O-type star
An O-type star was a classification of star.

In 2256, the  jumped into the vicinity of an O-type star using the spore drive instead of its intended destination Corvan II. ()

The Idran system was a trinary star system consisting of a central supergiant star (FGC-1215) and twin O-type companions. ()

In 2375, the corona of an O-type star in the Delta Quadrant served to contain the explosion of a Malon export vessel that otherwise would have destroyed everything within three light years. The  directed the vessel into the star with a series of tractor pulses, once it seemed that its away team would not be able to avert the explosion. ()

External link 
 

de:Spektralklasse O
fr:étoile de type O
ja:Oタイプ恒星
Astronomical classifications
Celestial objects