- Stars with a name
- Segin
Segin
ε Cassiopeiae
Segin is a very hot blue star, in the constellation Cassiopeia. The light you see from it tonight left it around 1614.
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 3.35.
What it’s like
It gives off 634 times as much light as the Sun.
Its surface temperature is about 12,200 degrees Celsius.
It is 411.8 light years away: 3896 trillion kilometres.