Answer
We can see the graph of the four orbits below:
Work Step by Step
$r = \frac{a~(1-e^2)}{1+e~cos~\theta}$
Mercury:
$a = 0.39$
$e = 0.206$
$\theta = 0^{\circ}~~~~~~~r = 0.31$
$\theta = 90^{\circ}~~~~~~r = 0.37$
$\theta = 180^{\circ}~~~~~r = 0.47$
$\theta = 270^{\circ}~~~~~r = 0.37$
Venus:
$a = 0.78$
$e = 0.007$
$\theta = 0^{\circ}~~~~~~~r = 0.775$
$\theta = 90^{\circ}~~~~~~r = 0.78$
$\theta = 180^{\circ}~~~~~r = 0.785$
$\theta = 270^{\circ}~~~~~r = 0.78$
Earth:
$a = 1.00$
$e = 0.017$
$\theta = 0^{\circ}~~~~~~~r = 0.98$
$\theta = 90^{\circ}~~~~~~r = 1.00$
$\theta = 180^{\circ}~~~~~r = 1.02$
$\theta = 270^{\circ}~~~~~r = 1.00$
Mars:
$a = 1.52$
$e = 0.093$
$\theta = 0^{\circ}~~~~~~~r = 1.38$
$\theta = 90^{\circ}~~~~~~r = 1.51$
$\theta = 180^{\circ}~~~~~r = 1.66$
$\theta = 270^{\circ}~~~~~r = 1.51$
We can see the graph of the four orbits below:
