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TEMPS NEWCOMB [1 record]

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Alphabetical list of terms

Record 1 1977-09-09

English

Subject field(s)
  • Astronomy
OBS

[Ephemeris time is] time based upon a definite year (1900) and used to calculate times of astronomical phenomena. It is necessitated by the slowing and non-uniform rotation of the earth.

French

Domaine(s)
  • Astronomie
OBS

(...) on utilise en astronomie deux systèmes pour évaluer le temps: le temps irrégulier, fourni par des observations et déterminé par la rotation réelle de la Terre, et le temps régulier, argument appliqué pour le calcul des éphémérides des planètes et défini d'après les mouvements de la Lune et des planètes. Le temps régulier s'appelle "temps de Newcomb" ou "temps des éphémérides".

Spanish

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