Pluto got listed as a planet

[apetrov]

Describe the bug
There is Pluto in the planet list

Expected behaviour
Pluto should not be in the list

[smirik]

Actually, I have mentioned somewhere in the documentation (or the code) that while Pluto is not a planet anymore, many authors (including Chambers) make their calculations including Pluto. Thus, if one wants to reproduce or compare one's results with their results, it is important to keep the same model. Also, the idea of having a separate list of planets is not to define these planets but to define the list of bodies that have masses and thus affecting the particles.

However, I agree that the name "planets" is ambigous. Hence, it would be a good idea to rename it in something more straightforward.