Cluster.
Map showing the location of NGC 6067. NGC 6067 is an open cluster in the constellation Norma. It is located to the north of Kappa Normae, with an angular diameter of 12 ′. Visible to the naked eye in dark skies, [4] [5] it is best observed with binoculars or a small telescope, and a 12-inch aperture telescope will reveal about 250 stars.