- Stars with a name
- Alfirk
Alfirk
β Cephei
Alfirk is a very hot blue giant, in the constellation Cepheus. The light you see from it tonight left it around 1341.
Where to find it
From mid-northern latitudes, such as New York, Rome or Tokyo, it never sets: it circles the pole all night, all year.
Visible to the naked eye away from the brightest lights. Apparent magnitude 3.23.
What it’s like
It gives off 1,962 times as much light as the Sun.
Its surface temperature is about 13,300 degrees Celsius.
It is 685.2 light years away: 6482 trillion kilometres.