MASCARA-1 is a star with 1.72 times the mass of the Sun, and 2.1 times its radius. It is located 594.49 light years away from the solar system and is estimated to be 1 billion years old, as compared to the Sun which is roughly 4.6 billion years old.
MASCARA-1 is known to have 1 exoplanets in orbit around it.
MASCARA-1 b was discovered by the Multiple Observatories observatory, in 2017-10, using the transit method. Its semi-major axis is 0.04 astronomical units, as compared to Earth's which is 1 astronomical unit. The mass of MASCARA-1 b is 1176.600 times the mass of Earth. The radius of MASCARA-1 b is 16.814 that of Earth. At more than 50 Earth masses, MASCARA-1 b is a gas giant, a planet whose mass is mostly made up of hydrogen and helium, like Jupiter and Saturn in our solar system.