Proceedings of IAU Colloquium No. 9, the IAU System of Astronomical Constants, Heidelberg, 12–14 August 1970 B. EmersonG. A. Wilkins Report 01 October 1971 Pages: 128 - 149
On the correction to precession from proper motions referred to galaxies S. VasilevskisA. R. Klemola OriginalPaper 01 October 1971 Pages: 163 - 170
The excess secular change in the obliquity of the ecliptic and its relation to the internal motion of the Earth Shinko AokiChuichi Kakuta OriginalPaper 01 October 1971 Pages: 171 - 181
Notes on equinox motion and corrections to precession T. C. Van Flandern OriginalPaper 01 October 1971 Pages: 182 - 185
Observed and theoretical values of the nutations R. O. Vicente OriginalPaper 01 October 1971 Pages: 186 - 189
A determination of the masses of the five outer planets R. L. DuncombeW. J. KlepczynskiP. K. Seidelmann OriginalPaper 01 October 1971 Pages: 224 - 232
Simultaneous solution for the masses of the principal planets from analysis of optical, radar, and radio tracking data J. H. LieskeW. G. MelbourneW. S. Sinclair OriginalPaper 01 October 1971 Pages: 233 - 245
The planetary masses and the orbits of the first four minor planets J. Schubart OriginalPaper 01 October 1971 Pages: 246 - 249
Correction to the mass of Jupiter derived from the motion of (153) Hilda, (279) Thule, and (334) Chicago H. Scholl OriginalPaper 01 October 1971 Pages: 250 - 252
The masses of the principal planets W. J. KlepczynskiP. K. SeidelmannR. L. Duncombe OriginalPaper 01 October 1971 Pages: 253 - 272
Corrections to the lunisolar precession and the motion of the equinox from proper motions of Cepheids A. M. Sinzi OriginalPaper 01 October 1971 Pages: 273 - 276
Sur l'effet d'une correction de la constante de la précession A. Bec OriginalPaper 01 October 1971 Pages: 277 - 278
The 1964 IAU system and the Geodetic Reference System 1967 J. Kovalevsky OriginalPaper 01 October 1971 Pages: 279 - 280