Constellation

There are two ways to think of constellations. First, and foremost, a constellation is a grouping of stars that usually represent some mythological being. In the first chart Orion appears as a stick figure torso with a belt of three stars and holding what is depicted as a raised club and perhaps a dead lion. The interconnecting lines  aid in identifying the spatial relationships between the constellation’s stars by guiding our eye from one star to the next. Secondarily, a constellation is an area of the sky, which is delineated in the second chart by the white field. If the Sun, Moon, a planet, or some other celestial object happens to appear within a constellation’s borders, it is said to be located in that constellation.

orion
Orion. yuzukiyuki93.blogspot.com. Accessed by Jim Johnson on January 7, 2015.
IAU and Sky & Telescope magazine (Roger Sinnott and Rick Fienberg), June 5, 2011.
IAU and Sky & Telescope magazine (Roger Sinnott and Rick Fienberg), June 5, 2011.

 

© James R. Johnson, 2015.

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