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U Andromedae : ウィキペディア英語版 | U Andromedae
U Andromedae is a variable star in the constellation of Andromeda. It is classified as a Mira variable, and varies from an apparent visual magnitude of 8.9 at maximum brightness to a magnitude of 15.0 at minimum brightness, with a period of approximately 347 days.〔(U And ), database entry, Combined General Catalog of Variable Stars (GCVS4.2, 2004 Ed.), N. N. Samus, O. V. Durlevich, et al., CDS ID (II/250 ).〕 It was first observed to be variable by Thomas D. Anderson during 1894 and 1895.〔New variable star in Andromeda, T. D. Anderson, ''Astronomische Nachrichten'' 139 (1896), p. 117–118, .〕〔Third catalogue of variable stars, S. C. Chandler, ''Astronomical Journal'' 16, #19 (issue #379, July 8, 1896), pp. 145–172, , .〕 ==References==
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