Siwarha

English

Etymology

Borrowed from Arabic سِوَارهَا (siwārhā, literally “her bracelet”), so named because Betelgeuse derives from Arabic يَد الجَوْزَاء (yad al-jawzāʔ, literally “hand of Jawzāʾ”); جَوْزَاء f (jawzāʔ, “Jawzāʾ”) is a female figure in Arabian legend.

Pronunciation

  • enPR: sĭwärʹhä, siwärʹhä, IPA(key): /sɪˈwɑːɹhɑː/, /siˈwɑːɹhɑː/

Proper noun

Siwarha

  1. (astronomy) The companion protostar in orbit around Betelgeuse.
    Synonyms: (Bayer designations) α Orionis B, Alpha Orionis B, α Ori B, Alpha Ori B; (unofficial early nickname) Betelbuddy
    • 2025 June–July, Steve B. Howell, David R. Ciardi, Catherine A. Clark, Douglas A. Hope, Colin Littlefield, Elise Furlan, “The Probable Direct-imaging Detection of the Stellar Companion to Betelgeuse”, in Frederic Rasio, Luis C. Ho, Rekha Jain, Maria Womack, editors, The Astrophysical Journal Letters, volume 988, number 2, District of Columbia: American Astronomical Society, published August 2025, →DOI, article L47, page 8/1 of 8:
      The name Betelgeuse means “Hand of the Giant,” with “Elgeuse” being a historical Arabic name of the Orion constellation and a feminine name in old Arabian legend. Given that α Ori B orbits the hand of the giant, we suggest that the companion star be named سوارها (Siwarha), or “Her Bracelet.”

Translations

Further reading

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