en Omicron Orionis

Omicron Orionis refers to two distinct star systems in the constellation Orion:

ο¹ Orionis (4 Orionis), an M3S semiregular variable star
ο² Orionis (9 Orionis), a K2 giant star

All of them were member of asterism 參旗 (Sān Qí), Banner of Three Stars, Net mansion.^[1]

References

^ (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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[1] (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)

[1]

Omicron Orionis

See also

References