QUESTION

A star is observed with its brightness measured continuously and very precisely for several weeks. It is observed to briefly dim due to a planet transit, by 0.020 per cent (i.e. to 0.99980 of normal brightness) every 8 days. From its spectrum we know that the star is identical to the Sun. (a) What is the radius of this planet, in Jupiter Radii? (b) What is the semi-major axis of the planet’s orbit?

Rsun: 6.957x10^8 m

Public Answer

EH3PCH The First Answerer