Eridanus (constellation)

Eridanus (constellation)

Eridanus /ɨˈrɪdənəs/ is a constellation. It is represented as a river; its name is the Ancient Greek name for the Po River. It was one of the 48 constellations listed by the 2nd century astronomer Ptolemy, and it remains one of the 88 modern constellations. It is the sixth largest of the modern constellations.