* The value for the mass of the planet is a lower limit if determined from radial velocity measurements, in cases where no actual transit was observed and inclination is unknown.
** Our computed planet temperatures are based on an assumption that the planet is in equilibrium with radiation from its star balanced by its own black body radiation, taking into account some reflection of radiation from the planet (albedo). Actual albedo is unknown and unless more definite information is available in the discovery paper, we assume a "generic" albedo of 0.3. The temperatures do not take into account atmospheric properties (greenhouse effect), since these are unknown. In the case of Jupiter, not only does it have an atmosphere to complicate things, but a significant internal heat source as well.
Interestingly, if Earth did not have atmosphere, its temperature would be below freezing point of water, the first value given in the table as average temperature on Earth if there were no greenhouse gases. The second value is Earth's actual average temperature.
*** The inclination is the tilt of the orbital plane of the planet with respect to the plane of the sky, so 90 degrees is viewing the planet's orbit edge-on. All transiting planets with long-period orbits have this inclination very close to 90 degrees, and even close-in transiting planets have inclinations above ~ 80 degrees.
† M/H metallicity value is used instead of Fe/H.
†† Non-transiting planet
††† Kepler community planet discoveries listed in this table (bottom section) are in the Kepler field of view, determined and published independently from the Kepler Mission Science Team.