# Is a Procyon - brown dwarf - Jupiter - superearth - Mars - Pluto system theoretically possible? [closed]

I once conducted a thought experiment and with some amateurish calculations based around Hill sphere and Roche limit came up with semi-major axis distances like this:

Procyon-BD:  3.6 AU
BD-Jupiter:  0.7 AU
Jupiter-SE:  0.12 AU
SE-Mars:     0.02 AU
Mars-Pluto:  0.0033 AU


Assuming respective masses of: 496 260 earths, 15 000 earths, 313 earths, 6 earths, 0.107 earths and 0.00218 earths.

Clarification: I use names of specific bodies (Procyon, Jupiter etc) but a Procyon-like star, a Jupiter-like gas giant and so on would be more precise. Think of them only as examples of bodies with such masses.

Could such a system be possible?

• You want a system with those exact distances or a system with just those bodies present? Should they all orbit the central object (thus Procyon) or should each orbit the next bigger object? The latter would certainly not work stably. A system would also be considered bound when the orbits are outside the bigger object's hill sphere. – planetmaker May 10 '20 at 14:44
• A brown dwarf orbits a Procyon-like star in the center, a Jupter-like gas giant orbits a brown dwarf, a superearth orbits a gas giant, a Mars-like planet orbits a superearth and a Pluto-like planet orbits a mars planet. So it wouldn't be stable? Why? – z33k May 10 '20 at 15:01
• For information, I have raised a question on Meta about the on-topicness of "solve my n-body system"-type questions. – user24157 May 10 '20 at 16:18
• Are you just asking about the orbit stability of such a system? Or are you (also) asking if it's theoretically possible for such a system to form naturally? (My guess is that it's not stable, and that it couldn't form). – PM 2Ring May 11 '20 at 0:33
• I’m voting to close this question because it is getting into off-topic territory. The general question about the feasibility of subsatellites has already been asked, the question about details of a specific hypothetical system are more suited for Worldbuilding. – user24157 May 18 '20 at 17:32