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A polar orbit (as opposed to an equatorial orbit) passes over the poles, north and south. A low orbit is relatively close to the Earth (or other object being orbited), it might be a few hundred miles up.
Wiki User
∙ 14y ago
Wiki User
∙ 14y agoThat's a satellite whose orbit is inclined to the equator by 90 degrees, so that it passes over the earth's
North and South Poles.
The way orbits work, the center of the orbit has to be the center of the earth. So if a satellite passes
over one pole, it has to pass over both of them.
Wiki User
∙ 14y agoNo. Satellites in polar orbits appear to move quickly across the sky, and a communications satellite should stay still so that the dish antennas can stay focused on it.
Satellites for communications like TV or telephone are in geosynchronous orbits over the equator, so that they appear to hang motionless in the sky. In reality, the satellite orbits at the same speed that the Earth spins, so they are moving, but perfectly "keeping up" with the Earth turning.
Polar orbits are used for photographic satellites so that they spin quickly while the Earth turns underneath them. This allows one satellite to see every spot on the Earth every day or two.
Wiki User
∙ 11y agoI'm guessing that you mean "low polar orbit". A "low" orbit is one from about 150 miles up (which is the minimum altitude for a "stable" orbit) to about 900 miles, and a "polar" orbit is one that passes over, or nearly so, the north and south poles.
Polar orbits have the advantage that the Earth is continually spinning while the satellite passes over. So each pass covers a different area of the Earth. One writer described a low polar orbit for an observation satellite as a "ball of twine search"; given a long enough time, the satellite would pass over every spot on the Earth.
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Does the satellite requires power to revolve around the earth?
No. Once the satellite is placed in orbit, its momentum will keep it orbiting along its original path - more of less. "More or less" means: 1. The satellite may need minute adjustments to its position, so that it can photograph its intended targets (stars/planets, the earth), or can keep in contact with its intended radio/television/mobile phone services, and 2. A satellite's orbit will slowly decay, and the satellite would eventually come into the outer atmosphere, begin to slow down, and burn up as its orbit brought it into denser air. For both these reasons, satellites may use small "positioning" thrusters to steer and to regain orbital speed.
What is the best TV satellite system for a motorhome?
It depends on what kind of motorhome and when you want to watch Dish TV. If you will be mobile and wanting television, you will need a self adjusting satellite dish; there are also stationary satellite dishes available. As far as a satellite system, I prefer Dish TV because of the price, channel selection and technology. Dish Network also has a affordable portable satellite dish that does not attach to your motor-home called the Dish Tailgater.
Why satellites are placed at an altitude of 36000 km is there any reason for such an long altitude pls answer thanks in advance?
The closer to the Earth, the faster the orbit; this is basic math, as determined Johannes Kepler centuries ago. The higher the orbit, the slower the satellite goes. IN 1947, science fiction writer Arthur C. Clarke wrote an article and a story based on the curious coincidence that if a satellite were placed in an equatorial orbit 23,000 miles (or 36,000 km) up, the satellite would orbit the Earth at precisely the speed that the Earth itself turns. The satellite would appear to be suspended, motionless, in the sky! Since an Earth-based antenna would not need any rotors or pointing mechanisms to track an unmoving satellite, the antenna could be made larger - MUCH larger. We now call that orbit "geo-synchronous", and that's where we park communications satellites, and TV satellites. It didn't occur to Arthur Clarke to patent his invention; and because he did not, the satellite communications revolution proceeded unimpaired by patent lawsuits.
What was the satellite TV network?
Orbita (1967) - first national network of satellite tv which was created in Soviet Union Anik 1 (1972) - first domestic north American satellite to carry television in Canada ATS-6 (1974) - world's first experimental educational and direct broadcast satellite Ekran (1976) - the first soviet geostationary satellite to carry direct-to-home television
What is a geostation satellite?
Geostationary satellites orbit high above the surface of the earth at about 35,000km, directly above the equator. The take the same time to complete one orbit as the earths surface as it rotates meaning it is always above the same point on earth. They are used for TV and telephone signals as well as weather imagery, among other things. A satellites period, the time it takes it to go around the earth, is determined, in part, by its altitude. The further away it is then the longer it will take. You can calculate an altitude where it will take just one day to make an orbit. If this is done then though the satellite orbits the earth it appears to be stationary above one point of the earth. This orbit must be above, or very near to, the equator. For the earth this altitude is approximately 36,000 km (22,000 miles)
Why a polar orbit is not suitable for satellite television?
it is too cold and there is no power lines to get signal
How satellite pictures of earth are made and transmitted?
Satellite pictures of Earth are taken by a camera mounted on a satellite in orbit, high above Earth's atmosphere. They are transmitted wirelessly over satellite signals, much like satellite TV.
What is the tv satellites orbit called?
The tv satellites orbit called is a geo stationery.
Where is direct tv main satellite in orbit?
I believe it is 61.5. It also depends on your programming selection.
What happens with satellite TV when there is a sun outage?
The Sun is the prime energy source for the planet earth. It burns and gives the planet light every day. The sun never goes out, but at certain times during the orbit of the satellite, the sun will affect how the satellite transmits. This is called a "sun outage" Sometimes, the sun will release large plasma masses called Coronal Mass Ejections, and these events may disrupt satellite TV. Satellite TV interference is common due to solar radiation, solar wind, and CMEs.
Do all satellites orbit the same direction?
No, all satellites do not orbit Earth at the same altitude. An good overview of this can be found on http://www.idirect.net/Company/Satellite-Basics/How-Satellite-Works.aspx. This overview reviews Low Earth Orbit, Medium Earth Orbit and Geostationary Orbits.
What is satellite dish?
A satellite dish is a parabolic television antenna that receives signals from communication satellites in orbit around the earth. Its sole function is to provide the television viewer with a wider variety of channels.
Who discovered the tv satellite?
Satellites for television weren't discovered. They were developed by scientists and engineers and launched into orbit using space rockets. The development of the Telstar satellite was taken on by companies in the US, Britain and France. The first television satellite was launched in 1962 and was used for transatlantic television links between broadcasters. Since then, hundreds of satellites have been launched into geo-stationary orbit to serve direct television broadcasts to homes.
Satellite of earth?
A satellite of earth that is not man made is the moon. There are many satellites that are man made that orbit the earth. These satellites are used for communication between Internet and television viewing.
Is a geo-stationary satellite useful?
If that translates as a geosynchronous satellite, then yes it is useful. This is a satellite which, once attaining high orbit, its speed is synchronized to the speed of the earth's orbit. This permits the satellite to remain in the same stationary position over a given portion of the earth's surface. These types of satellites are useful for communications such as weather and television etc. as there is no loss of signal. At least, that's the idea if one discounts a snowstorm or heavy rain and the tv goes out.
When did people get to watch Satellite TV?
1963 by using a geosynchronous communication satellite called the Syncom Watch satellilte tv with satellite tv tuner like TBS TV Tuners
What is a satellite that orbits the earth?
If by satellite you mean an object that orbits the earth, then the Moon is a satellite of the earth. There are thousands of other satellites put into orbit by both private and public organizations used for everything from GPS to communication and even you TV service.
