Astronomers observe a dwarf planet, designated DP-2026, in a stable, nearly circular orbit in the outer regions of the Solar System. The orbital radius of DP-2026 is measured to be 64 AU64\text{ AU}64 AU, where 1 AU1\text{ AU}1 AU is the mean Earth-Sun distance.
What is the approximate orbital period of DP-2026 around the Sun, in Earth years?
16 years16\text{ years}16 years
64 years64\text{ years}64 years
512 years512\text{ years}512 years
4096 years4096\text{ years}4096 years
28 exam-style questions on Edexcel GCSE Physics 7.1 The Solar System and gravity. Each one has a worked solution and a mark scheme showing where the marks go.