Earth's orbit - Wikipedia, the free encyclopedia
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In astronomy, The Earth's Orbit involves the Earth orbiting the Sun, at an average distance of about 150 million kilometers, every 365.242199 mean solar days (1 sidereal year). This motion gives an ...
en.wikipedia.org/wiki/Earth's_orbit
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Geocentric orbit - Wikipedia, the free encyclopedia
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A geocentric orbit involves any object orbiting the Earth, such as the Moon or artificial satellites. Currently there are approximately 2,465 artificial satellites orbiting the Earth and 6,216 piece...
en.wikipedia.org/wiki/Geocentric_orbit
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Gravity supplies the necessary centripetal force to hold a satellite in orbit about the earth. The circular orbit is a special case since orbits are generally ellipses, or hyperbolas in the case of objects which are merely deflected by the planet's gravity but not captured.
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hyperphysics.phy-astr.gsu.edu/hbase/orbv.html
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Communication satellites are most valuable when they stay above the same point on the earth, in what are called "geostationary orbits". This occurs when the orbital period is 24 hours.
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hyperphysics.phy-astr.gsu.edu/hbase/orbv3.html
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Enter the designation or name of any asteroid or comet, and a 3D orbit visualization tool will appear for that object. Make sure you have Java enabled on your browser. You can also select from the list of Potentially Hazardous Asteroids provided below. ... Near Earth Object Program...
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neo.jpl.nasa.gov/orbits/
neo.jpl.nasa.gov/orbits/
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; The earth goes around the sun once each year while meanwhile rotating about its axis once each day. ... A sidereal day is the time from starrise to starrise. A solar day is the time from sunrise to sunrise.
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zebu.uoregon.edu/~soper/Orbits/earthorbit.html
zebu.uoregon.edu/~soper/Orbits/earthorbit.html
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; The Earth with its Sun. Click on image for full size (127K GIF); Courtesy of Aris Multimedia Entertainment, Inc. 1994 ... Like all planets in our solar system, the Earth is in an elliptical orbit around our Sun. In Earth's case, its orbit is nearly circular, so that the difference between Earth's farthest point from...
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www.windows.ucar.edu/tour/link=/the_universe/uts/earth3...
www.windows.ucar.edu/tour/link=/the_universe/uts/earth3.html
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For more instructions on how to view satellite orbits please read here. ... eoPortal earth observation remote sensing satellite tracking path orbit...
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orbits.eoportal.org/orbits.html
orbits.eoportal.org/orbits.html
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Current information about climate and the environment. ... Just as different seats in a theater provide different perspectives on a performance, different Earth orbits give satellites varying perspectives, each valuable for different reasons.
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earthobservatory.nasa.gov/Features/OrbitsCatalog/
earthobservatory.nasa.gov/Features/OrbitsCatalog/
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