Multiple choice

In which of the following types of orbit is the Iridium satellite constellation found?

  1. Low Earth orbit

  2. Medium Earth orbit

  3. Geosynchronous orbit

  4. High Earth orbit
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A Correct answer
Explanation

A low Earth orbit (LEO) is generally defined as an orbit below an altitude of approximately 2000 kilometres (1200 mi). The Iridium satellite constellation is a large group of satellites providing voice and data coverage to satellite phones, pagers and integrated transceivers over Earth's entire surface. The constellation consists of 66 active satellites in orbit and additional spare satellites to serve in case of failure. Satellites are in low Earth orbit at a height of approximately 485 mi (781 km).

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