astronomical determinations

astronomical determinations
астрономические определения

English-Russian cartography dictionary. 2013.

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  • Astronomical unit — This article is about unit of length. For the full system of units, see Astronomical system of units. 1 astronomical unit = SI units 149.60×10^6 km 149.60×10^9 m Astronomical units 4.8481 …   Wikipedia

  • astronomical unit (AU) — Length of the semimajor axis of Earth s orbit around the Sun, 92,955,808 mi (149,597,870 km), often defined simply as the average distance from Earth to the Sun. Direct measurement through the parallax method cannot be used for accurate… …   Universalium

  • List of the most distant astronomical objects — This article documents the farthest known astronomical objects, and the time periods in which they were so classified. Contents 1 List of most distant objects by type 2 Most distant astronomical object recordholders 3 List of most distant objects …   Wikipedia

  • Shanghai Astronomical Observatory — (SHAO), is an astronomical observatory located in Shanghai, China. It has a long history of astrometry, and also operates the Sheshan 25m radio telescope as part of the Chinese VLBI array and the EVN. It was formed in 1962 from the merger of the… …   Wikipedia

  • geoid — geoidal, adj. /jee oyd/, n. 1. an imaginary surface that coincides with mean sea level in the ocean and its extension through the continents. 2. the geometric figure formed by this surface, an ellipsoid flattened at the poles. [1880 85; < Gk… …   Universalium

  • star cluster — Astron. a number of stars of common origin held together as a group by gravitational attraction. Cf. globular cluster, open cluster, stellar association. * * * ▪ astronomy Introduction  either of two general types of stellar assemblages held… …   Universalium

  • Crucifixion eclipse — The phrase Crucifixion eclipse refers to a three hour period of daytime darkness that was reported by the synoptic gospels of the Christian Bible to have occurred during the Crucifixion of Jesus. It is referred to as an eclipse, although… …   Wikipedia

  • Crucifixion darkness and eclipse — A solar eclipse from August 2008. It takes about an hour for the moon to cover the sun, with total coverage lasting a few minutes.[1] …   Wikipedia

  • Bernhard Walther — (1430 in Memmingen ndash; June 19 1504 in Nuremberg) was a German merchant, humanist and astronomer based in Nuremberg, Germany.The merchant was a man of large means, which he devoted to scientific pursuits. When Regiomontanus settled in… …   Wikipedia

  • navigation — navigational, adj. /nav i gay sheuhn/, n. 1. the act or process of navigating. 2. the art or science of plotting, ascertaining, or directing the course of a ship, aircraft, or guided missile. [1520 30; < L navigation (s. of navigatio) a voyage.… …   Universalium

  • Mathematics and Physical Sciences — ▪ 2003 Introduction Mathematics       Mathematics in 2002 was marked by two discoveries in number theory. The first may have practical implications; the second satisfied a 150 year old curiosity.       Computer scientist Manindra Agrawal of the… …   Universalium


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