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Algenib

Also known as γ Peg · HR 39

Algenib is a beta cep variable star in the constellation Pegasus, about 470 light-years from Earth.

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

Facts

TypeBeta cep variable star (spectral type B2IV)
ConstellationPegasus
Position (J2000)0h 13m 14s, +15° 11′
Distance470 light-years (its light set off about 470 years ago)
Brightnessmagnitude 2.84 (smaller is brighter; the faintest stars the eye sees are about 6)
Studied in722 scientific papers (SIMBAD)

When and how to see it

Algenib is highest in the sky at midnight in September. From India (about 20° N) it climbs to about 85° above the horizon; from 50° N, to about 55°. 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 Pegasus

Everything in Pegasus · All 88 constellations · All sky objects

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