In astronomy, the rotation period or spin period of a celestial object (e.g., star, planet, moon, asteroid) has two definitions. The first one corresponds...

Earth's rotation or Earth's spin is the rotation of planet Earth around its own axis, as well as changes in the orientation of the rotation axis in space...

Period of Rotation mey refer to: Rotation period (astronomy) Rotational frequency This disambiguation page lists articles associated with the title Period...

if the day is defined as a sidereal day (also known as the sidereal rotation period). This is similar to how the time kept by a sundial (Solar time) can...

Rotation or rotational motion is the circular movement of an object around a central line, known as axis of rotation. A plane figure can rotate in either...

increases. The solar rotation period is 25.67 days at the equator and 33.40 days at 75 degrees of latitude. The Carrington rotation[clarification needed]...

A synodic day (or synodic rotation period or solar day) is the period for a celestial object to rotate once in relation to the star it is orbiting, and...

rotational frequency is the rotation period or period of rotation, T=ν−1=n−1, with dimension of time (SI unit seconds). Rotational velocity is the vector quantity...

change in its rotation rate over the course of a complete orbit. In the case where a tidally locked body possesses synchronous rotation, the object takes...

rotation period of Saturn had increased appreciably, to approximately 10h 45m 45s ± 36s. An estimate of Saturn's rotation (as an indicated rotation rate...