TERMIUM Plus®

The Government of Canada’s terminology and linguistic data bank.

SIDEREAL YEAR [2 records]

Filter results by subject field Alphabetical list of terms

Filter results by subject field

Alphabetical list of terms

Record 1 2005-07-20

English

Subject field(s)
  • Chronology
  • The Earth (Astronomy)
DEF

Period of the earth's revolution about the sun with respect to the stars.

CONT

The sidereal year is the orbital period of Earth. A sidereal year equals 365.2564 mean solar days. The sidereal year is 20 minutes and 24 seconds longer than the tropical year.

French

Domaine(s)
  • Chronologie
  • Terre (Astronomie)
DEF

Période de révolution sidérale de la Terre autour du Soleil, environ : 365,25636 jours.

CONT

Si on prend une direction fixe dans l'espace, la Terre mettra 365 jours 6 h 9 m 10 s pour revenir dans cette même direction. On appelle cette durée l'année sidérale. [...] Notre calendrier (grégorien) a adopté l'année tropique parce qu'elle fait revenir les saisons à la même date chaque année (calendrier solaire). Le calendrier chinois utilise l'année sidérale parce qu'il se cale sur le mouvement des astres dans le zodiaque (par rapport aux étoiles fixes).

OBS

L'année sidérale est plus longue que l'année tropique d'une vingtaine de minutes, par suite de la précession des équinoxes.

Spanish

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Record 2 2005-07-20

English

Subject field(s)
  • Chronology
  • The Sun (Astronomy)
DEF

... the time for the Sun to return to the same position in respect to the stars of the celestial sphere.

CONT

The Sun appears to move with respect to the distant stars about 1 degree eastward per day, and makes a circuit of the sky from a particular star back to the same star in a sidereal year (365.25 mean solar days).

French

Domaine(s)
  • Chronologie
  • Soleil (Astronomie)
DEF

Temps que met le centre du Soleil pour revenir occuper le même point du ciel.

Spanish

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