low-energy orbit

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• Low Earth orbit — An orbiting cannon ball showing various sub orbital and orbital possibilities …   Wikipedia

• Low energy transfers — Low energy transfers, or low energy trajectories, are routes in space which allow spacecraft to change orbits using very little fuel. These routes work in other systems, such as traveling between the satellites of Jupiter. The drawback of such… …   Wikipedia

• low Earth orbit — noun A satellite orbit around the Earth within the altitude range of 200 2000 km, in which a satellite can communicate with Earth with a small time lag and energy consumption. Abbreviation: LEO …   Wiktionary

• Array of Low Energy X-ray Imaging Sensors — The Array of Low Energy X ray Imaging Sensors (ALEXIS) X ray telescopes feature curved mirrors whose multilayer coatings reflect and focus low energy X rays or extreme ultraviolet light the way optical telescopes focus visible light. The… …   Wikipedia

• 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

• Orbit equation — In astrodynamics an orbit equation defines the path of orbiting body around central body relative to , without specifying position as a function of time. Under standard assumptions, a body moving under the influence of a force, directed to a… …   Wikipedia

• Orbit of the Moon — Not to be confused with Lunar orbit in the sense of a selenocentric orbit, that is, an orbit around the Moon The Moon completes its orbit around the Earth in approximately 27.3 days (a sidereal month). The Earth and Moon orbit about their… …   Wikipedia

• Orbit phasing — In astrodynamics orbit phasing is the adjustment of the time position of spacecraft along its orbit, usually described as adjusting the orbiting spacecraft s true anomaly. This is predominantly used in satellite positioning, especially if the… …   Wikipedia

• Energy level — A quantum mechanical system or particle that is bound that is, confined spatially can only take on certain discrete values of energy. This contrasts with classical particles, which can have any energy. These discrete values are called energy… …   Wikipedia

• Hohmann transfer orbit — In astronautics and aerospace engineering, the Hohmann transfer orbit is an orbital maneuver using two engine impulses which, under standard assumptions, move a spacecraft between two coplanar circular orbits. This maneuver was named after Walter …   Wikipedia

• Specific orbital energy — In the gravitational two body problem, the specific orbital energy (or vis viva energy) of two orbiting bodies is the constant sum of their mutual potential energy ( ) and their total kinetic energy ( ), divided by the reduced mass. According to… …   Wikipedia