Tags: Star.
FS Canis Majoris (FS CMa) also known as HD 45677 or MWC 142 is a B-type star in the constellation of Canis Major. It has an apparent visual magnitude of approximately 8.50 having varied between magnitudes 7.35 and 8.58. Feinstein and colleagues reported in 1976 that it had decreased by 0.9 magnitude between 1969 and 1976 whereas it had only varied by 0.3 magnitude in the 70 years beforehand.