190 



U.S.A. 



ORBITING GEOPEIYSICAL OBSERVATORIES (OGO) 

 NASA 



"Big Science" Descriptor : Space: physics and astronomy 



Description of Facility/ Instrument : These observatories conducted experi- 

 ments within the Earth's atmosphere and magnetosphere, and in 

 cislunar space (between the Earth and the Moon). The first two 

 observatories, although launched, failed mechanically in orbit 

 (OGO-1 and OGO-2). Subsequent missions (OGO-3, 4, 5, and 6) had 

 varied success In obtaining data. All operations have been ter- 

 minated since OGO-6, (7/14/72). 



Date of Construction : 1964-1969 (launches) 



Construction Cost ; 1984 $$ : $228.4 million 



Present International Cooperation 



Natlonallty(s) of Ownership: U.S. 



Natlonallty(s) of Operational Funding ; U.S. 

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

 Nationality(s) of Researchers: U.S. 



Other Information: 



OGO - 1(A) 

 OGO - 11(C) 

 OGO - III(B) 

 OGO - IV(D) 

 OGO - V(E) 

 OGO - VI(F) 



Launched 



September 5, 1964 

 October 14, 1965 

 June 7, 1966 

 July 28, 1967 

 March 4, 1968 

 June 5, 1969 



