The Second U.S. Naval Observatory CCD Astrograph Catalog ( UCAC2 ) Table of Contents 1) Introduction 2) Summary of the Project a) Observations and Instrumentation b) Reductions of UCAC Observations c) Computation of Proper Motions 3) Properties of the Catalog and Important Notes For the User a) Sky Coverage b) Completeness c) Positions, Proper Motions and Error Calculations d) UCAC2 Magnitudes e) 2MASS Photometry f) Non-stellar ... All stars in the UCAC2 have proper motions. ...

... 1987. .3, , 5. . ... 90 Vd lgE N: 1 ­ N=1010, 2 ­ N=1011, 3 ­ N=1012 , 4 ­ N=1013 -3. ... L1 , , , V, / , V0, / , N 1010, -3 4 000 L2 13 000 L3 25 000 L5 45 000 L6 43 000 L7 37 000 L8 10 000 37 000 29 000 20 000 2 000 -13 000 -20 000 -41 000 7,3 14,6 25,1 -8,5 -29,7 -35,7 -77,7 36,5 67,3 124,8 76,4 33,8 39,2 93,9 7,41 6,92 4,79 7,59 3,31 3,02 6,31 Vd lgE : 1 ­ N=1010; 2 ­ N=1011; 3 ­ N=1012; 4 ­ N=1013 -3 "" . ... 7,6], , 7000 ­ 20 000 1 в 1011 ­ 6 в 1012 -3. 10-5 ­ 10-3 /, 20 170 /. 5 в 1012 -3 . ...

... Space activity at the beginning of XXI-st Century view from inside G.M.Chernyavskiy STC for Earth Space monitoring of FSUE , Russia 1. The systemic approach in astronautics Everyone who has linked his life with astronautics and those who are interested in the future of the inhabitancy medium and its expansion up to cosmic scales, are troubled about the current state and development of space activity in the World and in the Native Land of the first artificial Earth satellite (AES). ...

The Archeops experiment aimed at measuring the cosmic background emitted just after the Big Bang. The study of this radiation is essential to obtain precise information on the evolution of the Universe: density, Hubble constant, age of the Universe.. To achieve this goal, measurements have been done with devices cooled down at 100mK temperature placed at the focus of a warm telescope. ... 28960 visitors . ...