In Ptolemy's model of the solar system,the circle on which the center of the epicycle moved about the Earth was called the
A)Equant
B)Eccentric
C)Deferent
D)Capital

Question

Quizplus · Accepted Answer

In Ptolemy's model of the solar system, the circle on which the center of the epicycle moved about the Earth was called the deferent. The equant was a point off-center from the Earth where the planet moved at a constant speed, and the eccentric was the deviation of the orbit from a perfect circle. The "capital" is not a term related to Ptolemy's solar system model.

In Ptolemy's Model of the Solar System,the Circle on Which