Creating a simple orbit of one object

We can have a single body in a standard orbit using default values.

How to do it...

If we use this script:

import rebound
sim = rebound.Simulation()
sim.add(m=1)
sim.add(a=1)
fig = rebound.OrbitPlot(sim)
fig

We have the resulting figure:

How it works...

Any instance of rebound starts with the Simulation() command.

add(m=1) adds a star in the center of the diagram. add(a=1) adds an object in orbit about m. In this case, many defaults take effect, resulting in this very standardized circular orbit.