The semi-major axis, a, of an elliptical planetary orbit is equal to the:______.
a. width of the ellipse.
b. distance between the planet and the Sun at perihelion.
c. average distance between the planet and the Sun.
d. distance between the planets and the Sun at aphelion.

Respuesta :

The  semi-major axis of an elliptical planetary orbit is equal to the distance between the planets and the Sun at aphelion.

What is a semi-major axis?

The term semi major axis refers to a half of the of the distance from middle of an ellipse to another end of the ellipse.

Recall that the solar system has the sun at the center if the ellipse. Hence, the  semi-major axis of an elliptical planetary orbit is equal to the distance between the planets and the Sun at aphelion.

Learn more about semi-major axis: https://brainly.com/question/1029970

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