Exoplanets and Known Multiple Systems

Table 6.1 summarizes the properties of planets in multiple systems. The name of a planet is defined by the name of the star, followed by a letter: b, c, d, etc. The letter a corresponds to the star itself. It should be noted that the alphabetical order corresponds to the chronological order of the discoveries. That order corresponds

Table 6.1 The characteristics of 20 systems known around Main-Sequence stars at the beginning of 2007. [From the database at http://exoplanet.eu]


Mass (Mj)

Period (days)

Ratio of periods**

a (AU)


Incl. (°)

47 UMa b

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