Star profile

Gamma 1 Delphinus

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

What is Gamma 1 Delphinus

Gamma-1 Delphini is one of the four stars that draw Job's Coffin, the small lozenge shaping the body of the Dolphin in the summer sky. With its companion Gamma-2 it forms a visual binary described as one of the prettiest in the sky: two suns of contrasting hues — orange and lime green to the eye — circling each other in a period of about 3,250 years, with separations ranging from 40 to 600 astronomical units.

Where it is and when to see it

Gamma 1 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: the Sun sits at the opposite point of the sky and the star culminates around midnight. How high it climbs above the horizon depends on the latitude you watch from.

Find it on the sky map

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The signature wall

Stelvia's sky works like a signature wall: anyone can leave their name and a message on a real star, and that signature goes up on the map for everyone to read. Signing is free.

A signature without a lock can be replaced by someone else's. The lock makes the signature permanent and lets you choose a symbolic name for the star, always shown next to the star's catalogue identifier. How the lock works

If you don't have an account yet, we'll ask for an email to confirm it's you: we send you a link and that's it, no password.

Write my signature

A public signature from a real person. The chosen name is a symbolic denomination within Stelvia, with no official standing or IAU recognition: the sky is not for sale and belongs to no one.

Astronomical data for Gamma 1 Delphinus

Constellation: Delphinus
Apparent magnitude: 5.15
Distance: 123.8 light years
Coordinates (J2000): RA 311.662° · Dec 16.124°
Catalogue: HIP 102531 · HD 197963

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