Hi, I've come across a question that I can't seem to find an equation for anywhere, it seems to exists since I have found mention of it in various papers, but none of them listed it, or at least not in a way I could understand.(adsbygoogle = window.adsbygoogle || []).push({});

The question is to find the radius of a fictional extrasolar planet, and the information we are given includes the bolometric flux of the star, what percentage it decreases by during an eclipse and the distance to the star. My question is: what equation, if any, can help me find the radius of the planet?

Note: This question is asking for the planet's radius, not the radius of it's orbit.

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# Finding an Extrasolar Planet's Radius

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