Region around WR102

WR 102 is a Wolf–Rayet star in the constellation Sagittarius, an extremely rare star on the WO oxygen sequence. It is a luminous and very hot star, highly evolved and close to exploding as a supernova. It is one of the very few known oxygen-sequence Wolf–Rayet stars, just four in the Milky Way galaxy and six in externalgalaxies. It is also the hottest known, with a surface temperature of 210,000 K.