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Delta Apodis
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Delta Apodis : ウィキペディア英語版
Delta Apodis


Delta Apodis (δ Aps, δ Apodis) is the Bayer designation for a double star in the southern constellation of Apus.
The brighter star, δ¹ Apodis, is a M-type red giant with a mean apparent magnitude of +4.68. It is classified as an irregular variable〔 star and its brightness varies from magnitude +4.66 to +4.87. At an angular separation of 102.9 arcseconds is δ² Apodis, an orange K-type giant with an apparent magnitude of +5.27.
Hipparcos data report the distance to δ¹ Apodis to be approximately 760 light years, while δ² Apodis is found to be around 610 light years from Earth. They may form a common proper motion pair.
==Naming==
In Chinese caused by adaptation of the European southern hemisphere constellations into the Chinese system, (), meaning ''Exotic Bird'', refers to an asterism consisting of δ1 Apodis, ζ Apodis, ι Apodis, β Apodis, γ Apodis, δ Octantis, η Apodis, α Apodis and ε Apodis. Consequently, δ1 Apodis itself is known as (, (英語:the Sixth Star of Exotic Bird).)〔 (AEEA (Activities of Exhibition and Education in Astronomy) 天文教育資訊網 2006 年 7 月 29 日 )〕

抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)
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