> Sun Jupiter is my argument for why a planet shouldn't be defined only by barycenter location. But Jupiter doesn't sustain nuclear fusion so it can't be consi

> Sun Jupiter is my argument for why a planet shouldn't be defined only by barycenter location. But Jupiter doesn't sustain nuclear fusion so it can't be considered in the same category as the sun. If it was a red/brown dwarf, then we would be in a binary system and that'd be a different story entirely.