Orbital Mechanics

Step 1: The time period of the geostationary satellite is 24 hours.

Step 2: Given, . The time period is proportional to (Kepler’s third law), so
Step 3: The second satellite moves in the opposite direction, so the relative angular velocity is the sum of their angular velocities. The time period observed from the first satellite is
Step 4: Substitute hours, then Step 5: Since the measured time period is ,