All articles tagged with #ultra short period
Astronomers using TESS have discovered a new Earth-sized exoplanet, TOI-2431 b, orbiting a nearby star every 5.4 hours, making it one of the shortest period exoplanets known. The planet is likely molten due to its proximity to its star and is a promising target for further study with the James Webb Space Telescope.
Astronomers using NASA's TESS have discovered a new ultra-short-period exoplanet, TOI-1437 b, nearly twice the size of Earth and orbiting its host star in less than a day. This finding adds to the 7,000 candidate exoplanets identified by TESS, with 417 confirmed so far. The planet's characteristics, such as its mass, radius, and orbit, suggest it may have an Earth-like composition and a high-mean-molecular-weight atmosphere. Additionally, another smaller planet, TOI-1437 c, was detected in the same system. Further observations, possibly with the James Webb Space Telescope, are needed to confirm these findings.
Using NASA's TESS, astronomers have discovered a dense Neptune-sized exoplanet called TOI-332 b. It has a radius of 3.2 Earth radii and a mass of 57.2 Earth masses, making it one of the densest Neptune-sized planets known. TOI-332 b orbits its host star every 18.65 hours at a distance of 0.016 AU. It belongs to the "Neptunian desert," a region where such planets are rarely found. The planet's interior structure is likely dominated by refractory materials, challenging current theories of planet formation.