TOI-201
作者: bili49355649857
公開日:
TOI-201, also known as HD 39474 and HIP 27515, is a single F6V-type main-sequence star about 370 light-years away in the constellation Pictor. A system of three planets was discovered orbiting this star via the transit method and transit timing variations between 2020 and 2025, including a super-Earth (TOI-201 d), a warm Jupiter (TOI-201 b), and a brown dwarf (TOI-201 c). The innermost planet d has a mass of approximately 6 times that of Earth and a radius of 1.4 times that of Earth, completing an orbit once every 5.85 days. The warm Jupiter b has a mass of approximately 0.58 times that of Jupiter and a radius of 1.06 times that of Jupiter, with an orbital period of 52.98 days. The brown dwarf c has a mass of approximately 14.2 times that of Jupiter and a radius of 0.99 times that of Jupiter, orbiting every 2,890 days (7.9 years) on a highly eccentric path. The system is dynamically evolving, with orbital changes observable on human timescales—the innermost planets' transit times drift by up to 30 minutes within a decade. TOI-201 c holds the record as the longest-period transiting object ever discovered.
このページの翻訳に こちらから ご協力ください。
アドオンのインストール方法は？ こちら をご覧ください。