200 



EUROPE 



HIPPARCOS 



European Space Agency (E.S.A.) 



"Big Science" Descriptor : Space: physics and astronomy 



Description of Facility/Instrument : This satellite will study and mea- 

 sure the five main astrometrlc positions of the stars, and their 

 distance, position, and proper motions. The survey of HIPPARCOS 

 will Include 10,000 selected stars. 



Date of Construction : 1987-1988 (projected launch) 



Construction Cost : 1984 $$ : 



Present International Cooperation 



Natlonallty(s) of Ownership : E.S.A. 

 Natlonallty(s) of Operational Funding : E.S.A. 

 Natlonallty(s) of Management Staff : E.S.A. 

 Natlonallty(s) of Researchers: E.S.A. 



UNITED KINGDOM 



ARIEL 1-6 



Rutherford Appleton Laboratory Satellite Control Center 



"Big Science" Descriptor : Space: physics and astronomy 



Description of Facility/Instrument : These six satellite launches 



studied Ionosphere, atmospheric ozone, radio astronomy, atmos- 

 pheric physics, meteorology, micrometeorltes , ionospheric plasmas, 

 magnetic fields, galatlc x-rays, and high-energy astrophysics. 



Date of Construction : 1962-1979 (launches) 



Construction Cost : 1984 $$ : 



Present International Cooperation 



Natlonality(s) of Ownership : U.K. 

 Natlonallty(s) of Operational Funding : U.K. 

 Natlonallty(s) of Management Staff : U.K. 

 Nationallty(s) of Researchers: U.K. 



Other Information: 



Launched 



ARIEL 1 (UK 1) 

 ARIEL 2 (UK 2) 

 ARIEL 3 (UK 3) 

 ARIEL 4 (UK 4) 



ARIEL 5 (UK 5); 

 ARIEL 6 (UK 6): 



April 26, 1962, ionospheric and solar studies 

 May 27, 1962, atmospheric ozone 

 May 5, 1967, atmospheric physics 

 December 9, 1971, ionospheric plasmas, magne- 

 tic fields 

 October 15, 1974, galactic x-rays 

 June 2, 1979, science satellite 



