# 2: Conic Sections

- Page ID
- 6797

[ "article:topic-guide", "authorname:tatumj" ]

A particle moving under the influence of an inverse square force moves in an orbit that is a conic section; that is to say an ellipse, a parabola or a hyperbola. We shall prove this from dynamical principles in a later chapter. In this chapter we review the geometry of the conic sections.