고메이사

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연주 시차

20.17 mas(밀리각초) → 거리 약 161.7 광년

분광형

B8Vvar

적경

111.7877°

적위

8.2893°

지정명

HR 2845

바이어 이름

β CMi

HIP 번호

36188

IAU 이름 채택일

2016-07-20

이름이 온 말

Arabic

이름 유래(IAU 원문)

From the pre-Islamic Arabian surname al-ghumaisa', "the Little Bleary-eyed One ('with a filthy fluid in the corner of the eye')," for α CMi. Wrongly transferred to β CMi in recent times. The original significance of the surname is unknown. Perhaps as an attempt to explain the significance of al-ghumaisa', as well as that of the surname al-<abur, "the One Having Crossed Over [a river, etc.]," for α CMa, an Arabic fable developed associating these and other equally enigmatic star names. According to one version of the fable, al-ghumaisa and ai-'abur were sisters, and their brother was suhail (α Car). Suhail, in turn, was the suitor of al-jauza' (the feminine pre-Islamic Arabian figure in place of Orion). In coitus, suhail broke the spine of al-jauza', thus killing her, after which suhail fled south. He was followed by his sister al-'abur who "crossed over" the Milky Way (where the two stars now lie in the southern sky). Meanwhile suhail's second sister, al-ghumaisa, was left alone north of the Milky Way, weeping, until her "eyes became bleary." (The pre-Islamic Arabian name for α CMa was al-shi'ra, of unknown meaning. Apparently it was developed into a dualis form, al-shi'rayan, to accomodate both α CMa and α CMi, with the aforementioned "surnames" distinguishing the two.)

출처:IAU Working Group on Star Names · 확인 2026-11-02 ↗ESA Hipparcos Catalogue (ESA Gaia Archive) · 확인 2026-11-03 ↗