// Constellation
Hydrus
- Latin name
- Hydrus (Hyi)
- Best visibility
- evenings in December
- Fully visible between
- 8° N – 90° S
- Naked-eye stars
- 20
Hydrus is highest in the evening sky (around 9 pm) in December. The whole constellation rises above the horizon between 8° N and 90° S. Its brightest star is β Hyi at magnitude 2.82 — about 24 light-years away.
The brightest stars
| Star | Designation | Magnitude | Distance |
|---|---|---|---|
| — | β Hyi | 2.82 | 24 ly |
| — | α Hyi | 2.86 | 72 ly |
| — | γ Hyi | 3.26 | 214 ly |
| — | δ Hyi | 4.08 | 140 ly |
| — | ε Hyi | 4.12 | 152 ly |
| — | η² Hyi | 4.68 | 219 ly |
More constellations
Star data: HYG database. Constellation borders: IAU.