1. The problem statement, all variables and given/known data A satellite is in a circular equatorial orbit around the Earth (over the equator). If the satellite flies over Singapore 9 times a day, what is the radius of the orbit? 2. Relevant equations r3 = T2GME/4π2 3. The attempt at a solution G = 6.67x10-11 ME = 5.97x1024 T = (24x60x60)/9 = 9600 r = 9.76 x 106m But the answer is 2.3x107m. Am I missing out anything? Or is the answer wrong?