| Proper Name | Galileo | | Designations | Copernicus b, Rho1 Cancri b, 55 Cancri b, HD 75732 b
Also sometimes specified as Rho1 Cancri A b, 55 Cancri A b, HD 75732 A b | | Classification | Gas Giant | | Orbital Period | 14 days, 16 hours | | Mean Distance from Copernicus | 17.0 million km
0.11 AU | | Mass | 0.80 x Jupiter | | Diameter | Not known | | Temperature | Not known | | Parent star | Copernicus (Rho1 Cancri, 55 Cancri), yellow dwarf in Cancer | | Other planets in this system | Brahe (Copernicus c), gas giant
Harriot (Copernicus f), gas giant
Janssen (Copernicus e), super Earth
Lipperhey (Copernicus d), gas giant | | Notes | Rho1 Cancri or 55 Cancri is a binary system, within which the component Rho1 Cancri A is an orange star named Copernicus. The star has five known planets, four of which are gas giants, and Galileo is the most massive of these. Galileo follows a close orbit of the star Copernicus, with only the inner planet Janssen (a rather less massive gas giant) orbiting closer to the star. |
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