Star profile

Omicron 2 Orionis

3D likeness based on its real data · class K · ~4,200 K

What is Omicron 2 Orionis

Omicron-2 Orionis stands beside its near-twin Omicron-1 at the edge of the celestial hunter, outside the famous quadrilateral. At 186 light-years, it is an orange K-type giant that has left the main sequence and now climbs the giant branch. Its warm hue contrasts with the dominant blue of Orion, a reminder that even among young stars, slow-burning veterans drift through.

Where it is and when to see it

Omicron 2 Orionis lies in the northern celestial hemisphere. It is visible to the naked eye under a dark sky. Its best month of the year is December, when it culminates around midnight.

From London it culminates about 52° above the horizon.
From New York it culminates about 63° above the horizon.
From Sydney it culminates about 43° above the horizon.

It can be seen from anywhere north of 76° S.

It ranks no. 16 in brightness among the 128 stars of Orion in our catalogue. To find it, start from Rigel, the brightest: it lies about 22° away (a fist at arm's length covers about 10°).

The light you see today left it about 190 years ago.

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Astronomical data for Omicron 2 Orionis

Constellation: Orion
Apparent magnitude: 4.06
Distance: 186.0 light years
Coordinates (J2000): RA 74.093° · Dec 13.514°
Catalogue: HIP 22957 · HD 31421

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Other stars in Orion

Orion has 128 stars in Stelvia's catalogue. Here are a few of them.

See all 128 stars in Orion