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Altais

Also known as δ Dra · HR 7310

Altais is a high proper motion star in the constellation Draco, about 100 light-years from Earth.

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

Facts

TypeHigh proper motion star (spectral type G9III)
ConstellationDraco
Position (J2000)19h 12m 33s, +67° 39′
Distance100 light-years (its light set off about 100 years ago)
Brightnessmagnitude 3.07 (smaller is brighter; the faintest stars the eye sees are about 6)
Studied in299 scientific papers (SIMBAD)

When and how to see it

Altais is highest in the sky at midnight in July. From India (about 20° N) it climbs to about 42° above the horizon; from 50° N, to about 72°. 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 Draco

Everything in Draco · All 88 constellations · All sky objects

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