55 Cancri E - Orbit and Mass

Orbit and Mass

The radial velocity method used to detect 55 Cancri e obtains the minimum mass of 7.8 times that of Earth, or 48% of the mass of Neptune. The transit shows that its inclination is about 83.4 ± 1.7. So the real mass is close to the minimum. 55 Cancri e is further coplanar with b.

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