プロキシマ・ケンタウリ
Proxima Centauri c is an exoplanet that was formally discovered in 2020 and could be a super-Earth or mini-Neptune. It has a mass of roughly 7 and orbits about 1.49 AU from Proxima Centauri with a period of . In June 2020, a large ring system encircling the planet was possibly detected. While not formally confirmed, its existence is undisputed.