[填空题]
Suppose that a binarya;kv 81/qbr3aume) 14q0 jzxhac e*ps-stac2 *xniw(lj9ci a/xh( r system consists of two stars of equal mass. They are observed to be separated by 360 million km and tc/xin(wa cij(9 hx2*lake 5.7 Earth years to orbit about a point midway between them. What is the mass of each? $\times 10^{29}$
