Pi-5

Variable star

Its story

Pi-5 Orionis forms part of the curved shield Orion raises against the charging celestial bull. More than 1340 light-years away, it is a hot blue B-type giant, an ellipsoidal variable subtly deformed by a companion that orbits in a startlingly tight embrace. Together with its sisters Pi-1 through Pi-6, it traces one of the most recognisable arcs of the northern winter sky.

Constellation: Orion
Apparent magnitude: 3.71
Distance: 1342.4 light years
Coordinates (J2000): RA 73.563° · Dec 2.441°
Catalogue: HIP 22797 · HD 31237

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