equatorial skyBest Apr
Hydra
The Water Snakegen. Hydrae
- Brightest
- Alphard
- Stars
- 150
- Best viewed
- April
- Sky center
- 167.5°, -14.0°
Alpha Hydrae
in catalog
from mid-latitudes
RA / Dec
Live 3D view
150 stars
pinch · drag
α · Brightest
Alphard
Mythology
The many-headed Hydra slain by Heracles in his second labor. Largest constellation by area — sprawls across 100° of sky. Alphard — 'the solitary one' — is a lonely bright star in an otherwise faint region.
Brightest stars
top 8 of 150| Star | Bayer | Magnitude | B−V |
|---|---|---|---|
Alphard | 30Alp Hya | 1.99 | 1.44 |
46Gam Hya | — | 2.99 | 0.92 |
16Zet Hya | — | 3.11 | 0.98 |
Nu Hya | — | 3.11 | 1.23 |
49Pi Hya | — | 3.25 | 1.09 |
Ashlesha | 11Eps Hya | 3.38 | 0.69 |
Xi Hya | — | 3.54 | 0.95 |
41Lam Hya | — | 3.61 | 1.01 |
- Alphard30Alp Hya1.99mag
- 46Gam Hya2.99mag
- 16Zet Hya3.11mag
- Nu Hya3.11mag
- 49Pi Hya3.25mag
- Ashlesha11Eps Hya3.38mag
- Xi Hya3.54mag
- 41Lam Hya3.61mag
Lower magnitude = brighter. B−V color index maps to star color (bluer cooler, redder warmer).