Gamma Geminorum

Also known as Alhena, 24 Geminorum, 24 Gem, γ Geminorum, γ Gem, HD 47105, HIP 31681, HIC 31681

star in the constellation Gemini

Key facts

Constellation: Gemini
Right ascension: 06 37 42.71050
Declination: +16 ° 23 ′ 57.4095 ″
Evolutionary stage: subgiant
Spectral type: A1IV + G
U b color index: +0.137
B v color index: +0.005

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Wikidata facts

Image: Gemini constellation map.png

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Article

Gamma Geminorum (γ Geminorum, abbreviated Gamma Gem, γ Gem), formally named Alhena /ælˈhiːnə/, is the third-brightest object in the constellation of Gemini. It has an apparent visual magnitude of 1.9, making it easily visible to the naked eye even in urban regions. Based upon parallax measurements with the Hipparcos satellite, it is located at a distance of roughly 109 light-years (33 parsecs).

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