Final answer:
The circular orbit of a satellite orbiting the Earth is characterized by a constant, namely the radius cubed divided by the period squared. The satellite moves at a constant speed around the Earth. The location of the planet on the circumference of the orbit is not related to the speed of the object.
Step-by-step explanation:
The circular orbit of a satellite orbiting the Earth is characterized by a constant, namely, the radius cubed divided by the period squared. This is known as the constant of proportionality for all satellites orbiting the same parent body. In a circular orbit, the satellite moves at a constant speed around the Earth. The location of the planet on the circumference of the orbit is not related to the speed of the object.