How are the perihelion and aphelion of a planet determined?

Answer 1

From semi-major axis a and eccentricity e, the perihelion is a(1 #-#e) and aphelion is a(1 + e).

Given that a = 149.6 million km and e = 0.01671 for Earth, the perihelion and aphelion of the planet are, respectively, 147.1 and 152.1 million km.

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Answer 2

Hailey Alvarez

The perihelion and aphelion of a planet are determined by its elliptical orbit around the Sun. Perihelion is the point closest to the Sun, and aphelion is the farthest point. These positions are calculated based on Kepler's laws and observational data.

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Answer from HIX Tutor

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.