Star
Rasalhague
Rasalhague is a white star 48.6 light-years away, seen as it was 49 years ago, shining 28 times as bright as the Sun.
See it live
It is on the live 3D map, where it really is.
The brightest star in Ophiuchus; its name means 'the head of the serpent collector'. It spins so fast that its equator bulges about 20% wider than its poles.
Key facts
- Distance
- 48.6 light-years
- Brightness from Earth
- magnitude 2.08
- Spectral type
- A5III
- Catalogue
- HIP 86032
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.
Source: HYG Stellar Database v4.4 (CC BY-SA 4.0), Gaia and Hipparcos distances
This page is built from the same records and words as the map's card, and carries no live numbers.