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Mintaka

Mintaka or Delta Orionis is the right belt star of Orion. The blue star has a dimmer, but bigger companion (Mintaka B) as well as two other inconsiderable partners.
Mintaka is placed near the sky's equator.

Constellation: Orion
Age: circa 3 million years
Distance: 916 light-years
Orbit period of Mintaka A and B: 5.73 days
Radial velocity: 16 km/sec

Mintaka A

Spectral class: O9.5
Visual magnitude: 2.5
Luminosity: 70 000 * Sun
Mass: > 20 * Sun
 

Mintaka B

Spectral class: B4
Visual magnitude: 6.8

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    Mintaka
Mintaka is at the upper left
Photo: Digitized Sky Survey, ESA/ESO/NASA FITS Liberator

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