PERIAPSIS

periapsis, point of periapsis

(noun) (astronomy) the point in an orbit closest to the body being orbited

Source: WordNet® 3.1


Etymology

Noun

periapsis (plural periapsides)

(astronomy) The point of a body's elliptical orbit about the system's centre of mass where the distance between the body and the centre of mass is at its minimum.

Usage notes

In the case of some particular celestial bodies, specialised terms are used.

Synonyms

• pericenter

Antonyms

• apoapsis

Source: Wiktionary



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Word of the Day

24 February 2025

ANOMALY

(noun) (astronomy) position of a planet as defined by its angular distance from its perihelion (as observed from the sun)


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Coffee Trivia

International Coffee Day (September 29) is an occasion to promote and celebrate coffee as a beverage, with events occurring in places across the world. A day to promote fair trade coffee and raise awareness for the coffee growers’ plight. Other countries celebrate this event on October 1.

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