Alpha Persei Cluster

Also known as Mel 20

Alpha Persei Cluster is a deep-sky object in the constellation Perseus.

Open cluster around Mirfak

Open it on the live sky map Plan Night Exploration

Alpha Persei Cluster: a sky-survey photograph of its field — Sky survey view (DSS2 colour, or a backup survey)

Facts

Constellation	Perseus
Position (J2000)	3h 26m 28s, +48° 58′
Brightness	magnitude 1.2 (smaller is brighter; the faintest stars the eye sees are about 6)
Filter	No filter (It shines in starlight of every colour, so a nebula filter would only dim it; a dark sky helps more.)

When and how to see it

Alpha Persei Cluster is highest in the sky at midnight in November. From India (about 20° N) it climbs to about 61° above the horizon; from 50° N, to about 89°. 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 Perseus

Everything in Perseus · All 88 constellations · All sky objects

Data: · Data sources & credits