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Delta Cancri (δ Cnc, δ Cancri) is an orange giant star approximately 180 light-years away in the constellation Cancer. It has the traditional name Asellus Australis which in Latin means "southern donkey colt". It also has the longest of all known star names, Arkushanangarushashutu, derived from ancient Babylonian which means "the southeast star in the Crab".〔Allen, Richard Hinckley, ''Star Names: Their Lore and Meaning'', 1898.〕 In Chinese, (), meaning ''Ghost (asterism)'', refers to an asterism consisting of δ Cancri, θ Cancri, η Cancri and γ Cancri.〔 ''中國星座神話'', written by 陳久金. Published by 台灣書房出版有限公司, 2005, ISBN 978-986-7332-25-7.〕 Consequently, δ Cancri itself is known as (, (英語:the Fourth Star of Ghost).)〔 (香港太空館 - 研究資源 - 亮星中英對照表 ), Hong Kong Space Museum. Accessed on line November 23, 2010.〕 Since it is near the ecliptic, it can be occulted by the Moon and very rarely by planets. ==History== Delta Cancri was involved in the first recorded occultation by Jupiter: Delta Cancri also marks the famous open star cluster Praesepe (or the Beehive Cluster, also known as Messier 44). In ancient times M44 was used as a weather gauge as the following Greek rhyme from Aratos' ''Prognostica'' reveals: The meaning of this verse is that if Asellus Borealis or Gamma Cancris〔Kaler, 2009:〕 is hidden by clouds, the wind will be from the south and that situation will be reversed if Asellus Australis is obscured. There is some doubt however as to the accuracy of this as Allen notes: "Our modern Weather Bureau would probably tell us that if one of these stars were thus concealed, the other also would be." (Allen, 1898) 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Delta Cancri」の詳細全文を読む スポンサード リンク
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