A simple metric can be used to determine whether a planet or exoplanet can clear its orbital zone during a characteristic time scale, such as the lifetime of the host star on the main sequence. This criterion requires only estimates of star mass, planet mass, and orbital period, making it possible to immediately classify 99% of all known exoplanets. All 8 planets and all classifiable exoplanets...

Planet-planet scattering best explains the eccentricity distribution of extrasolar giant planets. Past literature showed that orbits planets evolve due to planet-planet scattering. This work studies spin evolution in 2-planet systems. Spin can dramatically spin-orbit coupling made possible by evolving and orbital precession during phase. The main source torque planet is stellar torque, total pl...

The detection of planetary transits with high photometric precision has a rich potential of various informations, especially for those in close orbit. This contribution gives an overview and new perspectives on the subject, in particular:-planet radius measurement to constraint their internal structure-multicolor determination of the albedo of planets in close orbit-spectroscopic investigation ...