Chapter 4: Problem 11

What is the difference between the synodic period and the sidereal period of a planet?

Short Answer

Expert verified

The synodic period refers to the time taken by a celestial body to return to the same position relative to two other bodies. The sidereal period, on the other hand, refers to the time taken by the celestial body to make a complete rotation around its star, measured relative to distant stars. The synodic period differs from the sidereal period because both the Earth and the observed planet are in motion.

Step by step solution

Define Synodic Period

The synodic period is the time required for a celestial body to return to the same position relative to two other bodies. For a planet in our solar system, it would be measured as the time interval between two opposite positions of the Sun and Earth.

Define Sidereal Period

The sidereal period is the orbital period of a celestial body, measured relative to the stars. It represents the time the celestial body takes to make one complete revolution around its star.

Compare and Contrast

The key difference between these two periods lies in their reference point. The synodic period is referenced to the position between two other celestial bodies, whereas the sidereal period is referenced to stars. For a planet in our solar system, its synodic period usually differs from its sidereal period because both the Earth and the other planet are in motion.

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What is the difference between the synodic period and the sidereal period of a planet?

Short Answer

Step by step solution

Define Synodic Period

Define Sidereal Period

Compare and Contrast

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