hip-77645

Variable star

Its story

About 2,160 light years away, in the small but southern Norma, a variable blue B-type star burns with unstable vigour. Its light set out around the year 134 AD, in the heart of the Pax Romana, when the Empire under Hadrian was raising walls from Britain to the Danube frontier. Far hotter and more massive than the Sun, it pulses with subtle changes that betray its young and energetic nature. The celestial carpenter's Square, another of the modern constellations sketched by Lacaille, offers it a quiet corner of the southern Milky Way.

Constellation: Norma
Apparent magnitude: 5.74
Distance: 2160.3 light years
Coordinates (J2000): RA 237.778° · Dec -55.056°
Catalogue: HIP 77645 · HD 141318

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