- 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 temperature is about 9,800 degrees Celsius.
It is 109.3 light years away: 1034 trillion kilometres.