1. A closed path in space where an object revolves around a celestial body at a constant distance, maintaining a circular shape
The satellite maintains a circular orbit around Earth at an altitude of 400 kilometers.
O satélite mantém uma órbita circular ao redor da Terra a uma altitude de 400 quilômetros.
2. In physics and astronomy, an orbit where the orbital velocity and gravitational force are balanced to keep the object equidistant from the center of the celestial body
A perfectly circular orbit is rare in nature; most orbits are slightly elliptical.
Uma órbita perfeitamente circular é rara na natureza; a maioria das órbitas é ligeiramente elíptica.