- Stars with a name
- Aludra
Aludra
η Canis Majoris
Aludra is a very hot blue supergiant, in the constellation Canis Major. The light you see from it tonight left it around 37.
Where to find it
Bright enough to see even from a city. Apparent magnitude 2.45.
What it’s like
It gives off 33,916 times as much light as the Sun.
Its surface temperature is about 11,000 degrees Celsius.
It is 1,988.8 light years away: 18,815 trillion kilometres.