Alhena

Alhena (γ Geminorum) is a white subgiant star in the constellation Gemini. With an apparent magnitude of 1.93 it is the 43rd-brightest star in the night sky, and it is about 109 light-years from Earth.

Finder chart showing where Alhena is in the constellation Gemini
Alhena (circled) in Gemini, with the surrounding constellations and bright stars.
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Facts

ConstellationGemini
Designationγ Geminorum (Gamma Geminorum), HR 2421
Apparent magnitude1.93 (43rd brightest)
Spectral typeA0IV
Colorwhite (B−V 0.00)
Distanceabout 109 light-years
Right ascension6 h 37.7 min
Declination+16.40°
Best monthFebruary (at about 9 pm)

Sources: star positions, magnitudes and colors from the Yale Bright Star Catalogue; constellation boundaries and star names from the IAU; areas and distances from Wikidata; stick figures by M. van der Sluys. How the maps are made.

How to find Alhena

Alhena is in Gemini. From 40° N it is highest in the south in February evenings, about 66° above the horizon. From 35° S it reaches about 39° in the north. Nearby bright stars: Betelgeuse (14° away), Procyon (19° away) and Pollux (19° away).

Gemini constellation →

Other named stars in Gemini

PolluxCastorTejatMebsutaPropusAlzirrWasatMekbudaJishui

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