Ma = m*w^2*R=m*(2*pi/T)^2*R=G*m*M/R^2 m*(2*pi/T)^2*R=G*m*M/R^2 M = (2*pi/T)^2*R^3/G = (2*pi/((2*60+3)*60+30))^2*1890000^3/(6,67*10^(-11)) кг = = 7,28E+22 кг