The IAU Resolutions on Astronomical Reference Systems, Time Scales, and Earth Rotation Models (Draft 4)

Abstract : The chapters in this circular reflect the six main subject areas described above. Each of the chapters contains a list of the relevant IAU resolutions, a summary of the recommendations, an explanatory narrative, and, in most chapters, a collection of formulas used in implementing the recommendations. The references for all chapters are collected in one bibliography at the end of the circular.