Its abbreviation is CMi. It is a small constellation that decorates the winter sky, facing Canis Major across the Milky Way. Alpha Procyon is a star of magnitude 0.4, spectral type F5, and a visible binary system with a period of 41 years. The companion star is a white dwarf with a magnitude of 10.3. Its proper name Procyon means "before the dog" in Greek, and it was so named because it rises above the eastern horizon before the bright star Sirius in Canis Major. Beta Procyon has a magnitude of 3.0, and is given the proper name Gomeiza (the Tearful One) or Murzim (the Preceding One). Source: Heibonsha World Encyclopedia, 2nd Edition Information |
略号はCMi。冬の夜空を飾り,天の川をはさんでおおいぬ座と向かい合う小星座。α星は光度0.4等,スペクトル型F5の星で,周期41年の実視連星系。伴星は光度10.3等で白色矮星(わいせい)である。その固有名プロキオンはギリシア語で犬の前にという意味で,おおいぬ座の輝星シリウスに先だって東の地平線を昇るのでこの名がある。β星は光度3.0等で,ゴメイザ(涙ぐむもの),あるいはムルジム(先行するもの)の固有名がある。
出典 株式会社平凡社世界大百科事典 第2版について 情報 |
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