sub-synchronous satellite
51COROT — Model of the Corot satellite General information NSSDC ID 2006 063A Organization …
52Orbite héliosynchrone — Le plan d orbite d un satellite artificiel héliosynchrone se présente toute l année sous le même angle par rapport au soleil. Un satellite héliosynchrone repasse quotidiennement au dessus d un lieu à une heure solaire identique …
53Orbit 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… …
54NTSC — This article is about the television system. For the Indonesian government agency, see National Transportation Safety Committee. Television encoding systems by nation; countries using the NTSC system are shown in green. NTSC, named for the… …
55Momentum exchange tether — Momentum Exchange Tethers is one of many applications for space tethers. This sub set represents an entire area of research using a spinning conductive and/or non conductive tether to throw spacecraft up or down in orbit (like a sling), thereby… …
56Orbital inclination change — is an orbital maneuver aimed at changing the inclination of an orbiting body s orbit. This maneuver is also known as an orbital plane change as the plane of the orbit is tipped. This maneuver requires a change in the orbital velocity vector… …
57Orbit 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… …
58Space-Based Radar — refers to space borne radar systems that may have any of a variety of purposes. A number of earth observing radar satellites, such as RadarSat, have employed synthetic aperture radar (SAR) to obtain terrain and land cover information about the… …
59Telecommunications industry in the People's Republic of China — This article discusses the telecommunications industry in mainland China. For Hong Kong and Macau, see Communications in Hong Kong and Communications in Macau. The telecommunications industry in China is dominated by three state run businesses:… …
60Magnetometer — A magnetometer is a measuring instrument used to measure the strength or direction of a magnetic field either produced in the laboratory or existing in nature. Some countries such as the USA, Canada and Australia classify the more sensitive… …
