Ome

Variable star

Its story

ω Orionis lies just north of Orion's Belt, about 1,380 light-years away. It is a Be star: a blue B3 spinning at dizzying speed —close to 450 km/s at the equator— flinging material into a gaseous disc around itself. That mass loss makes its brightness flicker, marking it as a γ Cassiopeiae variable, caught between rotation and its own instability.

Constellation: Orion
Apparent magnitude: 4.50
Distance: 1382.2 light years
Coordinates (J2000): RA 84.796° · Dec 4.121°
Catalogue: HIP 26594 · HD 37490

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