Star
Delta Cephei
Delta Cephei is a yellow star 865 light-years away, seen as it was 865 years ago, shining 1 443 times as bright as the Sun.
The prototype Cepheid, pulsing every 5.37 days. A Cepheid's period tells its true brightness, and this star helps calibrate that rule.
See it live
It is on the live 3D map, where it really is.
Key facts
- Distance
- 865 light-years
- Brightness from Earth
- magnitude 4.07
- Spectral type
- G2Ibvar
- Catalogue
- HIP 110991
See it from here
Bright enough to see with your own eyes from a dark place.
How the map draws it
Drawn as a point of light, sized by how bright it looks from where you are — the kind of thing, not this exact one.