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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...

    1997 — Two Micron All Sky Survey commences, first version of Hipparcos Catalogue published; 1998 — Sloan Digital Sky Survey commences; 2003 — 2dF Galaxy Redshift Survey published; 2MASS completes; 2012 — On March 14, 2012, a new atlas and catalog of the entire infrared sky as imaged by Wide-field Infrared Survey Explorer was released. [8]

  4. 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 ]

  5. Principal Galaxies Catalogue - Wikipedia

    en.wikipedia.org/wiki/Principal_Galaxies_Catalogue

    The obscured dwarf galaxy PGC 39058 Hubble image of the elliptical galaxy PGC 6240. [1] The Principal Galaxies Catalogue (PGC) is an astronomical catalog published in 1989 that lists B1950 and J2000 equatorial coordinates and cross-identifications for 73,197 galaxies.

  6. Messier 13 - Wikipedia

    en.wikipedia.org/wiki/Messier_13

    Messier 13 was discovered by Edmond Halley in 1714, [2] and cataloged by Charles Messier on June 1, 1764, [9] into his list of objects not to mistake for comets; Messier's list, including Messier 13, eventually became known as the Messier catalog. [10] It is located at right ascension 16 h 41.7 m, declination +36° 28'. Messier 13 is often ...

  7. Wikipedia:WikiProject Astronomical objects/Catalogues/Messier ...

    en.wikipedia.org/.../Catalogues/Messier_Catalogue

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