M33-013406.63

M33-013406.63 is a binary star system in the Triangulum Galaxy. M33-013406.63 A is an O-type supergiant with a luminosity of 4,677,000 solar luminosities and has a radius of 80 solar radii. M33-013406.63 B is a B-type hypergiant with a luminosity of 407,380 or possibly 7,912,000 solar luminosities and has a radius of 210.2 solar radii.