perihelio

perihelio

The point in the Earth's orbit when it is closest to the sun (147. 5 million km). Perihelion occurs on the 3rd or 4th of January. The opposite of Aphelion.

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Industry/Domain: Biology
Category: Ecology
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Related terms

argumento del perihelio (ω, longitud del perihelio)

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Angular distance (measured in the plane of the object's orbit and in the direction of its motion) from the ascending node to the perihelion point.

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