Tau-5

Hot blue star

Its story

Tau-5 Eridani is a binary system of two near-twin blue stars, both of class B8 V, burning at temperatures close to 12,000 K. Their combined light reaches Earth from some 293 light-years, crossing the long winding course of the celestial river Eridanus. Two hot sisters orbiting in silence, indistinguishable to the naked eye but revealed as a pair by careful spectroscopy.

Constellation: Eridanus
Apparent magnitude: 4.26
Distance: 293.3 light years
Coordinates (J2000): RA 53.447° · Dec -21.633°
Catalogue: HIP 16611 · HD 22203

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