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first point of Libra

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  • first point of Libra — The intersection of celestial equator and ecliptic passed by the sun in autumn in the northern hemisphere, now actually in Virgo • • • Main Entry: ↑Libra …   Useful english dictionary

  • first point of Libra — The point of intersection of the ecliptic and the celestial equator (equinoctial) when the sun is moving from the north to the south direction. It is denoted by the symbol λ. Also called autumnal equinox. See first point of Aries and ecliptic …   Aviation dictionary

  • first point of Capricornus — That point on the ecliptic occupied by the sun at the maximum southerly declination. Sometimes called the December solstice, the first point of Capricornus. The same as the winter solstice, the first point of Libra. The point of the intersection… …   Aviation dictionary

  • Autumnal point — Autumnal Au*tum nal, a. [L. auctumnalis, autumnalis: cf. F. automnal.] 1. Of, belonging to, or peculiar to, autumn; as, an autumnal tint; produced or gathered in autumn; as, autumnal fruits; flowering in autumn; as, an autumnal plant. [1913… …   The Collaborative International Dictionary of English

  • Libra — Sign Sign, n. [F. signe, L. signum; cf. AS. segen, segn, a sign, standard, banner, also fr. L. signum. Cf. {Ensign}, {Resign}, {Seal} a stamp, {Signal}, {Signet}.] That by which anything is made known or represented; that which furnishes… …   The Collaborative International Dictionary of English

  • Equinox — This article is about the astronomical event when the sun is at zenith over the Equator. For other uses, see Equinox (disambiguation). For the same event happening on other planets and setting up a celestial coordinate system, see Equinox… …   Wikipedia

  • Virgo (constellation) — Infobox Constellation name = Virgo abbreviation = Vir genitive = Virginis symbology = the Virgin RA = 13 dec = 0 areatotal = 1294 arearank = 2nd numbermainstars = 9, 15 numberbfstars = 96 numberstarsplanets = 8 numberbrightstars = 3… …   Wikipedia

  • Ecliptic — The ecliptic is the apparent path that the Sun traces out in the sky during the year. As it appears to move in the sky in relation to the stars, the apparent path aligns with the planets throughout the course of the year. More accurately, it is… …   Wikipedia

  • precession of the equinoxes — The slow westward motion of equinoctial points (the first point of Aries and the first point of Libra) along the ecliptic by about 50.26” of are each year. A full cycle of precession occupies about 25,800 years. The term is used in… …   Aviation dictionary

  • Reform of the Calendar —     Reform of the Calendar     † Catholic Encyclopedia ► Reform of the Calendar     For the measurement of time the most important units furnished by natural phenomena are the Day and the Year. In regard of both, it is convenient and usual to… …   Catholic encyclopedia

  • Autumnal — Au*tum nal, a. [L. auctumnalis, autumnalis: cf. F. automnal.] 1. Of, belonging to, or peculiar to, autumn; as, an autumnal tint; produced or gathered in autumn; as, autumnal fruits; flowering in autumn; as, an autumnal plant. [1913 Webster] Thick …   The Collaborative International Dictionary of English

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