Star profile

Eta Delphinus

3D likeness based on its real data · class A · ~8,500 K

What is Eta Delphinus

Eta Delphini shines some 236 light-years away in the small but beloved constellation of the Dolphin, that crisp diamond that seems to leap out of the Milky Way. It is a white A-type star, part of an asterism so compact that any dark sky reveals it at a glance. It accompanies the four stars that draw the body of the mythological cetacean, a reminder that the most cherished constellations are not always the largest.

Where it is and when to see it

Eta Delphinus lies in the northern celestial hemisphere. It is visible to the naked eye under a dark sky. Its best month of the year is August, when it culminates around midnight.

From London it culminates about 52° above the horizon.
From New York it culminates about 62° above the horizon.
From Sydney it culminates about 43° above the horizon.

It can be seen from anywhere north of 77° S.

It ranks no. 10 in brightness among the 18 stars of Delphinus in our catalogue. To find it, start from Rotanev, the brightest: it lies about 2° away (a fist at arm's length covers about 10°).

The light you see today left it about 240 years ago.

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Astronomical data for Eta Delphinus

Constellation: Delphinus
Apparent magnitude: 5.39
Distance: 236.2 light years
Coordinates (J2000): RA 308.488° · Dec 13.027°
Catalogue: HIP 101483 · HD 195943

A symbolic commemorative gift: neither the signature nor the chosen name implies ownership of the star or recognition by the IAU.

Other stars in Delphinus

Delphinus has 18 stars in Stelvia's catalogue. Here are a few of them.

See all 18 stars in Delphinus