earth-synchronous orbit

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• Synchronous orbit — A synchronous orbit is an orbit in which an orbiting body (usually a satellite) has a period equal to the average rotational period of the body being orbited (usually a planet), and in the same direction of rotation as that body.PropertiesA… …   Wikipedia

• synchronous orbit — noun (Military) 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… …   Wiktionary

• Sun-synchronous orbit — Diagram showing the orientation of a Sun synchronous orbit (green) in four points of the year. A non sun synchronous orbit (magenta) is also shown for reference A Sun synchronous orbit (sometimes called a heliosynchronous orbit) is a geocentric… …   Wikipedia

• Semi-synchronous orbit — Semi Synchronous Orbit: An orbit with approximately a 12 hour period. A circular Semi Synchronous Orbit is at an altitude of approximately 20,200 km. [cite paper | title=NASA Technical Standard 8719.14 (draft) | publisher = NASA Orbital Debris… …   Wikipedia

• synchronous orbit — A satellite orbit where the orbital period is equal to, or multiples of, the Earth …   Military dictionary

• Orbit — This article is about orbits in celestial mechanics, due to gravity. For other uses, see Orbit (disambiguation). A satellite orbiting the Earth has a tangential velocity and an inward acceleration …   Wikipedia

• Earth Sciences — ▪ 2009 Introduction Geology and Geochemistry       The theme of the 33rd International Geological Congress, which was held in Norway in August 2008, was “Earth System Science: Foundation for Sustainable Development.” It was attended by nearly… …   Universalium

• Earth observation satellite — An Earth observation satellite, ERS 2 Earth observation satellites are satellites specifically designed to observe Earth from orbit, similar to reconnaissance satellites but intended for non military uses such as environmental monitoring,… …   Wikipedia

• Earth satellite — ▪ instrument  man made object launched into a temporary or permanent orbit around the Earth. Spacecraft of this type may be either manned or unmanned, the latter being the most common.       The idea of an artificial satellite in orbital flight… …   Universalium

• Synchronous rotation — Due to synchronous rotation of their moon, the inhabitants of the central body will never be able to see its side marked with green. In astronomy, synchronous rotation is a planetological term describing a body orbiting another, where the… …   Wikipedia

• synchronous satellite — synchronous satellite, an artificial satellite whose orbit is synchronous with the rotation of the earth on its axis. It orbits the earth once every 24 hours at a fixed altitude above the equator, and thus appears to be stationary; geostationary… …   Useful english dictionary