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  2. Messier object - Wikipedia

    en.wikipedia.org/wiki/Messier_object

    The Messier catalogue is one of the most famous lists of astronomical objects, and many objects on the list are still referenced by their Messier numbers. [1] The catalogue includes most of the astronomical deep-sky objects that can be easily observed from Earth's Northern Hemisphere ; many Messier objects are popular targets for amateur ...

  3. Timeline of astronomical maps, catalogs, and surveys

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

    1712 — Isaac Newton and Edmond Halley publish a catalog based on data from a Royal Astronomer who left all his data under seal, the official version would not be released for another decade. [7] 1725 — Posthumous publication of John Flamsteed's Historia Coelestis Britannica; 1771 — Charles Messier publishes his first list of nebulae

  4. List of astronomical catalogues - Wikipedia

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

    RBC — Revised Bologna Catalogue (for example: globular cluster RBC EXT8 in Messier 31; the Andromeda Galaxy) RBS — Rosat Bright Survey (bright X-ray sources) RC — Reference Catalogue. RC2 — Reference Catalogue, 2nd edition; RC3 — Reference Catalogue, 3rd edition

  5. Charles Messier - Wikipedia

    en.wikipedia.org/wiki/Charles_Messier

    Charles Messier (French: [ʃaʁl me.sje]; 26 June 1730 – 12 April 1817) was a French astronomer. He published an astronomical catalogue consisting of 110 nebulae and star clusters , which came to be known as the Messier objects , referred to with the letter M and their number between 1 and 110.

  6. Caldwell catalogue - Wikipedia

    en.wikipedia.org/wiki/Caldwell_catalogue

    While the Messier catalogue is used by amateur astronomers as a list of deep-sky objects for observation, Moore noted that Messier's list was not compiled for that purpose and excluded many of the sky's brightest deep-sky objects, [1] such as the Hyades, the Double Cluster (NGC 869 and NGC 884), and the Sculptor Galaxy (NGC 253). The Messier ...

  7. Messier 77 - Wikipedia

    en.wikipedia.org/wiki/Messier_77

    Messier 77 (M77), also known as NGC 1068 or the Squid Galaxy, is a barred spiral galaxy in the constellation Cetus. It is about 47 million light-years (14 Mpc ) away from Earth, and was discovered by Pierre Méchain in 1780, who originally described it as a nebula.

  8. Messier 102 - Wikipedia

    en.wikipedia.org/wiki/Messier_102

    Messier 102 (also known as M102) is a galaxy listed in the Messier Catalogue that cannot be unambiguously identified. Its original discoverer Pierre Méchain retracted his discovery two years after publication and said that it was a duplicate observation of Messier 101 . [ 1 ]

  9. List of NGC objects (6001–7000) - Wikipedia

    en.wikipedia.org/wiki/List_of_NGC_objects_(6001...

    This is a list of NGC objects 6001–7000 from the New General Catalogue (NGC). 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 .

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