B型主序星
The primary, Lambda Cancri A, is a B-type main-sequence star with a stellar classification of B9.5 V. It has 2.1 times the mass of the Sun and radiates 78 times the Sun's luminosity from its photosphere at an effective temperature of roughly 9,500 K. Its close companion, Lambda Cancri B, has 80% of the mass of the Sun.