Gravitation

Two satellites revolve around a planet in coplanar circular orbits in anticlockwise direction. Their period of revolutions are 1 hour and 8 hours respectively. The radius of the orbit of nearer satellite is 2 \(\times\) 10³ km. The angular speed of the farther satellite as observed from the nearer satellite at the instant when both the satellites are closest is \({\pi \over x}rad\,{h^{ - 1}}\) where x is ____________.