Matches in DBpedia 2016-04 for { <http://dbpedia.org/resource/Spherical_astronomy> ?p ?o }
- Spherical_astronomy abstract "Spherical astronomy or positional astronomy is the branch of astronomy that is used to determine the location of objects on the celestial sphere, as seen at a particular date, time, and location on Earth. It relies on the mathematical methods of spherical geometry and the measurements of astrometry.This is the oldest branch of astronomy and dates back to antiquity. Observations of celestial objects have been, and continue to be, important for religious and astrological purposes, as well as for timekeeping and navigation. The science of actually measuring positions of celestial objects in the sky is known as astrometry.The primary elements of spherical astronomy are coordinate systems and time. The coordinates of objects on the sky are listed using the equatorial coordinate system, which is based on the projection of Earth's equator onto the celestial sphere. The position of an object in this system is given in terms of right ascension (α) and declination (δ). The latitude and local time can then be used to derive the position of the object in the horizontal coordinate system, consisting of the altitude and azimuth.The coordinates of celestial objects such as stars and galaxies are tabulated in a star catalog, which gives the position for a particular year. However, the combined effects of precession and nutation will cause the coordinates to change slightly over time. The effects of these changes in the movement of Earth are compensated by the periodic publication of revised catalogs.To determine the position of the Sun and planets, an astronomical ephemeris (a table of values that gives the positions of astronomical objects in the sky at a given time) is used, which can then be converted into suitable real-world coordinates.The unaided human eye can detect about 6000 stars, of which about half are below the horizon at any one time. On modern star charts, the celestial sphere is divided into 88 constellations. Every star lies within a constellation. Constellations are useful for navigation. Polaris lies close to due north to an observer in the northern hemisphere. This star is always at a position nearly over the North Pole.".
- Spherical_astronomy wikiPageExternalLink index.html.
- Spherical_astronomy wikiPageExternalLink positional.htm.
- Spherical_astronomy wikiPageExternalLink jnovas.
- Spherical_astronomy wikiPageExternalLink tutorial.html.
- Spherical_astronomy wikiPageID "2039039".
- Spherical_astronomy wikiPageLength "5257".
- Spherical_astronomy wikiPageOutDegree "71".
- Spherical_astronomy wikiPageRevisionID "701887557".
- Spherical_astronomy wikiPageWikiLink 1977_in_literature.
- Spherical_astronomy wikiPageWikiLink 1985_in_literature.
- Spherical_astronomy wikiPageWikiLink Altitude.
- Spherical_astronomy wikiPageWikiLink Ancient_history.
- Spherical_astronomy wikiPageWikiLink Angle.
- Spherical_astronomy wikiPageWikiLink Arkaim.
- Spherical_astronomy wikiPageWikiLink Astrological_aspect.
- Spherical_astronomy wikiPageWikiLink Astrology.
- Spherical_astronomy wikiPageWikiLink Astrometry.
- Spherical_astronomy wikiPageWikiLink Astronomical_object.
- Spherical_astronomy wikiPageWikiLink Astronomy.
- Spherical_astronomy wikiPageWikiLink Azimuth.
- Spherical_astronomy wikiPageWikiLink Category:Astrological_aspects.
- Spherical_astronomy wikiPageWikiLink Category:Astrometry.
- Spherical_astronomy wikiPageWikiLink Category:Spherical_astronomy.
- Spherical_astronomy wikiPageWikiLink Celestial_coordinate_system.
- Spherical_astronomy wikiPageWikiLink Celestial_mechanics.
- Spherical_astronomy wikiPageWikiLink Celestial_navigation.
- Spherical_astronomy wikiPageWikiLink Celestial_sphere.
- Spherical_astronomy wikiPageWikiLink Chichen_Itza.
- Spherical_astronomy wikiPageWikiLink Conjunction_(astronomy).
- Spherical_astronomy wikiPageWikiLink Constellation.
- Spherical_astronomy wikiPageWikiLink Declination.
- Spherical_astronomy wikiPageWikiLink Diurnal_motion.
- Spherical_astronomy wikiPageWikiLink Earth.
- Spherical_astronomy wikiPageWikiLink Eclipse.
- Spherical_astronomy wikiPageWikiLink Ecliptic.
- Spherical_astronomy wikiPageWikiLink Edmond_Halley.
- Spherical_astronomy wikiPageWikiLink Elongation_(astronomy).
- Spherical_astronomy wikiPageWikiLink Ephemeris.
