About Mintaka
Mintaka is an anomaly variable star. It lies about 692.5 light-years from Earth, sits in the constellation Ori, shines at apparent magnitude 2.25 and has spectral type O9.5II.
Its spectrum reads O9.5II — an O-type star — the hottest, rarest main class there is. Fewer than one star in a million is an O, and none of them lasts long.