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?