An unamed star is a 2 solar masses star. One of the planets you observe is found by the transit method. The flux from the star dips at a level 10-4 times lower than its normal level. You wait to observe a second transit, and it happens after 4.5 years. What is the radius using the Stefan Bolztmann Formula? Assuming a circular orbit, what would the speed of the wobble caused onto the star be?

luminosity= 8.5 times that of the Sun

surface temperature=8500K.

albedo=0.33

Assume that the greenhouse effect may range between 10 K to 70 K