Where is an object ''stationary'' relative to earth's surface moving fastest relative to space?

An object is considered "stationary" relative to Earth's surface when it is at rest with respect to the ground. However, due to Earth's rotation, this object is moving fastest relative to space at the equator. The rotational speed at the equator is about 1,670 kilometers per hour (1,040 miles per hour), which decreases as you move toward the poles, where the rotational speed is effectively zero. Thus, the maximum speed relative to space occurs at the equator.