# Time Period of Satellite

Time period is the time taken by a satellite to go once around the Earth.

Important Points

- From it is clear that time period is independent of the mass of orbiting body and depends on the mass of central body and radius of orbit.
*T*^{2}∝*r*^{3}*r*becomes a semi-major axis if the orbit is elliptic. - Time period of nearby satellite:
*h*= 0 and*GM*=*gR*^{2}]*R*= 6400 km and*g*= 9.8 m/s^{2}.*∴**T*= 84.6 min ≈ 1.4 h