southern skyBest Dec
Eridanus
The Rivergen. Eridani
- Brightest
- Achernar
- Stars
- 150
- Best viewed
- December
- Sky center
- 60.0°, -29.0°
Alpha Eridani
in catalog
from mid-latitudes
RA / Dec
Live 3D view
150 stars
pinch · drag
α · Brightest
Achernar
Mythology
The great celestial river — the one into which Phaethon fell after losing control of the Sun's chariot. Sixth-largest constellation, winding 60° across the sky. Achernar — 'end of the river' — is one of the flattest stars known, spinning near break-up speed.
Brightest stars
top 8 of 150| Star | Bayer | Magnitude | B−V |
|---|---|---|---|
Achernar | Alp Eri | 0.45 | -0.16 |
Cursa | 67Bet Eri | 2.78 | 0.16 |
Acamar | The1Eri | 2.88 | 0.13 |
Zaurak | 34Gam Eri | 2.97 | 1.59 |
Rana | 23Del Eri | 3.52 | 0.92 |
41Ups4Eri | — | 3.55 | -0.11 |
Phi Eri | — | 3.56 | -0.12 |
Chi Eri | — | 3.69 | 0.84 |
- AchernarAlp Eri0.45mag
- Cursa67Bet Eri2.78mag
- AcamarThe1Eri2.88mag
- Zaurak34Gam Eri2.97mag
- Rana23Del Eri3.52mag
- 41Ups4Eri3.55mag
- Phi Eri3.56mag
- Chi Eri3.69mag
Lower magnitude = brighter. B−V color index maps to star color (bluer cooler, redder warmer).