Institution: | (1) RAND, Santa Monica, California, U.S.A.;(2) Institute for Theoretical Astronomy, St. Petersburg, Russia;(3) Observatoire de Paris, Meudon, France;(4) Astronomical Institute, Prague, Czechoslovakia;(5) STX, Lanham, Maryland, U.S.A.;(6) Jet Propulsion Laboratory, Pasadena, California, U.S.A.;(7) U.S. Naval Observatory, Washington, D.C., U.S.A.;(8) Royal Greenwich Observatory, Cambridge, U.K.;(9) Central Research Institute of Geodesy, Air Survey, and Mapping (TsNIIGAik), Moscow, Russia |