About Mahasim
Mahasim is a rare variable star. It lies about 165.6 light-years from Earth, sits in the constellation Aur, shines at apparent magnitude 2.65 and has spectral type A0p Si.
Its spectrum reads A0p Si — an A-type star: white-hot, typically about twice the Sun's mass, and the class most of the sky's famous bright stars belong to.