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Cooling Tower Cluster (M29)

Also known as M29 · M 29 · Cooling Tower Cluster · NGC 6913

Cooling Tower Cluster (M29) is an open star cluster in the constellation Cygnus, about 3,830 light-years from Earth.

Cooling Tower Cluster (M29): a sky-survey photograph of its field
Sky survey view (DSS2 colour, or a backup survey)

Facts

TypeOpen star cluster
ConstellationCygnus
Position (J2000)20h 23m 57s, +38° 30′
Distance3,830 light-years (its light set off about 3,830 years ago)
Brightnessmagnitude 6.6 (smaller is brighter; the faintest stars the eye sees are about 6)
Size on the sky12.7′ × 12.7′ (the full Moon is about 31′)
FilterNo filter (It shines in starlight of every colour, so a nebula filter would only dim it; a dark sky helps more.)
Studied in258 scientific papers (SIMBAD)

When and how to see it

Cooling Tower Cluster (M29) is highest in the sky at midnight in July. From India (about 20° N) it climbs to about 71° above the horizon; from 50° N, to about 79°. To see it you need binoculars.

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 Cygnus

Everything in Cygnus · All 88 constellations · All sky objects

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