BY Abitur Astrophysics Practice Questions - Bavaria Abitur Physics With Astrophysics - Grundlegendes Anforderungsniveau (gA Astro) Exam

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An asteroid orbits the Sun with a period of 27 years. Using T^2 = a^3 (T in years, a in AU), what is the semimajor axis of its orbit?

3 AU 9 AU 18 AU 81 AU

Correct Answer:

9 AU

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