WASP-148: A Sun-Like Star and Its Two Known Planets

WASP-148 is a G-type star located 803 light-years away. The star is estimated to be 3.6 billion years old, with a mass of 0.954 solar masses and a radius of 0.912 solar radii. Its reported temperature is 5560 K. The star's reported mass estimate is smaller than the Sun's, its reported radius estimate is smaller than the Sun's, and its reported temperature is cooler than the Sun's. Two planets have been identified orbiting this host.

WASP-148 b is a Jupiter-like planet discovered by the transit method in 2020. Its reported mass estimate is 91.2 Earth masses, its reported radius estimate is 8.47 Earth radii, and its orbital period is 8.8 days. The planet's reported radius estimate is larger than Earth's, and its reported mass estimate is larger than Earth's. Its mean density is 0.826 g/cm³, 0.15 times Earth's. Among the listed planets, WASP-148 b has the shortest year by reported estimates and the smallest reported mass.

WASP-148 c was discovered by the radial velocity method in 2020. The radial velocity method measures the wobble a planet's gravity induces in its star's motion; repeated wobbles reveal the planet and its orbital period. WASP-148 c has a reported mass estimate of 125 Earth masses and an orbital period of 34.5 days. Its reported mass estimate is larger than Earth's. Among the listed planets, WASP-148 c has the longest year by reported estimates and the largest reported mass.