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Table of all 110 Messier objects. Click on the picture for a larger version.
Table of all 110 Messier objects. Click on the picture for a larger version.

The Messier objects are a set of astronomical objects first listed by French astronomer Charles Messier in his "Catalogue des Nébuleuses et des Amas d'Étoiles" ("Catalogue of Nebulae and Star Clusters") included in the Connaissance des Temps for 1774 (published in 1771). s are significant physical entities, associations or structures which current Science has confirmed to exist in Space. This article is about the country For a topic outline on this subject see List of basic France topics. Astronomy (from the Greek words astron (ἄστρον "star" and nomos (νόμος "law" is the scientific study Charles Messier ( June 26, 1730 &ndash April 12, 1817) was a French astronomer most notable for publishing an Year 1774 ( MDCCLXXIV) was a Common year starting on Saturday (link will display the full calendar of the Gregorian calendar (or a Year 1771 ( MDCCLXXI) was a Common year starting on Tuesday (link will display the full calendar of the Gregorian calendar (or a The original motivation of the catalogue was that Messier was a comet hunter, and was frustrated by objects which resembled but were not comets. A comet is a small Solar System body that orbits the Sun and when close enough to the Sun exhibits a visible coma (atmosphere or a tail — He therefore compiled a list of these objects. The Messier objects are a set of astronomical objects catalogued by Charles Messier in his "Catalogue des Nébuleuses et des Amas d'Étoiles" ("Catalogue of Nebulae [1]

The first edition covered 45 objects numbered M1 to M45. The Crab Nebula  (catalogue designations M 1 NGC 1952 Taurus A is a Supernova remnant and Pulsar wind nebula in the Constellation The Pleiades (ˈpliːədiːz or /ˈplaɪədiːz/ also known as M 45, the '''Seven Sisters''', Seven Stars, SED, Matariki The total list consists of 110 objects, ranging from M1 to M110. Messier 110 (also known as M110 and NGC 205) is a Dwarf elliptical galaxy that is a satellite of the Andromeda Galaxy. M102 cannot be positively identified; likely candidates are the galaxies M101 and NGC 5866. Messier 102 (also known as M102) is a Galaxy listed in the Messier Catalogue that cannot be identified unambiguously NGC 5866 (also called the Spindle Galaxy) is a relatively bright Lenticular galaxy in the Constellation Draco.

Messier's final catalogue was included in the Connaissance des Temps for 1784 (published in 1781). Year 1784 ( MDCCLXXXIV) was a Leap year starting on Thursday (link will display the full calendar of the Gregorian calendar (or a Leap year Year 1781 ( MDCCLXXXI) was a Common year starting on Monday (link will display the full calendar of the Gregorian calendar (or a Common Many of these objects are still known by their Messier number. [2]

Because Messier lived and did his astronomical work in France in the Northern Hemisphere, the list he compiled contains only objects from the north celestial pole to a celestial latitude of about –35°. The north and south celestial poles are the two imaginary points in the sky where the Earth's Axis of rotation, "infinitely extended" intersects the Many impressive Southern objects, such as the Large and Small Magellanic Clouds are excluded from the list. History The Magellanic Clouds were certainly known since the earliest times by the ancient Middle Eastern peoples Because all of the Messier objects are visible with binoculars or small telescopes (under favorable conditions), they are popular viewing objects for amateur astronomers. In early spring, astronomers sometimes gather for "Messier marathons", when all of the objects can be viewed over a single night. A Messier marathon is an attempt usually organized by Amateur Astronomers to find as many Messier objects as possible during one night [3]

See also

References

  1. ^ SEDS Messier Database. The Messier objects are a set of astronomical objects catalogued by Charles Messier in his "Catalogue des Nébuleuses et des Amas d'Étoiles" ("Catalogue of Nebulae A Messier marathon is an attempt usually organized by Amateur Astronomers to find as many Messier objects as possible during one night Deep sky or Deep Sky Object (DSO for short which differs from Deep space, is a term used by amateur astronomers to describe mostly faint Astronomical objects outside The New General Catalogue ( NGC) is the best-known catalogue of Deep sky objects in Amateur astronomy. The Herschel 400 catalogue is a subset of William Herschel's original Deep sky catalogue of 2500 deep sky objects selected by Brenda F The Caldwell Catalogue is an Astronomical catalog of 109 bright Star clusters Nebulae and Galaxies THE MESSIER CATALOG. Retrieved on 2007-11-10. Year 2007 ( MMVII) was a Common year starting on Monday of the Gregorian calendar in the 21st century. Events 1444 - Battle of Varna: The crusading forces of King Vladislaus III of Varna (aka Ulaszlo I of Hungary and Wladyslaw
  2. ^ Original Messier Catalog of 1781. Original Messier Catalog of 1781. Retrieved on 2007-11-10. Year 2007 ( MMVII) was a Common year starting on Monday of the Gregorian calendar in the 21st century. Events 1444 - Battle of Varna: The crusading forces of King Vladislaus III of Varna (aka Ulaszlo I of Hungary and Wladyslaw
  3. ^ The Messier Marathon. THE MESSIER MARATHON. Retrieved on 2007-11-10. Year 2007 ( MMVII) was a Common year starting on Monday of the Gregorian calendar in the 21st century. Events 1444 - Battle of Varna: The crusading forces of King Vladislaus III of Varna (aka Ulaszlo I of Hungary and Wladyslaw

External links

Dictionary

Messier object

-noun

  1. (astronomy) any of the nebulae, star clusters, or deep sky objects listed in the Messier catalogue
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