Acrab B

Bet-2

Hot blue star

Its story

Acrab B is the secondary component of Acrab, a multiple system in the northern claw of Scorpius. She shines blue at 398 light-years, only seconds of arc from her main partner: a resolution only telescopes can split. The name Acrab comes from the Arabic «al-ʿaqrab», 'the scorpion', and the designation B identifies this fainter yet equally hot component.

Constellation: Scorpius
Apparent magnitude: 4.90
Distance: 398.3 light years
Coordinates (J2000): RA 241.361° · Dec -19.802°
Catalogue: HIP 78821 · HD 144218

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