COROT-7b

High Quality Content by WIKIPEDIA articles! COROT-7b is a reported exoplanet orbiting around the star COROT-7. It was first detected photometrically by the French-led COROT mission and reported in early 2009. It is the smallest exoplanet to have its diameter measured, at 1.7 times that of the Earth. The HARPS spectrograph was subsequently used to measure the mass of COROT-7b by the radial velocity method at about 4.8 Earth masses, giving it a density of 5.6 ± 1.3 g cm 3, similar to Earth's. From this, it was concluded that the planet is not composed of pure iron. The likely composition is a predominantly rocky one, similar to Earth's, but with less iron and/or more water, due to the greater compression.... Mehr