Definition of perigee in English:

perigee

noun ˈpɛrɪdʒiːˈpɛrəˌdʒi

Astronomy

The point in the orbit of the moon or a satellite at which it is nearest to the earth.
The opposite of apogee
Example sentencesExamples
- The most favourable conditions for a total eclipse are when the Moon is at its perigee, Earth is farthest from the Sun (around July) and when the Sun is observed near zenith.
- Contrasting full moons seen near perigee and apogee indicate how much the apparent size of the Moon varies each month.
- Whereas the synodic period is 29.53 days, it takes 27.5 days for the moon to move in its elliptical orbit from perigee to perigee.
- Its low perigee meant that the orbit would degrade rapidly due to atmospheric friction.
- But the orbit is elliptical, and when the Moon is near perigee (closest to Earth), it moves along its orbit more swiftly than it does when it is near apogee (farthest from Earth).

Origin

Late 16th century: from French périgée, via modern Latin from Greek perigeion 'close round the earth', from peri- 'around' + gē 'earth'.

Definition of perigee in US English:

perigee

nounˈpɛrəˌdʒiˈperəˌjē

Astronomy

The point in the orbit of the moon or a satellite at which it is nearest to the earth.
The opposite of apogee
Example sentencesExamples
- Whereas the synodic period is 29.53 days, it takes 27.5 days for the moon to move in its elliptical orbit from perigee to perigee.
- Contrasting full moons seen near perigee and apogee indicate how much the apparent size of the Moon varies each month.
- The most favourable conditions for a total eclipse are when the Moon is at its perigee, Earth is farthest from the Sun (around July) and when the Sun is observed near zenith.
- But the orbit is elliptical, and when the Moon is near perigee (closest to Earth), it moves along its orbit more swiftly than it does when it is near apogee (farthest from Earth).
- Its low perigee meant that the orbit would degrade rapidly due to atmospheric friction.

Origin

Late 16th century: from French périgée, via modern Latin from Greek perigeion ‘close round the earth’, from peri- ‘around’ + gē ‘earth’.

单词	perigee
释义	Definition of perigee in English: perigee noun ˈpɛrɪdʒiːˈpɛrəˌdʒi Astronomy The point in the orbit of the moon or a satellite at which it is nearest to the earth. The opposite of apogee Example sentencesExamples The most favourable conditions for a total eclipse are when the Moon is at its perigee, Earth is farthest from the Sun (around July) and when the Sun is observed near zenith. Contrasting full moons seen near perigee and apogee indicate how much the apparent size of the Moon varies each month. Whereas the synodic period is 29.53 days, it takes 27.5 days for the moon to move in its elliptical orbit from perigee to perigee. Its low perigee meant that the orbit would degrade rapidly due to atmospheric friction. But the orbit is elliptical, and when the Moon is near perigee (closest to Earth), it moves along its orbit more swiftly than it does when it is near apogee (farthest from Earth). Origin Late 16th century: from French périgée, via modern Latin from Greek perigeion 'close round the earth', from peri- 'around' + gē 'earth'. Definition of perigee in US English: perigee nounˈpɛrəˌdʒiˈperəˌjē Astronomy The point in the orbit of the moon or a satellite at which it is nearest to the earth. The opposite of apogee Example sentencesExamples Whereas the synodic period is 29.53 days, it takes 27.5 days for the moon to move in its elliptical orbit from perigee to perigee. Contrasting full moons seen near perigee and apogee indicate how much the apparent size of the Moon varies each month. The most favourable conditions for a total eclipse are when the Moon is at its perigee, Earth is farthest from the Sun (around July) and when the Sun is observed near zenith. But the orbit is elliptical, and when the Moon is near perigee (closest to Earth), it moves along its orbit more swiftly than it does when it is near apogee (farthest from Earth). Its low perigee meant that the orbit would degrade rapidly due to atmospheric friction. Origin Late 16th century: from French périgée, via modern Latin from Greek perigeion ‘close round the earth’, from peri- ‘around’ + gē ‘earth’.
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