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Zubenelgenubi

Also known as α² Lib · HR 5531

Zubenelgenubi is a spectroscopic binary star in the constellation Libra, about 75.8 light-years from Earth.

Zubenelgenubi: a sky-survey photograph of its field
Sky survey view (DSS2 colour, or a backup survey)

Facts

TypeSpectroscopic binary star (spectral type kA2hA5mA4IV-V)
ConstellationLibra
Position (J2000)14h 50m 52s, −16° 02′
Distance75.8 light-years (its light set off about 75.8 years ago)
Brightnessmagnitude 2.75 (smaller is brighter; the faintest stars the eye sees are about 6)
Studied in234 scientific papers (SIMBAD)

When and how to see it

Zubenelgenubi is highest in the sky at midnight in May. From India (about 20° N) it climbs to about 54° above the horizon; from 50° N, to about 24°. To see it you need the naked eye, even from a town.

Heights are worked out for India and for 50° N. Set your location in Settings to see them for where you are.

For tonight's best time from your own town, the darkness and the Moon, open it on the map and see its "Tonight from your location" card.

More in Libra

Everything in Libra · All 88 constellations · All sky objects

Data: SIMBAD (CDS, Strasbourg; the site's weekly copy) · Data sources & credits