<P> The definition of planet set in Prague, Czech Republic, in August 2006 by the International Astronomical Union (IAU) states that, in the Solar System, a planet is a celestial body which: </P> <Ol> <Li> is in orbit around the Sun, </Li> <Li> has sufficient mass to assume hydrostatic equilibrium (a nearly round shape), and </Li> <Li> has "cleared the neighborhood" around its orbit . </Li> </Ol> <Li> is in orbit around the Sun, </Li>

What are the requirements for being a planet