Comets are in some cases known to have disintegrated during their perihelion passage, or at other points during their orbit.

During Mercury's orbit, its perihelion advances by a small amount each orbit, technically called perihelion precession.

Perihelion, on or around this date, when Earth is at its closest point to the Sun during its orbit.

Whatever happened, happened during our last orbit around the Moon.

A satellite that passes briefly overhead during its orbit may not be able to catch an arms deal in a village square or a convoy in the desert.

"Access was limited to brief linkup accomplished during our orbit in the Orotis system."

The term zenith is sometimes used to refer to the highest point reached by a celestial body during its apparent orbit around a given point of observation.

The term nadir can also be used to represent the lowest point reached by a celestial body during its apparent orbit around a given point of observation.

He detailed a theory to explain the anomalous movements of the moon, which appears to change speed during its orbit of the Earth.

In that way, the influence of different velocities during Earth's orbit around the sun can be observed.