Claim: The WR 7 is a star in the Canis Major constelation (found in the southern celestial hemisphere) with a solar mass of 13 which is said to be 16 times bigger than the earth's sun.
Evidence: Assuming a distance of 4.8 kiloparsecs (15,600 light-years), this star is calculated to be 280,000 times brighter than our Sun] 16 times more massive, and 1.41 times larger with a surface temperature of 112,000 K.