About HD 18326
HD 18326 is a rare star. It lies about 1,331.2 light-years from Earth, sits in the constellation Cas, shines at apparent magnitude 7.93 and has spectral type O7V.
Its spectrum reads O7V — 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.