PERIGEUM Meaning and
Definition
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Perigeum is a noun that refers to a significant point in the orbit of a celestial body, specifically the point at which an object orbiting the Earth, such as the Moon or a satellite, is nearest to the Earth.
Derived from the Greek words peri, meaning "near," and gaia, meaning "Earth," perigeum signifies the closest approach of an object to our planet during its elliptical orbit. This term is most commonly used in the context of the Moon's orbit, denoting the specific moment when the Moon is closest to the Earth.
The perigeum is of great interest to astronomers and space scientists as it affects various phenomena. For instance, during a perigeum, the Moon appears larger and brighter in the night sky, a phenomenon known as a supermoon. Additionally, the gravitational forces between the Moon and Earth are enhanced during this point, leading to stronger tides, known as perigean tides. Scientists also analyze the perigeum to calculate the distance between celestial objects accurately and study their orbital mechanics.
Understanding the characteristics and timing of perigeum is crucial for space missions, satellite launches, and astronomical observations. By calculating perigean distances and monitoring perigeum events, scientists gain vital insights into the dynamics of celestial bodies and predict various astronomical phenomena occurring during these close approaches.
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That point in the orbit of the moon, or of a planet, which is nearest to the earth; opposed to apogee.
Etymological and pronouncing dictionary of the English language. By Stormonth, James, Phelp, P. H. Published 1874.
Common Misspellings for PERIGEUM
Etymology of PERIGEUM
The word "Perigeum" comes from the combination of two Greek words: "peri" meaning "near" or "around", and "ge" or "geon" meaning "earth" or "planet". In Greek astronomy, the term "Perigeum" refers to the point in the orbit of a celestial body (such as the Moon or a satellite) where it is closest to the Earth. This word has been adopted and used in various scientific fields to indicate similar concepts.
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