- Stars with a name
- Achird
Achird
η Cassiopeiae
Achird is a yellow star like the Sun, in the constellation Cassiopeia. The light you see from it tonight left it around 2007.
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 3.46.
What it’s like
It gives off about as much light as the Sun.
Its surface is at about 6,000 degrees.
It is 19.4 light years away: 184 trillion kilometres.
It is the star of people born around 2007: the light that left it then is reaching Earth now.