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Encyclopedia > Messier 100

Spiral Galaxy M100 (also known as Messier Object 100, Messier 100, M100 or NGC 4321) is a spiral galaxy in the Coma Berenices constellation. It was discovered by Pierre Méchain in 1781. M100 is located at 17 Megaparsecs from Earth and has a diameter of 36,800 parsecs. It is one of the brightest members of the Virgo cluster.


Related topics

External link

  • Messier 100, SEDS Messier pages (http://www.seds.org/messier/m/m100.html)

  Results from FactBites:
 
Messier Club Introduction (780 words)
There is a slight touch of irony in the fact that Messier's chief claim to immortality grew out of his efforts to rid himself of a nuisance to what, he felt, was his important life's work.
Since the purpose of the Messier Club is to familiarize the observer with the nature and location of the objects in the sky, the use of an automated telescope which finds the objects without effort on the part of the observer is not acceptable.
Also "Messier marathon" sessions where all the objects are found in one occasion is to be discouraged if the beginning observer depends on other experienced observers to find the object to be observed.
The Messier Catalog : Starshine.com (4931 words)
Messier was interested in finding comets, and this list catalogs objects that proved not to be comets.
Due to Messier recording it at a location 4 degrees away, it was considered "missing" for long time until his descriptions were paired up with the object NGC2548.
Messier discovered M88 in 1781, and described it merely as a "nebula without a star".
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