- Stars with a name
- Alhena
Alhena
γ Geminorum
Alhena is a white star, in the constellation Gemini. The light you see from it tonight left it around 1917.
Where to find it
From mid-northern latitudes, such as New York, Rome or Tokyo, it is best seen in the evening sky in January, February, March, and December.
Bright enough to see even from a city. Apparent magnitude 1.93.
What it’s like
It gives off 165 times as much light as the Sun.
Its surface is at about 10,100 degrees.
It is 109.3 light years away: 1034 trillion kilometres.