2011-01-14

Perigee

Perigee is the point of an orbit closest to the central body, so for a satellite in orbit around Earth, its the closest approach to Earth (the central body). The 'gee' part is related to 'geo' meaning Earth, so when the central body is somewhere else (say, Mars), perigee is usually known by a more general term 'periapsis'.


For a good tutorial about orbital mechanics, see the Basics of Space Flight.


New meanings for either perigee or periapsis are welcome as comments.

4 comments:

  1. As we all know, Congee is a Chinese rice gruel eaten for breakfast. A Perigee is the same type of rice gruel but you can have it as a side dish at any time of the day.

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  2. feeling of relief as you wake up in the correct train station, instead of the next one down the line.

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  3. An onomatopoeic word describing the maximum bend allowed in a bendy bus before the middle section "perigees" apart.

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  4. An embarrassingly noisy internal bowel movement.

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