2024年12月13日 · K2-3 d is a super Earth exoplanet that orbits a K-type star. Its mass is 2.2 Earths, it takes 44.6 days to complete one orbit of its star, and is 0.2014 AU from its star. Its …

Cold Jupiters and improved masses in 38 Kepler and K2 small-planet systems from 3661 high-precision HARPS-N radial velocities. No excess of cold Jupiters in small-planet systems.

2016年11月28日 · K2-3d is an extrasolar planet 147 light-years away that was discovered by NASA’s Kepler K2 mission. K2-3d’s size is 1.5 times that of the Earth. The planet orbits its …

The K2-3 system revisited: testing photoevaporation and core-powered mass loss with three small planets spanning the radius valley

2018年7月5日 · The third planet discovered, K2-3d, has an orbital period of 44.6 days with a radius 1.51 times that of Earth. It is located at 0.21 AU, which is much closer to its host star …

2016年11月21日 · We report the first ground-based transit observation of K2-3d, a 1.5 R⊕ planet supposedly within the habitable zone around a bright M-dwarf host star, using the Okayama …

We combine stellar spectral information with self-consistently derived stellar and planetary properties to investigate the K2-3 system. We measure the UV flux of K2-3 with HST/COS and …

2016年11月28日 · A team of astronomers in Japan has conducted the first ground-based transit observation of K2-3d, a super-Earth within the habitable zone around a bright M-dwarf star, …

2016年11月29日 · Researchers brought the Okayama Astrophysical Observatory's 188-centimeter (6 feet) telescope to bear on the speck to fine-tune their understanding of the …

We report the first ground-based transit observation of K2-3d, a 1.5R⊕ planet supposedly within the habitable zone around a bright M-dwarf host star, using the Okayama 188cm telescope …