Concept

Eta Canis Majoris

Summary
Eta Canis Majoris (η Canis Majoris, abbreviated Eta CMa, η CMa), also named Aludra ə'luːdrə,_ə'ljuːdrə, is a star in the constellation of Canis Major. Since 1943, the spectrum of this star has served as one of the stable anchor points by which other stars are classified. Nomenclature η Canis Majoris (Latinised to Eta Canis Majoris) is the star's Bayer designation. The traditional name Aludra originates from the Arabic: العذراء al-adhraa, 'the virgin'. This star, along with Epsilon Canis Majoris (Adhara), Delta Canis Majoris (Wezen) and Omicron2 Canis Majoris (Thanih al Adzari), were Al 'Adhārā (العذاري), 'the Virgins'. In 2016, the International Astronomical Union organized a Working Group on Star Names (WGSN) to catalog and standardize proper names for stars. The WGSN's first bulletin of July 2016 included a table of the first two batches of names approved by the WGSN; which included Aludra fo
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