A satellite orbit where the orbital period is equal to, or multiples of, the Earth’s rotational period; i.e. making one, two, three, etc., orbits in a 24-hour period. Examples include geosynchronous (period equals Earth's rotation), semisynchronous (two orbits per day); and geostationary (geosynchronous orbit where satellite maintains a fixed position on the equator).

(chemistry, physics) an atomic or molecular orbital whose energy increases as its constituent atoms are brought closer together - thus generating a repulsive force that hinders bonding

The orbit of a satellite that is nearer the planet than it would be if it were in synchronous orbit

A highly elliptical orbit with an eccentricity of 0.74, inclination of 63.4 degrees, an argument of perigee of −90 degrees, and an orbital period of half a sidereal day, around the Earth.

Synonym of ring road

(space science) An orbit where spacecraft which have reached their end of life can be safely positioned to avoid colliding with other spacecraft or the Earth.

plural of orbital motorway

plural of orbital plane

plural of antibonding orbital

plural of atomic orbital