Sky of Your Day
  1. Stars with a name
  2. Aldulfin

Aldulfin

ε Delphini

Aldulfin is a very hot blue giant, in the constellation Delphinus. The light you see from it tonight left it around 1696.

Where to find it

From mid-northern latitudes, such as New York, Rome or Tokyo, it is best seen in the evening sky in July, August, September, and October.

Visible to the naked eye away from the brightest lights. Apparent magnitude 4.03.

What it’s like

It gives off 218 times as much light as the Sun.

Its surface temperature is about 11,700 degrees Celsius.

It is 330.5 light years away: 3126 trillion kilometres.

Other named stars in Delphinus