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Constellation · Ori

Orion

The Hunter

One of the easiest constellations to recognise: three belt stars between Betelgeuse and Rigel. The Orion Nebula (M42), a stellar nursery, hangs below the belt.

Equatorial skyGenitive: Orionis
Find Orion in the sky map
Star chart of Orion: its brightest stars joined by the traditional constellation figure inside the IAU boundary, north up and east to the left
Chart drawn from the Hipparcos catalogue (stars to magnitude 6). North is up, east is left. The dashed line is the official IAU boundary.
Brightest star
Rigel (Beta Orionis)

Magnitude 0.18

Best seen
January

Highest in the sky at 9 pm local time (winter in the northern hemisphere)

Whole constellation visible from
67°S to 79°N

Latitudes where every part of it rises above the horizon at some time of year

Approximate area
590 sq. degrees

The whole sky covers about 41,253 square degrees

Origin
One of Ptolemy's 48 ancient constellations (2nd century)
Catalogue stars
129

Stars brighter than about magnitude 6, the naked-eye limit under dark skies

Named stars in Orion

Brightest first. A lower magnitude means a brighter star.

  • Rigel (Beta Orionis)mag 0.18
  • Betelgeuse (Alpha Orionis)mag 0.45
  • Bellatrix (Gamma Orionis)mag 1.64
  • Alnilam (Epsilon Orionis)mag 1.69
  • Alnitak (Zeta Orionis)mag 1.74
  • Saiph (Kappa Orionis)mag 2.07

Can you see Orion from where you live?

This depends only on your latitude. Pick the row nearest to you; for your exact sky tonight, use the sky map.

LatitudeOrion
60°NThe whole constellation rises and sets
40°NThe whole constellation rises and sets
20°NThe whole constellation rises and sets
the equatorThe whole constellation rises and sets
20°SThe whole constellation rises and sets
40°SThe whole constellation rises and sets
60°SThe whole constellation rises and sets

Questions about Orion

When is Orion best seen?

Orion stands highest in the sky at 9 pm local time in January. That makes winter evenings the best time for observers in the northern hemisphere; in the southern hemisphere the season is reversed.

What is the brightest star in Orion?

The brightest star in Orion is Rigel (Beta Orionis), magnitude 0.18.

Where on Earth can you see Orion?

The whole of Orion can be seen from latitudes between about 67°S and 79°N. From 40°N: The whole constellation rises and sets. From 35°S: The whole constellation rises and sets.

What does Orion mean?

Orion is Latin for "the Hunter". One of Ptolemy's 48 ancient constellations (2nd century).