FR Canis Majoris
FR Canis Majoris is a blue-white main sequence star located in the constellation of Canis Major. According to the new reduction of parallax data from the Hipparcos satellite, it is located approximately 1,750 light-years from the solar system.
Observations
FR Canis Majoris is a blue-white main-sequence star of spectral type B1.5IVe. With an effective temperature of, its luminosity is over 10,000 times greater than that of the Sun. It rotates with a projected rotational velocity, the lower limit of its real equatorial rotation speed, of, its rotational axis being inclined at 48° with respect to the observer on Earth. It has a mass of about 11 solar masses, thus being above the limit beyond which stars violently end their lives by exploding as supernovae. Its age is estimated at 14.5 million years, which represents 83% of its main-sequence life. It is a Be star and also a Gamma Cassiopeiae variable, eruptive variables that show irregular variations in their luminosity caused by the expulsion of matter with a variation amplitude of 0.116 magnitudes.It has an absolute magnitude of −2.7 and its positive radial velocity indicates that the star is moving away from the solar system.