[填空题]
Suppose that a binary-star system consists of two stars of equal d(2 p( klz*: pwdqs0somfar-jcb.9)ok ass. They are observed to be separated by 360 million km and take 5.7 Earth years to orbit about a point midway between them. What is the mass ocba-jo) k9. rff each? $\times 10^{29}$
