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MCQIntermediateExoplanets & Stellar Systems
USAAAO — 2023 First Round
Question 13
The apparent magnitude of a star of radius 0.41R☉ as observed from Earth appears to fluctuate by 0.037. That is, the difference between the maximum and minimum apparent magnitudes is 0.037. This fluctuation is caused by an exoplanet that orbits the star. Determine the radius of the exoplanet.
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Source
USAAAO 2023 First Round. Question text, choices, and answer were transcribed from the official USAAAO exam and solutions PDFs.