- Spherical_astronomy wikiPageWikiLink Epoch_(astronomy).
- Spherical_astronomy wikiPageWikiLink Equator.
- Spherical_astronomy wikiPageWikiLink Equatorial_coordinate_system.
- Spherical_astronomy wikiPageWikiLink Equinox.
- Spherical_astronomy wikiPageWikiLink Hindu_astrology.
- Spherical_astronomy wikiPageWikiLink History_of_astronomy.
- Spherical_astronomy wikiPageWikiLink History_of_timekeeping_devices.
- Spherical_astronomy wikiPageWikiLink Horizontal_coordinate_system.
- Spherical_astronomy wikiPageWikiLink Inferior_and_superior_planets.
- Spherical_astronomy wikiPageWikiLink Keplers_laws_of_planetary_motion.
- Spherical_astronomy wikiPageWikiLink Medicine_wheel.
- Spherical_astronomy wikiPageWikiLink Naval_Observatory_Vector_Astrometry_Subroutines.
- Spherical_astronomy wikiPageWikiLink Navigation.
- Spherical_astronomy wikiPageWikiLink North_Pole.
- Spherical_astronomy wikiPageWikiLink Nutation.
- Spherical_astronomy wikiPageWikiLink Occultation.
- Spherical_astronomy wikiPageWikiLink Orbit.
- Spherical_astronomy wikiPageWikiLink Parallax.
- Spherical_astronomy wikiPageWikiLink Plane_(geometry).
- Spherical_astronomy wikiPageWikiLink Point_(geometry).
- Spherical_astronomy wikiPageWikiLink Polaris.
- Spherical_astronomy wikiPageWikiLink Precession.
- Spherical_astronomy wikiPageWikiLink Pyramid.
- Spherical_astronomy wikiPageWikiLink Retrograde_and_prograde_motion.
- Spherical_astronomy wikiPageWikiLink Right_ascension.
- Spherical_astronomy wikiPageWikiLink Sidereal_time.
- Spherical_astronomy wikiPageWikiLink Solar_System.
- Spherical_astronomy wikiPageWikiLink Solstice.
- Spherical_astronomy wikiPageWikiLink Spherical_geometry.
- Spherical_astronomy wikiPageWikiLink Star.
- Spherical_astronomy wikiPageWikiLink Star_catalogue.
- Spherical_astronomy wikiPageWikiLink Stonehenge.
- Spherical_astronomy wikiPageWikiLink Sun.
- Spherical_astronomy wikiPageWikiLink Temple_of_the_Sun.
- Spherical_astronomy wikiPageWikiLink Transit_(astronomy).
- Spherical_astronomy wikiPageWikiLinkText "Spherical astronomy".
- Spherical_astronomy wikiPageWikiLinkText "astronomie de position".
- Spherical_astronomy wikiPageWikiLinkText "positional astronomy".
- Spherical_astronomy wikiPageWikiLinkText "spherical astronomy".
- Spherical_astronomy wikiPageUsesTemplate Template:Main.
- Spherical_astronomy subject Category:Astrological_aspects.
- Spherical_astronomy subject Category:Astrometry.
- Spherical_astronomy subject Category:Spherical_astronomy.
- Spherical_astronomy hypernym Branch.
- Spherical_astronomy type Organisation.
- Spherical_astronomy type Factor.
- Spherical_astronomy type Redirect.
- Spherical_astronomy type Sub-discipline.
- Spherical_astronomy comment "Spherical astronomy or positional astronomy is the branch of astronomy that is used to determine the location of objects on the celestial sphere, as seen at a particular date, time, and location on Earth. It relies on the mathematical methods of spherical geometry and the measurements of astrometry.This is the oldest branch of astronomy and dates back to antiquity.".
- Spherical_astronomy label "Spherical astronomy".
- Spherical_astronomy sameAs Q1129343.
- Spherical_astronomy sameAs علم_الفلك_الكروي.
- Spherical_astronomy sameAs Сферычная_астраномія.
- Spherical_astronomy sameAs Sférická_astronomie.
- Spherical_astronomy sameAs Sphärische_Astronomie.
- Spherical_astronomy sameAs Σφαιρική_αστρονομία.
- Spherical_astronomy sameAs Astronomía_de_posición.
- Spherical_astronomy sameAs Sfääriline_astronoomia.
- Spherical_astronomy sameAs نجوم_کروی.
- Spherical_astronomy sameAs Pallotähtitiede.
- Spherical_astronomy sameAs Astronomie_de_position.