92 ANNUAL REPORT SMITHSONIAN INSTITUTION, 1961 



Special Report No. 52, Nov. 21, 1960. 

 A theory of satellite motion about an oblate planet: A second-order solution 

 of Vinti's dynamical problem, by I. G. Izsak. 

 Special Report No. 53, Dec. 5, 1960. 

 The orbits and the accelerations of Satellites 1959 al and 1959 a2, by R. C. 

 Nigam. 

 Special Report No. 54 (C-18), Dec. 19, 1960. 

 Catalogue of satellite observations : Satellites 1958 Alpha, 1958 /Si, 1959 p2, 



1958 52, 1958 Epsilon, for June 1-Aug. 31, 1960, by D. V. Mechau. 

 Special Report No. 55 ( C-19 ) , Dec. 19, 1960. 



Catalogue of satellite observations: Satellites 1959 al, 1959 a2, 1959 Eta, 



1959 tl, for June 1-Aug. 31, 1960, by D. V. Mechau. 

 Special Report No. 56, Jan. 30, 1961. 



A method of analysis for lens and mirror systems, by R. J. Davis, S. E. Strom, 



and K. M. Strom. 

 A determination of the ellipticity of the earth's equator from the motion of 



two satellites, by I. G. Izsak. 

 Effects of solar radiation pressure on the motion of an artificial satellite, 

 by Y. Kozai. 

 Special Report No. 57 (C-20), Mar. 3, 1961. 



Catalogue of satellite observations : Satellites 1960 /3l (carrier rocket Tiros I), 

 for Apr. 1-June 1, 1960; 1960 /32 (Tiros I), for Apr. 2-Aug. 31, 1960; 1960 

 7I (carrier rocket. Transit I B), for Apr. 13- June 3, 1960; 1960 72 (Transit 

 IB) for Apr. 14- July 25, 1960, by D. V. Mechau, 

 Special Report No. 58 (C-21) , Mar. 3, 1961. 

 Catalogue of satellite observations: Satellites 1960 tl (Echo I), and 1960 i2 

 (carrier rocket, Echo I), for Aug. 12-Aug. 31, 1960, by D. V. Mechau. 

 Special Report No. 59, Mar. 3, 1961. 



The positions of the Baker-Nunn camera stations, by G. Veis. 

 Special Report No. 60, Mar. 10, 1961. 

 The effect of radiation pressure on the secular acceleration of satellites, by 

 S. P. Wyatt. 

 Special Report No. 61, Mar. 20, 1961. 

 Experimental and theoretical results on the orbit of Echo I, by P. B. 

 Zadunaisky, I. J. Shapiro, and H. M. Jones. 

 Special Report No. 62, May 26, 1961. 

 The atmospheric drag of artificial satellites during the October 1960 and 

 November 1960 events, by L. G. Jacchia. 

 Special Report No. 63, May 29, 1961, 

 Effect of the diurnal atmospheric bulge on satellite accelerations, by S. P. 

 Wyatt. 



OTHER ACTIVITIES 



Members of the staff presented papers at meetings of the American 

 Astronomical Society, the American Physical Society, the American 

 Geophysical Union, the National Telemetering Conference, the Amer- 

 ican Meteorological Society, the American Astronautical Society, 

 the American Philosophical Society, the Optical Society of America, 

 the International Association of Geodesy, the Institute of Aero- 

 nautical Sciences, the National Aeronautics and Space Administration. 



Dr. Fireman presented a paper at the International Atomic Energy 

 Commission in Vienna and at a meeting of the Meteoritical Society 

 in Los Angeles. The Director, Dr. Veis, Mr. Izsak, and Dr. Jacchia 



