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Gliese 581c / ˈ ɡ l iː z ə / (Gl 581c or GJ 581c) is an exoplanet orbiting within the Gliese 581 system. It is the second planet discovered in the system and the third in order from the star. With a mass about 6.8 times that of the Earth, it is classified as a super-Earth (a category of planets with masses greater than Earth's up to ten ...
Gliese 667 Cc is a super-Earth, an exoplanet with a mass and radius greater than that of Earth, but smaller than that of the giant planets Uranus and Neptune. It is heavier than Earth with a minimum mass of about 3.7 Earth masses. [5] The equilibrium temperature of Gliese 667 Cc is estimated to be 277.4 K (4.3 °C; 39.6 °F). [6]
Lacaille 9352 c is considered a Super-Earth with a minimum mass of 7.6 Earth masses. [4] With an orbital period of 21.8 days, the exoplanet is located at 0.12 AU from the star, which is close to the inner edge of the habitable zone (but still outside). [5] The exoplanet has a calculated equilibrium temperature of 352 K (79 °C; 174 °F). [2]
For Gliese 876 d, calculations range from 9,200 km (1.4 Earth radii) for a rocky planet and very large iron core to 12,500 km (2.0 Earth radii) for a watery and icy planet. Within this range of radii the super-Earth Gliese 876 d would have a surface gravity between 1.9g and 3.3g (19 and 32 m/s 2). However, this planet is not known to transit ...
Download QR code; Print/export ... Super-Earth; 0–9. 55 Cancri e; 61 Virginis b; C. CoRoT-7b; G. G 9-40 b; GJ 1132 b; GJ 1214 b; GJ 3634 b; Gliese 357 d; Gliese ...
Gliese 667 Cb is an exoplanet orbiting the star Gliese 667 C, a member of the Gliese 667 triple-star system. It is the most massive planet discovered in the system and is likely a super-Earth or a mini-Neptune. Orbital-stability analysis indicates that it cannot be more than twice its minimum mass.
Presuming resonance chain extends to the outermost, cold, super-terrestrial Gliese 357 d and the resonances are simple, GJ 357 might have a more suitable planet for life with an approximate 27.5 day period and almost Earth's flux. Additionally, it might host a Mars-sized planet in 2:1 period ratio with GJ 357 c and 2:3 ratio with hypothetical ...
Dynamical simulations of the Gliese 581 system assuming that the orbits of the three planets are coplanar show that the system becomes unstable if the masses of the planets exceed 1.6–2 times the minimum values. Using earlier minimum mass values for Gliese 581d, this implies an upper mass limit for Gliese 581d of 13.8 Earth masses. [12]