Glossary term: Planetary system

Description: A planetary system is a system where one or more planets orbits one or more stars, brown dwarfs and/or stellar remnants. Our Solar System is a planetary system with the Sun at its center. Thousands of planetary systems have been discovered around other stars with a few around substellar objects known as brown dwarfs or around stellar remnants such as neutron stars or white dwarfs. Planetary systems can also be found around components of multiple star systems, such as the planet orbiting Proxima Centauri, the nearest star to the Sun and a member of a triple star system. There are also a handful of cirumbinary planets that orbit both stars in a binary star system. The scale of planetary systems varies greatly with some planets orbiting only a few stellar radii from their host star while others have orbits thousands of astronomical units across.

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Term and definition status: This term and its definition is still awaiting approval

The OAE Multilingual Glossary is a project of the IAU Office of Astronomy for Education (OAE) in collaboration with the IAU Office of Astronomy Outreach (OAO). The terms and definitions were chosen, written and reviewed by a collective effort from the OAE, the OAE Centers and Nodes, the OAE National Astronomy Education Coordinators (NAECs) and other volunteers. You can find a full list of credits here. All glossary terms and their definitions are released under a Creative Commons CC BY-4.0 license and should be credited to "IAU OAE".