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True mass The term ''true mass'' is synonymous with the term mass, but is used in astronomy to differentiate the measured mass of a planet from the lower limit of mass usually obtained from radial velocity techniques.〔 Methods used to determine the true mass of a planet include measuring the distance and period of one of its satellites,〔 advanced astrometry techniques that use the motions of other planets in the same star system,〔 combining radial velocity techniques with transit observations (which indicate very low orbital inclinations),〔 and combining radial velocity techniques with stellar parallax measurements (which also determine orbital inclinations).〔 == See also ==
* Rest mass * Minimum mass
抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)』 ■ウィキペディアで「True mass」の詳細全文を読む
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