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List of exoplanet extremes

The following are lists of extremes among the known exoplanets. The properties listed here are those for which values are known reliably. The study of exoplanets is one of the most dynamic emerging fields of science, thus these values may change as new discoveries are made.

System characteristics
}, and Jupiter masses, respectively. This results in a mean planetary mass of . Could alternatively be the system of HR 8799, in which four planets each have masses within the range . Nu Ophiuchi b and c have minimum masses of 22.206 and 24.662 Jupiter masses, respectively. The planet KMT-2020-BLG-0414Lc and the super-Earth KMT-2020-BLG-0414Lb have a mass ratio of about 4,590 to 1, although at Jupiter masses KMT-2020-BLG-0414Lc might or might not be considered as a brown dwarf.