This article takes the knowledge [[Conics - Circles, Parabolas & More! (Maths)|ellipses, parabolas and hyperbolas]] as a given. Brush up on these if you haven't or else virtually nothing will make sense. # Intro - Specific Angular Momentum # The Orbit Equation *This places a heavy emphasis on polar coordinate ellipses! Check them out* [[Conics - Circles, Parabolas & More! (Maths)#Polar Conic Sections|here]]. The equation is: $r = \frac{a(1-e^2)}{1+e\cos\theta}$ >[!Abstract]- Orbit Equation Proof >This is difficult. No holding back! >First, we take the polar equation of an ellipse: # What's Next