Of the motion of bodies in eccentric conic sections.

We simplify Section 3 of Principia Mathematica by Isaac Newton

Proposition 11 Problem 6

Revolving Body

Newton

Proposition 12 Problem 12

Revolving Body

Newton

Proposition 13 Problem 8

Movement in Parabola

Newton

Proposition 14-15 Theorem 6-7

Bodies in Orbit

Newton

Proposition 16 Theorem 8

Bodies in Orbit

Newton

Proposition 17 Problem 9

Bodies in Orbit

Newton