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CASSIOPEIA

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Originally appearing in Volume V05, Page 460 of the 1911 Encyclopedia Britannica.
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CASSIOPEIA , in See also:

Greek See also:mythology, the wife of See also:Cepheus, and See also:mother of See also:Andromeda; in See also:astronomy, a See also:constellation of the See also:northern hemisphere, mentioned by See also:Eudoxus (4th See also:century B.C.) and See also:Aratus (3rd century B.c.). See also:Ptolemy catalogued 13 stars in this constellation, Tycho See also:Brahe 46, and See also:Hevelius 37. Its most interesting stars are: Nova Cassiopeiae, a " new " See also:star, which burst out with extraordinary brilliancy in 1572, when it was observed by Tycho Brahe,but gradually diminished in brightness, ultimately vanishing in about eighteen months; a-Cassiopeiae and R-Cassiopeiae are variable stars, the former irregular, the latter having a See also:long See also:period; ri-Cassiopeiae, a binary star, having components of magnitudes 32 and 72; o--Cassiopeiae, a See also:double star, one being See also:white and of magnitude 5, the other See also:blue and of magnitude 71.

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