Abbreviation: Lus. A small constellation in the southern sky. The eastern part of the broad constellation Centaurus was made into an independent constellation by Ptolemy at the end of the Greek era. Alpha is magnitude 2.9, spectral type B2, and 820 light years away. Beta is magnitude 2.8, spectral type B3, and 270 light years away. Gamma is a double star of magnitude 3.6 and 3.7, but they are only 0.1" apart. There are many double stars and star clusters, but they are all dark. Its approximate position is right ascension 15h0m, declination -40°, and it reaches its culmination at 8pm in the early July. [Ishida Goro] Source: Heibonsha World Encyclopedia, 2nd Edition Information |
略号Lus。南天の小星座。広いケンタウルス座の東寄りの部分が,ギリシア時代末期プトレマイオスの手で独立した星座になった。α星は2.9等,スペクトル型はB2,距離820光年,β星は2.8等,スペクトル型はB3,距離270光年,γ星は3.6等と3.7等の二重星だが0.″1しか離れていない。二重星,星団が多いがどれも暗い。概略位置は赤経15h0m,赤緯-40゜,午後8時の南中は7月上旬。【石田 五郎】
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