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A faint constellation of the far north introduced in 1743 on a star chart published by the Frenchman Pierre-Charles Le Monnier in his book La Théorie des Comètes. The chart showed the track of the comet of 1742 through the north polar region of the sky, and Le Monnier was inspired to place a new constellation representing a reindeer on the comet’s course, close to the north celestial pole between Cepheus and Camelopardalis. The reindeer was a reminder of Le Monnier’s trip to Lapland in 1736–37 with the expedition of Pierre Louis de Maupertuis to measure the length of a degree of latitude in the far north.

The same chart was republished in 1746 in Le Monnier’s book Institutions astronomiques but with no further explanation of the new constellation that appeared on it. Le Monnier seems never to have published a list of its stars, but Bode in his catalogue Allgemeine Beschreibung und Nachweisung der Gestirne of 1801 assigned it 46 stars of 5th to 7th magnitude plus one deep-sky object, the galaxy NGC 1184. Most of these are now within the borders of northern Cepheus.

On Le Monnier’s chart the constellation was named “le Réene”, a spelling that was adopted by his fellow Frenchman Jean Fortin in his Atlas Céleste of 1776; however, the name should more accurately have been “le Renne”, and Fortin changed it on his revised edition of 1795. Bode Latinized it as Rangifer. It has also been known by the name Tarandus, from the reindeer’s scientific name, Rangifer tarandus.

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Rangifer seen in the Uranographia of Johann Bode (1801).



© Ian Ridpath. All rights reserved


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