Pi Orionis

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.[1]

The location of Pi5 Orionis (π5) in the constellation of Orion (shown as a red circle with a red center).

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).

All of them were member of asterism 參旗 (Shēn Qí), Banner of Three Stars, Net mansion.[2]

See also

References
  1. astrofoto.org, "Orion: The Hunter" Archived 2013-06-10 at the Wayback Machine, Roland B. Roberts
  2. (in Chinese) 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)
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