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It would seem so. Think about brown dwarfs. At the lower end of the mass spectrum, they're only a couple dozen times that mass of Jupiter, and only a couple times the mass of Hot Jupiters. Some brown dwarfs have been found to have planets. Taking a look at some examples: 2M1207: Roughly 25 Jupiter masses, this brown dwarf has a planetary-mass object ...

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Video games think so: http://en.spaceengine.org/forum/10-1762-1 More generally, we know this can work for stars in a stable way: there are ternary stars where a close binary orbits a large, distant third sun. So replace the binary stars by gas giants, and there you go. And the Pluto-Charon system tells us that similarly sized bodies can orbit each other ...

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Yes, Pluto is a dwarf planet, along with Ceres and Eris which are in the Solar System. It was classified a dwarf planet in 2006 or 2007. Sorry for my inaccurate answer.

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