UNIVERSE
SATELLITESICY BODIES
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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once every 24 hours
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once every 10-11 hours
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once every week
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once every 4 weeks
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Detailed explanation-1: -Satellites in geostationary orbit (GEO) circle Earth above the equator from west to east following Earth’s rotation – taking 23 hours 56 minutes and 4 seconds – by travelling at exactly the same rate as Earth. This makes satellites in GEO appear to be ‘stationary’ over a fixed position.
Detailed explanation-2: -A geosynchronous satellite is a satellite that orbits the earth with an orbital period of 24 hours, thus matching the period of the earth’s rotational motion. A special class of geosynchronous satellites is a geostationary satellite.
Detailed explanation-3: -Certain orbital altitudes have special properties, like a geosynchronous orbit, in which a satellite travels around the Earth exactly once each day. The length of each red arrow in this diagram represents the distance traveled by a satellite in an hour. View animation. (NASA illustration by Robert Simmon.)
Detailed explanation-4: -The period of a geostationary satellite is a sidereal day not a solar day, and that’s why it too is 3.9 minutes shorter than a solar day.
Detailed explanation-5: -Definition: Geosynchronous satellite is placed in the geosynchronous orbit with an orbital period matching the Earth’s rotation period. These satellites take 24 hours to complete one rotation around the earth. However, the orbital plane for a typical geosynchronous satellite is generally not the equatorial plane.