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MCQIntermediateExoplanets & Planetary Systems
USAAAO — 2020 First Round
Question 18
Recently, the exoplanet Proxima Centauri b was discovered using the radial-velocity method. Its orbital period is 11.19 days, and it orbits Proxima Centauri, which has a mass of 0.122 Solar masses, a radius of 0.154 Solar radii, and an effective temperature of 3042 K. Which of the following is closest to the semimajor axis of Proxima Centauri b?
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