hip-17027

Its story

21 Eridani is an orange K-type star only 110 light-years away, among the nearest in its Flamsteed listing within the long river winding from Orion southward. Cooler than the Sun, its light left around 1916, in the depths of the First World War. Eridanus is an enormously extended constellation; this star sits in its northernmost reach, the easiest stretch to follow from European latitudes.