As mentioned by Author of The Stellar Object Book A brown dwarf or exoplanet that is circling a star is an example of a substellar object. Substellar companions have been described as objects with masses between 8 and 23 Jupiter masses. Below 13 Jupiter masses, an object orbiting a star is frequently referred to as a planet, and above that, as a brown dwarf.
As mentioned by Author of The Stellar Object Book A brown dwarf or exoplanet that is circling a star is an example of a substellar object. Substellar companions have been described as objects with masses between 8 and 23 Jupiter masses. Below 13 Jupiter masses, an object orbiting a star is frequently referred to as a planet, and above that, as a brown dwarf.
