When a satellite is closest to Earth, its position is called perigee. The term perigee is used in astronomy to describe the point in an object's orbit where it is closest to the Earth. This is in contrast to apogee, which is the point in the orbit where the object is farthest from the Earth. Satellites orbiting the Earth follow an elliptical path, meaning their distance from the Earth varies throughout their orbit. When a satellite reaches its perigee, it is at its closest point to our planet. This is an important concept to understand when studying satellite orbits and trajectories. Understanding the perigee of a satellite is crucial for satellite operators and astronomers. It helps them predict the satellite's behavior and plan for maneuvers or adjustments to its orbit if necessary. By knowing when a satellite will be at its perigee, operators can optimize its performance and ensure it remains in a stable orbit. For more information on satellite orbits and perigee, you can visit websites such as [NASA's Satellite Page](https://www.nasa.gov/mission_pages/satellite). NASA provides a wealth of information on satellites, their orbits, and their role in space exploration. You can learn more about perigee and other important concepts related to satellites by exploring the resources available on their website. In conclusion, when a satellite is closest to Earth, its position is called perigee. Understanding the concept of perigee is essential for anyone studying satellites or working with them in any capacity. By knowing when a satellite will be at its perigee, operators can make informed decisions about its orbit and ensure it functions optimally. Visit NASA's website for more information on satellites and their orbits to deepen your understanding of this fascinating subject.

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