sentences:  With the radius of 2.35, it is currently the largest known planet likely to have a predominantly rocky composition.At 17 Earth masses it is well above the 10 Earth mass upper limit that is commonly used for the term 'super-Earth' so the term mega-Earth has been proposed.However, in July 2017, more careful analysis of HARPS-N and HIRES data showed that Kepler-10c was much less massive than originally thought, instead around 7.37 (6.18 to 8.69) with a mean density of 3.14 g/cm3.