文章基本信息

标题：A QUANTITATIVE CRITERION FOR DEFINING PLANETS
本地全文：下载
作者：Jean-Luc Margot
期刊名称：The Astronomical journal
印刷版ISSN：0004-6256
电子版ISSN：1538-3881
出版年度：2015
卷号：150
期号：6
DOI：10.1088/0004-6256/150/6/185
语种：English
出版社：American Institute of Physics
摘要：A simple metric can be used to determine whether a planet or exoplanet can clear its orbital zone during a characteristic time scale, such as the lifetime of the host star on the main sequence. This criterion requires only estimates of star mass, planet mass, and orbital period, making it possible to immediately classify 99% of all known exoplanets. All eight planets and all classifiable exoplanets satisfy the criterion. This metric may be useful in generalizing and simplifying the definition of a planet.
关键词：celestial mechanics;gravitation;planets and satellites: dynamical evolution and stability;planets and satellites: fundamental parameters;planets and satellites: general;standards