Q.What is the periodic time of a geostationary satellite?

[!TLDR] By definition, a geostationary satellite's period exactly matches the Earth's own rotation period. [!ANSWER] 24 hours (1 s …

A geostationary satellite is, by definition, one that appears stationary relative to a fixed point on the Earth's surface -- which requires its orbital period to be EXACTLY equal to the Earth's own rotation period about its axis, and its orbit to be in the equatorial plane with the same sense of rotation as the Earth. The Earth's rotation period is one day, so a geostationary satellite's periodic time is 24 hours (more precisely, one sidereal day of about 23 hours 56 minutes, but 24 hours is the val …

Recall the defining property of a geostationary satellite (same period as the Earth's ro …

Confusing the geostationary period (24 hours) with the much shorter period of a low-altit …