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Geosynchronous orbit A geosynchronous orbit may be defined as one with an orbital period (the time needed to orbit once around the Earth) that matches the rotation rate of the Earth. A geostationary orbit is a special case of a geosynchronous orbit. A satellite is in a geostationary orbit when it appears stationary from the point of view of an observer on the Earth's surface. www.centennialofflight.gov /essay/Dictionary/GEO_ORBIT/DI146.htm   (163 words)

Space Elevators and Tether Systems Geosynchronous orbit is special since this is the distance at which an object orbiting the earth would have to travel around the earth at the same rate the earth rotates, the point at which a geosynchronous object’s centripetal force exactly cancels out its gravitational force. If an object is within geosynchronous orbit and is moving around the earth with the same period (time per orbit) as the period of rotation of the earth then its gravitational force would exceed its centripetal force and pull it down. On the space leg of the trip to geosynchronous orbit high speed would be desirable so as to shorten the journey, however during the short atmospheric leg, slow speeds would reduce the lose of energy to air resistance, or even render this effect negligible. www.jessekirkham.com /spaceelevators.htm   (6985 words)

Geosynchronous Orbit   (Site not responding. Last check: 2007-10-25) Geosynchronous (adj.): geo-, earth and synchronous, going on at the same rate and exactly together. For a satellite's orbit period to be one The Shuttle's orbit is always inclined to the equator by at least 28.5 degrees. liftoff.msfc.nasa.gov /academy/rocket_sci/satellites/geo-high.html   (173 words)

CelesTrak: "Basics of the Geostationary Orbit" While each satellite will complete its orbit in the same time it takes the earth to rotate once, it should be obvious that the geosynchronous satellite will move north and south of the equator during its orbit while the geostationary satellite will not. Orbits with non-zero eccentricity (i.e., elliptical rather than circular orbits) will result in drifts east and west as the satellite goes faster or slower at various points in its orbit. Since the geostationary orbital plane is not coincident with the plane of the earth's orbit (the ecliptic) or that of the moon's orbit, the gravitational attraction of the sun and the moon act to pull the geostationary satellites out of their equatorial orbit, gradually increasing each satellite's orbital inclination. celestrak.com /columns/v04n07   (1553 words)

Geosynchronous Orbit   (Site not responding. Last check: 2007-10-25) The original idea of geosynchronous communications satellites was published by the British science fiction writer Arthur C. Clarke in the early 50's. The idea of geosynchronous satellites is to find an orbit over the equator in which the satellite revolves around the earth at the same rate that the earth spins on its axis. Recalling the relationship between force and period of circular motion, the period, radius and mass of the satellite are related to the centripetal force pulling the satellite away from a straight path to a circular orbit. www.sfu.ca /phys/100/lectures/geosynch/Geosynch.html   (437 words)

Satellite TV Technical Information These satellites are in geosynchronous orbit, meaning that they rotate around the earth in the same direction as it is rotating, in order to stay directly above the area that they are broadcasting to. In order for the satellites to remain in orbit, there has to be a balance between the pull of the earth's gravity and the centripetal force of the satellite's orbit, which is pulling away from earth. This is possible by adjusting the altitude and orbiting velocity of the satellites. www.supersatelliteselection.com /satellite-tv-technical.htm   (338 words)

Physics Simulation and Java - Lecture 13B: Introduction to Java Networking Notice how much slower the satellite moves in a large orbit, and how much longer it takes to complete an orbit than when it is closer to the Earth. A mathematical relationship exists between the orbital period and the size of the orbit, i.e., the distance between the center of the Earth and the satellite. The relationship states that the square of the orbital period is proportional to the cube of the size of the orbit. www.particle.kth.se /~fmi/kurs/PhysicsSimulation/Lectures/13B   (232 words)

Sea Launch History page Now positioned in geosynchronous orbit, this satellite provides regional mobile telecommunications services to 100 countries in the Middle East, Europe, India, Africa and central Asia. The 5,177 kg (11,413 lb), Thuraya-2 communications satellite (Boeing 702 GEM spacecraft), again the heaviest commercial payload orbited to date, is designed to support Thuraya's regional mobile communications services to the populations of more than 100 countries in the Middle East, Europe, India, Africa and central Asia. Sea Launch delivered DIRECTV’s 6,080 kg (13,376 lb) Spaceway 1 satellite into geosynchronous transfer orbit, on its way to a final orbital position of 102.8 degrees West Longitude, completing the successful launch of the heaviest commercial satellite to date. www.sea-launch.com /history.htm   (1483 words)

Sea Launch Successfully Delivers Latest XM Radio Satellite To Orbit Over the coming weeks, the satellite will be maneuvered up to geostationary orbit where a series of in-orbit deployments and tests will be conducted to ensure that the satellite meets its specifications and is ready to begin operations for XM Satellite Radio, Inc., the Washington, D.C.-based provider of the nation's leading satellite radio service. The Block DM upper stage inserted the 5,193 kg (11,448 lbs.) spacecraft into geosynchronous transfer orbit, on its way to final orbital position of 115 degrees West Longitude. The XM-4 satellite was inserted directly into a geosynchronous transfer orbit, on its way to an orbital location for in-orbit testing prior to placement in its final orbital position at 115 degrees West Longitude. www.space-travel.com /reports/Sea_Launch_Successfully_Delivers_Latest_XM_Radio_Satellite_To_Orbit_999.html   (1038 words)

LIVE REAL TIME SATELLITE AND SPACE SHUTTLE TRACKING CHINA, BRAZIL LAUNCH REMOTE SENSING SATELLITE - A joint mission developed by China and Brazil was shot into an orbit circling Earth's poles to snap detailed images of the globe during an early Wednesday launch from China's northeastern space base. MOON ORBITER SUCCESSFULLY LAUNCHED FROM EARTH - A Japanese space probe bound for lunar orbit was launched early Friday on the first leg of a $480 million mission to search for answers to fundamental questions about the moon's enigmatic history. It will be the first time the country launches a rocket into space from its territory. www.n2yo.com   (598 words)

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