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Astronomy
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Tropical and Sidereal Years
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Astronomy
AST.048 Tropical and Sidereal Years
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A navigator is comparing where the Sun appears relative to background stars from one orbit to the next. Which distinction matters most?
A
Sidereal year uses the star background, while tropical year uses the seasonal reference.
B
Both terms mean exactly the same thing in every reference frame.
C
Sidereal year is a daily rotation, while tropical year is a monthly phase cycle.
D
Tropical year uses the Moon's path, while sidereal year uses ocean currents.
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