Celestial hemisphere:  Northern  ·  Constellation: Orion (Ori)  ·  Contains:  19 Ori)  ·  24 Ori)  ·  28 Ori)  ·  34 Ori)  ·  44 Ori)  ·  46 Ori)  ·  50 Ori)  ·  53 Ori)  ·  58 Ori)  ·  67 Eri)  ·  Al Mankib  ·  Algebar (β Ori  ·  Betelgeux (α Ori  ·  Dhalim (β Eri  ·  Flame Nebula  ·  Great Orion Nebula  ·  IC 434  ·  M 42  ·  NGC 1909  ·  NGC 1976  ·  NGC 2024  ·  Orion B  ·  Orion Nebula  ·  Part of the constellation Eridanus (Eri)  ·  Part of the constellation Lepus (Lep)  ·  Part of the constellation Orion (Ori)  ·  The star Alnilam (ε Ori  ·  The star Alnitak (ζ Ori  ·  The star Bellatrix (γ Ori  ·  The star Betelgeuse  ·  And 7 more.
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The Orion Constellation, Alessandro Cavallaro
The Orion Constellation
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The Orion Constellation

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The Orion Constellation, Alessandro Cavallaro
The Orion Constellation
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The Orion Constellation

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Description

Orion is a prominent set of stars visible during winter in the northern celestial hemisphere. It is one of the 88 modern constellations; it was among the 48 constellations listed by the 2nd-century astronomer Ptolemy. It is named for a hunter in Greek mythology.Orion is most prominent during winter evenings in the Northern Hemisphere, as are five other constellations that have stars in the Winter Hexagon asterism. Orion's two brightest stars, Rigel (β) and Betelgeuse (α), are both among the brightest stars in the night sky; both are supergiants and slightly variable. There are a further six stars brighter than magnitude 3.0, including three making the short straight line of the Orion's Belt asterism. Orion also hosts the Orionids, the strongest meteor shower associated with Halley's Comet, and the Orion Nebula, one of the brightest nebulae in the sky.

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The Orion Constellation, Alessandro Cavallaro