NGTS-4 is a star with 0.75 times the mass of the Sun, and 0.84 times its radius. It is located 915.05 light years away from the solar system.
NGTS-4 is known to have 1 exoplanets in orbit around it.
NGTS-4 b was discovered by the Paranal Observatory observatory, in 2019-07, using the transit method. Its semi-major axis is 0.02 astronomical units, as compared to Earth's which is 1 astronomical unit. The mass of NGTS-4 b is 20.610 times the mass of Earth. The radius of NGTS-4 b is 3.180 that of Earth. At more than 10 Earth masses, NGTS-4 b is an ice giant, a planet that is made up mostly of volatiles like water, amonia and methane, and enveloped by a dense hydrogen and helium atmosphere, much like Uranus and Neptune in our solar system.