dawn-dusk orbit

dawn-dusk orbit of RADARSAT-1

Dawn-dusk orbit of RADARSAT-1.

A dawn-dusk orbit is a type of sun-synchronous orbit that allows a satellite to be permanently bathed in sunlight. This allows the satellite to be powered almost entirely by its solar panels. RADARSAT-1, for example, travels in a dawn-dusk orbit with an altitude of 798 kilometers, period of 100.7 minutes, and inclination of 98.6°.