Eridanus (The River)

Immense constellation pouring from Orion's foot to the southern deeps.

Core Principles & Analysis

• It is the fifth-largest constellation, a river of faint stars stretching more than 60 degrees.
• It ends at Achernar, one of the ten brightest stars, which spins so fast it is the flattest star known.
• The river's source is traditionally Cursa, near Orion's foot, and its mouth falls toward the south celestial pole region.

Specifications & Metrics

• BRIGHTEST STAR: Achernar (α Eri)
• HEMISPHERE: Equatorial
• BEST VIEWED: December