apsis

Also known as apsides, apse

lang=zxx|thumb|345px|The apsides refer to the farthest (2) and nearest (3) points reached by an orbiting planetary-mass object|planetary body (2 and 3) with respect to a primary, or host, body (1) An apsis ( (third declension); ) is the farthest or nearest point in the orbit of a planetary body about its primary body. The line of apsides (also called apse line, or major axis of the orbit) is the line connecting the two extreme values.

AI overview

An apsis is either the farthest or nearest point that an orbiting body—like a planet or moon—reaches as it travels around its primary body, such as a star or planet. The two apsides of an orbit are connected by a line called the line of apsides, which represents the longest diameter of the orbit.

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described by source: Encyclopædia Britannica 11th edition
facet of: astronomy
on focus list of Wikimedia project: Wikipedia:Vital articles/Level/4
has contributing factor: orbital elements

Sources (1)

it.wikipedia.org

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Article · Português

Apside (em grego: ἁψίς; plural apsides, grego: ἁψῖδες) é um ponto extremo na órbita de um objeto astronômico. Em suma, é o ponto extremo da órbita do eixo maior da elipse, em que um planeta ou satélite se acha mais perto ou mais longe do centro. A palavra vem através do latim e do grego e é cognato com abside. Para as órbitas elípticas em torno de um corpo maior, existem duas apsides, nomeadas com os prefixos peri- (de περί (peri), que significa "próximo") e ap- ou apo- (de ἀπ (ό) (ap (ó)), que significa "longe de") adicionado a uma referência à coisa que está sendo orbitada.

Abstract from DBpedia / Wikipedia · CC BY-SA

apsis

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Article · Português

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