According to the provided mass spectrum table, what is the approximate upper mass limit, in Jupiter masses ($M_J$), for an object to be classified as a gas giant planet?

Answer

$13 M_J$

The text establishes that the mass range for a gas giant planet sits below roughly 13 times the mass of Jupiter ($13 M_J$), marking the lower boundary for brown dwarfs.

According to the provided mass spectrum table, what is the approximate upper mass limit, in Jupiter masses ($M_J$), for an object to be classified as a gas giant planet?
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