Kap

Variable star

Its story

Kappa Scorpii marks the stinger of the Scorpion, next to its bright neighbour Shaula. It is a vast blue-white giant —seventeen times the Sun's mass— pulsating every four and a half hours, a Beta Cephei variable whose surface rises and falls in dizzying cycles. Its cold, knife-edged light travelled almost five centuries before reaching our eyes.

Constellation: Scorpius
Apparent magnitude: 2.39
Distance: 483.3 light years
Coordinates (J2000): RA 265.622° · Dec -39.030°
Catalogue: HIP 86670 · HD 160578

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