For a planet moving in an elliptical orbit, fraction of maximum and minumum angular is given to be n(adsbygoogle = window.adsbygoogle || []).push({});

[tex]\frac{\dot{\theta}_{max}}{\dot{\theta}_{min}} = n[/tex]

Show that

[tex]\varepsilon = \frac{\sqrt{n}-1}{\sqrt{n}+1}[/tex].

I keep finding [tex]\varepsilon = -\frac{n^2-1}{n^2+1}[/tex] :yuck: Can someone show a path to correct solution?

**Physics Forums | Science Articles, Homework Help, Discussion**

Join Physics Forums Today!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# Homework Help: Eccentricity in kepler problem

**Physics Forums | Science Articles, Homework Help, Discussion**