about how far below a straight-line path does a satellite in close earth orbit fall in the first second of fall?
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Satellite Motion In order for a satellite to successfully orbit the Earth, it must travel a horizontal distance of 8000 meters before falling a vertical distance of 5 meters. A horizontally launched projectile falls a vertical distance of 5 meters in its first second of motion.
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- Most scientific satellites, including NASA’s Earth Observing System fleet, have a low Earth orbit. One way of classifying orbits is by altitude. Low Earth orbit starts just above the top of the atmosphere, while high Earth orbit begins about one tenth of the way to the moon.(NASA illustration by Robert Simmon). The height of the orbit, or distance between the satellite and Earth’s surface, determines how quickly the satellite moves around the Earth.ost scientific satellites, including NASA’s Earth Observing System fleet, have a low Earth orbit. One way of classifying orbits is by altitude. Low Earth orbit starts just above the top of the atmosphere, while high Earth orbit begins about one tenth of the way to the moon.
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- This special, high Earth orbit is called geosynchronous. A satellite in a circular geosynchronous orbit directly over the equator (eccentricity and inclination at zero) will have a geostationary orbit that does not move at all relative to the ground.It is always directly over the same place on the Earth’s surface. satellite at this height takes 12 hours to complete an orbit. As the satellite moves, the Earth rotates underneath it. In 24-hours, the satellite crosses over the same two spots on the equator every day. This orbit is consistent and highly predictable.
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Mathematics of Satellite Motion Note that the radius of a satellite's orbit can be found from the knowledge of the earth's radius and the height of the satellite above the earth. As shown in the diagram at the right, the radius of orbit for a satellite is equal to the sum of the earth's radius and the height above the earth. These two quantities can be added to yield the orbital radius.
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Geostationary orbit A geostationary orbit can only be achieved at an altitude very close to 35,786 km (22,236 mi) and directly above the equator. This equates to an orbital velocity of 3.07 km/s (1.91 mi/s) and an orbital period of 1,436 minutes, which equates to almost exactly one sidereal day (23.934461223 hours).
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- A low Earth orbit is normally at an altitude of less than 1000 km and could be as low as 160 km above the Earth. Satellites in this circular orbit travel at a speed of around 7.8 km per second. At this speed, a satellite takes approximately 90 minutes to circle the Earth. low Earth orbit is normally at an altitude of less than 1000 km and could be as low as 160 km above the Earth. Satellites in this circular orbit travel at a speed of around 7.8 km per second. At this speed, a satellite takes approximately 90 minutes to circle the Earth.
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What is difference between geostationary and geosynchronous sateelites? Relevance. Rating Newest Oldest. Best Answer: A geostationary orbit requires that the satellite be in an orbit directly above the equator and approximately 22 236 miles (35,786 km) above sea level. This orbit puts the satellite in a position where it is always directly above the same spot on the planet at all times.f such a satellite's orbit lies over the equator, it is called a geostationary satellite. The orbits of the satellites are known as the geosynchronous orbit and geostationary orbit. Source(s): wikipedia encyclopedia. amby · 10 years ago.
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- A polar-orbiting satellite, on the other hand, gets no help from Earth’s momentum, and so requires more energy to reach the same altitude. Satellites in low-inclination orbits can get an energy boost from the Earth’s rotation by being launched near the equator.
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- The semi-synchronous orbit is a near-circular orbit (low eccentricity) 26,560 kilometers from the center of the Earth (about 20,200 kilometers above the surface). A satellite at this height takes 12 hours to complete an orbit.
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Okefenokee Swamp Okefenokee Swamp. The Okefenokee Swamp is a shallow, 438,000-acre (1,770 km2), peat-filled wetland straddling the Georgia–Florida line in the United States. A majority of the swamp is protected by the Okefenokee National Wildlife Refuge and the Okefenokee Wilderness. The Okefenokee Swamp is considered to be one of the Seven Natural Wonders of Georgia. The Okefenokee is the largest blackwater swamp in North America.
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- A satellite in orbit around the Earth does not fall into the Earth because the force of Gravity between the satellite and Earth is exactly balanced by the centripetal reaction … force of the satellite constantly changing direction. Think of driving in a car in a straight line. Now, think about turning right.
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Navstar: GPS Satellite Network The orbits of GPS satellites are inclined to the Earth’s equator by about 55 degrees. The system is designed to ensure that at least four satellites are visible at least 15 degrees above the horizon at any given time anywhere in the world.
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- 1957: Sputnik satellite blasts into space. A Russian satellite has been launched into space - the first man-made object ever to leave the Earth's atmosphere. The Russian news agency, Tass, said the satellite Sputnik was now 560 miles (900 kilometres) above the Earth and circling it every hour-and-a-half. Scientists predict the metal sphere will eventually burn up in the atmosphere but they hope it will send important data back to Earth before doing so.
