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Pi Orionis (π Ori, π Orionis) is a group of fairly widely scattered stars in the constellation Orion that constitute the asterism Orion's Shield or Orion's Bow.〔astrofoto.org, ("Orion: The Hunter" ), Roland B. Roberts〕 They form an exception to the general rule that stars that share the same Bayer designation are close together: π1 is nearly 9° north of π6 (Tau Eridani is an even more noteworthy example of this). * π1 Ori (''7 Orionis'') * π2 Ori (''2 Orionis'') * π3 Ori (''1 Orionis'') * π4 Ori (''3 Orionis'') * π5 Ori (''8 Orionis'', forms a visual double with ''5 Orionis'') * π6 Ori (''10 Orionis'') All of them were member of asterism 參旗 (Shēn Qí), ''Banner of Three Stars'', ''Net'' mansion.〔 (AEEA (Activities of Exhibition and Education in Astronomy) 天文教育資訊網 (Astronomy Education News) 2006 年 7 月 13 日 (2006-07-13) )〕 ==See also== *Orion's Belt *Orion's Sword 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「Pi Orionis」の詳細全文を読む スポンサード リンク
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