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St / Stock — Jürgen Stock (open star clusters) (Stock 1 and 2 in, [38] Stock 3 to 23 in, [39] Stock 24 in [40]) Stone — Ormond Stone (double stars) Streicher — (telescopic asterisms) Stromlo — (for example: Stromlo 2 in Monoceros and Canis Major, at IC 2177; the 'Eagle Nebula') StWr — Stock-Wroblewski (planetary nebulae) Sw — Swift ...
The astronomical catalogue is composed mainly of star clusters, nebulae, and galaxies. Other objects in the catalogue can be found in the other subpages of the list of NGC objects . The constellation information in these tables is from The Complete New General Catalogue and Index Catalogue of Nebulae and Star Clusters by J. L. E. Dreyer , [ 1 ...
Open Cluster: 4.9 Crux: 4.2 C95 NGC 6025 Open Cluster: 2.5 Triangulum Australe: 5.1 C96 NGC 2516: Southern Beehive Cluster: Open Cluster: 1.3 Carina: 3.8 C97 NGC 3766: Pearl Cluster: Open Cluster: 5.8 Centaurus: 5.3 C98 NGC 4609 Open Cluster: 4.2 Crux: 6.9 C99 - Coalsack Nebula: Dark Nebula: 0.61 Crux - C100 IC 2944: Lambda Centauri Nebula ...
This is a list of open clusters located in the Milky Way. An open cluster is an association of up to a few thousand stars that all formed from the same giant molecular cloud . There are over 1,000 known open clusters in the Milky Way galaxy, but the actual total may be up to ten times higher. [ 1 ]
NGC 2000.0 (also known as the Complete New General Catalog and Index Catalog of Nebulae and Star Clusters) is a 1988 compilation of the NGC and IC made by Roger W. Sinnott, using the J2000.0 coordinates. [17] [18] It incorporates several corrections and errata made by astronomers over the years. [5]
NGC 884 (also known as χ Persei) is an open cluster located 7640 light years [2] away in the constellation of Perseus. It is the easternmost of the Double Cluster with NGC 869. NGC 869 and 884 are often designated h and χ Persei, respectively. [4] The cluster is about 14 [2] million years old.
The Melotte catalogue is a catalogue of 245 star clusters compiled by British astronomer Philibert Jacques Melotte. It was published in 1915 as A Catalogue of Star Clusters shown on Franklin-Adams Chart Plates. [1] Catalogue objects are denoted by Melotte, e.g. "Melotte 20". Dated prefixes include as Mel + catalogue number, e.g. "Mel 20". [2]
S2, also known as S0–2, is a star in the star cluster close to the supermassive black hole Sagittarius A* (Sgr A*), orbiting it with a period of 16.0518 years, a semi-major axis of about 970 au, and a pericenter distance of 17 light hours (18 Tm or 120 au) – an orbit with a period only about 30% longer than that of Jupiter around the Sun, but coming no closer than about four times the ...