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  2. List of astronomical catalogues - Wikipedia

    en.wikipedia.org/wiki/List_of_astronomical...

    RMM — (for example: open star cluster RMM 1 at 12:12:20 / -63°15'31") RNGC — Revised New General Catalogue; Ro — Curt Roslund (open star clusters) Roberts — (protoplanetary nebulae) Roe — Edward Drake Roe, 1859–1929 (double stars) Roman-Lopes — (open star clusters, I.R.) Ross — Ross Catalogue of New Proper Motion Stars (Frank ...

  3. Melotte catalogue - Wikipedia

    en.wikipedia.org/wiki/Melotte_catalogue

    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]

  4. Timeline of astronomical maps, catalogs, and surveys

    en.wikipedia.org/wiki/Timeline_of_astronomical...

    2020 — On July 19, 2020, after a 20-year-long survey, astrophysicists of the Sloan Digital Sky Survey published the largest, most detailed 3D map of the universe so far, fill a gap of 11 billion years in its expansion history, and provide data which supports the theory of a flat geometry of the universe and confirms that different regions ...

  5. New General Catalogue - Wikipedia

    en.wikipedia.org/wiki/New_General_Catalogue

    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]

  6. Westerlund 1-20 - Wikipedia

    en.wikipedia.org/wiki/Westerlund_1-20

    Westerlund 1-20 (abbreviated to Wd 1-20 or just W20) is a red supergiant (RSG) located in the Westerlund 1 super star cluster. Its radius was calculated to be around 965 solar radii [1] (6.72 × 10 8 km, 4.48 au), making it one of the largest stars discovered so far. This corresponds to a volume 899 million times bigger than the Sun.

  7. NGC 2129 - Wikipedia

    en.wikipedia.org/wiki/NGC_2129

    NGC 2129 is an open cluster in the constellation Gemini. It has an angular distance of 2.5 arcminutes and is approximately 2.2 ± 0.2 kpc (~7,200 light years) from the Sun inside the Local spiral arm. [3] At that distance, the angular size of the cluster corresponds to a diameter of about 10.4 light years.

  8. NGC 3324 - Wikipedia

    en.wikipedia.org/wiki/NGC_3324

    NGC 3324 is an open cluster in the southern constellation Carina, located northwest of the Carina Nebula (NGC 3372) [3] [4] at a distance of 9,100 ly (2,800 pc) from Earth. [2] It is closely associated with the emission nebula IC 2599 , also known as Gum 31 . [ 5 ]

  9. NGC 6208 - Wikipedia

    en.wikipedia.org/wiki/NGC_6208

    NGC 6208 is an open cluster in the southern constellation of Ara. With an age of 1.17 Gigayears, it is one of the oldest known open clusters. With an age of 1.17 Gigayears, it is one of the oldest known open clusters.

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