TRAPPIST-1e is an exoplanet that orbits the star TRAPPIST-1. The exoplanet orbits the star on a roughly circular orbit at a distance of 0.029 AU.
Does TRAPPIST-1e orbit its star at a smaller or at a larger orbital radius than Earth’s orbital radius around the Sun?
Use the formula , where is the radius of the exoplanet’s orbit, is the mass of the host star, and is the universal gravitational constant, to find , the period of the exoplanet’s orbit. TRAPPIST-1 has a mass of kg. Use a value of m3/kg⋅s2 for . Give your answer in days to two decimal places.
TRAPPIST-1e has a mass, , of kg and a planet radius, , of 5,800 km. Use the formula to find , the surface gravity on TRAPPIST-1e. Give your answer to 1 decimal place.
Which of the following is the correct definition of an exoplanet?
Which of the following is the most correct definition of the term ice planet?