International Celestial Reference System definition of International Celestial Reference System in the Free Online Encyclopedia.

International Celestial Reference System [‚in·tər¦nash·ən·əl si¦les·chəl ′ref·rəns ‚sis·təm]

(astronomy)

A system that is realized by the International Celestial Reference Frame, made up from the positions of extragalactic radio sources, and that encompasses the standard reference frames, the transformations between them, and all the constants and motions involved, as well as the time scales specified for the reference frames and origins involved. It was adopted by the International Astronomical Union in 1994 as the fundamental reference system.

Mentioned in	?		Encyclopedia browser	?		Full browser	?
No references found			International Astronautical Federation IAF International Astronomical Union IAU International Atomic Energy Agency International Atomic Energy Agency IAEA international atomic time International Bank for Economic Cooperation International Bank for Reconstruction and Development International Bank for Reconstruction and Development IBRD International Bar-B-Q Festival International Biological Congresses International Biological Program International Brigades international broadcasting International Bruckner Festival International Business Machines international cable code international call sign international callback International Camel Races International Canals international candle International Carillon Festival International Cartel International Cartographic Association ICA International Celestial Reference Frame International Celestial Reference System International Center for Settlement of Investment Disputes International Cervantes Festival International Chess Federation International Children's Book Day International Civil Aviation Organization International Civil Procedure International Clown Festival International Code Council International Code of Signals international code signal International Committee of Children's and Youth Organizations International Committee of Slavists ICS International Computers Limited plc International Confederation of Free Trade Unions ICFTU International Conference of Building Officials International Congress for Modern Architecture international control frequency bands international control station International Conventions International Cooperative Alliance ICA International Cooperative Day International Copyright Conventions International Core War Society International Council of Scientific Unions International Council of Trade and Industrial Unions			International Cat Agility Tournament International Cataloguing and Bibliographic Control International Catalyst Technology, Inc. International Catamaran Challenge Trophy International Catering Limited International Catholic Centre of Geneva International Catholic Charismatic Renewal Office International Catholic Charismatic Renewal Services International Catholic Child Bureau International Catholic Conference of Guiding International Catholic Conference of Scouting International Catholic Deaf Association International Catholic Girls' Society International Catholic Migration Commission International Catholic Movement for Intellectual and Cultural Affairs International Catholic Organizations International Catholic Organizations Information Center International Catholic Rural Association International Catholic Stewardship Council International Catholic Union of the Press International Caucasus Foundation on MInority Issues International CBX Owners Association International Cd-i Association International Celestial Reference Frame International Celestial Reference Frame International Celestial Reference System International Cell Assisted Surgery Congress International Cell Research Organization International Cemetery and Funeral Association International Cemetery, Cremation and Funeral Association International Census of Marine Microbes International Center for 8mm Film International Center for Accelerated Language Learning International Center for Accessible Radio Technology International Center for Advanced Internet Research International Center for Advancement of Manufacturing Technology International Center for Advancing Neonatal Health International Center for Aggregates Research International Center for Aggression Replacement Training International Center for Agribusiness Research and Education International Center for Agricultural Research in the Dry Areas International Center for Air Transport International Center for Alcohol Policies International Center for Applied Business Intelligence International Center for Applied Studies in Information Technology International Center for Appropriate & Sustainable Technology International Center for Aquaculture and Aquatic Environments International Center for Aquatic Research International Center for Arid and Semi-Arid Land Studies International Center for Artificial Organs and Transplantation