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fundamental astrometry

См. также в других словарях:

  • Astrometry — is the branch of astronomy that relates to precise measurements and explanations of the positions and movements of stars and other celestial bodies. Although once thought of as an esoteric field with little useful application for the… …   Wikipedia

  • Naval Observatory Vector Astrometry Subroutines — Not to be confused with Novas Software. NOVAS Developer(s) United States Naval Observatory Stable release C3.0 (C version); F3.0 (Fortran version) / December 31, 2009 (C); December 23, 2009 (FORTRAN) …   Wikipedia

  • Astronomy — (from the Greek words astron (ἄστρον), star , and nomos (νόμος), law ) is the scientific study of celestial objects (such as stars, planets, comets, and galaxies) and phenomena that originate outside the Earth s atmosphere (such as the cosmic… …   Wikipedia

  • Theoretical astronomy — Nucleosynthesis Stellar nucleosynthesis Big Bang nucleosynthesis Supernova nucleosynthesis Cosmic ray spallation …   Wikipedia

  • Astronomy — • Divided into two main branches, astrometry and astrophysics; the former concerned with determining the places of the investigation of the heavenly bodies, the latter, with the investigation of their chemical and physical nature Catholic… …   Catholic encyclopedia

  • Star catalogue — An illustration of the Perseus constellation (after Perseus from Greek mythology) from the star catalogue published by the German astronomer Johannes Hevelius in 1690 A star catalogue, or star catalog, is an astronomical catalogue that lists… …   Wikipedia

  • Cosmic distance ladder — * Light green boxes: Technique applicable to star forming galaxies. * Light blue boxes: Technique applicable to Population II galaxies. * Light Purple boxes: Geometric distance technique. * Light Red box: The planetary nebula luminosity function… …   Wikipedia

  • Gart Westerhout — Summary Biography Gart Westerhout (1927 ) is a Dutch astronomer. Well before completing his university studies at Leiden, he had already become well established internationally as a radio astronomer in The Netherlands, specializing in studies of… …   Wikipedia

  • Fundamentalkatalog 4 — Der FK4 (Fourth Fundamental Catalogue) ist der wichtigste Fundamentalkatalog der letzten 40 Jahre und repräsentierte über Jahrzehnte das himmlische (zälestische) Koordinatensystem. Er diente der Astronomie und der Geodäsie ab 1963 als die… …   Deutsch Wikipedia

  • Fundamentalkatalog 5 — Der FK5 (Fifth Fundamental Catalogue) ist der wichtigste Fundamentalkatalog der letzten 15 Jahre und wird bis etwa 2010 das himmlische (zälestische) Koordinatensystem definieren. Er diente der Astronomie und der Geodäsie ab 1988 als die genaueste …   Deutsch Wikipedia

  • Star position — The position of stars on the sky are defined by a couple of angles, similar to the geographic latitude and longitude. These two angles which refer to the celestial equator are called Declination (abbrev. δ or Dec ) and Right ascension ( α or RA ) …   Wikipedia

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