NN Ser is a star with 0.54 times the mass of the Sun, and NaN times its radius. It is located 1682.37 light years away from the solar system.
NN Ser is known to have 2 exoplanets in orbit around it.
NN Ser c was discovered by the Multiple Observatories observatory, in 2010-10, using the eclipse timing variations method. Its semi-major axis is 5.35 astronomical units, as compared to Earth's which is 1 astronomical unit. The mass of NN Ser c is 2330.940 times the mass of Earth. The radius of NN Ser c is 12.600 that of Earth. At more than 50 Earth masses, NN Ser c is a gas giant, a planet whose mass is mostly made up of hydrogen and helium, like Jupiter and Saturn in our solar system.
NN Ser d was discovered by the Multiple Observatories observatory, in 2010-10, using the eclipse timing variations method. Its semi-major axis is 3.43 astronomical units, as compared to Earth's which is 1 astronomical unit. The mass of NN Ser d is 731.400 times the mass of Earth. The radius of NN Ser d is 13.300 that of Earth. At more than 50 Earth masses, NN Ser d is a gas giant, a planet whose mass is mostly made up of hydrogen and helium, like Jupiter and Saturn in our solar system.