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equinoctial point

/ˌiːkwɪˈnɒkʃəl pɔɪnt/

Traduction: L'un des deux points de la sphère céleste où l'équateur céleste croise l'écliptique, correspondant aux positions du Soleil aux équinoxes de printemps et d'automne.

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phrase

/ˌiːkwɪˈnɒkʃəl pɔɪnt/C2formalscientific
  • frL'un des deux points de la sphère céleste où l'équateur céleste croise l'écliptique, correspondant aux positions du Soleil aux équinoxes de printemps et d'automne.

Either of the two points in the sky where the celestial equator intersects the ecliptic, marking the positions of the Sun at the vernal and autumnal equinoxes.

  1. Celestial intersectionC2formal

    Either of the two points in the sky where the celestial equator intersects the ecliptic, marking the positions of the Sun during the vernal and autumnal equinoxes.

    frpoint équinoxial

    • The Sun passes through the equinoctial point around March 20th each year.
    • Astronomers use the equinoctial point as a reference for celestial coordinates.
    • The equinoctial point shifts slowly over time due to precession.