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Horsehead Nebula

Also known as B033

Horsehead Nebula is a dark nebula in the constellation Orion.

Dark nebula in Orion

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

Facts

TypeDark nebula
ConstellationOrion
Position (J2000)5h 40m 58s, −2° 27′
Size on the sky6′ × 4′ (the full Moon is about 31′)
FilterH-beta filter (One of the few nebulae that show best through an H-beta filter, which passes only the blue-green light of hydrogen.)
Studied in559 scientific papers (SIMBAD)

When and how to see it

Horsehead Nebula is highest in the sky at midnight in December. From India (about 20° N) it climbs to about 68° above the horizon; from 50° N, to about 38°.

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 Orion

Everything in Orion · All 88 constellations · All sky objects

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