Gamma Geminorum


Distance (Light Years) 105 ± 8
Apparent Magnitude 1.93
Color (B-V)0

Names For This Star

Alhena derives from the Arabic term Al Han'ah. The Arabic term apparently means a brand or mark on the right side of the neck of a horse or camel. According to Allen, one Arab author has defined the term as "Winding", since the stars in this area of the sky appear to be winding around each other or curving outwards from the central star.

Description of the Star

Alhena is a white A0IVsubgiant about 5 times larger than the sun in diameter about 150 times as luminous.

Other Designations For This Star


24 Geminorum

Hipparcos Identifier (HIP Number)


Harvard Revised (HR Number)


Henry Draper Catalog (HD Number)


Bonner Durchmusterung (BD Number)

BD+16 1223
Smithsonian Astrophysical
Observatory compendium (SAO Number)

Fundamental Katalog (FK5 Number)



Copyright © 1998 - 2010 by Arnold V. Lesikar,
Professor Emeritus
Dept. of Physics, Astronomy, and Engineering Science,
St. Cloud State University,St. Cloud, MN 56301-4498

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