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A satellite orbit that passes over polar regions, especially one whose plane contains the polar axis:‘an amateur radio satellite in a polar orbit’[mass noun] ‘the agency maintains four satellites, two in polar orbit’
- ‘When declared operational in 1964, Transit consisted of five satellites in offset polar orbits circling the Earth at an altitude of about 670 miles.’
- ‘By 2001 those satellites (flying in polar orbits and geosynchronous orbits) were equipped not only with cameras but with a range of sensors that employed the latest infrared technology.’
- ‘Only about 2% of the time is that satellite ever over something even remotely interesting - it's a very, very low yield - and you only come over that spot with a satellite once a day if it's in a polar orbit.’
- ‘Depending on your stretch of that definition, a satellite in a perfect polar orbit would pass over each pole once per day and might be called ‘geosynchronous’, but like the time of day at the poles the terminology becomes ambiguous.’
- ‘He said the experimental satellite will weigh 35 kg and will be placed in a polar orbit, orbiting the earth from pole to pole, at an altitude of 600 to 800 km.’
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