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- It should now be apparent that only satellites which orbit with a period equal to the earth's rotational period and with zero eccentricity and inclination can be geostationary satellites. As such, there is only one geostationary orbit—a belt circling the earth's equator at an altitude of roughly 35,786 kilometers.n general terms, it is a special orbit for which any satellite in that orbit will appear to hover stationary over a point on the earth's surface. Unlike all other classes of orbits, however, where there can be a family of orbits, there is only one geostationary orbit.
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Satellite Coverages and Orbits Geostationary satellites orbit in the earth's equatorial plane at a height of 38,500 km. At this height, the satellite's orbital period matches the rotation of the Earth, so the satellite seems to stay stationary over the same point on the equator.Since the field of view of a satellite in geostationary orbit is fixed, it always views the same geographical area, day or night.eostationary orbits are circular orbits that are orientated in the plane of the Earth's equator. By placing the satellite at an altitude where it's orbital period exactly matches the rotation of the earth (35,800 km), the satellite appears to hover over one spot on the Earth's equator.
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What is a Satellite? Most satellites also work in this zone. Geostationary orbit is the best spot for communications satellites to use, however. This is a zone above Earth's equator at an altitude of 35,786 km (22,236 mi).
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- There are essentially three types of Earth orbits: high Earth orbit, medium Earth orbit, and low Earth orbit. Many weather and some communications satellites tend to have a high Earth orbit, farthest away from the surface. satellite that orbits directly above the equator has zero inclination. If a satellite orbits from the north pole (geographic, not magnetic) to the south pole, its inclination is 90 degrees. Orbital inclination is the angle between the plane of an orbit and the equator.
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Intro to Space Activities Orbits of the Earth. Low Earth Orbit (LEO) is commonly accepted as between 124 and 1,240 miles above the Earth’s surface. Spacecraft in LEO make one complete revolution of the Earth in about 90 minutes (the “orbital period”). The International Space Station (ISS) orbits between 198.6 and 215.5 miles above the Earth’s surface. The Space Shuttle and Hubble Space Telescope also operate in this region. The proximity to the Earth’s surface provides a high level of detail and ability to detect distinct objects (known as “spatial resolution”).
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- HISTORICAL SPACE FREQUENCIES. The first satellite to orbit the Earth was Sputnik 1, launched by the Soviets in October 1957. It carried two radio beacons on frequencies of 20.005 and 40.01 MHz. The Soviets continued to use frequencies around 20 MHz and even some around 15 MHz for many subsequent missions.
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How Satellites Work You can also classify satellites based on their height above Earth's surface. Using this scheme, there are three categories [source: Riebeek 1  ]: Low-Earth orbits (LEO) — LEO satellites occupy a region of space from about 111 miles (180 kilometers) to 1,243 miles (2,000 kilometers) above Earth.olar-orbiting satellites also pass over the planet's poles on each revolution, although their orbits are far less elliptical. The polar orbit remains fixed in space as Earth rotates inside the orbit. As a result, much of Earth passes under a satellite in a polar orbit.
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Sub-orbital spaceflight The derivative of Δv also goes to zero here. So if d = 19 000 km, the length of the minimum-delta-v trajectory will be about 19 500 km, but it will take only a few seconds less time than the trajectory for d = 20 000 km (for which the trajectory is 20 000 km long).
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Types of Orbits We can use Kepler's third law to figure out how far out a satellite must be to spend all its time over one part of Earth. The answer is that a satellite has to be placed approximately 22,000 miles (36,000 km) away from the surface of the Earth in order to remain in a GEO orbit.erigee is the closest point and apogee is the farthest (for Earth-for the Sun we say aphelion and perihelion). If the orbit is very elliptical, the satellite will spend most of its time near apogee (the furthest point in its orbit) where it moves very slowly.
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- A satellite in low orbit typically about 800 km from the Earth is exposed to an immense gravitational pull and has to move at considerable speed in order to generate a corresponding centrifugal force. There is a direct connection between the distance from the Earth and the orbital velocity of the satellite. At a distance of 36,000 km, the orbiting time is 24 hours, corresponding to the Earth's rotation time. At this distance, a satellite above the Equator will be stationary in relation to the Earth.
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- To orbit the Earth you have to go FAST, for low orbits about 17,500 mph. If you launch to the east you get boost from the Earth's rotation. For launches near the equator that boost is about 1,000 mph. My favorite bit of evidence is a bit subtle.
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Low Earth orbit Due to atmospheric drag, satellites do not usually orbit below 300 km. Objects in LEO orbit Earth between the denser part of the atmosphere and below the inner Van Allen radiation belt. The orbital velocity needed to maintain a stable low Earth orbit is about 7.8 km/s, but reduces with increased orbital altitude.
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Satellite Orbit Types & Definitions For a very low orbit of around 100 miles a velocity of about 17500 miles per hour is needed and this means that the satellite will orbit the Earth in about 90 minutes. At an altitude of 22 000 miles a velocity of just less than 7000 miles per hour is needed giving an orbit time of about 24 hours.or a very low orbit of around 100 miles a velocity of about 17500 miles per hour is needed and this means that the satellite will orbit the Earth in about 90 minutes. At an altitude of 22 000 miles a velocity of just less than 7000 miles per hour is needed giving an orbit time of about 24 hours.